Influence of male mating history on female mate choice in the Trinidadian guppy
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The phenotype linked fertility hypothesis proposes that sexual selection should favour females who can accurately assess the fertilization potential of available mates and preferentially avoid mating with males who may be sperm depleted so as to minimize the risks associated with reproduction. I investigated experimentally whether females of the Trinidadian guppy are able to assess male functional fertility using a wide range of sensory cues and choose to avoid mating with males who may be sperm limited. On average, females avoided males that were apparently previously mated or actually sperm depleted, while exhibiting a strong preference for the other non sperm depleted male. Both visual and chemical cues from males appear to reveal their potential functional fertility and such cues were used by females to discriminate between sperm depleted and non sperm depleted males. My novel results are important as they support the above stated hypithesis.
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Copyright © 2015 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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scarponi-influenceofmalematinghistoryonfemalematechoice.pdf | 2023-05-04 | Public | Download |