[Crustacea • 2017] Pylopaguropsis mollymullerae • A New Species of Hermit Crab of the Genus Pylopaguropsis Alcock, 1905 (Anomura, Paguridae) from the Caribbean: “Den Commensal” or “Cleaner”? ---ScRaBBlE

Pylopaguropsis mollymullerae  Lemaitre, 2017

 In situ photographs of Pylopaguropsis mollymullerae sp. n. and its habitat at Bonaire diving site “Something Special”. A holotype male 2.4 mm, Bonaire (USNM 1291987)  C three individuals of P. mollymullerae sp. n. (foreground, not collected) in den with “broad banded moray” Channomuraena vittata

DOI:  10.3897/zookeys.646.11132

Abstract

A new secretive, yet brightly colored hermit crab species of the family Paguridae, Pylopaguropsis mollymullerae sp. n., is fully described based on specimens from the reefs of Bonaire, Lesser Antilles, southern Caribbean Sea. Populations of this new species were discovered and photographed in the Bonaire National Marine Park under a large coral ledge, at a depth of 13.7 m, living in crevices known by scuba divers to serve as den to a pair of “flaming reef lobsters” Enoplometopus antillensis, or a “broad banded moray” Channomuraena vittata. This new species is only the second species of Pylopaguropsis Alcock, 1905 known from the western Atlantic, the 20th named worldwide, and belongs in the teevana group of species of the genus. It is remarkably similar, and herein considered geminate, to the tropical eastern Pacific congener, P. teevana (Boone, 1932), the two being characterized and uniquely different from all other species of the genus, by the striking and deeply excavated, scoop-like ventral surface of the chela of the right cheliped. Minor differences separate this new species from P. teevana in the relative length of the antennal acicles (exceeding the corneas versus not exceeding the corneas in P. teevana); dorsal armature of the right chela (smooth or with scattered minute tubercles versus with numerous small tubercles in P. teevana); surface shape of the lateral face of the dactyl of right pereopod 3 (evenly convex versus flattened in P. teevana); and coloration (red bright red stripes versus brown stripes in P. teevana). The highly visible color pattern of bright red stripes on white background typical of decapods known to have cleaning symbioses with fish, dense setation on the flagella of the antennae, and preference for a crevicular habitat, combined with brief in situ nocturnal observations, suggests the possibility that P. mollymullerae sp. n. engages in “cleaner” activities or functions as a “den commensal” with moray eels. The morphology and possible meaning of the observed behavior is discussed. A tabular summary of the distribution, habitat, and published information on all species of Pylopaguropsis is presented. Supplemental photographs and a video of live P. mollymullerae sp. n. are included.

Keywords: Bonaire, Caribbean, “cleaner”, “den commensal”, hermit crab, new species, Paguridae, Pylopaguropsis

Systematic account 

Family Paguridae Latreille, 1802

Pylopaguropsis mollymullerae sp. n.

Figure 6. In situ photographs of Pylopaguropsis mollymullerae sp. n. and its habitat at Bonaire diving site “Something Special”. A holotype male 2.4 mm, Bonaire (USNM 1291987) B paratype male 1.8 mm, Bonaire (USNM 1291989) C three individuals of P. mollymullerae sp. n. (foreground, not collected) in den with “broad banded moray” Channomuraena vittata D coral ledge habitat, with arrow indicating entrance to crevice where five specimens of P. mollymullerae sp. n. were collected E individual of P. mollymullerae sp. n. (expanded and enhanced in oval inset, not collected) on body surface of “broad banded moray” C. vittata, with frontal portion of brachyuran Achelous sebae visible on lower right.  

DOI:  10.3897/zookeys.646.11132

    

Figure 6. In situ photographs of Pylopaguropsis mollymullerae sp. n. and its habitat at Bonaire diving site “Something Special”. A holotype male 2.4 mm, Bonaire (USNM 1291987) B paratype male 1.8 mm, Bonaire (USNM 1291989) C three individuals of P. mollymullerae sp. n. (foreground, not collected) in den with “broad banded moray” Channomuraena vittata D coral ledge habitat, with arrow indicating entrance to crevice where five specimens of P. mollymullerae sp. n. were collected E individual of P. mollymullerae sp. n. (expanded and enhanced in oval inset, not collected) on body surface of “broad banded moray” C. vittata, with frontal portion of brachyuran Achelous sebae visible on lower right.  

