Ancient Phenotypes Revealed Through Present Day Species—A Morphological Analysis of Australia's Saw-Shelled Turtles Including the Threatened<i>Myuchelys bellii</i>(Testudines: Chelidae)

Fielder, Darren P.

doi:10.2744/ccb-0939.1

Cited by 6 publications

(8 citation statements)

References 16 publications

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“…data) clarified the identity and origin of the holotype of Phrynops bellii, and Cann (1998) provided circumstantial evidence that the type specimen was sourced from the Namoi and Gwydir river systems of Australia. Recent morphometric analyses have also supported Cann's (1998) match with the holotype specimen of Phrynops bellii (Fielder, 2013). The species was first transferred to the genus Elseya by Cann (1998), who also reported the occurrence of a population of similar turtles in Bald Rock Creek in the Queensland portion of the Border Rivers catchment, but was uncertain of its status.…”

Section: 2mentioning

confidence: 77%

“…Hatchlings almost circular in outline (mean carapace length 26.7 ± 0.3 mm; mean carapace width 26.8 ± 0.6 mm, n = 16), with moderate serration of the margins Georges and Thomson (2010). Subsequent molecular and morphological assessments have found no substantive genetic (Fielder et al 2012) or morphological (Fielder 2013) differences among populations from the Gwydir, Namoi, and Border Rivers catchments. They found little evidence to support any taxonomic subdivision of M. bellii at the species or subspecies level, as suggested by Cann (1998:208, 212).…”

Section: 3mentioning

confidence: 93%

“…1) are of intermediate size in comparison with other chelid turtles, but M. bellii is the largest species in Myuchelys. Sexual size dimorphism is moderate, with adult males (up to 227 mm carapace length) smaller than females (up to 300 mm carapace length) (Fielder 2013).…”

Section: 3mentioning

confidence: 99%

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Myuchelys bellii (Gray 1844) – Western Saw-shelled Turtle, Bell‘s Turtle.

Fielder¹,

Chessman²,

Georges³

2015

Chelonian Research Monographs

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Myuchelys bellii is an intermediate-sized short-necked freshwater turtle (Family Chelidae) with a range restricted to upland streams in the Namoi, Gwydir, and Border Rivers catchments of the Murray-Darling Basin, New South Wales and Queensland, Australia. Sexual size dimorphism is moderate, with adult males (up to 227 mm carapace length) smaller than females (up to 300 mm). The species occupies streams between 600 and 1100 m elevation that contain permanent pools deeper than about 2 m, frequently with granite boulders and bedrock, and often with underwater caverns formed by boulders, logs, and overhanging banks. In areas of lower water velocity, the typical substratum is coarse granitic sand overlain by fine silt, algal growth, and dense beds of macrophytes. The species has a nonspecialized omnivorous diet, which includes aquatic plants, algae, sponges, terrestrial fruits, aquatic insects, crayfish, and carrion. The species lays a single clutch of between 8 and 23 eggs per year in September-December and has one of the lowest reproductive outputs of any Australian chelid. Eggs hatch after 49-51 days, and hatchlings average 26.7 mm in carapace length. The species relies on aquatic respiration through cloacal bursae during inactive winter months to hibernate at depth, and has a crepuscular habit during the active months, using shallows and riffle zones for foraging at night. Threats include ongoing loss of riparian vegetation, loss of lotic habitat from water resource development and associated infrastructure, and physical modifications resulting from land clearing and livestock grazing, such as increased turbidity and infilling of deep pools. There is concern also for the impact of exotic nest predators, exotic fish, translocation of other native turtle species, and disease. No major conservation initiatives are currently directed at the species, but are planned under the draft recovery strategy of the NSW Office of Environment and Heritage. It is regarded as potentially vulnerable to extinction. DistriBution.-Australia. Restricted to upland streams of the Namoi, Gwydir, and Border Rivers catchments of the inland Murray-Darling Basin in northeastern New South Wales and extreme southeastern Queensland. synonymy.-Phrynops bellii Gray 1844, Hydraspis bellii, Elseya bellii, Wollumbinia bellii 1 , Wollumbinia bellii bellii 1 , Elseya latisternum bellii, Myuchelys bellii, Elseya dorriani Wells 2002 1 (nomen nudum), Wollumbinia bellii dorriani 1. suBspecies.-None currently recognized. status.

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Section: 2mentioning

confidence: 77%

Section: 3mentioning

confidence: 93%

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Myuchelys bellii (Gray 1844) – Western Saw-shelled Turtle, Bell‘s Turtle.

