[Herpetology • 2018] A Biogeographic and Ecological Perspective to the Evolution of Reproductive Behaviour in the Family Salamandridae ---ScRaBBlE

Kieren, Sparreboom, Hochkirch & Veith, 2018. 

   DOI: 10.1016/j.ympev.2018.01.006

Highlights

• The family Salamandridae is of Western Palearctic origin and started to diversify in the Late Cretaceous.

• The common ancestor was oviparous, mated on land without amplexus and probably showed a pin wheel spermatophore transfer.

• Colonization took place once to the Nearctic and twice to Eastern Asian realms.

• Changes in habitat type are not significantly correlated with changes in mating characters.

Abstract

Amphibians have a complex reproductive behaviour, which shows the highest diversity among tetrapodes. The family Salamandridae, distributed across the entire Holarctic, is one of the most diverse groups of extant salamanders comprising 114 species in 21 genera. The family has a remarkable diversity of courtship modes, amplexus and sperm transfer. It is often hypothesised that this diversity has evolved in adaptation to a specific mating and/or breeding habitat. We test this hypothesis based upon a phylogenetic reconstruction using the complete mitochondrial genome sequences of 45 Salamandridae species, representing all existing genera. We used ancestral character state reconstruction methods and geographic range models and applied relaxed Bayesian molecular clock models to discuss the results in a temporal framework of Salamandridae evolution. Our results show that the family Salamandridae started to diversify in the Late Cretaceous (ca. 87 mya) and is of Western Palearctic origin. Ancestral character state reconstruction predicts that its common ancestor was oviparous, mated on land without amplexus and probably showed a pin wheel spermatophore transfer, which is still found in the Italian endemic Salamandrina terdigidata. Our results suggest that several colonization of continents with subsequent radiations took place, once to the Nearctic and twice into Eastern Asian realms. However, these events were only in one case associated with a change in mating behaviour (dorsal amplexus in Nearctic newts). Around the Cretaceous-Paleogene boundary (K-Pg boundary) several Salamandridae lineages further diverged, again with no obvious changes in mating behaviour. Overall, there is no significant signal for mating character evolution being caused by changes in habitat type, with only a slight tendency that changes in mating habitat might have led to changes in the type of sperm transfer which in turn was associated with changes in the presence or absence of amplexus.

Keywords: Mitogenomics; Bayesian molecular dating; geographic range; mating behaviour; ancestral character state reconstruction; coevolution

Sarah Kieren, Max Sparreboom, Axel Hochkirch and Michael Veith. 2018. A Biogeographic and Ecological Perspective to the Evolution of Reproductive Behaviour in the Family Salamandridae. Molecular Phylogenetics and Evolution. In Press.   DOI: 10.1016/j.ympev.2018.01.006

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

من هنا

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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.

[Entomology • 2017] Pyrophleps ellawi • A New Species of Wasp-mimicking Clearwing Moth (Lepidoptera, Sesiidae) from Peninsular Malaysia with DNA Barcode and Behavioural Notes ---ScRaBBlE

 Pyrophleps ellawi Skowron Volponi, 2017

Figure 1. Pyrophleps ellawi has a strong blue sheen in sunlight. Representatives of this species vary in the number of orange scales on the thorax. The scales form two longitudinal stripes, either dashed or solid.

DOI: 10.3897/zookeys.692.13587 

Abstract

A new species of clearwing moth, Pyrophleps ellawi Skowron Volponi, sp. n., is described from Peninsular Malaysia. Information on the habitat, time and conditions of occurrence, flight and mud-puddling behaviour, functional morphology, and DNA barcode are also provided. Photographs and a supplementary video from the wild demonstrate the postures and behaviour of this species of Pyrophleps, whose remaining members were described only on the basis of pinned specimens. This is the first record of this genus in Peninsular Malaysia.

Keywords: Sesiidae, clearwing moth, Pyrophleps ellawi, mimicry, mud-puddling, behaviour, Malaysia

Figure 3. Male holotype of Pyrophleps ellawi.