Distribution: So far known only from the island of Bonaire, Lesser Antilles, southern Caribbean Sea; depth: 11.6–13.7 m.

Etymology: The name of this new species is given to acknowledge the efforts of the collector, photographer and environmentalist, Ms Ellen Muller, who when informed of the intended honor, preferred that the name of her granddaughter, Ms Molly Muller, be used, in hopes to inspire her to continue the tradition of protecting the amazing and fragile diversity of marine life in Bonaire.

Common name: “Candy Striped Hermit Crab”, in reference to the bright white and red striped color pattern that is similar to that of traditional candy cane.

 Rafael Lemaitre. 2017. Discovery of A New Species of Hermit Crab of the Genus Pylopaguropsis Alcock, 1905 from the Caribbean: “Den Commensal” or “Cleaner”? (Crustacea, Anomura, Paguridae). ZooKeys. 646: 139-158. DOI:  10.3897/zookeys.646.11132

        

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

من هنا

او

من هنا

شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا
شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.

[Cnidaria • 2017] Multigene Phylogeny of the Scyphozoan Jellyfish Family Pelagiidae reveals that the Common U.S. Atlantic Sea Nettle Comprises Two Distinct Species (Chrysaora quinquecirrha & C. chesapeakei) ---ScRaBBlE

 Figure 3: Various morphs of Chrysaora quinquecirrha s.l. 
(A) Offshore South Carolina (OSC); (B) Sample taken from offshore Georgia; (C) Engelhard, NC (PAM); (D) White Chesapeake Bay color morph (Broome’s Island, MD—Patuxent River); (E) Red-striped Chesapeake Bay color morph (Solomons, MD—Patuxent River).

 Bayha​, Collins & Gaffney, 2017.    DOI: 10.7717/peerj.3863

Abstract

Background

Species of the scyphozoan family Pelagiidae (e.g., Pelagia noctiluca, Chrysaora quinquecirrha) are well-known for impacting fisheries, aquaculture, and tourism, especially for the painful sting they can inflict on swimmers. However, historical taxonomic uncertainty at the genus (e.g., new genus Mawia) and species levels hinders progress in studying their biology and evolutionary adaptations that make them nuisance species, as well as ability to understand and/or mitigate their ecological and economic impacts.

Methods

We collected nuclear (28S rDNA) and mitochondrial (cytochrome c oxidase I and 16S rDNA) sequence data from individuals of all four pelagiid genera, including 11 of 13 currently recognized species of Chrysaora. To examine species boundaries in the U.S. Atlantic sea nettle Chrysaora quinquecirrha, specimens were included from its entire range along the U.S. Atlantic and Gulf of Mexico coasts, with representatives also examined morphologically (macromorphology and cnidome).

Results

Phylogenetic analyses show that the genus Chrysaora is paraphyletic with respect to other pelagiid genera. In combined analyses, Mawia, sampled from the coast of Senegal, is most closely related to Sanderia malayensis, and Pelagia forms a close relationship to a clade of Pacific Chrysaora species (Chrysaora achlyos, Chrysaora colorata, Chrysaora fuscescens, and Chrysaora melanaster). Chrysaora quinquecirrha is polyphyletic, with one clade from the U.S. coastal Atlantic and another in U.S. Atlantic estuaries and Gulf of Mexico. These genetic differences are reflected in morphology, e.g., tentacle and lappet number, oral arm length, and nematocyst dimensions. Caribbean sea nettles (Jamaica and Panama) are genetically similar to the U.S. Atlantic estuaries and Gulf of Mexico clade of Chrysaora quinquecirrha.

Discussion

Our phylogenetic hypothesis for Pelagiidae contradicts current generic definitions, revealing major disagreements between DNA-based and morphology-based phylogenies. A paraphyletic Chrysaora raises systematic questions at the genus level for Pelagiidae; accepting the validity of the recently erected genus Mawia, as well as past genera, will require the creation of additional pelagiid genera. Historical review of the species-delineating genetic and morphological differences indicates that Chrysaora quinquecirrha Desor 1848 applies to the U.S. Coastal Atlantic Chrysaora species (U.S. Atlantic sea nettle), while the name C. chesapeakei Papenfuss 1936 applies to the U.S. Atlantic estuarine and Gulf of Mexico Chrysaora species (Atlantic bay nettle). We provide a detailed redescription, with designation of a neotype for Chrysaora chesapeakei, and clarify the description of Chrysaora quinquecirrha. Since Caribbean Chrysaora are genetically similar to Chrysaora chesapeakei, we provisionally term them Chrysaora c.f. chesapeakei. The presence of Mawia benovici off the coast of Western Africa provides a potential source region for jellyfish introduced into the Adriatic Sea in 2013.

Figure 3: Various morphs of Chrysaora quinquecirrha s.l.  (A) Offshore South Carolina (OSC); (B) Sample taken from offshore Georgia; (C) Engelhard, NC (PAM); (D) White Chesapeake Bay color morph (Broome’s Island, MD—Patuxent River); (E) Red-striped Chesapeake Bay color morph (Solomons, MD—Patuxent River).

 Note that medusae from (A) to (B) have five tentacles per octant, while (C)–(E) have three tentacles per octant. Medusae in (A, C) were included in this study’s phylogenetic analyses. (A: OSC1; C: PAM1). (A, B) represent individuals finally designated as Chrysaora quinquecirrha; (C–E) represent individuals finally designated as Chrysaora chesapeakei. Photo Credits: (A) Shannon Howard; (B) Greg McFall-NOAA; (E) Robert Condon.

Systematics

Chrysaora quinquecirrha Desor, 1848

Figs. 3A, 3B, 4–9; Figs. S1 and S2.

  

Diagnosis: Living medusae up to 40 cm (observed 59.0–176.0 mm) (Figs. 3A and 3B); tentacles typically 40 or more; 5.28 ± 0.45 (95% CI) tentacles/octant on average (Table 3; Fig. 8A); lappets rounded typically 48 or more; 6.26 ± 0.46 lappets/octant on average; rhopalar lappets slightly larger than tentacular lappets; can be differentiated from Chrysaora chesapeakei based on (1) smaller size of holotrichous Aisorhiza nematocysts: average: 20.25 [±0.38] × 11.27 [±0.37] μm (Table 3; Fig. 8C); (2) larger tentacle number (more than five per octant); and (3) typically shorter maximum oral arm length (average: 1.24 ± 0.27 time bell diameter).

Type locality: Nantucket Bay, Nantucket Island, Massachusetts, East Coast of USA.

Habitat: Medusae are found in open coastal waters on the U.S. Atlantic coast.

Distribution: Western North Atlantic, east coast of the USA south of Cape Cod in coastal Atlantic waters at least as far south as Georgia/Northern Florida.

Biological data: Although the name Chrysaora quinquecirrha applies to the U.S. coastal Atlantic species, almost no ecological studies have been done on the coastal species, apart from (Kraeuter & Setzler, 1975), which found the largest Chrysaora quinquecirrha individual was found in a coastal area about 90 km offshore in full seawater (salinity >30).

Notes: Since this species retains the scientific name Chrysaora quinquecirrha, we advocate it retaining the common name “U.S. Atlantic sea nettle”, since it is also a coastal and open ocean species.

Chrysaora chesapeakei Papenfuss, 1936

Figs. 3C–3E and 4–9; Figs. S1 and S2

Diagnosis: Living medusae up to 20 cm (observed 17.0–175.0 mm; average: 63.0 mm); tentacles typically number 24 or 3 per octant (average 3.07 ± 0.07); primary tentacle central and secondary tentacles lateral (2-1-2); rarely, additional tentacles arise lateral to secondary tentacles (3-2-1-2-3) and are typically undeveloped; marginal lappets rounded and typically 32 or 4 per octant (average 4.08 ± 0.06); rhopalar lappets are typically about the same size as tentacular lappets; can be differentiated from Chrysaora quinquecirrha based on (1) larger size of holotrichous A-isorhiza nematocysts: 26.21 [±0.50] × 19.74 [±0.55] μm; (2) smaller tentacle number (∼3 tentacles per octant); and (3) larger maximum oral arm length (average: 3.00 ± 0.39 times bell diameter).

