Genetic evidence for polygynandry in the black-striped pipefish Syngnathus abaster: a microsatellite-based parentage analysis. | - CCMAR -

Journal Article

TítuloGenetic evidence for polygynandry in the black-striped pipefish Syngnathus abaster: a microsatellite-based parentage analysis.
Publication TypeJournal Article
AuthorsHübner, K, Gonzalez-Wangüemert, M, Diekmann, OE, Serrão, EA
Year of Publication2013
JournalJ Hered
Volume104
Questão6
Date Published2013 Nov-Dec
Pagination791-7
ISSN1465-7333
Palavras-chaveAnimals, Female, Genetic Variation, Male, Microsatellite Repeats, Portugal, Reproduction, Sexual Behavior, Animal, Smegmamorpha
Abstract

Sexual selection theory predicts that, in organisms with reversed sex roles, more polyandrous species exhibit higher levels of sexual dimorphism. In the family Syngnathidae (pipefish, seahorses, and seadragons), males provide all parental care by carrying developing embryos on their ventral surfaces, and females develop secondary sex characters. Syngnathids exhibit a variety of genetic mating patterns, making them an ideal group to test predictions of sexual selection theory. Here, we describe the mating system of the black-striped pipefish Syngnathus abaster, using 4 highly variable microsatellites to analyze parentage of 102 embryos. Results revealed that 1) both sexes mate multiple times over the course of a pregnancy (polygynandrous mating system), 2) eggs are spatially segregated by maternity within each brood pouch, and 3) larger females have higher mating success (Kolmogorov-Smirnov test; P < 0.05). Together with similar studies of other syngnathid species, our results support the hypothesis that the mating system is related to the intensity of sexual dimorphism.

DOI10.1093/jhered/est049
Sapientia

http://www.ncbi.nlm.nih.gov/pubmed/23975836?dopt=Abstract

Alternate JournalJ. Hered.
PubMed ID23975836
CCMAR Authors