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Registros recuperados: 169
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Amphibians from Liberia and the Gold Coast Naturalis
Parker, H.W..
Thanks to the courtesy of Drs. Boschma and Brongersma the author has been privileged to examine a large series of West African amphibians from the collections of the Royal Museum of Natural History in Leiden. Of the comparatively easily accessible parts of Africa, Liberia is probably the least known, in so far as its herpetological fauna is concerned, and consequently it is not surprising to find that the present material contains much of interest. The following notes concern some of the more obvious points which arise out of the material examined and do not purport to be in any way exhaustive. The author is indebted not only to the gentlemen already mentioned, but also to M. Angel and Mr. Loveridge who have most generously placed at his disposal material...
Tipo: Article / Letter to the editor Palavras-chave: 42.82.
Ano: 1936 URL: http://www.repository.naturalis.nl/record/319427
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An annotated checklist of the lizards of French Guiana, mainly based on two recent collections Naturalis
Hoogmoed, M.S.; Lescure, J..
At the moment 36 species of lizards (6 Gekkonidae, 12 Iguanidae, 1 Scincidae and 17 Teiidae) are known for certain to occur in French Guiana. Of these 36 species, four are reported from that country for the first time (Anolis marmoratus speciosus Garman, Cercosaura o. ocellata Wagler, Prionodactylus argulus (W. Peters) and Tretioscincus agilis (Ruthven)). Moreover, there remain four species of which the occurrence in French Guiana is very likely and which presumably will be found when more lizards are collected by specialists. Eleven species were erroneously reported from French Guiana by various authors. The reasons for their removal from the list of French Guianese lizards are given. The zoogeographical conclusions of Hoogmoed (1973) remain valid,...
Tipo: Article / Letter to the editor Palavras-chave: 42.82.
Ano: 1975 URL: http://www.repository.naturalis.nl/record/318352
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An annotated review of the Salamander types described in the Fauna Japonica Naturalis
Hoogmoed, M.S..
The whereabouts of the salamander types described by Temminck & Schlegel in the Fauna Japonica (1838) are discussed and lectotypes are selected from the syntypes for the following nominal species : Salamandra naevia Temminck & Schlegel, S. unguiculata Temminck & Schlegel, S. subcristata Temminck & Schlegel, Molge pyrrhogaster Boie, S. nebulosa Temminck & Schlegel, S. maxima Temminck & Schlegel, Triton japonicus Temminck, S. Genei Temminck & Schlegel, Onychodactylus Schlegeli Tschudi and Megalobatrachus Sieboldii Tschudi. The holotype of S. pleurodeles Temminck & Schlegel was located and designated as lectotype of Pleurodeles waltl Michahelles. Also the holotype of S. scutata Temminck & Schlegel was found.
Tipo: Article / Letter to the editor Palavras-chave: 42.82.
Ano: 1978 URL: http://www.repository.naturalis.nl/record/319260
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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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An unusual rhinoceros viper, Bitis nasicornis, from Ghana, West Africa Naturalis
Hughes, B..
The characters which serve to distinguish the Gaboon Viper (Bitis gabonica) from the Rhinoceros Viper (B. nasicornis) are examined in relation to a subadult female from Dabocrom, Ghana, which displays characters of both species. It is more like B. nasicornis than B. gabonica but the admixture of B. gabonica characters is probably the result of interbreeding.
Tipo: Article / Letter to the editor Palavras-chave: 42.82.
Ano: 1968 URL: http://www.repository.naturalis.nl/record/319202
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Analysis of a herpetofaunal community from an altered marshy area in Sicily; with special remarks on habitat use (niche breadth and overlap), relative abundance of lizards and snakes, and the correlation between predator abundance and tail loss in lizards Naturalis
Luiselli, L.; Angelici, F.M.; Di Vittorio, M.; Spinnato, A.; Politano, E..
A field survey was conducted in a highly degraded barren environment in Sicily in order to investigate herpetofaunal community composition and structure, habitat use (niche breadth and overlap) and relative abundance of a snake predator and two species of lizard prey. The site was chosen because it has a simple community structure and thus there is potentially less ecological complexity to cloud any patterns observed. We found an unexpectedly high overlap in habitat use between the two closely related lizards that might be explained either by a high competition for space or through predator-mediated co-existence i.e. the prevention of the competitive exclusion of one lizard over the other. We also found a strong positive correlation between predator...
Tipo: Article / Letter to the editor Palavras-chave: Herpetofauna; Sicily; Habitat use; Lizards; 42.82.
Ano: 2005 URL: http://www.repository.naturalis.nl/record/214339
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Annotated checklist of the herpetofauna of Petit Saut, Sinnamary River, French Guiana Naturalis
Hoogmoed, M.S.; Avila-Pires, T.C.S..