Type locality: Gloucester Point (VA), Chesapeake Bay, east coast of USA.

Habitat: Medusae are found in estuarine waters on the U.S. Atlantic coast and estuarine and nearshore waters of the Gulf of Mexico.

Distribution: Western North Atlantic, east coast of the USA south of New England to the Gulf of Mexico, restricted to estuarine waters on the Atlantic coast, known to exist outside of estuaries in the Gulf of Mexico.

Keith M. Bayha​, Allen G. Collins and Patrick M. Gaffney. 2017. Multigene Phylogeny of the Scyphozoan Jellyfish Family Pelagiidae reveals that the Common U.S. Atlantic Sea Nettle Comprises Two Distinct Species (Chrysaora quinquecirrha and C. chesapeakei).  PeerJ. 5:e3863.   DOI: 10.7717/peerj.3863

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

من هنا

او

من هنا

شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا
شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.

[Ichthyology • 2017] Redescription of the Bump-head Sunfish Mola alexandrini (Ranzani 1839), senior synonym of Mola ramsayi (Giglioli 1883), with Designation of A Neotype for Mola mola (Linnaeus 1758) (Tetraodontiformes: Molidae) ---ScRaBBlE

Mola alexandrini (Ranzani 1839)

Sawai, Yamanoue, Nyegaard & Sakai, 2017.  

  DOI: 10.1007/s10228-017-0603-6  

Abstract

The genus Mola of ocean sunfishes (family Molidae) is currently composed of three species: Mola mola (Linnaeus 1758), Mola ramsayi (Giglioli 1883), and Mola tecta Nyegaard et al. 2017. For a comprehensive revision of the genus, both literature survey and morphological investigations of Molidae were conducted. We found Mola alexandrini (Ranzani 1839) to be synonymous with M. ramsayi and we herein redescribe M. alexandrini based on the rediscovered dried holotype and 21 other fresh and preserved specimens. Mola alexandrini can be distinguished from other species of Mola by the following combination of characters in adults: head profile with bump; chin with bump; body scales rectangular; clavus rounded, supported by 14–24 (mode 17) clavus fin rays and 8–15 (12) ossicles on the rear margin. A neotype of M. mola is designated for comparison with M. alexandrini, as these two species have long been confused.

Keywords: Morphology, Neotype, Ocean sunfish, Redescription, Synonymy 

Mola alexandrini  bump-head sunfish

photo: Hasama Underwater Park 

Mola alexandrini (Ranzani 1839)

(Japanese name: Ushi-manbo; New English name: Bump-head sunfish)  

Orthragoriscus alexandrini Ranzani 1839:...

Orthragoriscus ramsayi Giglioli 1883:...

Orthagoriscus mola: Williams 1893:...

Masturus lanceolatus (not of Liénard): Gudger 1937: ...

Mola mola (not of Linnaeus): ...

Mola ramsayi: Whitley 1931: ...

Mola ramsayi Atlantic group: Bass et al. 2005: ....

Mola mola group A: Yoshita et al. 2005: 171.

Mola sp. group A: Yoshita et al. 2009: ....

Mola sp. A: Sawai et al. 2009: ....

Distribution and ecological notes. Mola alexandrini is widely distributed in the world’s oceans except for the polar regions (Fig. 5a; ESM Table S1); collected from waters off Japan, Taiwan, Galápagos Islands, New Zealand, Australia, Turkey, Oman, and Spain (Yamanoue et al. 2004, 2010; Bass et al. 2005; Sagara et al. 2005; Yoshita et al. 2005, 2009; Sawai et al. 2009, 2011, 2017a; Yamanoue and Sawai 2012; Thys et al. 2013, Ahuir-Baraja et al. 2017; Nyegaard et al. 2017). Mola alexandrini presumably prefers warmer water temperatures than inhabited by Mola mola; in waters off the Sanriku coast of Japan, sea surface temperatures during the occurrence of M. alexandrini (16.8–25.6°C, average 19.9°C) were on average higher than during the occurrence of M. mola (11.5–25.6°C, average 17.7°C) (Sawai et al. 2011).

