Phylogenetic relationships of African caecilians (Amphibia: Gymnophiona): Insights from mitochondrial rRNA gene sequences

Wilkinson, Mark; Loader, Simon P.; Gower, David J.; Sheps, Jonathan A.; Cohen, Bernard L.

doi:10.1080/21564574.2003.9635483

Cited by 69 publications

(51 citation statements)

References 30 publications

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“…As expected from previously published DNA sequence (M. Wilkinson et al, 2003) and morphological evidence (M.H. M.…”

Section: Amphibia (Lissamphibia) and Batrachiasupporting

confidence: 71%

“…Our results differ slightly from those presented by M. Wilkinson et al (2003), which were based on a smaller amount of sequence data (mt rRNA only). Like us, M. Wilkinson et al (2003) found Scolecomorphidae and Typhlonectidae to be imbedded within ''Caeciliidae'', although in a different and less strongly corroborated placement.…”

Section: Amphibia (Lissamphibia) and Batrachiacontrasting

confidence: 56%

“…Like us, M. Wilkinson et al (2003) found Scolecomorphidae and Typhlonectidae to be imbedded within ''Caeciliidae'', although in a different and less strongly corroborated placement. Our placement of Siphonops (South America) as the sister taxon of Hypogeophis (Seychelles) and together the sister taxon of Gegeneophis (India), is the only unanticipated result.…”

Section: Amphibia (Lissamphibia) and Batrachiamentioning

confidence: 98%

“…SCOLECOMORPHIDAE (2 GENERA, 6 SPECIES): The East African Scolecomorphidae was suggested to form the sister taxon of ''Caeciliidae'' ϩ Typhlonectidae (Nussbaum, 1979), but because this suggestion was based on one of the early phylogenetic studies of caecilians, the sampling over which this generalization was made was small. Subsequent studies from mtDNA (M. Wilkinson et al, 2003) and morphology (M.H. ; M. Wilkinson, 1997) suggested that Scolecomorphidae, like Typhlonectidae, is imbedded within ''Caeciliidae''.…”

Section: Amphibiamentioning

confidence: 99%

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Supplemental Material for 'The amphibian tree of life. (Bulletin of the AMNH ; no. 297)'

Frost¹,

Grant²,

Faivovich³

et al. 2006

American Museum of Natural History Research Library

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“…As expected from previously published DNA sequence (M. Wilkinson et al, 2003) and morphological evidence (M.H. M.…”

Section: Amphibia (Lissamphibia) and Batrachiasupporting

confidence: 71%

Section: Amphibia (Lissamphibia) and Batrachiacontrasting

confidence: 56%

Section: Amphibia (Lissamphibia) and Batrachiamentioning

confidence: 98%

Section: Amphibiamentioning

confidence: 99%

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Supplemental Material for 'The amphibian tree of life. (Bulletin of the AMNH ; no. 297)'

Frost¹,

Grant²,

Faivovich³

et al. 2006

American Museum of Natural History Research Library

Self Cite

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“…Although clearly monophyletic (Nussbaum and Ducey 1988;Hedges et al 1993;Gower et al 2011), analyses of (mostly mtDNA) sequence data have been unable to robustly resolve all relationships among the radiation (Hedges et al 1993;Wilkinson et al 2002Wilkinson et al , 2003Loader et al 2007;Gower et al , 2011. ANL could provide a useful tool for Seychelles caecilian systematics and conservation genetics, especially given the increased levels of threat faced, in general, by island biotas (e.g., Frankham 2008).…”

mentioning

confidence: 99%

Development of anonymous nuclear markers from Illumina paired-end data for Seychelles caecilian amphibians (Gymnophiona: Indotyphlidae)

Lewis

Maddock

Day

et al. 2014

Conservation Genet Resour

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Anonymous nuclear markers were developed for Seychelles caecilian amphibians. Using a previously published bioinformatics pipeline (developed for Roche 454 data), 36 candidate anonymous nuclear loci (ANL) of at least 180 bp length were identified from Illumina MiSeq next generation sequencing data for five Seychelles species. We designed primer pairs for the 36 candidate ANL and tested these by PCR and Sanger sequencing. Seven ANL amplified and sequenced well for at least five of the six nominal Seychelles caecilian species (in three genera), and represent potentially useful markers for systematics and conservation.

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Morphology of the kidney in the West African caecilian, Geotrypetes seraphini (Amphibia, Gymnophiona, Caeciliidae)

Møbjerg

Jespersen

Wilkinson

2004

Journal of Morphology

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This study deals with the morphology and ultrastructure of the mesonephros in adult caecilians of the species Geotrypetes seraphini. Based on serial sections in paraffin and araldite, nephrons are reconstructed and the cellular characteristics of different nephron segments described. The long and slender mesonephric kidneys of G. seraphini are broadest caudally and taper toward the front, where the organs are divided into smaller segmental divisions. Two nephron types can be distinguished on the basis of their connections to the coelom and their position within the nephric tissue: ventral nephrons connect to the coelom via a ciliated peritoneal funnel, whereas medial nephrons lack this connection. Both nephron types are composed of a filtration unit, the Malpighian corpuscle, and a renal tubule, which can be divided into six morphologically distinct segments: neck segment, proximal tubule, intermediate segment, early distal tubule, late distal tubule, and collecting tubule. Collecting tubules merge and form a branch system that opens into collecting ducts. Collecting ducts empty into the Wolffian duct. Proximal tubules of nephrons in the frontal divisions are morphologically different from the proximal tubules of more caudal kidney regions. Distal tubule subdivision is only clearly recognizable at the electron microscopic level. The length of each nephron segment is calculated from a ventral nephron with a total length of approximately 3.8 mm, and the course of the segments within the nephric tissue is reported. The number of nephrons was estimated at 1,700 units in each kidney. The segmentation and ultrastructure of the mesonephric nephrons in G. seraphini are discussed in relation to nephron descriptions from other caecilians and we further discuss the evolutionary origin of the amphibian nephron.

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Phylogenetic relationships of African caecilians (Amphibia: Gymnophiona): Insights from mitochondrial rRNA gene sequences

Cited by 69 publications

References 30 publications

Supplemental Material for 'The amphibian tree of life. (Bulletin of the AMNH ; no. 297)'

Supplemental Material for 'The amphibian tree of life. (Bulletin of the AMNH ; no. 297)'

Development of anonymous nuclear markers from Illumina paired-end data for Seychelles caecilian amphibians (Gymnophiona: Indotyphlidae)

Morphology of the kidney in the West African caecilian, Geotrypetes seraphini (Amphibia, Gymnophiona, Caeciliidae)

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