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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Autores principales: Giménez, J., Brey, T., Mackensen, A., Penchaszadeh, P.E.
Formato: JOUR
Materias:
age
growth
mortality
population dynamics
snail
Argentina
Atlantic Ocean
Buenos Aires [Argentina]
Mar del Plata
South America
Gastropoda
Acceso en línea: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 todo:paper_00253162_v145_n4_p707_Gimenez
record_format dspace
spelling todo:paper_00253162_v145_n4_p707_Gimenez2023-10-03T14:35:54Z Age, growth, and mortality of the prosobranch Zidona dufresnei (Donovan, 1823) in the Mar del Plata area, south-western Atlantic Ocean Giménez, J. Brey, T. Mackensen, A. Penchaszadeh, P.E. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, J.
Brey, T.
Mackensen, A.
Penchaszadeh, P.E.
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.
format JOUR
author Giménez, J.
Brey, T.
Mackensen, A.
Penchaszadeh, P.E.
author_facet Giménez, J.
Brey, T.
Mackensen, A.
Penchaszadeh, P.E.
author_sort Giménez, J.
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
url http://hdl.handle.net/20.500.12110/paper_00253162_v145_n4_p707_Gimenez
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AT breyt agegrowthandmortalityoftheprosobranchzidonadufresneidonovan1823inthemardelplataareasouthwesternatlanticocean
AT mackensena agegrowthandmortalityoftheprosobranchzidonadufresneidonovan1823inthemardelplataareasouthwesternatlanticocean
AT penchaszadehpe agegrowthandmortalityoftheprosobranchzidonadufresneidonovan1823inthemardelplataareasouthwesternatlanticocean
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