Etsuro Sawai, Yusuke Yamanoue, Marianne Nyegaard and Yoichi Sakai. 2017. Redescription of the Bump-head Sunfish Mola alexandrini (Ranzani 1839), senior synonym of Mola ramsayi (Giglioli 1883), with Designation of A Neotype for Mola mola (Linnaeus 1758) (Tetraodontiformes: Molidae). Ichthyological Research.  DOI: 10.1007/s10228-017-0603-6

World’s heaviest bony fish identified and correctly named

Researchers clear up confusion between taxonomy of multiple species of ocean sunfishes

springer.com/gb/about-springer/media/research-news/all-english-research-news/world-s-heaviest-bony-fish-identified-and-correctly-named/15270666

 eurekalert.org/pub_releases/2017-12/s-whb120517.php

Fisch der Superlative stellt eine neue Art dar  derstandard.at/2000069439190/Fisch-der-Superlative-stellt-eine-neue-Art-dar via @derStandardat

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

من هنا

او

من هنا

شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا
شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.

[Mollusca • 2018] Revision of Platydoris angustipes and Description of A New Species, Platydoris guarani, (Gastropoda: Nudibranchia) from southeastern Brazil Based on Comparative Morphology ---ScRaBBlE

Platydoris guarani

de Lima & Simone, 2018

  DOI: 10.3897/zse.94.14959 

Abstract

Platydoris angustipes (Mörch, 1863) is a common nudibranch in the Western Atlantic, ranging from Florida, USA, to Rio de Janeiro, Brazil. In this study, we examined the anatomy of P. angustipes along its distribution, including its type material. Our analysis shows consistent differences between the Caribbean and Brazilian populations, mainly in the reproductive system, radular teeth and odontophore musculature. This strongly suggests that the two populations actually belong to distinct species. The Brazilian population is described herein as a new species, Platydoris guarani sp. n.

Key Words: Discodorididae, Platydoris angustipes, Platydoris guarani, new species

 ....

Family Discodorididae Bergh, 1891

Genus Platydoris Bergh, 1877

Type species: Doris argo Linnaeus, 1767,
by subsequent designation (O’Donoghue 1929).

• Platydoris angustipes (Mörch, 1863)

....

  

Figure 7. Platydoris guarani, living animals. A. Dorsal view, specimen from Papagaio, Cabo Frio, Rio de Janeiro (MZSP 97331). B. Same, ventral view.

Platydoris guarani, living animals. C. Living animal with spawning, specimen from Enseada da Meia Lua, Cabo Frio, Rio de Janeiro (MZSP 97625).  

Figure 7. Platydoris guarani, living animals.
A. Dorsal view, specimen from Papagaio, Cabo Frio, Rio de Janeiro (MZSP 97331). B. Same, ventral view. C. Living animal with spawning, specimen from Enseada da Meia Lua, Cabo Frio, Rio de Janeiro (MZSP 97625).

All photograph by V. Padula. 

•  Platydoris guarani sp. n.

Etymology: The specific epithet is a noun in apposition, derived from the native Guarani indigenous people, some tribes of which still reside in Rio de Janeiro.

Diagnosis: Body of orange color, with a white ribbon on its edge and brown spots just above the ribbon (they can be seen both dorsally and ventrally). Radula with outermost teeth not spatulate, with apex hook-shaped; cusp simple and smooth. Presence of m4a and m7b odontophore muscles. Gonad readily visible. Absence of spines on internal surface of penis and vagina.

Distribution: Brazil (Valdés et al. 2006). Pernambuco: Fernando de Noronha (García et al. 2002); Alagoas: Saco da Pedra (Padula et al. 2012); Bahia: Praia de Itapoã (García et al. 2008); Rio de Janeiro: Cabo Frio: Ilha Comprida; Arraial do Cabo: Prainha (Alvim and Pimenta 2014).

Habitat: Under stones, associated with sponges and ascidians (García et al. 2002), from 0 to 17 m depth.

 Patricia O. V. de Lima and Luiz Ricardo L. Simone. 2018. Revision of Platydoris angustipes and Description of A New Species of Platydoris (Gastropoda: Nudibranchia) from southeastern Brazil based on Comparative Morphology. Zoosystematics and Evolution. 94(1); 1-15.  DOI: 10.3897/zse.94.14959

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

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شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا
شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.

