Author:
Chen I-Shiung,Miller Peter J.,Wu Han Ling,Fang Lee-Shing
Abstract
Collections of the West-Pacific freshwater gobiid genus,
Rhinogobius Gill, 1859, from Hainan Island, southern
China, were examined morphologically and their taxonomic status revised
according to meristic criteria and colouration. As well as a confirmation of
the presence of R. leavelli, a further four species with
a non-diadromous life history are here described as new to science under the
following names: Rhinogobius changjiangensis n. sp.,
R. linshuiensis n. sp.,
R. nandujiangensis n. sp., and
R. wangchuangensis n. sp., inhabiting different river
basins on the island. To compare taxonomic status and evolutionary history of
these species with Chinese freshwater species of
Rhinogobius, the complete mitochondrial control region
was amplified and sequenced for three of the new species, a non-diadromous
species from southern China (R. duospilus), and two
amphidromous species, R. leavelli from southern China
(including Hainan) and R. maculafasciatus from Taiwan.
The resulting molecular data indicate a high level of genetic divergence
between these putative morphological species, and the phylogenetic
reconstructions from both distance and discrete methods suggest that the
endemic non-diadromous species of Hainan evolved from a common non-diadromous
ancestor, probably during more than one period of marine regression.
Subject
Ecology,Aquatic Science,Ecology, Evolution, Behavior and Systematics,Oceanography
Cited by
24 articles.
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