Effect of Predation on Shaping Parental Brood Defense and Larval Ontogeny of Convict Cichlids Leading to Population Divergence
(1) Predation selects for antipredator competence in prey. For fishes with parental care, brood predators exert selection on the morphological phenotype of offspring, and also exert strong selection pressure to promote parental care behavior of adults. (2) This review summarizes field and lab studie...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Diversity |
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| Online Access: | https://www.mdpi.com/1424-2818/12/4/136 |
| _version_ | 1827719408594714624 |
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| author | Brian D. Wisenden |
| author_facet | Brian D. Wisenden |
| author_sort | Brian D. Wisenden |
| collection | DOAJ |
| description | (1) Predation selects for antipredator competence in prey. For fishes with parental care, brood predators exert selection on the morphological phenotype of offspring, and also exert strong selection pressure to promote parental care behavior of adults. (2) This review summarizes field and lab studies on the ontogeny of antipredator competence in convict cichlids, a freshwater fish with extended biparental care of their free-swimming young. (3) Here, data show that differences in swimming performance between small and large young are exploited by parents when they adopt (smaller) young. Velocity and acceleration of startle responses improves nonlinearly with body size, increasing rapidly at a point when the skeleton rapidly ossifies from cartilage to bone, at the size at which discrimination by adopting parents shifts, and the timing of change in the rate of change in area protected by parents. Convict cichlids in a Nicaraguan lake population showed a similar correlation among these traits, but these traits are delayed relative to Costa Rican fish. (4) Population divergence is likely explained by relatively more intense brood predation in the lake, which selects for different optima of larval antipredator competence and parental brood defense. |
| first_indexed | 2024-03-10T20:43:41Z |
| format | Article |
| id | doaj.art-375c5d7f20f945699154447a31159806 |
| institution | Directory Open Access Journal |
| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-10T20:43:41Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Diversity |
| spelling | doaj.art-375c5d7f20f945699154447a311598062023-11-19T20:29:05ZengMDPI AGDiversity1424-28182020-04-0112413610.3390/d12040136Effect of Predation on Shaping Parental Brood Defense and Larval Ontogeny of Convict Cichlids Leading to Population DivergenceBrian D. Wisenden0Biosciences Department, Minnesota State University Moorhead, Moorhead, MN 56563, USA(1) Predation selects for antipredator competence in prey. For fishes with parental care, brood predators exert selection on the morphological phenotype of offspring, and also exert strong selection pressure to promote parental care behavior of adults. (2) This review summarizes field and lab studies on the ontogeny of antipredator competence in convict cichlids, a freshwater fish with extended biparental care of their free-swimming young. (3) Here, data show that differences in swimming performance between small and large young are exploited by parents when they adopt (smaller) young. Velocity and acceleration of startle responses improves nonlinearly with body size, increasing rapidly at a point when the skeleton rapidly ossifies from cartilage to bone, at the size at which discrimination by adopting parents shifts, and the timing of change in the rate of change in area protected by parents. Convict cichlids in a Nicaraguan lake population showed a similar correlation among these traits, but these traits are delayed relative to Costa Rican fish. (4) Population divergence is likely explained by relatively more intense brood predation in the lake, which selects for different optima of larval antipredator competence and parental brood defense.https://www.mdpi.com/1424-2818/12/4/136predationbrood predatorsparental carediversificationskeletal ossificationconvict cichlid |
| spellingShingle | Brian D. Wisenden Effect of Predation on Shaping Parental Brood Defense and Larval Ontogeny of Convict Cichlids Leading to Population Divergence Diversity predation brood predators parental care diversification skeletal ossification convict cichlid |
| title | Effect of Predation on Shaping Parental Brood Defense and Larval Ontogeny of Convict Cichlids Leading to Population Divergence |
| title_full | Effect of Predation on Shaping Parental Brood Defense and Larval Ontogeny of Convict Cichlids Leading to Population Divergence |
| title_fullStr | Effect of Predation on Shaping Parental Brood Defense and Larval Ontogeny of Convict Cichlids Leading to Population Divergence |
| title_full_unstemmed | Effect of Predation on Shaping Parental Brood Defense and Larval Ontogeny of Convict Cichlids Leading to Population Divergence |
| title_short | Effect of Predation on Shaping Parental Brood Defense and Larval Ontogeny of Convict Cichlids Leading to Population Divergence |
| title_sort | effect of predation on shaping parental brood defense and larval ontogeny of convict cichlids leading to population divergence |
| topic | predation brood predators parental care diversification skeletal ossification convict cichlid |
| url | https://www.mdpi.com/1424-2818/12/4/136 |
| work_keys_str_mv | AT briandwisenden effectofpredationonshapingparentalbrooddefenseandlarvalontogenyofconvictcichlidsleadingtopopulationdivergence |