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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Autores principales: Prosdocimi, L., Bugoni, L., Albareda, D., Remis, M.I.
Formato: JOUR
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: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 todo:paper_00220981_v466_n_p85_Prosdocimi
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spelling todo:paper_00220981_v466_n_p85_Prosdocimi2023-10-03T14:26:22Z Are stocks of immature loggerhead sea turtles always mixed? Prosdocimi, L. Bugoni, L. Albareda, D. Remis, M.I. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, L.
Bugoni, L.
Albareda, D.
Remis, M.I.
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.
format JOUR
author Prosdocimi, L.
Bugoni, L.
Albareda, D.
Remis, M.I.
author_facet Prosdocimi, L.
Bugoni, L.
Albareda, D.
Remis, M.I.
author_sort Prosdocimi, L.
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?
url http://hdl.handle.net/20.500.12110/paper_00220981_v466_n_p85_Prosdocimi
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AT bugonil arestocksofimmatureloggerheadseaturtlesalwaysmixed
AT albaredad arestocksofimmatureloggerheadseaturtlesalwaysmixed
AT remismi arestocksofimmatureloggerheadseaturtlesalwaysmixed
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