Age, growth, and mortality of the prosobranch Zidona dufresnei (Donovan, 1823) in the Mar del Plata area, south-western Atlantic Ocean

The volutid snail Zidona dufresnei is a benthic top predator in the Mar del Plata (Argentina) shelf area where it was subjected to unregulated commercial exploitation for more than 20 years. So far there is no stock management, and hitherto even the most basic information on population dynamics of t...

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Detalles Bibliográficos
Autores principales: Giménez, Juliana, Penchaszadeh, Pablo Enrique
Publicado: 2004
Materias:
age
growth
mortality
population dynamics
snail
Argentina
Atlantic Ocean
Buenos Aires [Argentina]
Mar del Plata
South America
Gastropoda
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253162_v145_n4_p707_Gimenez
http://hdl.handle.net/20.500.12110/paper_00253162_v145_n4_p707_Gimenez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00253162_v145_n4_p707_Gimenez
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spelling paper:paper_00253162_v145_n4_p707_Gimenez2023-06-08T14:53:00Z Age, growth, and mortality of the prosobranch Zidona dufresnei (Donovan, 1823) in the Mar del Plata area, south-western Atlantic Ocean Giménez, Juliana Penchaszadeh, Pablo Enrique age growth mortality population dynamics snail Argentina Atlantic Ocean Buenos Aires [Argentina] Mar del Plata South America Gastropoda The volutid snail Zidona dufresnei is a benthic top predator in the Mar del Plata (Argentina) shelf area where it was subjected to unregulated commercial exploitation for more than 20 years. So far there is no stock management, and hitherto even the most basic information on population dynamics of this species is missing. Annual formation of internal shell growth bands visible by x-ray was confirmed by the stable oxygen isotope record in the shell carbonate that reflects seasonal oscillations in water temperature. A Gompertz growth function (SL∞ = 208.84 mm, K = 0.211 year-1, t0 = 5.496) fitted 142 pairs of size-at-age data (30 shells) best. Maximum individual production amounted to 26.8 g shell-free wet mass (SFWM) at 115 mm shell length. Based on a size-frequency distribution derived from commercial catches, annual mortality rate of Z. dufresnei was estimated to be 0.61 (± 0.21) year-1. © Springer-Verlag 2004. Fil:Giménez, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Penchaszadeh, P.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253162_v145_n4_p707_Gimenez http://hdl.handle.net/20.500.12110/paper_00253162_v145_n4_p707_Gimenez
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
growth
mortality
population dynamics
snail
Argentina
Atlantic Ocean
Buenos Aires [Argentina]
Mar del Plata
South America
Gastropoda
spellingShingle age
growth
mortality
population dynamics
snail
Argentina
Atlantic Ocean
Buenos Aires [Argentina]
Mar del Plata
South America
Gastropoda
Giménez, Juliana
Penchaszadeh, Pablo Enrique
Age, growth, and mortality of the prosobranch Zidona dufresnei (Donovan, 1823) in the Mar del Plata area, south-western Atlantic Ocean
topic_facet age
growth
mortality
population dynamics
snail
Argentina
Atlantic Ocean
Buenos Aires [Argentina]
Mar del Plata
South America
Gastropoda
description The volutid snail Zidona dufresnei is a benthic top predator in the Mar del Plata (Argentina) shelf area where it was subjected to unregulated commercial exploitation for more than 20 years. So far there is no stock management, and hitherto even the most basic information on population dynamics of this species is missing. Annual formation of internal shell growth bands visible by x-ray was confirmed by the stable oxygen isotope record in the shell carbonate that reflects seasonal oscillations in water temperature. A Gompertz growth function (SL∞ = 208.84 mm, K = 0.211 year-1, t0 = 5.496) fitted 142 pairs of size-at-age data (30 shells) best. Maximum individual production amounted to 26.8 g shell-free wet mass (SFWM) at 115 mm shell length. Based on a size-frequency distribution derived from commercial catches, annual mortality rate of Z. dufresnei was estimated to be 0.61 (± 0.21) year-1. © Springer-Verlag 2004.
author Giménez, Juliana
Penchaszadeh, Pablo Enrique
author_facet Giménez, Juliana
Penchaszadeh, Pablo Enrique
author_sort Giménez, Juliana
title Age, growth, and mortality of the prosobranch Zidona dufresnei (Donovan, 1823) in the Mar del Plata area, south-western Atlantic Ocean
title_short Age, growth, and mortality of the prosobranch Zidona dufresnei (Donovan, 1823) in the Mar del Plata area, south-western Atlantic Ocean
title_full Age, growth, and mortality of the prosobranch Zidona dufresnei (Donovan, 1823) in the Mar del Plata area, south-western Atlantic Ocean
title_fullStr Age, growth, and mortality of the prosobranch Zidona dufresnei (Donovan, 1823) in the Mar del Plata area, south-western Atlantic Ocean
title_full_unstemmed Age, growth, and mortality of the prosobranch Zidona dufresnei (Donovan, 1823) in the Mar del Plata area, south-western Atlantic Ocean
title_sort age, growth, and mortality of the prosobranch zidona dufresnei (donovan, 1823) in the mar del plata area, south-western atlantic ocean
publishDate 2004
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253162_v145_n4_p707_Gimenez
http://hdl.handle.net/20.500.12110/paper_00253162_v145_n4_p707_Gimenez
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AT penchaszadehpabloenrique agegrowthandmortalityoftheprosobranchzidonadufresneidonovan1823inthemardelplataareasouthwesternatlanticocean
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