Cyrnolutra castiglionis, une nouvelle forme de loutre (Mustelidae, Lutrinae), dans un dépôt du Pléistocène moyen « Castiglione 3CG »(Oletta, Haute-Corse)

Pereira, Elisabeth; Salotti, Michelle

doi:10.1016/s1251-8050(00)00212-3

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…(2006), c Malatesta (1970), d Sotnikova (2001), e own data, f Schütt (1973), g Bate (1903), h Theodorou et al. (2007), i Larivière & Calzada (2001), j Willemsen (1992), k Symeonides & Sondaar (1975), l Hwang & Larivière (2005), m Willemsen (2006), n Pereira & Salotti (2000), o Willemsen (1983), p Ogino & Otsuka (2008), q Burgio & Fiore (1997), r Rook (1995).…”

Section: Resultsmentioning

confidence: 99%

Body size of insular carnivores: evidence from the fossil record

Lyras

Geer

Rook

2010

Journal of Biogeography

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Aim Our goals here are to: (1) assess the generality of one aspect of the island rule – the progressive trend towards decrease in size in larger species – for fossil carnivores on islands; (2) offer causal explanations for this pattern and deviations from it – as far as fossil carnivores are concerned; and (3) estimate the speed of this trend. Location Oceanic and oceanic‐like islands world‐wide. Methods Body size estimates of fossil insular carnivores and of their phylogenetically closest mainland relative were obtained from our own data and the published literature. Our dataset consisted of 18 species from nine islands world‐wide. These data were used to test whether the body size of fossil insular carnivores varies as a function of body size of the mainland species in combination with characteristics of the island ecosystem. Results Dwarfism was observed in two canid species. Moderate decrease in body mass was observed in one hyena species. Gigantism was observed in one otter species. Moderate body mass increase was observed in two otter species, one galictine mustelid and perhaps one canid. Negligible or no change in body mass at all was observed in five otter species, three galictine mustelids and one genet. Size changes in teeth do not lag behind in comparison to skeletal elements in the dwarfed canids. The evolutionary speed of dwarfism in a canid lineage is low. Main conclusions Size change in fossil terrestrial insular carnivores was constrained by certain ecological conditions, especially the availability of prey of appropriate body size. When such alternative prey was not available, the carnivores retained their mainland size. The impact of competitive carnivores seems negligible. The case of (semi‐)aquatic carnivores is much less clear. The species that maintained their ancestral body mass may have changed their diet, as is evidenced by their dentition. Among the otters, one case of significant size increase was observed, perhaps best explained as being due to it entering the niche of an obligate aquatic otter. Dwarfism was not observed in otters. The island rule seems to apply to fossil carnivores, but with exceptions. The dependency of the island rule on resource availability is emphasized by the present study.

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Section: Resultsmentioning

confidence: 99%

Body size of insular carnivores: evidence from the fossil record

Lyras

Geer

Rook

2010

Journal of Biogeography

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“…5, 6). Classified among the Lutrini are Paralutra from Europe (Roman & Viret, 1934), Algarolutra (Malatesta & Willemsen, 1989), Sardolutra (Willemsen, 1992), Cyrnoluta (Pereira & Salotti, 2000) and Megalenhydris (Willemsen, & Malatesta, 1987) from the Mediterranean, Lutrogale (Gray, 1865), Lontra (Gray, 1843), Pteronura (Gray, 1837), and Satherium (Gazin, 1934) from America, and Lutra maculicollis and Torolutra (Petter, Pickford & Howell, 1991) from Africa. Among these genera, the Indian fossils have been reported as being closest morphologically to Lutra sumatrana, the extant hairy-nosed otter of Southeast Asia (Lydekker, 1884;Pohle, 1919).…”

Section: Discussionmentioning

confidence: 99%

First fossil small-clawed otter, <i>Amblonyx</i>, with a note on some specimens of <i>Lutra</i>, from the Upper Siwaliks, India

Raghavan¹,

Pickford²,

Patnaik³

et al. 2007

Estud. geol.

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Otter-like mammals have been reported from the Indian sub-continent for more than a century and a half. Enhydriodontini are far more common and have a longer fossil record than either Lutrini or Aonychini. This paper describes and interprets two fossils from the Pleistocene of Panchkula and Pipalwala, India. The Panchkula specimen represents a large species of Amblonyx (Aonychini) whereas the Pipalwala specimen is likely to represent a large individual of Lutra palaeindica (Lutrini).Key words: Otters, Amblonyx, Lutra, Pleistocene, India, Siwaliks, new species. RESUMENMamíferos de tipo nutria han sido señalados en el subcontinente Indio desde hace más de un siglo y medio. Los Enhydriodontini son de lejos los más comunes y tienen un mayor registro fósil que los Lutrini o los Aonychini. En este trabajo describimos e interpretamos dos fósiles procedentes del Pleistoceno de Panchkula y Pipalwala, India. El ejemplar de Panchkula representa una especie de talla grande de Amblonyx (Aonychini), mientras que el ejemplar de Pipalwala representa a un individuo de talla grade de Lutra paleoindica (Lutrini).

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