Fielder¹,

Chessman²,

Georges³

2015

Chelonian Research Monographs

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“…More recently, the use of the name Wollumbinia has been rejected by Kaiser et al (2013), a recommendation endorsed by the Australian Society of Herpetologists and other leading herpetological societies around the world. The most recent taxonomic review of the Australasian Chelidae (Thomson and Georges 2010) refers to this species as Myuchelys latisternum and this name has been subsequently used in a number of publications Thomson and Georges 2010;TTWG 2010TTWG , 2012Fielder et al 2012;Fielder 2013;Le et al 2013). However, both authors of this account believe that debate will continue over which generic name is valid.…”

Section: 2mentioning

confidence: 99%

Myuchelys latisternum (Gray 1867) – Sawshelled Turtle, Saw-Shell Turtle

Freeman¹,

Cann²

2014

Conservation Biology of Freshwater Turtles and Tortoises

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The Sawshelled Turtle, Myuchelys latisternum (Family Chelidae), is a small to medium-sized short-necked turtle (maximum recorded carapace length to 287 mm in females, 224 mm in males) endemic to northern and eastern Australia. Historically known for a long time as Elseya latisternum, the species has recently also been occasionally associated with the invalid genus name Wollumbinia. The species inhabits deep to shallow pools and lagoons on permanently flowing waterways, particularly in the upper reaches and side channels of larger rivers. Myuchelys latisternum is chiefly carnivorous, feeding on a variety of aquatic invertebrates, but will also consume fruit, and other vegetation. Nests are laid in fine sand or alluvial substrate on banks close to the water, with clutch size ranging from 9 to 20 eggs and oviposition recorded from September to March. The species is widespread and no significant current conservation threats have been identified. distribution.-Australia. The species has a broad distribution from the Richmond River in northern New South Wales north along the east coast of Queensland to the Jardine River at the tip of Cape York, around the rivers draining into the Gulf of Carpentaria to the headwaters of the Daly River in the Northern Territory. Occupies streams of the Arnhem Land Plateau and associated escarpment plunge pools, including those of the Liverpool, Katherine, South Alligator and Mary Rivers. synonymy.-Elseya latisternum Gray 1867, Emydura latisternum, Elseya latisternum latisternum, Wollumbinia latisternum, Myuchelys latisternum, Euchelymys spinosa Gray 1871a, Elseya latisternon Gray 1871b (nomen novum), Wollumbinia dorsii Wells 2009 (nomen illegitimum). subspeCies.-None currently known. stAtus.

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“…Os grupos diferem na morfologia da cabeça, pescoço e casco, em aspectos que podem ser relacionados à predação de peixes, que é amplamente difundida no gênero (Thomson, 2003 Seddon et al (1997) e Georges et al (1998). Wells & Wellington (1985) e McCord & Joseph-Ouni (2007) consideram que os subgêneros devam ser elevados a gênero, mas os autores encontram pouco respaldo da comunidade científica especializada (Georges & Thomson, 2010;Kuchling, 2010;TTWG, 2012;ICZN, 2013) Outros exemplos de mudanças/revisões taxonômicas podem ser observadas pelo histórico de Elseya, Emydura, e descrições de novos gêneros como Elusor, Rheodytes e Myuchelys (Georges & Adams, 1996;Thomson, 1997;Thomson & Mackness, 2000;Thomson & Georges, 2009;Georges & Thomson, 2010;Fielder, 2013;Le et al, 2013;Todd et al, 2014;Freeman & Cann, 2014;Georges et al, 2014).…”

Section: A Família Chelidaeunclassified

Variação morfológica e molecular das populações de Mesoclemmys vanderhaegei (Testudines: Chelidae)

Souza¹

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Agradecimentos À Dra. Erika Hingst-Zaher por me acolher em seu laboratório, me indicar ao Hussam, e estar sempre disposta a me ajudar com este projeto e a crescer como pesquisador. Muitíssimo obrigado! Ao prof. Dr. Hussam Zaher, orientador sempre disposto a discutir e instruir quando solicitado e que gentilmente me cedeu este excelente projeto e ofereceu todo suporte estrutural, financeiro e intelectual necessário para a conclusão dos trabalhos. Ao prof. Dr. Flavio Molina, por ceder seu tempo e paciência para auxiliar o desenvolvimento deste projeto com o seu vasto conhecimento em quelônios. Ao diretor do Museu Biológico do Instituto Butantan, Giuseppe Puorto, por abrir as portas do Butantan e viabilizar o acesso e convivência na instituição. À Hana Suzuki pelos conselhos e diversas caronas na volta do MZUSP! À Mariana Soler e Michelle Campagner pela amizade e suporte, e aos

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Ancient Phenotypes Revealed Through Present Day Species—A Morphological Analysis of Australia's Saw-Shelled Turtles Including the ThreatenedMyuchelys bellii(Testudines: Chelidae)

Cited by 6 publications

References 16 publications

Myuchelys bellii (Gray 1844) – Western Saw-shelled Turtle, Bell‘s Turtle.

Myuchelys bellii (Gray 1844) – Western Saw-shelled Turtle, Bell‘s Turtle.

Myuchelys latisternum (Gray 1867) – Sawshelled Turtle, Saw-Shell Turtle

Variação morfológica e molecular das populações de Mesoclemmys vanderhaegei (Testudines: Chelidae)

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