The Mission Radeau des Cimes to Petit Saut, French Guiana, offered the opportunity to study the herpetofauna of the canopy of the tropical rainforest, an area hardly studied sofar. Two localities at heights of 30 and 35 m could be studied, whereas data on a third site were obtained through information from other participants. The herpetological results of the research in the canopy were meagre. Only the frog Hyla leucophyllata (Beireis) and the lizard Mabuya bistriata (Spix) were observed in the canopy. Additionally the terrestrial herpetofauna was studied extensively and turned out to contain some species that had not been reported before from French Guiana. Also, for many species new distribution data within French Guiana were obtained. Le Mission Radeau...
Tipo: Article / Letter to the editor Palavras-chave: Reptilia; Amphibia; Tropical rainforest; Canopy; Forest floor; Neotropics; French Guiana; 42.82.
Ano: 1991 URL: http://www.repository.naturalis.nl/record/318446
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Checklist of the living monitor lizards of the world (family Varanidae) Naturalis
Böhme, W..
Tipo: Article / Letter to the editor Palavras-chave: Checklist; Varanus; Recent taxa; Geographical distribution; 42.82.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/220215
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Checklist of the Savanna inhabiting frogs of the El Manteco region with notes on their Ecology and the description of a new species of Treefrog (Hylidae, Anura) Naturalis
Hoogmoed, M.S.; Gorzula, S.J..
Three years of fieldwork in the El Manteco region by the junior author formed the basis for the checklist presented here. Among the frogs assembled is a small species of Ololygon, new to science, also found in Guyana and Surinam. The anuran succession in the temporary lagoons, formed during the rainy season, was studied during three years and a consistent pattern was found. Comparisons with the llanos fauna are made and it is concluded that the El Manteco region contains a relatively large percentage of Amazonian elements, absent from the llanos.
Tipo: Article / Letter to the editor Palavras-chave: 42.82.
Ano: 1979 URL: http://www.repository.naturalis.nl/record/318909
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Comments on the type specimen of Dracaena guianensis Daudin, 1801 (Reptilia: Sauria: Teiidae), and rediscovery of the species in French Guiana Naturalis
Massary, J.-C. de; Hoogmoed, M.S.; Blanc, M..
A discussion on the whereabouts of the holotype of Dracaena guianensis is given, and its rediscovery in the National Museum of Natural History, Leiden, The Netherlands (RMNH) and the Muséum national d’Histoire naturelle, Anatomie Comparée, Paris, France (MNHN-AC) is reported. The RMNH possesses a stuffed specimen, of which the left forelimb has been amputated in life and of which the skull is no longer present in the specimen. The Paris museum possesses a skull that fits the Leiden specimen. Thus, the stuffed specimen and the skull together form the complete holotype, each object can be considered a “schizotype” of the holotype. After one of us observed the species again in French Guiana and documented this with a picture, the correction of the type...
Tipo: Article / Letter to the editor Palavras-chave: Dracaena; Holotype; Rediscovery; Type locality; Range extension; French Guiana; 42.82.
Ano: 2000 URL: http://www.repository.naturalis.nl/record/215740
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Comparative tadpole morphology in three species of frogs of the genus Spinomantis (Amphibia: Mantellidae) Naturalis
Vejarano, S.; Thomas, M.; Vences, M..
We describe the tadpoles of three species of Malagasy frogs, classified in the genus Spinomantis, based on specimens identified by DNA barcoding. The tadpole of Spinomantis aglavei is a typical Orton type IV larva. The oral disc is not emarginated laterally, but has two mid-ventral folds and a labial tooth row formula of 3(2- 3)/2(1). The tadpole of S. phantasticus is similar, the oral disc being laterally emarginated and having one medial fold; LTRF is 3/3(1). A third species, S. cf. fimbriatus is also similar to the other two species; the oral disc is not laterally emarginated but has three medial folds and LTRF is 3(2-3)/3(1). One shared character is a median fold or emargination in the lower part of the oral disc, although the shape of this fold is...
Tipo: Article / Letter to the editor Palavras-chave: Anura; Spinomantis aglavei; Spinomantis phantasticus; Spinomantis fi mbriatus; Madagascar; Systematics; DNA barcoding; 42.82.
Ano: 2006 URL: http://www.repository.naturalis.nl/record/210775
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Contributions to Indo-Australian Herpetology Naturalis
Brongersma, L.D..