Diagnosis: The new species is superficially most similar to Pyrophleps vitripennis, from which it can easily be distinguished by the configuration of male genitalia (compare Fig. 4 herein with Arita and Gorbunov 2000, fig. 6), presence of hair-like scales on labial palpi (smoothly scaled in species compared), presence of orange hair-like scales on fore- and mid tibiae and lack of orange scales on wings, broader external transparent area of forewing. Apart from morphological features, P. ellawi shows 8% COI sequence divergence from P. vitripennis (Table 1). Based on genitalia configuration, this species is most similar to P. nigripennis. However, it differs in the shape of the valva and gnathos. Besides that, it can immediately be distinguished by the well-developed transparent areas of forewing (compare Fig. 3 herein with Arita and Gorbunov 2000, fig. 8), narrow discal spot on hindwing and by the colouration of the hind leg tuft (extensive red both externally, on tibia, and internally, on tibiae and tarsi, in P. nigripennis). From P. ruficrista it differs in more developed forewing ATA and PTA and less developed ETA and in the hind leg tuft (cinnabar red with two black spots and patches of blue scales in P. ruficrista). From P. cruentata, P. haematochrodes , P. cucphuonganae and P. bicella, it can be distinguished by the entirely transparent hindwings and absence of red scales on wings and abdomen.

Figure 1. Pyrophleps ellawi has a strong blue sheen in sunlight. Representatives of this species vary in the number of orange scales on the thorax. The scales form two longitudinal stripes, either dashed or solid. 

Figure 2. Pyrophleps ellawi puddling on a river bank. Note the curled-up hind leg tarsi.

Etymology: The species is named after our dear friend El Law, a dedicated conservation activist with sincere sensibility for Malaysian nature who, over the years of our studies on Malaysian Sesiidae, offered us his help in countless aspects.

Distribution and habitat: In addition to the type locality, the species is known also from the Taman Negara National Park, Malaysia, where it was observed and filmed in two locations approx. 50 km from each other. All observations were done on sandy and pebble river banks exposed to sunlight, in a lowland dipterocarp forest (Fig. 5)

Figure 5. Habitat of Pyrophleps ellawi: sandy/pebble river banks in a lowland dipterocarp forest, Malaysia.

Conclusion: 

The new wasp-mimicking species of Sesiidae, Pyrophleps ellawi, represents the first record of the genus Pyrophleps in Peninsular Malaysia and the first filmed in the wild. The video realized in its habitat provided valuable information on its authentic habitus, functional morphology, and behaviour.

 Marta Skowron Volponi and Paolo Volponi. 2017. A New Species of Wasp-mimicking Clearwing Moth from Peninsular Malaysia with DNA Barcode and Behavioural Notes (Lepidoptera, Sesiidae). ZooKeys. 692: 129-139.  DOI: 10.3897/zookeys.692.13587

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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.

[Ornithology • 2017] Taxonomic Status of Parotia berlepschi Kleinschmidt, 1897 (Aves: Paradisaeidae) based on Analysis of External Appearance, Voice and Behavior ---ScRaBBlE

Parotia berlepschi  Kleinschmidt, 1897

Scholes, Beehler & Laman. 2017. Taxonomic Status of Parotia berlepschi based on .... 

DOI:  10.11646/zootaxa.4329.6.2

photo: Tim Laman  nationalgeographic.com 

Abstract

Described from trade-skins of unknown origins, Parotia berlepschi Kleinschmidt, 1897 was the subject of a longstanding ornithological mystery that remained unresolved for well over a century. With few specimens and no known wild population, most taxonomic assessments over the last century have treated P. berlepschi as a subspecies of Parotia carolae Meyer, 1894. Following discovery of its geographical home in 2005, most authorities returned to giving P. berlepschi full species status. However, evidence supporting the delineation of P. berlepschi from P. carolae has not yet been fully articulated in the literature. Here, we assess phenotypic differentiation and the taxonomic status of P. berlepschi relative to P. carolae based on specimens and recordings of wild birds. With regard to external appearance and voice, which are important intersexual signals among polygynous birds-of-paradise, our analysis confirms that P. berlepschi is well-differentiated from P. carolae and should be treated as specifically distinct. Evidence for differentiation in courtship behavior is inconclusive and requires further study.

