Mate-guarding behavior enhances male reproductive success via familiarization with mating partners in medaka fish
Background: Male-male competition and female mating preference are major mechanisms of sexual selection, which influences individual fitness. How male-male competition affects female preference, however, remains poorly understood. Under laboratory conditions, medaka (Oryzias latipes) males compete t...
| Main Authors: | , , , , , , , |
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| Format: | Article |
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Biomed Central Ltd
2018
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| Online Access: | http://hdl.handle.net/1721.1/116623 https://orcid.org/0000-0003-1566-0063 |
| _version_ | 1811074138113048576 |
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| author | Yokoi, Saori Ansai, Satoshi Kinoshita, Masato Naruse, Kiyoshi Kamei, Yasuhiro Young, Larry J. Takeuchi, Hideaki Okuyama, Teruhiro |
| author2 | Picower Institute for Learning and Memory |
| author_facet | Picower Institute for Learning and Memory Yokoi, Saori Ansai, Satoshi Kinoshita, Masato Naruse, Kiyoshi Kamei, Yasuhiro Young, Larry J. Takeuchi, Hideaki Okuyama, Teruhiro |
| author_sort | Yokoi, Saori |
| collection | MIT |
| description | Background: Male-male competition and female mating preference are major mechanisms of sexual selection, which influences individual fitness. How male-male competition affects female preference, however, remains poorly understood. Under laboratory conditions, medaka (Oryzias latipes) males compete to position themselves between a rival male and the female (mate-guarding) in triadic relationships (male, male, and female). In addition, females prefer to mate with visually familiar males. In the present study, to examine whether mate-guarding affects female preference via visual familiarization, we established a novel behavioral test to simultaneously quantify visual familiarization of focal males with females and mate-guarding against rival males. In addition, we investigated the effect of familiarization on male reproductive success in triadic relationships. Results: Three fish (female, male, male) were placed separately in a transparent three-chamber tank, which allowed the male in the center (near male) to maintain closer proximity to the female than the other male (far male). Placement of the wild-type male in the center blocked visual familiarization of the far male by the female via mate-guarding. In contrast, placement of an arginine-vasotocin receptor mutant male, which exhibits mate-guarding deficits, in the center, allowing for maintaining close proximity to the female, did not block familiarization of the far male by the female. We also demonstrated that the reproductive success of males was significantly decreased by depriving females visual familiarization with the males. Conclusions: Our findings indicated that, at least in triadic relationships, dominance in mate-guarding, not simply close proximity, allows males to gain familiarity with the female over their rivals, which may enhance female preference for the dominant male. These findings focusing on the triadic relationships of medaka may contribute to our understanding of the adaptive significance of persistent mate-guarding, as well as female preference for familiar mates. |
| first_indexed | 2024-09-23T09:44:02Z |
| format | Article |
| id | mit-1721.1/116623 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:44:02Z |
| publishDate | 2018 |
| publisher | Biomed Central Ltd |
| record_format | dspace |
| spelling | mit-1721.1/1166232022-09-26T13:25:26Z Mate-guarding behavior enhances male reproductive success via familiarization with mating partners in medaka fish Yokoi, Saori Ansai, Satoshi Kinoshita, Masato Naruse, Kiyoshi Kamei, Yasuhiro Young, Larry J. Takeuchi, Hideaki Okuyama, Teruhiro Picower Institute for Learning and Memory Okuyama, Teruhiro Background: Male-male competition and female mating preference are major mechanisms of sexual selection, which influences individual fitness. How male-male competition affects female preference, however, remains poorly understood. Under laboratory conditions, medaka (Oryzias latipes) males compete to position themselves between a rival male and the female (mate-guarding) in triadic relationships (male, male, and female). In addition, females prefer to mate with visually familiar males. In the present study, to examine whether mate-guarding affects female preference via visual familiarization, we established a novel behavioral test to simultaneously quantify visual familiarization of focal males with females and mate-guarding against rival males. In addition, we investigated the effect of familiarization on male reproductive success in triadic relationships. Results: Three fish (female, male, male) were placed separately in a transparent three-chamber tank, which allowed the male in the center (near male) to maintain closer proximity to the female than the other male (far male). Placement of the wild-type male in the center blocked visual familiarization of the far male by the female via mate-guarding. In contrast, placement of an arginine-vasotocin receptor mutant male, which exhibits mate-guarding deficits, in the center, allowing for maintaining close proximity to the female, did not block familiarization of the far male by the female. We also demonstrated that the reproductive success of males was significantly decreased by depriving females visual familiarization with the males. Conclusions: Our findings indicated that, at least in triadic relationships, dominance in mate-guarding, not simply close proximity, allows males to gain familiarity with the female over their rivals, which may enhance female preference for the dominant male. These findings focusing on the triadic relationships of medaka may contribute to our understanding of the adaptive significance of persistent mate-guarding, as well as female preference for familiar mates. 2018-06-26T15:14:25Z 2018-06-26T15:14:25Z 2016-06 2015-12 2018-06-26T14:40:45Z Article http://purl.org/eprint/type/JournalArticle 1742-9994 http://hdl.handle.net/1721.1/116623 Yokoi, Saori et al. “Mate-Guarding Behavior Enhances Male Reproductive Success via Familiarization with Mating Partners in Medaka Fish.” Frontiers in Zoology 13, 1 (June 2016): 21 © 2016 Yokoi et al https://orcid.org/0000-0003-1566-0063 http://dx.doi.org/10.1186/s12983-016-0152-2 Frontiers in Zoology Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Biomed Central Ltd Frontiers |
| spellingShingle | Yokoi, Saori Ansai, Satoshi Kinoshita, Masato Naruse, Kiyoshi Kamei, Yasuhiro Young, Larry J. Takeuchi, Hideaki Okuyama, Teruhiro Mate-guarding behavior enhances male reproductive success via familiarization with mating partners in medaka fish |
| title | Mate-guarding behavior enhances male reproductive success via familiarization with mating partners in medaka fish |
| title_full | Mate-guarding behavior enhances male reproductive success via familiarization with mating partners in medaka fish |
| title_fullStr | Mate-guarding behavior enhances male reproductive success via familiarization with mating partners in medaka fish |
| title_full_unstemmed | Mate-guarding behavior enhances male reproductive success via familiarization with mating partners in medaka fish |
| title_short | Mate-guarding behavior enhances male reproductive success via familiarization with mating partners in medaka fish |
| title_sort | mate guarding behavior enhances male reproductive success via familiarization with mating partners in medaka fish |
| url | http://hdl.handle.net/1721.1/116623 https://orcid.org/0000-0003-1566-0063 |
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