| intra- and interspecific social challenges modulate the levels of an androgen precursor in a seasonally territorial tropical damselfish. | studies on different vertebrate groups have provided evidence that androgen levels in males increase after competitive social interactions during the breeding season, as postulated by the challenge hypothesis. however, social modulation of androgen levels may vary with latitude and may differ between species holding seasonal versus year-round territories. here, we tested the challenge hypothesis on a seasonal tropical damselfish, abudefduf sexfasciatus, where males temporarily defend territory a ... | 2015 | 25917864 |
| phylogeography of the sergeants abudefduf sexfasciatus and a. vaigiensis reveals complex introgression patterns between two widespread and sympatric indo-west pacific reef fishes. | on evolutionary timescales, sea level oscillations lead to recurrent spatio-temporal variation in species distribution and population connectivity. in this situation, applying classical concepts of biogeography is challenging yet necessary to understand the mechanisms underlying biodiversity in highly diverse marine ecosystems such as coral reefs. we aimed at studying the outcomes of such complex biogeographic dynamics on reproductive isolation by sampling populations across a wide spatial range ... | 2017 | 28160340 |