A complete account of all the reptiles then known to occur in the Indo-Australian Archipelago was published by De Rooij in 1915 and 1917. Since this time several new species have been described, while others have been suppressed or revived. Also the problem of geographical variation begins to penetrate in herpetology more and more. While studying the herpetological collections of the Rijksmuseum van Natuurlijke Historie, Leiden and the Zoological Museum, Amsterdam, it became clear to me that, though De Rooij's books offer a sound basis for further studies on the reptiles of the Indo-Australian Archipelago, a great deal of revisional work must still be done before our knowledge of the herpetological fauna of that region will be fairly complete. As I can...
Tipo: Article / Letter to the editor Palavras-chave: 42.82.
Ano: 1934 URL: http://www.repository.naturalis.nl/record/318854
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Correlates between morphology, diet and foraging mode in the Ladder Snake Rhinechis scalaris (Schinz, 1822) Naturalis
Pleguezuelos, J.M.; Fernández-Cardenete, J.R.; Honrubia, S.; Feriche, M.; Villafranca, C..
In many vertebrates, foraging mode (active versus sit-and-wait) is tied to some traits of their natural history such as morphology, type of prey, rate of food acquisition, and survival rate. We explore the correlates between some morphological traits of a Mediterranean colubrid and its feeding ecology and the predation risk, by comparing data on teeth number, tail damage, and diet. A large sample (n = 368) of the Ladder Snake, Rhinechis scalaris is used. The species feeds almost exclusively on endotherms, mainly mammals (nearly 95% of the diet in mass), which set R. scalaris among the most stenophagous snakes in the western Palaearctic. There is also a high percentage of motionless prey in the diet (up to 50% in prey mass), such as nestling birds, mammals...
Tipo: Article / Letter to the editor Palavras-chave: Feeding habits; Teeth number; Tail breakage; Spain; 42.82; 42.62.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/256128
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Cryptic variation and recent bipolar range expansion within the Stumped-Toed Gecko Gehyra mutilata across Indian and Pacific Ocean islands Naturalis
Rocha, S.; Ineich, I.; Harris, D. James.
With an impressively wide distribution, Gehyra mutilata is present on almost all Indian and Pacific Ocean islands and in large regions of Southeast Asia and Indonesia. Mitochondrial sequence data (~500 bp) from individuals covering large parts of its (mainly insular) distribution reveals deep cryptic variation and strong geographic structure, with two well differentiated lineages. Molecular data also reveals that the wide Indian and Pacific insular distribution of Gehyra is very recent and, at least across the Indian Ocean islands, most probably the result of human-aided dispersal, as no variation within this lineage was found. Further research is needed to determine geographic patterns of variation across Southeast Asia, the level of genetic variation,...
Tipo: Article / Letter to the editor Palavras-chave: 16s rRNA; Asia; Biogeography; Gehyra insulensis; Gehyra mutilata; Indian Ocean; Introductions; Island colonisations; Oceania; 42.82.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/301369
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Description of a new frog of the genus Hyla from Suriname Naturalis
Goin, C.J..
While in Suriname during June 1964, I had the opportunity of collecting a series of a species of Hyla that seems to be undescribed. It seems appropriate that this species be known as Hyla boesemani sp. nov. (fig. 1) Diagnosis. — A small Hyla with vomerine tooth patches close together or contiguous; with just a trace of web between the fingers; fourth toe webbed to the base of the penultimate phalanx; a small but well-developed patagium; a very distinct skin fold across chest. It has a dorsal pattern of scattered light spots, a distinct, narrow, postocular dark stripe, and lacks a pattern on the thigh although the latter has a small amount of uniformly distributed pigment present. This species is perhaps most easily confused with the members of the Hyla...
Tipo: Article / Letter to the editor Palavras-chave: 42.82.
Ano: 1966 URL: http://www.repository.naturalis.nl/record/318703
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Description of Coloborhynchus spielbergi sp. nov. (Pterodactyloidea) from the Albian (Lower Cretaceous) of Brazil. Naturalis
Veldmeijer, A.J..
A new species of pterosaur, Coloborhynchus spielbergi sp. nov. (Pterodactyloidea), from the Romualdo Member (Albian) of the Santana Formation is described. The type consists of the skull, mandible and many of the post-cranial bones. The specimen displays a high degree of co-ossification indicating that the animal was an adult and likely quite old when it died. The wingspan is reconstructed at nearly 6 m. Among the characteristic features are a large anteriorly positioned premaxillary sagittal crest and a smaller, also anteriorly positioned dentary sagittal crest, a flat anterior aspect of the skull from which two teeth project and a ventrally fused pelvis. Comments on Brazilian pterosaurs are made in connection with the classificiation of the Leiden...
Tipo: Article / Letter to the editor Palavras-chave: Pterosaur; Coloborhynchus; Santana Formation; Lower Cretaceous; Brazil; 42.82; 38.22.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/219236
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Development, comparative morphology and cornification of reptilian claws in relation to claws evolution in tetrapods Naturalis
Alibardi, L..