Keywords:  Aves, New Guinea, Foja Mountains, Bronze Parotia, bird-of-paradise, courtship phenotype, lectotype

male Berlepsch’s Six-wired Bird of Paradise, Parotia berlepschi.

photo: Bruce Beehler 

A male bronze parotia bird of paradise on the perch at his display court, holding a leaf fragment in his bill as part of his display.

photo: Tim Laman gettyimages.fr/photos/foja-mountains 

 Parotia berlepschi Kleinschmidt, 1897 

photo: Tim Laman  nationalgeographic.com  

Edwin Scholes, Bruce M. Beehler and Timothy G. Laman. 2017. Taxonomic Status of Parotia berlepschi Kleinschmidt, 1897 based on Analysis of External Appearance, Voice and Behavior (Aves: Paradisaeidae). Zootaxa. 4329(6); 560–573.  DOI:  10.11646/zootaxa.4329.6.2

“Lost Bird of Paradise Found, In Paradise | @GrrlScientist” by @GrrlScientist medium.com/@GrrlScientist/lost-bird-of-paradise-found-in-paradise-grrlscientist-2364da02ec80

   

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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.

[PaleoEntomology • 2017] Yijenplatycnemis huangi • Extreme Adaptations for Probable Visual Courtship Behaviour in A Cretaceous Dancing Damselfly ---ScRaBBlE

Yijenplatycnemis huangi

 Zheng, Nel, Jarzembowski, Chang, Zhang, Xia, Liu & Wang, 2017

Illustration by D. Zheng. DOI: 10.1038/srep44932 

Abstract

Courtship behaviours, frequent among modern insects, have left extremely rare fossil traces. None are known previously for fossil odonatans. Fossil traces of such behaviours are better known among the vertebrates, e.g. the hypertelic antlers of the Pleistocene giant deer Megaloceros giganteus. Here we describe spectacular extremely expanded, pod-like tibiae in males of a platycnemidid damselfly from mid-Cretaceous Burmese amber. Such structures in modern damselflies, help to fend off other suitors as well as attract mating females, increasing the chances of successful mating. Modern Platycnemidinae and Chlorocyphidae convergently acquired similar but less developed structures. The new findings provide suggestive evidence of damselfly courtship behaviour as far back as the mid-Cretaceous. These data show an unexpected morphological disparity in dancing damselfly leg structure, and shed new light on mechanisms of sexual selection involving intra- and intersex reproductive competition during the Cretaceous.

Figure 5: Reconstruction showing the courtship behaviour of Yijenplatycnemis huangi gen. et sp. nov. from the mid-Cretaceous tropical forest in Burma (drawn by Daran Zheng). 

Figure 1: Yijenplatycnemis huangi gen. et sp. nov.
Holotype (NIGP164757); photograph (A) and line drawing (B) of specimen (drawn by DZ). Paratype (BA16200); dorsal view (C) and anterior view (D) of specimen. 

Systematic palaeontology

Order Odonata Fabricius, 1793

Suborder Zygoptera Selys-Longchamps, 1854

Superfamily Coenagrionoidea Kirby, 1890

Family Platycnemididae Yakobson & Bianchi, 1905

Subfamily Palaeodisparoneurinae Poinar et al. 2011

Yijenplatycnemis huangi gen. et sp. nov

Etymology: The generic name is after Mr Huang Yijen, the donator of the type specimen, and the typical genus Platycnemis. The specific name is after Mr. Huang Yijen. Gender masculine.

Diagnosis: Very small damselfly, complete wing length about 11–14 mm; DC closed and quadrangular with MAb perpendicular to MAa; five postnodal and five postsubnodal crossveins present, somewhat aligned; only one postnodal crossvein present distal of Pt; midfork slightly basal of N; RP1 with strong angle below very long pterostigmal brace; area between RA and RP1 greatly widened distal of Pt; IR2 aligned with Sn; IR1 short, originating below Pt; MA long, ending on posterior wing margin below base of RP2; MP short, one or two cells long; CuA reduced to oblique vein; Pt very small, less than half length of surrounding cells; all tibiae spectacularly expanded, covered with two brown bands, in pod-like sclerite except on metatibiae where of semi-circular shape.

.....

Daran Zheng, André Nel, Edmund A. Jarzembowski, Su-Chin Chang, Haichun Zhang, Fangyuan Xia, Haoying Liu & Bo Wang. 2017. Extreme Adaptations for Probable Visual Courtship Behaviour in A Cretaceous Dancing Damselfly.  Scientific Reports. 7, 44932. DOI: 10.1038/srep44932

Courtship behavior trapped in 100-million-year-old amber
https://eurekalert.org/e/7kZx via @EurekAlert

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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.

