Are stocks of immature loggerhead sea turtles always mixed?

Sea turtles perform extensive migratory movements between feeding, developmental and nesting areas. Developmental areas for immature loggerheads turtles (Caretta caretta) are usually composed of individuals from multiple distant rookeries. Thus, impacts on such stocks usually affect multiple colonie...

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Detalles Bibliográficos
Autores principales:	Prosdocimi, Laura, Remis, Maria Isabel
Publicado:	2015
Materias:	Caretta caretta Conservation strategies MtDNA control region Sea turtles breeding site bycatch conservation planning dispersal foraging behavior genetic variation migratory behavior mitochondrial DNA species conservation stock assessment turtle type specimen Argentina Atlantic Ocean Buenos Aires [Argentina] Caretta Cheloniidae Testudines
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220981_v466_n_p85_Prosdocimi http://hdl.handle.net/20.500.12110/paper_00220981_v466_n_p85_Prosdocimi
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00220981_v466_n_p85_Prosdocimi
record_format	dspace
spelling	paper:paper_00220981_v466_n_p85_Prosdocimi2023-06-08T14:45:49Z Are stocks of immature loggerhead sea turtles always mixed? Prosdocimi, Laura Remis, Maria Isabel Caretta caretta Conservation strategies MtDNA control region Sea turtles breeding site bycatch conservation planning dispersal foraging behavior genetic variation migratory behavior mitochondrial DNA species conservation stock assessment turtle type specimen Argentina Atlantic Ocean Buenos Aires [Argentina] Caretta Caretta caretta Cheloniidae Testudines Sea turtles perform extensive migratory movements between feeding, developmental and nesting areas. Developmental areas for immature loggerheads turtles (Caretta caretta) are usually composed of individuals from multiple distant rookeries. Thus, impacts on such stocks usually affect multiple colonies, which require international efforts for conservation. This study describes the molecular genetic composition of the more austral foraging and developmental grounds of loggerhead sea turtles in the Atlantic Ocean and infers the possible origin and dispersal patterns of the species. Analyses were performed using shorter (380. bp) and larger (760. bp) sequences of the control region of mitochondrial DNA (mtDNA) from 24 samples of bycatch and 37 samples of stranded loggerhead sea turtles on the coast of the province of Buenos Aires, Argentina. All specimens (N=. 61) were adults and sub-adults (mean. ±. standard deviation curved carapace length CCL. =. 68.3. ±. 13.4. cm; range: 52.0 to 107.0. cm, N=. 41 individuals measured). Both shorter and longer mtDNA sequence analysis showed that in the foraging grounds of the Argentinean coast only haplotypes from Brazilian nesting areas (CC-A4. =. 98% and CC-A24. =. 2% for shorter sequences, and CC A4.2. =. 81%, CC A4.1. =. 17% and CC A24.1. =. 2% for longer sequences) were found. The homogeneous stock located relatively close to the rookery where individuals originated contradicts the paradigm of immature loggerhead sea turtles forming mixed stocks in foraging and developmental areas. The conservation of the stock in coastal areas of Argentina could benefit the nesting population in the nearby Brazilian rookeries, and could be achieved by conservation actions between these two countries, as well as Uruguay in between. © 2015 Elsevier B.V. Fil:Prosdocimi, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Remis, M.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220981_v466_n_p85_Prosdocimi http://hdl.handle.net/20.500.12110/paper_00220981_v466_n_p85_Prosdocimi
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Caretta caretta Conservation strategies MtDNA control region Sea turtles breeding site bycatch conservation planning dispersal foraging behavior genetic variation migratory behavior mitochondrial DNA species conservation stock assessment turtle type specimen Argentina Atlantic Ocean Buenos Aires [Argentina] Caretta Caretta caretta Cheloniidae Testudines
spellingShingle	Caretta caretta Conservation strategies MtDNA control region Sea turtles breeding site bycatch conservation planning dispersal foraging behavior genetic variation migratory behavior mitochondrial DNA species conservation stock assessment turtle type specimen Argentina Atlantic Ocean Buenos Aires [Argentina] Caretta Caretta caretta Cheloniidae Testudines Prosdocimi, Laura Remis, Maria Isabel Are stocks of immature loggerhead sea turtles always mixed?
topic_facet	Caretta caretta Conservation strategies MtDNA control region Sea turtles breeding site bycatch conservation planning dispersal foraging behavior genetic variation migratory behavior mitochondrial DNA species conservation stock assessment turtle type specimen Argentina Atlantic Ocean Buenos Aires [Argentina] Caretta Caretta caretta Cheloniidae Testudines
description	Sea turtles perform extensive migratory movements between feeding, developmental and nesting areas. Developmental areas for immature loggerheads turtles (Caretta caretta) are usually composed of individuals from multiple distant rookeries. Thus, impacts on such stocks usually affect multiple colonies, which require international efforts for conservation. This study describes the molecular genetic composition of the more austral foraging and developmental grounds of loggerhead sea turtles in the Atlantic Ocean and infers the possible origin and dispersal patterns of the species. Analyses were performed using shorter (380. bp) and larger (760. bp) sequences of the control region of mitochondrial DNA (mtDNA) from 24 samples of bycatch and 37 samples of stranded loggerhead sea turtles on the coast of the province of Buenos Aires, Argentina. All specimens (N=. 61) were adults and sub-adults (mean. ±. standard deviation curved carapace length CCL. =. 68.3. ±. 13.4. cm; range: 52.0 to 107.0. cm, N=. 41 individuals measured). Both shorter and longer mtDNA sequence analysis showed that in the foraging grounds of the Argentinean coast only haplotypes from Brazilian nesting areas (CC-A4. =. 98% and CC-A24. =. 2% for shorter sequences, and CC A4.2. =. 81%, CC A4.1. =. 17% and CC A24.1. =. 2% for longer sequences) were found. The homogeneous stock located relatively close to the rookery where individuals originated contradicts the paradigm of immature loggerhead sea turtles forming mixed stocks in foraging and developmental areas. The conservation of the stock in coastal areas of Argentina could benefit the nesting population in the nearby Brazilian rookeries, and could be achieved by conservation actions between these two countries, as well as Uruguay in between. © 2015 Elsevier B.V.
author	Prosdocimi, Laura Remis, Maria Isabel
author_facet	Prosdocimi, Laura Remis, Maria Isabel
author_sort	Prosdocimi, Laura
title	Are stocks of immature loggerhead sea turtles always mixed?
title_short	Are stocks of immature loggerhead sea turtles always mixed?
title_full	Are stocks of immature loggerhead sea turtles always mixed?
title_fullStr	Are stocks of immature loggerhead sea turtles always mixed?
title_full_unstemmed	Are stocks of immature loggerhead sea turtles always mixed?
title_sort	are stocks of immature loggerhead sea turtles always mixed?
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220981_v466_n_p85_Prosdocimi http://hdl.handle.net/20.500.12110/paper_00220981_v466_n_p85_Prosdocimi
work_keys_str_mv	AT prosdocimilaura arestocksofimmatureloggerheadseaturtlesalwaysmixed AT remismariaisabel arestocksofimmatureloggerheadseaturtlesalwaysmixed
_version_	1768545494702751744

Are stocks of immature loggerhead sea turtles always mixed?

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