Showing papers on "Mantella published in 2002"
TL;DR: Analysis of colour patterns and tentative reconstruction of ancestral states yielded five character states shared by Mantella madagascariensis and M .
47 citations
TL;DR: A phylogenetic analysis of 54 mainly osteological and morphological characters in 33 endemic Malagasy anurans resulted in a position of Laurentomantis close to species of the subgenera Spinomantis and Gephyromantis, supporting the need of generic partitioning of the latter.
Abstract: A revision of species included in the subgenus Laurentomantis (genus Mantidactylus) yielded new information about phylogeny, taxonomy, and biogeography of the endemic mantellid frog radiation in Madagascar. Four Laurentomantis species, distinguished by morphology and advertisement calls, are recognized: Mantidactylus (Laurentomantis) horridus (Northern and North- Western biogeographic regions), M. (L.) ventrimaculatus (South- East and East); M. (L.) malagasius (East); and the new species M. (L.) striatus (North-East). M. striatus and M. malagasius are probably sister species based on bioacoustic and morphological affinities. A tibial gland, so far unknown in anurans, is described in M. malagasius and M. horridus. A phylogenetic analysis of 54 mainly osteological and morphological characters in 33 endemic Malagasy anurans resulted in a position of Laurentomantis close to species of the subgenera Spinomantis and Gephyromantis (genus Mantidactylus), in accordance with its subgeneric status. However, also the well-established genus Mantella resulted to be nested within Mantidactylus, supporting the need of generic partitioning of the latter.
17 citations
TL;DR: A new frog species of the genus Mantidactylus is described from the lowland areas of northwestern Madagascar known as the Sambirano Region and is thereby the smallest species in the family Mantellidae.
Abstract: A new frog species of the genus Mantidactylus is described from the lowland areas of northwestern Madagascar known as the Sambirano Region. Mantidactylus madinika reaches 11–13 mm snout–vent length in males and 15–16 mm in females and is thereby the smallest species in the family Mantellidae. It is included in the subgenus Blommersia based on external morphology but differs from other species of the subgenus by its relative finger length. Several features of the new species (only slightly bifid tongue, absence of vomerine teeth, reduction of maxillary teeth, absence of dark pigment on oocytes) are similar to the states observed in the genus Mantella, which is known to be phylogenetically nested within the paraphyletic Mantidactylus. Miniaturization in the ancestor of Mantella may explain several of the derived character states in this genus.
8 citations