The tadpoles of nine Cameroonian Leptodactylodon species (Amphibia, Anura, Arthroleptidae)

Mapouyat, Lissa; Hirschfeld, Mareike; Rödel, Mark‐Oliver; Liedtke, H. Christoph; Loader, Simon P.; Gonwouo, Legrand Nono; Dahmen, Matthias; Doherty‐Bone, Thomas M.; Barej, Michael F.

doi:10.11646/zootaxa.3765.1.2

Cited by 7 publications

(8 citation statements)

References 21 publications

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“…They hide in muddy burrows and piles of dead leaves and branches along the streams [(personal observation; [ 72 ]). Their tadpoles dwell mostly beneath stones and in the leaf litter of slower-moving streams [ 73 ]. The microhabitats of both life-cycle stages thus meet the environmental requirements of Bd .…”

Section: Discussionmentioning

confidence: 99%

Dramatic Declines of Montane Frogs in a Central African Biodiversity Hotspot

et al. 2016

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Amphibian populations are vanishing worldwide. Declines and extinctions of many populations have been attributed to chytridiomycosis, a disease induced by the pathogenic fungus Batrachochytrium dendrobatidis (Bd). In Africa, however, changes in amphibian assemblages were typically attributed to habitat change. We conducted a retrospective study utilizing field surveys from 2004–2012 of the anuran faunas on two mountains in western Cameroon, a hotspot of African amphibian diversity. The number of species detected was negatively influenced by year, habitat degradation, and elevation, and we detected a decline of certain species. Because another study in this region revealed an emergence of Bd in 2008, we screened additional recent field-collected samples and also pre-decline preserved museum specimens for the presence of Bd supporting emergence before 2008. When comparing the years before and after Bd detection, we found significantly diminished frog species richness and abundance on both mountains after Bd emergence. Our analyses suggest that this may be the first disease-driven community-level decline in anuran biodiversity in Central Africa. The disappearance of several species known to tolerate habitat degradation, and a trend of stronger declines at higher elevations, are consistent with Bd-induced declines in other regions. Not all species decreased; populations of some species remained constant, and others increased after the emergence of Bd. This variation might be explained by species-specific differences in infection probability. Increased habitat protection and Bd-mitigation strategies are needed for sustaining diverse amphibian communities such as those on Mt. Manengouba, which contains nearly half of Cameroon’s frog diversity.

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Section: Discussionmentioning

confidence: 99%

Dramatic Declines of Montane Frogs in a Central African Biodiversity Hotspot

et al. 2016

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“…Other than in Duellmanohyla, an umbelliform oral disc is known to occur, in different positions (ventral, subterminal, terminal, and dorsal) and showing remarkable differences in morphology (Grosjean et al, 2011), in the genera Leptodactylodon Andersson, 1903 (Arthroleptidae, Astylosterninae;Amiet, 1970;Mapouyat et al, 2014), Silverstoneia Grant et al, 2006 (Dendrobatidae;Grant and Myers, 2013), Phasmahyla Cruz, 1991 (Hylidae, Phyllomedusinae;Lutz and Lutz, 1939;Cruz, 1991), in the subgenus Chonomantis of Mantidactylus Boulenger, 1895 (Mantellidae;Blommers-Schlösser, 1979;Grosjean et al, 2011), in Megophrys Kuhl and Van Hasselt, 1822 (Megophryidae;M. Smith, 1926;Delorme et al, 2006), and in some species of Microhyla Tschudi, 1838 (Microhylidae;M.…”

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On the Monophyly and Relationships of Several Genera of Hylini (Anura: Hylidae: Hylinae), with Comments on Recent Taxonomic Changes in Hylids

