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Title: The phylogenetic position of Lepidopygopsis typus (Teleostei: Cyprinidae), a monotypic freshwater fish endemic to the Western Ghats of India
Authors: Dahanukar, Neelesh
Philip, Siby
Krishnakumar, K.
Ali, Anvar
Raghavan, Rajeev
Issue Date: 2013
Source: ZOOTAXA, 3700 (1), p. 113-139
Abstract: Lepidopygopsis, known as the peninsular-Indian hill trout, is a monotypic genus endemic to the Periyar stream-reservoir system, in the Western Ghats. Due to the morphological similarity of its only species, L. typus, with the Himalayan schizothoracine fishes, it was considered to be a relict species and a classic example of disjunct distribution. Using mitochondrial and nuclear gene sequence datasets, we show that L. typus is not allied to the schizothoracine fishes. Phylogenetic hypothesis-testing unequivocally supports a scenario in which L. typus and a clade comprising various genera of Asian and African barbins such as Tor, Gonoproktopterus, Kosswigobarbus and Varicorhinus are sister groups. Based on our results, we suggest that the sheath of tile-like scales covering the anal-fin base of schizothoracine fishes and Lepidopygopsis typus could be a symplesiomorphy or a homoplasy.
Notes: [Dahanukar, Neelesh] IISER, Pune 411021, Maharashtra, India. [Dahanukar, Neelesh; Raghavan, Rajeev] ZOO, Coimbatore 641035, Tamil Nadu, India. [Philip, Siby; Krishnakumar, K.; Ali, Anvar; Raghavan, Rajeev] St Alberts Coll, CRG, Kochi 682018, Kerala, India. [Philip, Siby] Ctr Interdisciplinar Invest Marinha & Ambiental, CIMAR CIIMAR, Oporto, Portugal. [Raghavan, Rajeev] Univ Hasselt, Ctr Environm Sci, Res Grp Zool Biodivers & Toxicol, B-3590 Diepenbeek, Belgium.
Keywords: biogeography; convergence; disjunct distribution; Schizothoracinae; Western Ghats;Zoology
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ISSN: 1175-5326
e-ISSN: 1175-5334
DOI: 10.11646/zootaxa.3700.1.4
ISI #: 000323103800004
Category: A1
Type: Journal Contribution
Validations: ecoom 2014
Appears in Collections:Research publications

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