Endemic freshwater finfish of Asia : distribution and conservation status

De Silva, Sena S., Abery, Nigel W. and Nguyen, Thuy T. T. 2007, Endemic freshwater finfish of Asia : distribution and conservation status, Diversity and distribution, vol. 13, no. 2, pp. 172-184, doi: 10.1111/j.1472-4642.2006.00311.x.

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Title Endemic freshwater finfish of Asia : distribution and conservation status
Author(s) De Silva, Sena S.ORCID iD for De Silva, Sena S. orcid.org/0000-0001-9381-2136
Abery, Nigel W.
Nguyen, Thuy T. T.
Journal name Diversity and distribution
Volume number 13
Issue number 2
Start page 172
End page 184
Publisher Wiley - Blackwell Publishing
Place of publication Oxford, England
Publication date 2007-03
ISSN 1366-9516
Keyword(s) Asia
native species richness
endemic species
river basins
conservation status
Summary Freshwater finfish species richness and level of endemism in East, and South and South-East Asia that included 17 nations were studied using available databases, and included nation-wise distribution, habitat types, and conservation status. The number of endemic finfish species in the region was 559, belonging to 47 families. Families Cyprinidae and Balitoridae accounted for 43.5% and 16.2% of the total number of endemic species in the region, respectively, followed by Sisoridae (25), Gobiidae (20), Melanotaeniidae (19), and Bagridae (16), and the other 41 families had at least one endemic species. Nation-wise the most number of endemic freshwater finfish species occur in India (191), followed by China (88), Indonesia (84), and Myanmar (60). In India, the endemic species accounted for 26.4% of the native freshwater fish fauna, followed by South Korea (16.9%), the Philippines, (16.3%) and Myanmar (15.7%).

Statistically significant relationships discerned between the number of indigenous and endemic species richness to land area (Xla in 103 km2) of the nations in the region were, Yin = 218.961 Ln(Xla) – 843.1 (R2 = 0.735; P < 0.001) and Ye = 28.445 Ln Xla−134.47 (R2 = 0.534; P < 0.01), respectively, and between indigenous and endemic species richness was Ye = 0.079Xn− 1.558 (R2 = 0.235; P < 0.05).

The overall conservation status of endemic finfish in Asia was satisfactory in that only 92 species were in some state of vulnerability, of which 37 species (6.6%) are endangered or critically endangered. However, the bulk of these species (83.7%) were cave- and or lake-dwelling fish. However, nation-wise, the endemic freshwater finfish fauna of the Philippines and Sri Lanka, based on the imperilment index, were found to be in a highly vulnerable state. Among river basins, the Mekong Basin had the highest number of endemic species (31.3%). The discrepancies between databases are highlighted and the need to consolidate information among databases is discussed. It is suggested that the Mekong Basin be considered as a biodiversity hotspot, and appropriate management strategies be introduced in this regard.
Language eng
DOI 10.1111/j.1472-4642.2006.00311.x
Field of Research 070402 Aquatic Ecosystem Studies and Stock Assessment
Socio Economic Objective 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
HERDC collection year 2008
Copyright notice ©2007, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30021364

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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Created: Mon, 14 Dec 2009, 20:30:13 EST by Thuy Nguyen

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