Natal philopatry increases relatedness within groups of coral reef cardinalfish: Natal philopatry increases relatedness

Rueger, Theresa, Harrison, Hugo B., Buston, Peter M., Gardiner, Naomi M., Berumen, Michael L., and Jones, Geoffrey P. (2020) Natal philopatry increases relatedness within groups of coral reef cardinalfish: Natal philopatry increases relatedness. Proceedings of the Royal Society of London Series B, Biological Sciences, 287 (1930). 20201133.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: https://doi.org/10.1098/rspb.2020.1133
3


Abstract

A central issue in evolutionary ecology is how patterns of dispersal influence patterns of relatedness in populations. In terrestrial organisms, limited dispersal of offspring leads to groups of related individuals. By contrast, for most marine organisms, larval dispersal in open waters is thought to minimize kin associations within populations. However, recent molecular evidence and theoretical approaches have shown that limited dispersal, sibling cohesion and/or differential reproductive success can lead to kin association and elevated relatedness. Here, we tested the hypothesis that limited dispersal explains small-scale patterns of relatedness in the pajama cardinalfish Sphaeramia nematoptera. We used 19 microsatellite markers to assess parentage of 233 juveniles and pairwise relatedness among 527 individuals from 41 groups in Kimbe Bay, Papua New Guinea. Our findings support three predictions of the limited dispersal hypothesis: (i) elevated relatedness within groups, compared with among groups and elevated relatedness within reefs compared with among reefs; (ii) a weak negative correlation of relatedness with distance; (iii) more juveniles than would be expected by chance in the same group and the same reef as their parents. We provide the first example for natal philopatry at the group level causing small-scale patterns of genetic relatedness in a marine fish.

Item ID: 66781
Item Type: Article (Research - C1)
ISSN: 1471-2954
Keywords: cardinalfish, genetic relatedness, kin cohesion, limited dispersal, natal philopatry, reproductive sweepstakes
Copyright Information: © 2020 The Author(s). Published by the Royal Society. All rights reserved.
Funders: Australian Research Council (ARC)
Projects and Grants: ARC DE160101141
Date Deposited: 20 Apr 2021 01:35
FoR Codes: 31 BIOLOGICAL SCIENCES > 3103 Ecology > 310305 Marine and estuarine ecology (incl. marine ichthyology) @ 100%
SEO Codes: 18 ENVIRONMENTAL MANAGEMENT > 1805 Marine systems and management > 180504 Marine biodiversity @ 100%
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page