[Ichthyology • 2017] Centrophorus longipinnis & C. lesliei • Revision of the Genus Centrophorus (Squaliformes: Centrophoridae): Part 2—Description of Two New Species of Centrophorus and Clarification of the Status of Centrophorus lusitanicus ---ScRaBBlE

Centrophorus longipinnis

 White, Ebert & Naylor, 2017

DOI:  10.11646/zootaxa.4344.1.3 

Abstract

Centrophorus specimens with a distinctive long-based first dorsal fin (long-finned species) have previously been considered to be Centrophorus lusitanicus first described from Portugal. Critical examination of the original description and illustration reveal that C. lusitanicus should be considered a junior synonym of C. granulosus. However, the specimen considered to be the syntype of C. lusitanicus in the Natural History Museum in London is clearly a long-finned species and not conspecific with C. granulosus. A more detailed investigation revealed that this specimen should not be considered a syntype and was likely not originally collected off the coast of Portugal. Investigation of long-finned specimens of Centrophorus from the Indo-West Pacific and Eastern Atlantic revealed that two undescribed species exist and are herein formally described as Centrophorus lesliei and C. longipinnis. The two species are similar morphologically and belong to the long-snout Centrophorus group (e.g. C. isodon and C. harrissoni) but are clearly separable based on their very long first dorsal fins. The two species differ in relative length of the first dorsal fin and several other characters. They also differ genetically. Nonmetric multidimensional ordination based on morphometric data reveals both species level and ontogenetic differences. A short erratum is also provided for Part 1 of this revision of the Centrophorus due to two figure related errors which may cause some confusion.

Keywords:  Pisces, Centrophorus, new species, Eastern Atlantic, Indo-West Pacific, genetics, taxonomy

FIGURE 11. Lateral view of Centrophorus longipinnis n. sp.:
 (A) adult male holotype (NMMB-P 15756, 720 mm TL); (B) female paratype (CSIRO H 8104 - 01, 855 mm TL); (C) female paratype (CSIRO H 7990 - 02, 825 mm TL); (D) late-term embryo paratype (CSIRO H 8103 - 02, 346 mm TL).

Centrophorus longipinnis n. sp.

Longfin Gulper Shark

 Etymology. Specific name a combination of the Latin longus (long) and pinna (fin) in allusion to the very distinctive long-based first dorsal fin this species possesses.

Distribution. Type material from off Taiwan (Cheng-gong and Da-xi fish landing sites—local fishing grounds), Indonesia (off southwest Java and eastern Lombok), and Papua New Guinea (Huon Gulf) (Fig. 10). Compagno et al. (2005) reported this species off Puerto Princesa City in the Philippines (JPAG 226, tissue accession GN4348); differed slightly in ND2 sequence and specimen not examined in this study. Limited depth information available as most specimens collected from fish landing sites; caught from depths of 330–460 m in Papua New Guinea (P. Neira, pers. comm.).

Centrophorus lesliei n. sp.

African Gulper Shark

Etymology. Named after Dr Robin Leslie (Fisheries Branch, Department of Agriculture, Forestry and Fisheries in South Africa) who has contributed greatly to our knowledge of southern African chondrichthyans and provided numerous important specimens and tissue samples for various projects.

Distribution. Type specimens were from the Mozambique Channel (Madagascar and Mozambique), and off Senegal, Côte d’Ivoire, Equatorial Guinea, and Togo at depths of 340– 500 m. The BMNH and ZMB specimens were most likely collected by Anchieta from Angola or Mozambique in the 1800’s. Additional specimens examined by Munoz-Chapuli & Ramos (1989) were recorded as being collected from Morocco, the Canary Islands, and Ghana at depths of 370– 610 m.

William T. White, David A. Ebert and  Gavin J. P. Naylor. 2017. Revision of the Genus Centrophorus (Squaliformes: Centrophoridae): Part 2—Description of Two New Species of Centrophorus and Clarification of the Status of Centrophorus lusitanicus Barbosa du Bocage & de Brito Capello, 1864. Zootaxa. 4344(1); 86–114. DOI:  10.11646/zootaxa.4344.1.3

 twitter.com/WillWhitesharks/status/927363194321903617

White, W.T., Ebert, D.A., Naylor, G.J.P., Ho, H.-C., Clerkin, P., Verissimo, A. and Cotton, C. 2013. Revision of the genus Centrophorus (Squaliformes, Centrophoridae), Part 1—Redescription of Centrophorus granulosus (Bloch & Schneider), a senior synonym of C. acus Garman and C. niaukang Teng. Zootaxa. 3752(1); 35–72.  DOI:  10.11646/zootaxa.3752.1.5

ResearchGate.net/publication/259444515_Revision_of_the_genus_Centrophorus_Part_1

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

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شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا
شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.

