Population structure of the intertidal crab Cyrtograpsus altimanus (Brachyura: Varunidae) in a northern Patagonia mussel bed

The population structure, size at maturity, reproductive period, recruitment and habitat use were studied in a population of the grapsoid crab Cyrtograpsus altimanus in an intertidal mussel bed at San Antonio Bay, Argentina. Samples were taken from October 2000 to January 2002. Crabs were sized and...

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Autores principales: Vázquez, M.G., Bas, C.C., Spivak, E.D.
Formato: JOUR
Lenguaje:English
Materias:
marine crustaceans
population structure
refuge
size distribution
bivalve
body size
crab
growth rate
habitat use
intertidal community
marine ecosystem
recruitment (population dynamics)
size at maturity
Argentina
Rio Negro [Argentina]
San Antonio Bay [Rio Negro]
Brachyura
Crustacea
Cyrtograpsus altimanus
Decapoda (Crustacea)
Grapsoidea
Varunidae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00253154_v92_n2_p327_Vazquez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00253154_v92_n2_p327_Vazquez
record_format dspace
spelling todo:paper_00253154_v92_n2_p327_Vazquez2023-10-03T14:35:46Z Population structure of the intertidal crab Cyrtograpsus altimanus (Brachyura: Varunidae) in a northern Patagonia mussel bed Vázquez, M.G. Bas, C.C. Spivak, E.D. marine crustaceans population structure refuge size distribution bivalve body size crab growth rate habitat use intertidal community marine ecosystem population structure recruitment (population dynamics) refuge size at maturity size distribution Argentina Rio Negro [Argentina] San Antonio Bay [Rio Negro] Brachyura Crustacea Cyrtograpsus altimanus Decapoda (Crustacea) Grapsoidea Varunidae The population structure, size at maturity, reproductive period, recruitment and habitat use were studied in a population of the grapsoid crab Cyrtograpsus altimanus in an intertidal mussel bed at San Antonio Bay, Argentina. Samples were taken from October 2000 to January 2002. Crabs were sized and sexed to estimate size-frequency distributions (SFD). Modal groups of males and females were the same. Growth, evidenced by the shift to right of SFD modal classes, was observed in spring, summer and autumn. Size at maturity of females varied seasonally. Ovigerous females were found in winter, spring and summer, but two discrete recruitment events (in spring and autumn) are proposed. Based on the maximum male and female sizes found in the mussel bed, a size constraint is proposed that forces large crabs to migrate to cobblestone adjacent habitats. © 2011 Marine Biological Association of the United Kingdom. Fil:Spivak, E.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00253154_v92_n2_p327_Vazquez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language English
orig_language_str_mv English
topic marine crustaceans
population structure
refuge
size distribution
bivalve
body size
crab
growth rate
habitat use
intertidal community
marine ecosystem
population structure
recruitment (population dynamics)
refuge
size at maturity
size distribution
Argentina
Rio Negro [Argentina]
San Antonio Bay [Rio Negro]
Brachyura
Crustacea
Cyrtograpsus altimanus
Decapoda (Crustacea)
Grapsoidea
Varunidae
spellingShingle marine crustaceans
population structure
refuge
size distribution
bivalve
body size
crab
growth rate
habitat use
intertidal community
marine ecosystem
population structure
recruitment (population dynamics)
refuge
size at maturity
size distribution
Argentina
Rio Negro [Argentina]
San Antonio Bay [Rio Negro]
Brachyura
Crustacea
Cyrtograpsus altimanus
Decapoda (Crustacea)
Grapsoidea
Varunidae
Vázquez, M.G.
Bas, C.C.
Spivak, E.D.
Population structure of the intertidal crab Cyrtograpsus altimanus (Brachyura: Varunidae) in a northern Patagonia mussel bed
topic_facet marine crustaceans
population structure
refuge
size distribution
bivalve
body size
crab
growth rate
habitat use
intertidal community
marine ecosystem
population structure
recruitment (population dynamics)
refuge
size at maturity
size distribution
Argentina
Rio Negro [Argentina]
San Antonio Bay [Rio Negro]
Brachyura
Crustacea
Cyrtograpsus altimanus
Decapoda (Crustacea)
Grapsoidea
Varunidae
description The population structure, size at maturity, reproductive period, recruitment and habitat use were studied in a population of the grapsoid crab Cyrtograpsus altimanus in an intertidal mussel bed at San Antonio Bay, Argentina. Samples were taken from October 2000 to January 2002. Crabs were sized and sexed to estimate size-frequency distributions (SFD). Modal groups of males and females were the same. Growth, evidenced by the shift to right of SFD modal classes, was observed in spring, summer and autumn. Size at maturity of females varied seasonally. Ovigerous females were found in winter, spring and summer, but two discrete recruitment events (in spring and autumn) are proposed. Based on the maximum male and female sizes found in the mussel bed, a size constraint is proposed that forces large crabs to migrate to cobblestone adjacent habitats. © 2011 Marine Biological Association of the United Kingdom.
format JOUR
author Vázquez, M.G.
Bas, C.C.
Spivak, E.D.
author_facet Vázquez, M.G.
Bas, C.C.
Spivak, E.D.
author_sort Vázquez, M.G.
title Population structure of the intertidal crab Cyrtograpsus altimanus (Brachyura: Varunidae) in a northern Patagonia mussel bed
title_short Population structure of the intertidal crab Cyrtograpsus altimanus (Brachyura: Varunidae) in a northern Patagonia mussel bed
title_full Population structure of the intertidal crab Cyrtograpsus altimanus (Brachyura: Varunidae) in a northern Patagonia mussel bed
title_fullStr Population structure of the intertidal crab Cyrtograpsus altimanus (Brachyura: Varunidae) in a northern Patagonia mussel bed
title_full_unstemmed Population structure of the intertidal crab Cyrtograpsus altimanus (Brachyura: Varunidae) in a northern Patagonia mussel bed
title_sort population structure of the intertidal crab cyrtograpsus altimanus (brachyura: varunidae) in a northern patagonia mussel bed
url http://hdl.handle.net/20.500.12110/paper_00253154_v92_n2_p327_Vazquez
work_keys_str_mv AT vazquezmg populationstructureoftheintertidalcrabcyrtograpsusaltimanusbrachyuravarunidaeinanorthernpatagoniamusselbed
AT bascc populationstructureoftheintertidalcrabcyrtograpsusaltimanusbrachyuravarunidaeinanorthernpatagoniamusselbed
AT spivaked populationstructureoftheintertidalcrabcyrtograpsusaltimanusbrachyuravarunidaeinanorthernpatagoniamusselbed
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