Faivovich

Pereyra

Luna

et al. 2018

South American Journal of Herpetology

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We present a molecular phylogenetic analysis of the hylid tribe Hylini, with the goals of testing the monophyly of the genera Duellmanohyla, Isthmohyla, and Ptychohyla and providing a discussion on the monophyly of Bromeliohyla, Charadrahyla, Ecnomiohyla, Exerodonta, Megastomatohyla, and Sarcohyla. Our results indicate the paraphyly of Ptychohyla, with Bromeliohyla and Duellmanohyla nested within it, and, as in previous analyses, the paraphyly of Duellmanohyla (due to Ptychohyla legleri and P. salvadorensis being nested within it). To resolve this situation, we restrict the contents of Ptychohyla, redelimit those of Duellmanohyla and Bromeliohyla, and erect two new genera, one to include the former Ptychohyla panchoi and P. spinipollex, and the other for the former Ptychohyla acrochorda, P. sanctaecrucis, P. zoque, and tentatively, P. erythromma. Exerodonta as currently defined is not monophyletic, inasmuch as Exerodonta juanitae is nested within Charadrahyla. Consequently, we transfer this species and, tentatively, E. pinorum to Charadrahyla. Also, we discuss some possible taxonomic problems within Exerodonta. Our results indicate that Isthmohyla is polyphyletic, the bromeliad-dwelling Isthmohyla melacaena being the sister taxon of our only exemplar of Bromeliohyla, B. bromeliacia. For this reason, we transfer I. melacaena to Bromeliohyla, rendering Isthmohyla monophyletic. The former Isthmohyla pictipes Group is shown to be paraphyletic due to having the non-monophyletic I. pseudopuma Group within it. Accordingly, we recognize a redelimited I. pseudopuma Group (contents: I. infucata and I. pseudopuma), an I. zeteki Group (contents: I. picadoi and I. zeteki), and a newly defined I. tica Group (contents: I. angustilineata, I. calypsa, I. debilis, I. graceae, I. lancasteri, I. pictipes, I. tica, I. rivularis, and, tentatively, I. insolita and I. xanthosticta). The three groups of Isthmohyla are supported by molecular evidence with jackknife support values > 90%, and two of them by putative morphological synapomorphies. We discuss the recognition of Dryophytes, Hyliola, Rheohyla, and Sarcohyla and whether it is useful to recognize Anotheca, Diaglena, and Triprion as three distinct, monotypic genera. Finally, we discuss a recent taxonomic proposal involving changes in rank and from ranked to unranked names in hylids that overall we consider to have been poorly justified and only superficially discussed.

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“…Despite these similarities, the genera show obvious differences, especially in the mouthparts. Tadpoles of Leptodactylodon are very slender and have a funnel mouth with reduced keratodonts (Mapouyat et al 2014). The huge sucker mouth of Trichobatrachus, with narrow jaws but numerous rows of keratodonts, reflects their life history of rasping food from stones in strong currents (Mertens 1938).…”

Section: Discussionmentioning

confidence: 99%

“…For comparisons we examined further adult frogs and corresponding sequences from the collections of Natural History Museum of Geneva (MHNG; Geneva, Switzerland) and the Zoological Research Museum A. Koenig (ZFMK; Bonn, Germany). Tadpoles were assigned to species by DNA-barcoding, using up to 558 bp of the mitochondrial 16S rRNA gene; for exact laboratory procedures see Mapouyat et al (2014) and Barej et al (2015). All sequences of tadpoles and adults have been produced for this study and deposited at GenBank (for accession numbers see tadpole descriptions).…”

Section: Collection Preservation Deposition and Barcodesmentioning

confidence: 99%

Tadpoles of three western African frog genera: Astylosternus Werner, 1898, Nyctibates Boulenger, 1904, and Scotobleps Boulenger, 1900 (Amphibia, Anura, Arthroleptidae)

Griesbaum¹,

Hirschfeld²,

Barej³

et al. 2019

ZSE

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Herein, we describe the tadpoles of six Astylosternus species, A. fallax, A. cf. fallax, A. laurenti, A. montanus, A. perreti, A. ranoides, and Scotobleps gabonicus, and redescribe the tadpoles of A. batesi, A. diadematus, A. laticephalus, A. occidentalis, A. rheophilus, and Nyctibates corrugatus. All Astylosternus tadpoles are adapted to torrent currents and share a long, oval body, slightly flattened in lateral view, with very long muscular tails with narrow fins. The jaws are massive, serrated, and often show a tooth-like medial projection (fang) in the upper jaw. Body proportions of Astylosternus tadpoles are extremely similar. The best characters to distinguish species might be life coloration and potentially the shape of labial papillae. The tadpole of Scotobleps gabonicus is similar to Astylosternus and differs only slightly by a narrower body with a shorter and rounder head. The upper jaw of Scotobleps carries two or three lateral fangs instead of one medial one. The tadpole of Nyctibates corrugatus is easily distinguishable from the other two genera on the basis of their very long, eel-shaped body and tail and the bluish-black color.

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The tadpoles of nine Cameroonian Leptodactylodon species (Amphibia, Anura, Arthroleptidae)

Cited by 7 publications

References 21 publications

Dramatic Declines of Montane Frogs in a Central African Biodiversity Hotspot

Dramatic Declines of Montane Frogs in a Central African Biodiversity Hotspot

On the Monophyly and Relationships of Several Genera of Hylini (Anura: Hylidae: Hylinae), with Comments on Recent Taxonomic Changes in Hylids

Tadpoles of three western African frog genera: Astylosternus Werner, 1898, Nyctibates Boulenger, 1904, and Scotobleps Boulenger, 1900 (Amphibia, Anura, Arthroleptidae)

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