An examination of introgression and incomplete lineage sorting among three closely related species of chocolate-dipped damselfish (genus: Chromis).

ABSTRACT:

Aim

To determine the impact of ecological and environmental histories on the evolution of coral reef damselfishes at two adjacent marine biogeographic suture zones.

Location

Indo-West Pacific, notably including two suture zones: Socotra and Christmas and Cocos/Keeling Islands.

Taxon

Chromis dimidiata, Chromis margaritifer, and Chromis fieldi.

Methods

We utilized a combination of nuclear and mitochondrial genetic markers in addition to visual abundance survey data of these fishes.

Results

Despite genetic patterns consistent with incomplete lineage sorting and relatively low genetic differentiation among the three studied Chromis species, there is evidence of hybridization between C. margaritifer and C. fieldi at C

SUBMITTER: He S 

PROVIDER: S-EPMC6509375 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature