Mate choice in the amphipod Eogammarus oclairi Bousfield: The role of current velocity, random assortment, habitat heterogeneity and male's behavior

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dc.contributor.authorIribarne, O
dc.contributor.authorFernandez, M
dc.contributor.authorArmstrong, D
dc.date.accessioned2025-01-21T01:34:13Z
dc.date.available2025-01-21T01:34:13Z
dc.date.issued1996
dc.description.abstractField studies on the mating system of the amphipod Eogammarus oclairi Bousfield in the intertidal shell habitat of Grays Harbor estuary (WA, USA) showed weight assortative mating. There was no spatial difference in the size distribution of individuals, and assortativeness was not affected by habitat complexity. Laboratory experiments showed that males tended to select larger females, and that larger males may either outcompete or take over the females of smaller males. Interaction between a lone, searching male and an amplexing couple was influenced by proximity of the female's moll, the size of the female and size of the intruder male compared to the amplexing male. Males increased the tenacity of their hold on a female during interactions with intruder males as pending female molt grew closer. Among environmental variables, flow velocity up to 30 cm.s(-1) in an artificial flume did not affect males' ability to pair and carry a female. Males were able to remain in amplexus for 24 h with females larger than themselves at this velocity. All evidence suggests that assortative mating is mostly driven by male-male competition and that sexual selection favors large males.
dc.fuente.origenWOS
dc.identifier.eissn1029-0362
dc.identifier.issn1023-6244
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97531
dc.identifier.wosidWOS:A1996UZ10400001
dc.issue.numero4
dc.language.isoen
dc.pagina.final237
dc.pagina.inicio223
dc.revistaMarine and freshwater behaviour and physiology
dc.rightsacceso restringido
dc.subjectmate choice
dc.subjectamphipod
dc.subjecthabitat
dc.subjectcurrent regime
dc.subjectrandom assortment
dc.subject.ods15 Life on Land
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleMate choice in the amphipod Eogammarus oclairi Bousfield: The role of current velocity, random assortment, habitat heterogeneity and male's behavior
dc.typeartículo
dc.volumen27
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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