Age and growth in Odontocymbiola magellanica (Gastropoda: Volutidae) from Golfo Nuevo, Patagonia, Argentina

Growth, age and somatic production of the benthic predator Odontocymbiola magellanica were studied in Golfo Nuevo (42°S 65°W), on the South American Atlantic shelf. Stable oxygen isotope ratios confirmed semiannual formation of internal and external shell growth marks. Mean shell length (SL) of fema...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Bigatti, G., Penchaszadeh, P.E., Cledón, M.
Formato: JOUR
Materias:
age
gastropod
growth rate
size effect
zoobenthos
Argentina
Chubut
Golfo Nuevo
South America
Gastropoda
Volutidae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00253162_v150_n6_p1199_Bigatti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00253162_v150_n6_p1199_Bigatti
record_format dspace
spelling todo:paper_00253162_v150_n6_p1199_Bigatti2023-10-03T14:35:56Z Age and growth in Odontocymbiola magellanica (Gastropoda: Volutidae) from Golfo Nuevo, Patagonia, Argentina Bigatti, G. Penchaszadeh, P.E. Cledón, M. age gastropod growth rate size effect zoobenthos Argentina Chubut Golfo Nuevo South America Gastropoda Volutidae Growth, age and somatic production of the benthic predator Odontocymbiola magellanica were studied in Golfo Nuevo (42°S 65°W), on the South American Atlantic shelf. Stable oxygen isotope ratios confirmed semiannual formation of internal and external shell growth marks. Mean shell length (SL) of females was 115 and 112 mm for males, while population modal shell-free wet mass (SFWM) was 62.8 g. A Gompertz growth function (SL ∞ = 200 mm, K = 0.197, t 0 = 5.486) fitted 113 pairs of size-at-age data (12 shells) best. O. magellanica is a long-lived species, reaching up to 20 years of age. The maximum individual somatic production of 29.3 g SFWM per year is attained at 145 mm SL, which corresponds to about 12 years of age. The life span of this volutid seems to be twice compared with other large gastropods. O. magellanica is a valuable and exploitable resource regarding its large size and somatic production, but on the other hand, its slow growth, late maturity and direct development makes it extremely vulnerable to overexploitation. © 2006 Springer-Verlag. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00253162_v150_n6_p1199_Bigatti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic age
gastropod
growth rate
size effect
zoobenthos
Argentina
Chubut
Golfo Nuevo
South America
Gastropoda
Volutidae
spellingShingle age
gastropod
growth rate
size effect
zoobenthos
Argentina
Chubut
Golfo Nuevo
South America
Gastropoda
Volutidae
Bigatti, G.
Penchaszadeh, P.E.
Cledón, M.
Age and growth in Odontocymbiola magellanica (Gastropoda: Volutidae) from Golfo Nuevo, Patagonia, Argentina
topic_facet age
gastropod
growth rate
size effect
zoobenthos
Argentina
Chubut
Golfo Nuevo
South America
Gastropoda
Volutidae
description Growth, age and somatic production of the benthic predator Odontocymbiola magellanica were studied in Golfo Nuevo (42°S 65°W), on the South American Atlantic shelf. Stable oxygen isotope ratios confirmed semiannual formation of internal and external shell growth marks. Mean shell length (SL) of females was 115 and 112 mm for males, while population modal shell-free wet mass (SFWM) was 62.8 g. A Gompertz growth function (SL ∞ = 200 mm, K = 0.197, t 0 = 5.486) fitted 113 pairs of size-at-age data (12 shells) best. O. magellanica is a long-lived species, reaching up to 20 years of age. The maximum individual somatic production of 29.3 g SFWM per year is attained at 145 mm SL, which corresponds to about 12 years of age. The life span of this volutid seems to be twice compared with other large gastropods. O. magellanica is a valuable and exploitable resource regarding its large size and somatic production, but on the other hand, its slow growth, late maturity and direct development makes it extremely vulnerable to overexploitation. © 2006 Springer-Verlag.
format JOUR
author Bigatti, G.
Penchaszadeh, P.E.
Cledón, M.
author_facet Bigatti, G.
Penchaszadeh, P.E.
Cledón, M.
author_sort Bigatti, G.
title Age and growth in Odontocymbiola magellanica (Gastropoda: Volutidae) from Golfo Nuevo, Patagonia, Argentina
title_short Age and growth in Odontocymbiola magellanica (Gastropoda: Volutidae) from Golfo Nuevo, Patagonia, Argentina
title_full Age and growth in Odontocymbiola magellanica (Gastropoda: Volutidae) from Golfo Nuevo, Patagonia, Argentina
title_fullStr Age and growth in Odontocymbiola magellanica (Gastropoda: Volutidae) from Golfo Nuevo, Patagonia, Argentina
title_full_unstemmed Age and growth in Odontocymbiola magellanica (Gastropoda: Volutidae) from Golfo Nuevo, Patagonia, Argentina
title_sort age and growth in odontocymbiola magellanica (gastropoda: volutidae) from golfo nuevo, patagonia, argentina
url http://hdl.handle.net/20.500.12110/paper_00253162_v150_n6_p1199_Bigatti
work_keys_str_mv AT bigattig ageandgrowthinodontocymbiolamagellanicagastropodavolutidaefromgolfonuevopatagoniaargentina
AT penchaszadehpe ageandgrowthinodontocymbiolamagellanicagastropodavolutidaefromgolfonuevopatagoniaargentina
AT cledonm ageandgrowthinodontocymbiolamagellanicagastropodavolutidaefromgolfonuevopatagoniaargentina
_version_ 1782026205322543104

Ejemplares similares