[Ichthyology • 2017] Palatogobius incendius • A New Mesophotic Goby (Teleostei: Gobiidae) from the Caribbean, and the First Record of Invasive Lionfish Preying on Undescribed Biodiversity ---ScRaBBlE

Palatogobius incendius 

Tornabene, Robertson & Baldwin, 2017

DOI:  10.1371/journal.pone.0177179

Abstract

A new species of deep-reef fish in the goby genus Palatogobius is described from recent submersible collections off Curaçao and Dominica. Video footage of schools of this species reveal predation by the invasive Indo-Pacific lionfish (Pterois spp.), the first record of undescribed fauna potentially being eaten by lionfish outside of its native range. We present molecular phylogenetic data for all valid species of Palatogobius and related genera, as well as a taxonomic key to the species of Palatogobius and a generic key to Palatogobius and related genera in the western Atlantic. Lastly, we discuss ecological and behavioral aspects of some deep-reef fishes in light of potential threats from invasive lionfish.

Fig 2. Palatogobius incendius, live in aquarium, USNM 415430, 18.3 mm SL, Curacao. Photo by Barry Brown. 

Fig 1. Palatogobius incendius, prior to preservation.
A) USNM 436470, tissue CUR15135, 19 mm SL, Curacao; B) USNM 436483, tissue CUR15148, 21 mm SL, Curacao; C) USNM 431354, tissue CUR14029, 22 mm SL, Curacao; D) USNM 435318, 18.1 mm, Curacao. Photos by Carole C. Baldwin. 

Palatogobius incendius Tornabene, D. Ross Robertson & Baldwin, sp. nov.

Diagnosis: Side of body with yellow/orange stripe along lateral midline, stripe continuing onto and extending entire length of caudal fin; second dorsal fin I,14–16; anal fin I,14–17; pectoral fin 18–20; no teeth on vomer; body scales absent except for occasionally 2 to 3 cycloid scales on base of caudal fin; interorbital pore C absent; interorbital pores D paired; eye diameter 7.0–9.0% SL.

Etymology: The specific epithet incendius is an adjective formed from the Latin root incendium meaning ‘fire.’ The scientific and proposed common names refer to the bright orange, yellow and reddish-pink coloration on the body, head and fins.

Fig 6. School of Palatogobius incendius at type locality, sta. CURASUB15-30, 152 m depth, Curacao. 

Habitat and distribution: Palatogobius incendius has been collected on deep reefs from Curacao (119–128 m) and Dominica (88–168 m) and observed off Roatan, Honduras (94–201 m). The species occurs exclusively in hovering schools ranging in size from as small as 5 to 10 individuals (rare) to 50->200 individuals (Fig 6). Schools are most frequently found at the top or bottom of vertical walls off Curaçao and Dominica, but off Roatan we observed more than a dozen schools of P. incendius collectively comprising as many as 1000 individuals over a long, gradually inclining stretch of sand and small rocks from ~150–170 m depth. Over this stretch, P. incendius co-occurred with many individuals of P. grandoculus, which were closer to the bottom rather than hovering well off the bottom like P. incendius. Schools of P. incendius generally comprise individuals at multiple life stages, ranging from moderately developed larvae (~9 mm SL) to adults. Off Dominica we also observed larger swarms of minuscule fish (~5 mm TL) that could possibly be very recently recruited P. incendius larvae, given their size, abundance and depth range. Individuals in these swarms were too small to be captured, and were observed traveling only a few cm off the bottom rather than hovering in a cloud well above the substrate. These schools of post-larvae were 1–2 m wide and up to 5 m long, and moved steadily upslope at approximately 0.15 m/s, navigating laterally around obstacles in a fashion superficially similar to a wide chain of marching army ants.

