Body growth and reproductive parameters of common dolphins from the southwestern Atlantic
Abstract Common dolphins, Delphinus delphis , in the southwestern Atlantic Ocean are subject to incidental mortality in fishing gear. However, no information on trends in abundance or estimates of bycatch mortality are available to evaluate the impact of this threat on the population. This study pre...
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Online Access: | http://dx.doi.org/10.1111/mms.12934 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12934 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mms.12934 |
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crwiley:10.1111/mms.12934 2023-12-03T10:27:01+01:00 Body growth and reproductive parameters of common dolphins from the southwestern Atlantic Grandi, María Florencia Heredia, Federico M. Sosa Drouville, Ailin Dellabianca, Natalia A. Crespo, Enrique A. Cetacean Society International Fondo para la Investigación Científica y Tecnológica Marine Mammal Commission Mohamed bin Zayed Species Conservation Fund 2022 http://dx.doi.org/10.1111/mms.12934 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12934 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mms.12934 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Marine Mammal Science volume 38, issue 4, page 1470-1488 ISSN 0824-0469 1748-7692 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2022 crwiley https://doi.org/10.1111/mms.12934 2023-11-09T14:35:01Z Abstract Common dolphins, Delphinus delphis , in the southwestern Atlantic Ocean are subject to incidental mortality in fishing gear. However, no information on trends in abundance or estimates of bycatch mortality are available to evaluate the impact of this threat on the population. This study presents estimates of life history parameters using postmortem data obtained over a 17‐year period in Argentina. Ages were determined for 93 specimens, and reproductive organ samples were examined ( n = 89). Immature animals ranged from 0 to 6 years in females and from 0 to 9 years in males. Mature animals ranged from 7 to 21 years in females and from 6 to 23 years in males. The asymptotic body length ( L ∞ ) described by a Gompertz model fit to age‐length data was 196 cm, 95% CI [192.45, 199.76] for females and 210.75 cm, 95% CI [206.64, 215.30] for males and was attained at 14 years in females and 15 years in males. Comparison to other populations showed that L ∞ were shorter than estimates from New Zealand, similar to L ∞ from eastern North Atlantic, and longer than estimates from North Pacific common dolphins. L max reported here were shorter than New Zealand ones but similar to those previously reported from other populations. Article in Journal/Newspaper North Atlantic Wiley Online Library (via Crossref) Pacific New Zealand Argentina Marine Mammal Science 38 4 1470 1488 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Grandi, María Florencia Heredia, Federico M. Sosa Drouville, Ailin Dellabianca, Natalia A. Crespo, Enrique A. Body growth and reproductive parameters of common dolphins from the southwestern Atlantic |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract Common dolphins, Delphinus delphis , in the southwestern Atlantic Ocean are subject to incidental mortality in fishing gear. However, no information on trends in abundance or estimates of bycatch mortality are available to evaluate the impact of this threat on the population. This study presents estimates of life history parameters using postmortem data obtained over a 17‐year period in Argentina. Ages were determined for 93 specimens, and reproductive organ samples were examined ( n = 89). Immature animals ranged from 0 to 6 years in females and from 0 to 9 years in males. Mature animals ranged from 7 to 21 years in females and from 6 to 23 years in males. The asymptotic body length ( L ∞ ) described by a Gompertz model fit to age‐length data was 196 cm, 95% CI [192.45, 199.76] for females and 210.75 cm, 95% CI [206.64, 215.30] for males and was attained at 14 years in females and 15 years in males. Comparison to other populations showed that L ∞ were shorter than estimates from New Zealand, similar to L ∞ from eastern North Atlantic, and longer than estimates from North Pacific common dolphins. L max reported here were shorter than New Zealand ones but similar to those previously reported from other populations. |
author2 |
Cetacean Society International Fondo para la Investigación Científica y Tecnológica Marine Mammal Commission Mohamed bin Zayed Species Conservation Fund |
format |
Article in Journal/Newspaper |
author |
Grandi, María Florencia Heredia, Federico M. Sosa Drouville, Ailin Dellabianca, Natalia A. Crespo, Enrique A. |
author_facet |
Grandi, María Florencia Heredia, Federico M. Sosa Drouville, Ailin Dellabianca, Natalia A. Crespo, Enrique A. |
author_sort |
Grandi, María Florencia |
title |
Body growth and reproductive parameters of common dolphins from the southwestern Atlantic |
title_short |
Body growth and reproductive parameters of common dolphins from the southwestern Atlantic |
title_full |
Body growth and reproductive parameters of common dolphins from the southwestern Atlantic |
title_fullStr |
Body growth and reproductive parameters of common dolphins from the southwestern Atlantic |
title_full_unstemmed |
Body growth and reproductive parameters of common dolphins from the southwestern Atlantic |
title_sort |
body growth and reproductive parameters of common dolphins from the southwestern atlantic |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/mms.12934 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12934 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mms.12934 |
geographic |
Pacific New Zealand Argentina |
geographic_facet |
Pacific New Zealand Argentina |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Marine Mammal Science volume 38, issue 4, page 1470-1488 ISSN 0824-0469 1748-7692 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/mms.12934 |
container_title |
Marine Mammal Science |
container_volume |
38 |
container_issue |
4 |
container_start_page |
1470 |
op_container_end_page |
1488 |
_version_ |
1784276567260659712 |