Title

Genetic structure and connectivity among lake populations of threatened Paratherina sailfin silversides from Sulawesi, Indonesia

Document Type

Article

Publication Date

2011

Publication Title

Conservation Genetics

Volume

12

Issue

5

First Page

1387

Last Page

1393

DOI

10.1007/s10592-011-0238-5

Keywords

antoniae; Conservation; Cryptic genetic structure; Flow; Malili Lakes; microsatellites; Paratherina; river; Scale; Telmatherinidae; water fish telmatherina

Abstract

Spatially restricted endemic species are of special conservation concern as their narrow distributions render them particularly vulnerable to extinction through habitat loss. However, estimates of connectivity among populations can provide a basis for targeted conservation action. Here we quantify population genetic structure and connectivity for two endemic Sailfin silverside species within and among two lakes from the Malili Lakes, Indonesia. For both species, a greater proportion of genetic variance was found among sites within a lake than between lakes, indicative of riverine gene flow and cryptic genetic structure within the lakes. Bayesian genotype clustering revealed substantial population genetic structure within and among lakes, but also showed evidence of dispersal between lakes. These results are timely given the growing anthropogenic stressors in the Malili Lakes watershed, including mining and forestry operations.

Comments

This is an accepted manuscript version of an aritcle whose version of record was published in:Conservation Genetics: http://dx.doi.org/10.1007/s10592-011-0238-5