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Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 3
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An investigation into the taxonomy of Dendrelaphis tristis (Daudin, 1803): revalidation of Dipsas schokari (Kuhl, 1820) (Serpentes, Colubridae) Naturalis
Rooijen, J. van; Vogel, G..
The taxonomic status of the colubrid snake Dendrelaphis tristis (Daudin, 1803) was investigated on the basis of morphological data taken from 64 museum specimens. Univariate and multivariate analyses of these data reveal that Dendrelaphis tristis is composed of two species. One of these species agrees with the description of Dipsas schokari Kuhl, 1820 which is revalidated in the combination Dendrelaphis schokari (Kuhl, 1820). The syntypes of D. schokari have been lost and a type for D. tristis has never been deposited in a collection. Neotypes are designated and described for both species in order to stabilize the names. D. schokari differs from D. tristis in having a lower number of ventrals and subcaudals, a larger eye, a shorter vertebral stripe and the...
Tipo: Article / Letter to the editor Palavras-chave: Dendrelaphis; Dendrelaphis tristis; Dipsas schokari; Taxonomy; India; Western Ghats; Sri Lanka; 42.82.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/269646
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Estimating the snake species richness of the Santubong Peninsula (Borneo) in two different ways Naturalis
Rooijen, J. van.
The distribution of Borneo’s species across the island is far from well-known. This is particularly true for snakes which are hard to find. Given the current rate of habitat destruction and consequent need for conservation strategies, more information is required as to the species composition and richness of specific areas of potential conservation priority. An example is the Santubong Peninsula, Sarawak, Malaysia, part of which has recently been gazetted as a National Park. In this paper, the snake species richness of the Santubong Peninsula is estimated on the basis of data obtained during 450 survey-hours. Thirty-two species were recorded. Negative exponential and Weibull functions were fitted to the rarefaction curve. The Weibull function exhibited a...
Tipo: Article / Letter to the editor Palavras-chave: Chao I estimator; Negative exponential function; Rarefaction curve; Santubong Peninsula Borneo; Snakes; Species richness; Weibull function; 42.82.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/320292
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On the discovery and origin of a Javan population of the Indochinese colubrid snake Dendrelaphis subocularis (Boulenger, 1888): a multivariate study Naturalis
Rooijen, J. van; Vogel, G..
The colubrid snake Dendrelaphis subocularis is distributed throughout Indochina, the southern limit of its range corresponding with the Isthmus of Kra, an important biogeographic barrier that separates the Indochinese biota from the Sundaic biota. This study presents five museum specimens that represent a hitherto unknown population that inhabits the Sundaic island Java. Thus, the distribution of Dendrelaphis subocularis is disjunct, with the Javan population being isolated by 2000 kilometres from the nearest mainland population. Principal Components Analysis was applied to morphological data taken from the five Javan specimens as well as from 26 museum specimens of Indochinese origin. Regression analysis of the spatial pattern of the resulting scores...
Tipo: Article / Letter to the editor Palavras-chave: Indochina; Java; Sweepstake dispersal; Taxonomy; Vicariance; 42.82.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/349893
Registros recuperados: 3
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