The identity of the Sri Lankan Amblypharyngodon (Teleostei, Cyprinidae)

By

Sudasinghe, Hiranya
Pett, Rohan
Maduwage, Kalana
Meegaskumbura, Madhava

Type

Article

Date of Publication

2019

Original Publication

ZooKeys

Volume

820

Pages

25--49

Subjects

Amblypharyngodon grandisquamis

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.820.29632

 

Abstract

Morphological and molecular analyses of specimens representative of the geographic range of the cyprinid genusAmblypharyngodonin Sri Lanka suggest the presence of only a single species in the island, for which the nameAmblypharyngodongrandisquamisJordan & Starks, 1917, is available.Amblypharyngodongrandisquamisis a species endemic to Sri Lanka, distributed across the lowlands of both of the island’s main climatic zones. It is distinguished from all other species ofAmblypharyngodon, including the three species recorded from peninsular India (A.mola,A.microlepis, andA.melettinus), by a suite of characters that includes a body depth of 26.9–31.2% of the standard length (SL), 42–56 scales in the lateral series (of which usually 8–16 are pored), 20–24 circumpeduncular scales, 14–17 scale rows between the origins of the dorsal and pelvic fins, a dorsal-fin height of 21.1–27.6% SL, 18–19 caudal vertebrae and an eye diameter of 22.7–30.5% of the head length.Amblypharyngodongrandisquamisdiffers fromA.melettinusandA.molaby uncorrected pairwise genetic distances of more than 9% and 6%, respectively, for the mitochondrial cytochrome oxidase subunit 1 (COI) gene.