Luke Tornabene and Carole C. Baldwin. 2017. A New Mesophotic Goby, Palatogobius incendius (Teleostei: Gobiidae), and the First Record of Invasive Lionfish Preying on Undescribed Biodiversity. PLoS ONE. 12(5): e0177179.  DOI:  10.1371/journal.pone.0177179

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

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شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا
شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.

[Ornithology • 2017] Pyrrhula crassa • A New Extinct Species of Large Bullfinch (Aves: Fringillidae: Pyrrhula) from Graciosa Island (Azores, North Atlantic Ocean) ---ScRaBBlE

 [upper] Pyrrhula crassa  Rando, Pieper, Olson, Pereira & Alcover, 2017 
[lower] P. pyrrhula & P. murina. 

 possible aspect in life illustration: Pau Oliver. 

DOI: 10.11646/zootaxa.4282.3.9

Abstract

A new species of extinct bullfinch, Pyrrhula crassa n. sp., is described from bones found in Furna do Calcinhas, a small cave situated at Caldeira, a volcano located in the southeastern portion of the Graciosa Island (Azores archipelago, North Atlantic Ocean). It is the first extinct passerine bird to be described from this archipelago. Both skull and post-cranial bones are larger in the new species than in its relatives, the Eurasian Bullfinch (P. pyrrhula) and the Azores Bullfinch or “Priolo” from São Miguel Island (P. murina), the new species being the largest known in this genus. The morphology of its humerus and the estimated wing length and surface area seem to indicate a flying ability similar to that of the extant P. murina. The possible sources of colonization of the genus into Azores, causes and chronology of extinction of the new species are discussed

Keywords: Aves, Fringillidae, Pyrrhula

FIGURE 5. A: Skull and mandible, lateral view. From top to bottom: Pyrrhula pyrrhula, LARC 2328; P. murina, SPEA 120; Pyrrhula crassa n. sp., based on premaxilla MCMa 2006.016 and mandible MCMa 2002.016. The missing parts have been added using the equivalent parts of P. murina. Scale = 1 cm.
B: From top to bottom: aspect of extant P. pyrrhula; P. murina; and possible aspect in life of Pyrrhula crassa n. sp. (colours are speculative). Art by Pau Oliver.

Systematic paleontology

Order Passeriformes Linnaeus, 1758

Family Fringillidae (Vigors, 1825)

Subfamily Carduelinae Vigors, 1825

Tribe Pyrrhulini

Genus Pyrrhula Brisson, 1760

Pyrrhula crassa n. sp.

 Etymology. From Latin, crassa, thick, referring to the large size of the species and particularly to its notably heavy bill. 

Vernacular names proposed: Greater Azores Bullfinch (English) – Priolo maior dos Açores (Portuguese).

 J. C. Rando, H. Pieper, Storrs L. Olson, F. Pereira and J. A. Alcover. 2017. A New Extinct Species of Large Bullfinch (Aves: Fringillidae: Pyrrhula) from Graciosa Island (Azores, North Atlantic Ocean). Zootaxa. 4282(3); 567–583.  DOI: 10.11646/zootaxa.4282.3.9

Resumo Uma nova espécie extinta de Pyrrhula, P. crassa n. sp., é descrita a partir de ossos encontrados em a Furna do Calcinhas, uma pequena caverna situada na Caldeira, vulcão localizado no sudoeste da ilha Graciosa (Arquipélago dos Açores, Atlântico Norte). É a primeira ave Passeriforme extinta descrita neste arquipélago. Tanto o crânio e os ossos do seu esqueleto pós-craniano são maiores que os dos seus parentes, o dom-fafe Pyrrhula pyrrhula e o priolo Pyrrhula murina. A nova espécie é a maior do gênero. A morfologia do úmero e o tamanho estimado das suas asas indica uma capacidade para o voo semelhante a o priolo. As possíveis fontes de colonização dos Açores por Pyrrhula e as causas e cronologia da extin- ção da espécie nova são discutidas.

A new bird which humans drove to extinction discovered in Azores
phy.so/420358270   @physorg_com

New species of Pyrrhula described for Graciosa Island
gba.uac.pt/media/press&events/ver.php?id=661

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

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شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا
شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.