The development of claws in different reptiles and their cornification are analyzed using histological, ultrastructural and autoradiographic methods. Claws develop at the tip of digits in relation to the growth of the terminal phalanx and appear as modified scales. The apical epidermis of digit becomes thickened and is associated with a mesenchymal condensation or a dense mesenchyme. The dorsal side of the digit becomes the unguis while the ventral side becomes the sub-unguis. The corneous layer in the unguis is thicker than in the sub-unguis and accumulates hard-keratin while corneocytes remain separated or partially fused. Bundles of hard-keratin tend to accumulate in parallel orientation with respect to the surface and are directed toward the claw tip....
Tipo: Article / Letter to the editor Palavras-chave: Autoradiography; Claws; Cornification; Histogenesis; Reptiles; Ultrastructure; 42.82.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/304588
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Die von Dr. F. Kopstein auf den Molukken und einigen benachbarten Inseln gesammelten Froschlurche Naturalis
Mertens, R..
Im Vergleich zu der Reptilien-Ausbeute Kopstein's (1926, S. 71) sind die von ihm auf den Molukken und einigen benachbarten Eilanden während der Jahre 1922/24 zusammengebrachten Amphibien naturgemäss wesentlich artenärmer. Durch mehrere bemerkenswerte Neunachweise und zwei fiir die Wissenschaft neue Formen verdient aber diese kleine Sammlung, die sich aus 10 Arten zusammensetzt, dennoch ein recht erhebliches Interesse. Ich erhielt das Material, das sich im 'sRijks Museum van Natuurlijke Historie in Leiden befindet, von dem Direktor dieses Museum, Herrn Prof. Dr. E. D. van Oort zur Bearbeitung, dem ich dafür auch hier meinen ergebensten Dank zum Ausdruck bringe. Eine ganze Reihe von Exemplaren hat allem Anschein nach schon Herrn Prof. Dr. P. N. van Eampen...
Tipo: Article / Letter to the editor Palavras-chave: 42.82.
Ano: 1930 URL: http://www.repository.naturalis.nl/record/318535
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Diversity, external morphology and ‘reverse taxonomy’ in the specialized tadpoles of Malagasy river bank frogs of the subgenus Ochthomantis (genus Mantidactylus) Naturalis
Randrianiaina, R.-D.; Strauß, A.; Glos, J.; Glaw, F.; Vences, M..
We provide detailed morphological descriptions of the tadpoles of Malagasy river bank frogs of the subgenera Ochthomantis and Maitsomantis (genus Mantidactylus, family Mantellidae), and data on relative abundance and habitat preferences of Ochthomantis species from Ranomafana National Park in southeastern Madagascar. Our study includes the tadpoles of six described and four undescribed candidate species. Eight of these larvae were previously unknown. Tadpoles were identified by DNA barcoding. Due to the very rudimentary taxonomic knowledge on Ochthomantis, we followed a ‘reverse taxonomy’ approach in which adult classification was to a great part determined on the basis of larval differences. By this procedure we even identified one candidate species whose...
Tipo: Article / Letter to the editor Palavras-chave: Amphibia; Mantellidae; Madagascar; Tadpole morphology; DNA barcoding; 42.82.
Ano: 2011 URL: http://www.repository.naturalis.nl/record/369710
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DNA barcoding, phylogeny and systematics of Golden-backed frogs (Hylarana, Ranidae) of the Western Ghats-Sri Lanka biodiversity hotspot, with the description of seven new species Naturalis
Biju, S.D.; Garg, S.; Mahony, S.; Wijayathilaka, N.; Senevirathne, G.; Meegaskumbura, M..
A systematic revision of the genus Hylarana in the Western Ghats-Sri Lanka biodiversity hotspot is presented. Species delineation in Hylarana is complicated due to a lack of distinct colour differences or striking morphological characters, leading to potential misidentification. We conducted extensive surveys throughout the Western Ghats-Sri Lanka biodiversity hotspot and performed multiple gene (16S, COI and Cytb) barcoding using 103 samples collected from cultivated land and natural habitats. Genetic distance comparisons and Neighbor Joining trees indicated the presence of at least 14 candidate species in the region, supported by taxa groupings for all three genetic markers. Utilising a combination of molecular and morphological data, we describe seven...
Tipo: Article / Letter to the editor Palavras-chave: Amphibia; Cryptic species; Endemism; Integrative taxonomy; Lectotypification; Multiple gene barcoding; Neotypification; Taxonomic revision; 42.82; 42.64.
Ano: 2014 URL: http://www.repository.naturalis.nl/record/506456
Registros recuperados: 169
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