Parallel evolution of the sexes? Effects of predation and habitat features on the size and shape of wild guppies
Environmental gradients often lead to the parallel evolution of populations and species. To what extent do such gradients also lead to parallel evolution of the sexes? We used guppies (Poecilia reticulata) to examine the parallel and independent (sex‐specific) aspects of population divergence in res...
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| Veröffentlicht in: | Journal of evolutionary biology 2006-05, Vol.19 (3), p.741-754 |
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| creator | HENDRY, A. P. KELLY, M. L. KINNISON, M. T. REZNICK, D. N. |
| description | Environmental gradients often lead to the parallel evolution of populations and species. To what extent do such gradients also lead to parallel evolution of the sexes? We used guppies (Poecilia reticulata) to examine the parallel and independent (sex‐specific) aspects of population divergence in response to predation and habitat features. Geometric morphometrics was used to analyse size and shape variation for 1335 guppies from 27 to 31 sites sampled in each of 2 years. Body size showed strong parallel population divergence; both sexes were larger at sites with a more open canopy and with higher flow. Body shape showed a mixture of parallel and independent population divergence. The strongest and most consistent effects were (1) high‐predation sites had males with smaller heads and deeper caudal peduncles, (2) open‐canopy sites had females with smaller heads and more distended abdomens and (3) high‐flow sites had males and females with smaller heads and deeper caudal peduncles. |
| doi_str_mv | 10.1111/j.1420-9101.2005.01061.x |
| format | Article |
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P.</creatorcontrib><creatorcontrib>KELLY, M. L.</creatorcontrib><creatorcontrib>KINNISON, M. T.</creatorcontrib><creatorcontrib>REZNICK, D. N.</creatorcontrib><title>Parallel evolution of the sexes? Effects of predation and habitat features on the size and shape of wild guppies</title><title>Journal of evolutionary biology</title><addtitle>J Evol Biol</addtitle><description>Environmental gradients often lead to the parallel evolution of populations and species. To what extent do such gradients also lead to parallel evolution of the sexes? We used guppies (Poecilia reticulata) to examine the parallel and independent (sex‐specific) aspects of population divergence in response to predation and habitat features. Geometric morphometrics was used to analyse size and shape variation for 1335 guppies from 27 to 31 sites sampled in each of 2 years. Body size showed strong parallel population divergence; both sexes were larger at sites with a more open canopy and with higher flow. 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The strongest and most consistent effects were (1) high‐predation sites had males with smaller heads and deeper caudal peduncles, (2) open‐canopy sites had females with smaller heads and more distended abdomens and (3) high‐flow sites had males and females with smaller heads and deeper caudal peduncles.</description><subject>adaptive divergence</subject><subject>adaptive radiation</subject><subject>Animals</subject><subject>biomechanics</subject><subject>Body Size</subject><subject>ecomorphology</subject><subject>Environment</subject><subject>Evolution</subject><subject>Evolution, Molecular</subject><subject>Female</subject><subject>Fish</subject><subject>Freshwater</subject><subject>Genetic diversity</subject><subject>geometric morphometrics</subject><subject>Habitats</subject><subject>local adaptation</subject><subject>Male</subject><subject>Poecilia - anatomy & histology</subject><subject>Poecilia - physiology</subject><subject>Poecilia reticulata</subject><subject>Predation</subject><subject>Predatory Behavior</subject><subject>Sex Characteristics</subject><subject>Sexes</subject><subject>sexual dimorphism</subject><subject>Size</subject><subject>swimming performance</subject><subject>Trinidad and Tobago</subject><issn>1010-061X</issn><issn>1420-9101</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkU1v1DAQhq0K1JbCX6isHrgleBJ_xIcKQbV8qRI9FImb5STjblbZJNgJbPn12LsrkLiALx7NPO8rzbyEUGA5xPdqkwMvWKaBQV4wJnIGTEK-OyHnvwdPYh3bWRx8PSPPQtgwBpILcUrOQErFhYJzMt1Zb_see4rfx36Zu3Ggo6PzGmnAHYbXdOUcNnNI3clja_eIHVq6tnU325k6tPPiMRLDQdf9xD0Q1nbCpPvR9S19WKapw_CcPHW2D_ji-F-QL-9W9zcfstvP7z_evLnNGsEBsgqUE3UjWN2WBePaqbYWSpZVXTWykkzXoK2O-5RQcCu5UsK6oi1UI1BpJ8oL8vLgO_nx24JhNtsuNNj3dsBxCUYqXQqt-D9BUAWUWibw6i9wMy5-iEuYgqVzcq0iVB2gxo8heHRm8t3W-kcDzKTszMakiEyKyKTszD47s4vSy6P_Um-x_SM8hhWB6wMQ74mP_21sPq3epqr8Bahzpks</recordid><startdate>200605</startdate><enddate>200605</enddate><creator>HENDRY, A. 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| source | MEDLINE; Wiley Online Library Journals Frontfile Complete; Oxford University Press Journals All Titles (1996-Current); EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | adaptive divergence adaptive radiation Animals biomechanics Body Size ecomorphology Environment Evolution Evolution, Molecular Female Fish Freshwater Genetic diversity geometric morphometrics Habitats local adaptation Male Poecilia - anatomy & histology Poecilia - physiology Poecilia reticulata Predation Predatory Behavior Sex Characteristics Sexes sexual dimorphism Size swimming performance Trinidad and Tobago |
| title | Parallel evolution of the sexes? Effects of predation and habitat features on the size and shape of wild guppies |
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