Mittwoch, 14 April 2021 10:26

WÜSTER, W. et al. (2018)

Integration of nuclear and mitochondrial gene sequences and morphology reveals unexpected diversity in the forest cobra (Naja melanoleuca) species complex in Central and West Africa (Serpentes: Elapidae)

Zootaxa 4455 (1): 068–098.  http://www.mapress.com/j/zt/. ISSN1175-5334(online edition).

Abstract:

Cobras are among the most widely known venomous snakes, and yet their taxonomy remains incompletely understood, particularly in Africa. Here, we use a combination of mitochondrial and nuclear gene sequences and morphological data to diagnose species limits within the African forest cobra, Naja (Boulengerina) melanoleuca. Mitochondrial DNA sequences reveal deep divergences within this taxon. Congruent patterns of variation in mtDNA, nuclear genes and mor-phology support the recognition of five separate species, confirming the species status of N. subfulva and N. peroescobari, and revealing two previously unnamed West African species, which are described as new: Naja (Boulengerina) guineensis sp. nov. Broadley, Trape, Chirio, Ineich & Wüster, from the Upper Guinea forest of West Africa, and Naja (Boulengerina) savannula sp. nov. Broadley, Trape, Chirio & Wüster, a banded form from the savanna-forest mosaic of the Guinea and Sudanian savannas of West Africa. The discovery of cryptic diversity in this iconic group highlights our limited under-standing of tropical African biodiversity, hindering our ability to conserve it effectively.

wüster-biblio

Freigegeben in W

A Taxonomic Revision of Boas (Serpentes: Boidae).

Zootaxa 3846 (2): 249-260.

Abstract:

Large molecular datasets including many species and loci have greatly improved our knowledge of snake phylogeny, particularly within the group including boas (Table 1). Recent taxonomic revisions using molecular phylogenies have clarified some of the previously contentious nomenclature of the group (Wilcox et al. 2002; Lawson et al. 2004; Burbrink 2005; Noonan & Chippindale 2006), resulting in a robust taxonomy that is mostly concordant with the phylogeny as currently known, which includes ~85% of described, extant species (Pyron et al. 2013; Reynolds et al. 2014). However, a few unresolved issues remain, related primarily to the rules of the International Code of Zoological Nomenclature (the Code hereafter) and the application of Linnaean ranks (International Commission on Zoological Nomenclature et al. 1999).

pyron-biblio

Freigegeben in P

A review of  the systematics of the genus Bradypodion (Sauria: Chamaeleonidae), with the description of two new genera.

Zootaxa 1363: 23–38. ISSN1175-5334 (online edition) 

Abstract:

The taxonomic history and composition of the genus Bradypodion as construed by Klaver & Böhme (1986) and new morphological and molecular data relevant to the taxonomy of the group is reviewed. The combined evidence strongly supports a formal rearrangement of the group into three distinct genera. Bradypodion, type species Chamaeleo pumilus Daudin 1802, is retained for the southern African species. Two new genera are erected to accommodate additional well-diagnosed clades within central and east African species previously referred to Bradypodion. Species of the “fischeri complex” are assigned to Kinyongia gen. nova, whilst the endemic Mulanje chameleon is placed in the monotypic genus Nadzikambia gen. nova.

tilbury-biblio

Freigegeben in T

The two-horned chamaeleons of East Africa.

Zoological Journal of the Linnean Society 152 (2): 367–391, https://doi.org/10.1111/j.1096-3642.2007.00332.x

Abstract:

There have been numerous attempts to resolve the taxonomy of the two-horned chamaeleons of East Africa. However, the high levels of intraspecific variation and reported sympatry of morphologically distinct taxa indicate that their current classification is unsatisfactory. Tissue samples were collected from specimens from most mountain massifs (excluding the Nguu) where two-horned chamaeleons are known to occur and were used to sequence partial 12S and 16S rRNA, as well as ND2 mtDNA genes. These specimens and further museum material were used to review morphological variation and to define discriminating characters for each taxon. Phylogenetic analyses of gene sequences show clear genetic divergence between allopatric populations, although two lineages occur in sympatry in the East Usambara Mountains, and is supported by divergent morphology. In light of these results a formal revision of the taxonomy of all East African two-horned chamaeleons is proposed and seven species are recognized (Kinyongia boehmei, K. fischeri, K. matschiei, K. multituberculata, K. tavetana, K. uluguruensis and K. vosseleri). These taxa form a monophyletic group except for K. uluguruensis, which seems to be more closely related to one-horned species. Most of these taxa have been previously described and subsequently reduced to synonyms. Two other previously described two-horned taxa are not recognized as valid: Chamaeleo tornieri is considered species inquiriendae, and C. fischeri werneri is placed in synonymy with K. multituberculata. A dichotomous key is provided for the identification of these taxa and some aspects of their conservation, ecology and evolutionary origins are also discussed.


mariaux-biblio

Freigegeben in M
Mittwoch, 07 April 2021 08:31

LOISELLE, P. V. (2006)

A review of the Malagasy Pachypanchax (Teleostei: Cyprinodontiformes, Aplocheilidae), with descriptions of four new species.

Zootaxa 1366: 1–44. ISSN 1175-5334 (online edition)

Abstract:

The history of the genus Pachypanchax Myers, 1933 in the literature is reviewed and the utility of
the diagnostic characters proposed by various authors is evaluated. On the basis of five
synapomorphies, four skeletal and one squamational, six of the seven presently known Malagasy
aplocheilids are found to be unambiguously referable to the genus Pachypanchax. The seventh,
Poecilia nuchimaculata Guichenot 1866, known only from the unique type specimen, displays
several peculiar skeletal and squamational features. Pending the acquisition of additional material,
it is tentatively assigned to the genus. Of the six species treated here, Pachypanchax omalonotus
(Duméril, 1861) and P. sakaramyi (Holly, 1828) are redescribed from recently collected topotypical
material; and the following four are described as new: P. varatraza., P. patriciae, P. sparksorum,
and P. arnoulti. Data on life colors, distribution, natural history and conservation status on all six
Malagasy Pachypanchax species are presented.

loiselle-biblio

Freigegeben in L

Validation of Cercopithecus erythrogaster pococki as the name for the Nigerian white-throated guenon.

Mammalia 63 (3): 389-392.

Zusammenfassung:

Die Autoren validieren den Nemen Cercopithecus erythrogaster pococki für die nigerianische Unterart der Rotbauchmeerkatze. Der Name Cercopithecus pococki war von John Guy DOLLMAN im frühen 20. Jahrhundert eingeführt worden, allerdings ohne dass dieser die Form beschrieben hätte. 1927 wurde der Name publiziert, jedoch nicht in einer Form, dass er nach den taxonomischen Regeln "verfügbar" gewesen wäre. Dies wurde von den Autoren 1999 nachgeholt.

grubb-biblio

Freigegeben in G

Biogeography of the marmosets and tamarins (Callitrichidae).

Mol Phylogenet Evol. 2015 Jan; 82 Pt B: 413-25. doi: 10.1016/j.ympev.2014.04.031. Epub 2014 May 20.

Abstract:

The marmosets and tamarins, Family Callitrichidae, are Neotropical primates with over 60 species and subspecies that inhabit much of South America. Although callitrichids exhibit a remarkable widespread distribution, attempts to unravel their biogeographic history have been limited by taxonomic confusion and the lack of an appropriate statistical biogeographic framework. Here, we construct a time-calibrated multi-locus phylogeny from GenBank data and the callitrichid literature for 38 taxa. We use this framework to conduct statistical biogeographic analyses of callitrichids using BioGeoBEARS. The DIVAj model is the best supported reconstruction of biogeographic history among our analyses and suggests that the most recent common ancestor to the callitrichids was widespread across forested regions c. 14 Ma. There is also support for multiple colonizations of the Atlantic forest region from the Amazon basin, first by Leontopithecus c. 11 Ma and later by Callithrix c. 5 Ma. Our results show support for a 9 million year old split between a small-bodied group and large-bodied group of tamarins. These phylogenetic data, in concert with the consistent difference in body size between the two groups and geographical patterns (small-bodied tamarins and large-bodied tamarins have an unusually high degree of geographic overlap for congeners) lend support to our suggestion to split Saguinus into two genera, and we propose the use of distinct generic names; Leontocebus and Saguinus, respectively.

buckner-biblio

Freigegeben in B
Samstag, 20 März 2021 10:48

WEHAUSEN, J. D., RAMEY, R. R. (2000)

Cranial morphometric and evolutionary relationships in the northern range of Ovis canadensis.

