Mapping of quantitative trait loci underlying a magic trait in ongoing ecological speciation.

ABSTRACT:

Background

Telmatochromis temporalis is a cichlid fish endemic to Lake Tanganyika. The normal and dwarf morphs of this fish are a clear example of ongoing ecological speciation, and body size plays an important role in this speciation event as a magic trait. However, the genetic basis underlying this trait has not been studied.

Results

Based on double-digested restriction-site associated DNA (ddRAD) sequencing of a hybrid cross between the morphs that includes F0 male, F0 female, and 206 F2 individuals, we obtained a linkage map consisting of 708 ddRAD markers in 22 linkage groups, which corresponded to the previously reported Oreochromis niloticus chromosomes, and identified one significant and five suggestive quantitative trait loci (QTL) for body size. From the body-size

SUBMITTER: Takahashi T 

PROVIDER: S-EPMC8361645 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature