Geometric morphometrics reveals body shape differences between sympatric redfish Sebastes mentella, Sebastes fasdatus and their hybrids in the Gulf of St Lawrence
Significant body shape differences were observed between two commercially important redfish species Sebastes fasdatus and Sebastes mentella , in the Gulf of St Lawrence, first classified according to the variability at the MDH‐A* locus, a diagnostic criterion for the two species in allopatry. The ob...
Published in: | Journal of Fish Biology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2002
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1095-8649.2002.tb02414.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2002.tb02414.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2002.tb02414.x |
id |
crwiley:10.1111/j.1095-8649.2002.tb02414.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1095-8649.2002.tb02414.x 2024-09-15T18:35:41+00:00 Geometric morphometrics reveals body shape differences between sympatric redfish Sebastes mentella, Sebastes fasdatus and their hybrids in the Gulf of St Lawrence Valentin, A. Sévigny, J.‐M. Chanut, J.‐P. 2002 http://dx.doi.org/10.1111/j.1095-8649.2002.tb02414.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2002.tb02414.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2002.tb02414.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 60, issue 4, page 857-875 ISSN 0022-1112 1095-8649 journal-article 2002 crwiley https://doi.org/10.1111/j.1095-8649.2002.tb02414.x 2024-08-09T04:20:39Z Significant body shape differences were observed between two commercially important redfish species Sebastes fasdatus and Sebastes mentella , in the Gulf of St Lawrence, first classified according to the variability at the MDH‐A* locus, a diagnostic criterion for the two species in allopatry. The observed sexual dimorphism was probably related to the presence of gravid females in the sample. Sebastes mentella appeared to be more fusiform than S. fasdatus , a characteristic that may reflect the more pelagic behaviour of S. mentella . The body shape of their hybrids was closer to that of S. mentella . Similarities between hybrids and S. mentella were also observed for meristic characteristics and depth distribution. The implications of these similarities for introgression are discussed. Body shape variability of specimens of hybrid origin was greater than that of either parental species, with features ranging from S. mentella‐like to S. fasciatus ‐like. The role of introgression in generating morphological variability is emphasized. Article in Journal/Newspaper Sebastes mentella Wiley Online Library Journal of Fish Biology 60 4 857 875 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Significant body shape differences were observed between two commercially important redfish species Sebastes fasdatus and Sebastes mentella , in the Gulf of St Lawrence, first classified according to the variability at the MDH‐A* locus, a diagnostic criterion for the two species in allopatry. The observed sexual dimorphism was probably related to the presence of gravid females in the sample. Sebastes mentella appeared to be more fusiform than S. fasdatus , a characteristic that may reflect the more pelagic behaviour of S. mentella . The body shape of their hybrids was closer to that of S. mentella . Similarities between hybrids and S. mentella were also observed for meristic characteristics and depth distribution. The implications of these similarities for introgression are discussed. Body shape variability of specimens of hybrid origin was greater than that of either parental species, with features ranging from S. mentella‐like to S. fasciatus ‐like. The role of introgression in generating morphological variability is emphasized. |
format |
Article in Journal/Newspaper |
author |
Valentin, A. Sévigny, J.‐M. Chanut, J.‐P. |
spellingShingle |
Valentin, A. Sévigny, J.‐M. Chanut, J.‐P. Geometric morphometrics reveals body shape differences between sympatric redfish Sebastes mentella, Sebastes fasdatus and their hybrids in the Gulf of St Lawrence |
author_facet |
Valentin, A. Sévigny, J.‐M. Chanut, J.‐P. |
author_sort |
Valentin, A. |
title |
Geometric morphometrics reveals body shape differences between sympatric redfish Sebastes mentella, Sebastes fasdatus and their hybrids in the Gulf of St Lawrence |
title_short |
Geometric morphometrics reveals body shape differences between sympatric redfish Sebastes mentella, Sebastes fasdatus and their hybrids in the Gulf of St Lawrence |
title_full |
Geometric morphometrics reveals body shape differences between sympatric redfish Sebastes mentella, Sebastes fasdatus and their hybrids in the Gulf of St Lawrence |
title_fullStr |
Geometric morphometrics reveals body shape differences between sympatric redfish Sebastes mentella, Sebastes fasdatus and their hybrids in the Gulf of St Lawrence |
title_full_unstemmed |
Geometric morphometrics reveals body shape differences between sympatric redfish Sebastes mentella, Sebastes fasdatus and their hybrids in the Gulf of St Lawrence |
title_sort |
geometric morphometrics reveals body shape differences between sympatric redfish sebastes mentella, sebastes fasdatus and their hybrids in the gulf of st lawrence |
publisher |
Wiley |
publishDate |
2002 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2002.tb02414.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2002.tb02414.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2002.tb02414.x |
genre |
Sebastes mentella |
genre_facet |
Sebastes mentella |
op_source |
Journal of Fish Biology volume 60, issue 4, page 857-875 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2002.tb02414.x |
container_title |
Journal of Fish Biology |
container_volume |
60 |
container_issue |
4 |
container_start_page |
857 |
op_container_end_page |
875 |
_version_ |
1810478878424039424 |