Dawkinsia, new genus
By ROHAN PETHIYAGODA, MADHAVA MEEGASKUMBURA AND KALANA MADUWAGE - -
Added: Fri, 13 Jul 2012 23:40:48 UTC
Etymology. The genus is named for Richard Dawkins, for his contribution to the public understanding of science and, in particular, of evolutionary science
A synopsis of the South Asian fishes referred to Puntius
The tropical Asian cyprinid genus Puntius, which contains some 120 valid species, has long been suspected to be polyphyletic. Here, through an examination of external morphology, osteology, and analysis of 16S ribosomal RNA and cytochrome b gene fragments from 31 South Asian species hitherto referred to Puntius, we show that these fishes represent at least five lineages recognisable as genera. Puntius sensu stricto has the rostral barbels absent; last unbranched dorsal-fin ray weak or strong, smooth; and lateral line complete, with 22-28 pored scales. Systomus possesses maxillary and rostral barbels; last unbranched dorsal-fin ray stiff (‘osseous’), serrated; and lateral line complete, with 27-34 scales. Three new genera are proposed: Dawkinsia (type species Leuciscus fila mentosus) is distinguished by lacking rostral barbels; having the last unbranched dorsal-fin ray smooth; lateral line complete, with 18-22 scales; and a juvenile colour pattern that includes three black bars on the body. Dravidia (type species Cirrhinus fasciatus) is distinguished by having both rostral and maxillary barbels present; lateral line complete, with 18–26 pored scales; dorsal fin with 4 unbranched and 8 branched rays, last unbranched dorsal-fin ray smooth; infraorbital 3 deep, partly overlapping the preoperculum; and free uroneural and postepiphysial fontanelle absent. Pethia (type species Barbus nigrofasciatus) is distinguished by having the last unbranched dorsal-fin ray stiff, serrated; infraorbital 3 deep, partially overlapping preoperculum; rostral barbels absent; maxillary barbels absent or minute; a black blotch on the caudal peduncle; and frequently, black blotches, spots or bars on the side of the body. The identities of Puntius sophore and Systomus immaculatus are clarified through the designation of neotypes; a lectotype is designated for Neolissochilus bovanicus; and precedence is given to the spelling bovanicus over bovianicus.
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NSS Conference: Challenging Religious Privilege in Public Life Saturday 22 September 2012, 10am to 5pm, London - Keynote speaker Richard Dawkins
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Press Release - New Executive Director Appointed
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Join us for the third annual Portland Humanist Film Festival, which will present feature, documentary, narrative and animated films that give expression to the humanist approach to life, based on reason, science, and ethics. A precise film and speaker schedule will be announced in the coming months.
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Richard is on BBC Radio World Service this evening 16th July, around 21.20 British Summer Time (= 20.20 GMT