[Entomology • 2017] Themira lohmanus • Hidden in the Urban Parks of New York City: A New Species of Themira (Sepsidae, Diptera) Described Based on Morphology, DNA Sequences, Mating Behavior, and Reproductive Isolation ---ScRaBBlE

 Themira lohmanus   Ang, 2017

DOI: 10.3897/zookeys.698.13411 

Abstract

New species from well-studied taxa such as Sepsidae (Diptera) are rarely described from localities that have been extensively explored and one may think that New York City belongs to this category. Yet, a new species of Themira (Diptera: Sepsidae) was recently discovered which is currently only known to reside in two of New York City’s largest urban parks. Finding a new species of Themira in these parks was all the more surprising because the genus was revised in 1998 and is not particularly species-rich (13 species). Its status is confirmed as a new species based on morphology, DNA sequences, and reproductive isolation tests with a closely related species, and is described as Themira lohmanus Ang, sp. n. The species breeds on waterfowl dung and it is hypothesized that this makes the species rare in natural environments. However, it thrives in urban parks where the public feeds ducks and geese. The mating behavior of Themira lohmanus was recorded and is similar to the behavior of its closest relative T. biloba.

Keywords: cryptic species, Sepsidae, species description

Figure 2. Adult male (A–M), showing lateral (A) and dorsal (B) views of habitus, anterior (C) and ventral (D) views of head capsule, anterior and posterior views of fore leg (E), mid leg (F) and rear leg (G); ventral view of abdomen (H) showing modified 4th sternites; anterior (I), dorsal (J), left (K) and right (L) views of hypopygium, as well as various views of the penis (M).

Figure 3. Adult female (A–H), showing lateral (A) and dorsal (B) views of habitus (sans abdomen), anterior (C) and ventral (D) views of head capsule, anterior and posterior views of fore leg (E), mid leg (F) and rear leg (G), and ventral view of abdomen (H).

Themira lohmanus Ang, sp. n.

Diagnosis:  Themira lohmanus is a relatively large, robust-looking sepsid species that resembles T. biloba. However, adult T. lohmanus males can be readily differentiated from the latter by their uniquely shaped, asymmetrical surstyli, which is symmetrical in T. biloba (Fig. 1A, see Morphological analysis section). While females of these two species do not have distinct structural differences, they can potentially be distinguished based on the color of the sclerous cuticle: in T. biloba, it tends to be glossy black while T. lohmanus tends to have a cupreous tinge. However, these characters may not be easily differentiated in faded specimens.

Etymology:  The new species is named after David J. Lohman, for his generous contributions of specimens to sepsid taxonomy.

Distribution: Nearctic. Thus far only found in New York City (Central Park and Prospect Park); likely to be found in more localities in the future, especially where waterfowl congregate.

 Yuchen Ang, Rudolf Meier, Kathy Feng-Yi Su and Gowri Rajaratnam. 2017. Hidden in the Urban Parks of New York City: Themira lohmanus, A New Species of Sepsidae Described Based on Morphology, DNA Sequences, Mating Behavior, and Reproductive Isolation (Sepsidae, Diptera).  ZooKeys. 698; 95-111.  DOI: 10.3897/zookeys.698.13411

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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.

[Mammalogy • 2017] Typhlomys chapensis • A Blind Climber: The First Evidence of Ultrasonic Echolocation in Arboreal Mammals ---ScRaBBlE

Typhlomys chapensis Osgood, 1932

Panyutina, Kuznetsov, Volodin, et al., 2017.

DOI: 10.1111/1749-4877.12249 

Abstract

 The means of orientation is studied in the Vietnamese pygmy dormouse Typhlomys chapensis, a poorly known enigmatic semi-fossorial semi-arboreal rodent. Data on eye structure are presented, which prove that Typhlomys (translated as "the blind mouse") is incapable of object vision – the retina is folded and retains no more than 2 500 ganglion cells in the focal plane, and the optic nerve is subject to gliosis. Hence, Typhlomys has no other means for rapid long-range orientation among tree branches other than echolocation. Ultrasonic vocalization recordings at the frequency range of 50-100 kHz support this hypothesis. The vocalizations are represented by bouts of up to 7 more or less evenly-spaced and uniform frequency-modulated sweep-like pulses in rapid succession. Structurally, these sweeps are similar to frequency-modulated ultrasonic echolocation calls of some bat species, but they are too faint to be revealed with a common bat detector. When recording video simultaneously with the ultrasonic audio, a significantly greater pulse rate during locomotion compared to that of resting animals has been demonstrated. Our findings of locomotion-associated ultrasonic vocalization in a fast-climbing but weakly-sighted small mammal ecotype add support to the "echolocation-first theory" of pre-flight origin of echolocation in bats.