J. of Mammalogy, 81(1):145-161 (2000). https://doi.org/10.1644/1545-1542(2000)081<0145:CMAERI>2.0.CO;2

Abstract:

Univariate and multivariate statistical methods were used to examine geographic variation in skull and horn characters of 694 bighorn sheep (Ovis canadensis) specimens from the Great Basin north to British Columbia and Alberta to test previous taxonomic hypotheses. Substantially more morphometric variation in skull and horn size and shape was found west of the Rocky Mountains than within the Rocky Mountains. Our results did not support the recognition of Audubon's bighorn sheep (O. c. auduboni) as a subspecies separate from Rocky Mountain bighorn sheep (O. c. canadensis). California bighorn sheep (O. c. californiana) from Washington and British Columbia were not distinguishable from Rocky Mountain bighorn sheep but differed notably from populations in the Sierra Nevada considered part of that subspecies. Extirpated native populations from northeastern California, Oregon, and southwestern Idaho, also considered to be O. c. californiana, shared with Nelson bighorn sheep (O. c. nelsoni) from the Great Basin desert a horn-related character that distinguished them from Rocky Mountain bighorn sheep. Bighorn sheep from the Sierra Nevada were found to be distinguishable from those of the adjacent Great Basin region. Our morphometric results were concordant in geographic patterns with mtDNA data. We synonymize O. c. auduboni with O. c. canadensis. We also assign extant and extinct native populations of O. c. californiana from British Columbia and Washington to O. c. canadensis. Finally, we assign the extinct native populations of O. c. californiana from Oregon, southwestern Idaho, northern Nevada, and northeastern California to the Great Basin Desert form of O. c. nelsoni, recognizing that some transition to Rocky Mountain bighorn sheep probably occurred along that northern boundary. With these taxonomic revisions, the range of O. c. californiana includes only the central and southern Sierra Nevada.

wehausen-biblio

Freigegeben in W
Mittwoch, 17 März 2021 09:00

GROVES, C.P. (2003)

Taxonomy of ungulates of the Indian subcontinent.

Journal of the Bombay Natural History Society 100 (2/3): 341-362.

Zusammenfassung:

Nach dieser Publikation gibt es auf dem Indischen Subkontinent 46 Huftierarten, von denen Equus hemionus, Rhinoceros sondaicus und Bos javanicus hier vermutlich ausgestorben sind. Dies schließt folgende Taxa ein, die von Unterarten zu vollen Arten erhoben werden: Equus khur, Moschus cupreus, Muntiacus vaginalis, Cervus wallichii, Cervus hanglu und Capricornis thar. Gazella,bennettii salinarum wird als neue Unterart beschrieben und von Tetracerus quadricornis werden drei Unterarten unter bereits bestehenden Namen anerkannt.

groves-biblio

Freigegeben in G
Freitag, 05 Februar 2021 10:24

NAPIER, J. R. & NAPIER, P. H. (1972)

Taxonomy and Nomenclature: Systematic List of Living Primates.

in: T-W-FIENNES, R. N. (1972). Pathology of Simian Primates Part I: General Pathology: XXVII-XLVIII.
Verlag S. Karger • Basel • München • Paris • London • New York • Sydney

Reprinted with amendments from NAPIER, J. R. & NAPIER, P. H. (1967). A Handbook of Living Primates. Academic Press, London.

Die Liste enthält 12 Familien, davon 6 in 15 Untrerfamilien aufgeteilt mit 62 Gattungen und 185 Arten.

napier-biblio

Freigegeben in N
Seite 1 von 21
© Peter Dollinger, Zoo Office Bern hyperworx