 Key words: ultrasonic echolocation, locomotor behaviour, arboreal locomotion, reduced eyes, Typhlomys, Rodentia

Figure 1 Vietnamese pygmy dormouse Typhlomys chapensis. Its reduced eyes are reflected in the generic name, which means “the blind mouse.”

Concluding remarks. The major limitations of our study were the small number of live individuals to experiment with and the poor quality of dead specimens for histology. This is due to the extreme rarity of the Vietnamese pygmy dormouse, or "blind mouse" in nature. That is why our conclusions, though rather convincing, are still preliminary. Additional research is required to describe in detail the acoustic patterns of ultrasonic pulses and bouts in Typhlomys and to compare them with the known acoustics of bats and with non-echolocation ultrasonic calls of other rodents. A remaining question is the mechanism of signal production – is it located in the larynx? and is the animal entirely incapable to communicate in the human-audible range indeed? It will be of interest to investigate the degree of eye degeneration and development of echolocation in a closely related and very similar species, the Chinese pygmy dormouse – Typhlomys cinereus.

Aleksandra A. Panyutina, Alexander N. Kuznetsov, Ilya A. Volodin, Alexey V. Abramov and Irina B. Soldatova. 2017. A Blind Climber: The First Evidence of Ultrasonic Echolocation in Arboreal Mammals. Integrative Zoology. 12(2); 172–184.  DOI: 10.1111/1749-4877.12249

ResearchGate.net/publication/311760839_A_blind_climber_The_first_evidence_of_ultrasonic_echolocation_in_arboreal_mammals

 Video: Blind mouse navigates like a bat sciencemag.org/news/2017/01/video-blind-mouse-navigates-bat

Blind climber science.sciencemag.org/content/355/6322/258.5

An echolocating dormouse could reveal the origins of one of nature's coolest superpowers http://po.st/YfQ1MK  @SmithsonianMag

Rare rodent is the first tree-climbing mammal known to echolocate like a bat | MNN  mnn.com/earth-matters/animals/stories/rare-rodent-first-tree-climbing-mammal-known-echolocate-bat

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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.

[Herpetology • 2017] Preliminary Estimation of Home Range Size for Meristogenys orphnocnemis, A Common Bornean Ranid, in An Altered Forest Ecosystem using Radiotelemetry ---ScRaBBlE

Meristogenys orphnocnemis (Matsui, 1986)

[upper] Female Meristogenys orphnocnemis showing transmitter and attachment belt.

[lower] Section of stream in SAFE Project experimental site, known as logged forest edge (LFE) stream, where all radiotracking occurred.

RAFFLES BULLETIN OF ZOOLOGY. 65

Abstract

 We tracked six female Meristogenys orphnocnemis for 17 ± 4.3 days (11.5–22 days) in Sabah, Malaysian Borneo to determine core area (home range size) and movement patterns. We found that the core usage area was 3351.0 ± 963.4 m2 . Mean distance of each female from the stream during tracking was between 4.9–29.3 m and median distance from the stream for individual females was 4–20 m. Net distance between first and last observation was 80.6 ± 24.5 m, and there was no relationship between number of days tracked and total distance traversed or core area size, nor between body size and core area size, though our sample sizes were likely too small to detect such patterns. We suggest additional radio-tracking to determine differences in movement ecology between sexes and across species, to better predict impacts on anurans from logging and fragmentation in Southeast Asia.

 Key words. behaviour, radio-tracking, frogs, Malaysia

Fig. 1. Section of stream in SAFE Project experimental site, known as logged forest edge (LFE) stream, where all radiotracking occurred.

 Jennifer A. Sheridan, Nicolas Rakotopare and Rachel Mebberson. 2017. Preliminary Estimation of Home Range Size for Meristogenys orphnocnemis, A Common Bornean Ranid, in An Altered Forest Ecosystem using Radiotelemetry. RAFFLES BULLETIN OF ZOOLOGY. 65; 539–544. 

http://lkcnhm.nus.edu.sg/app/uploads/2017/04/65rbz539-544.pdf

    

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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.