Age, growth and mortality in the giant snail Adelomelon beckii (Broderip 1836) on the Argentinean shelf

The marine subtidal volutid snail Adelomelon beckii was studied in order to obtain their population dynamics, particularly on growth, age, mortality and production. Stable oxygen isotope ratios confirmed semiannual formation of internal growth marks. A von Bertalanffy growth model fitted 308 size-at...

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Autores principales: Arrighetti, F., Brey, T., Mackensen, A., Penchaszadeh, P.E.
Formato: JOUR
Lenguaje:English
Materias:
Age
Fisheries Management
Growth
Marine Gastropod
Mortality
Production
age structure
exploitation
fishery management
fishery production
fishing mortality
functional morphology
gastropod
growth modeling
growth rate
isotopic ratio
oxygen isotope
population dynamics
snail
stable isotope
subtidal environment
Argentine Shelf
Atlantic Ocean
Adelomelon
Gastropoda
Volutidae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_13851101_v65_n2_p219_Arrighetti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_13851101_v65_n2_p219_Arrighetti
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spelling todo:paper_13851101_v65_n2_p219_Arrighetti2023-10-03T16:12:05Z Age, growth and mortality in the giant snail Adelomelon beckii (Broderip 1836) on the Argentinean shelf Arrighetti, F. Brey, T. Mackensen, A. Penchaszadeh, P.E. Age Fisheries Management Growth Marine Gastropod Mortality Production age structure exploitation fishery management fishery production fishing mortality functional morphology gastropod growth modeling growth rate isotopic ratio oxygen isotope population dynamics snail stable isotope subtidal environment Argentine Shelf Atlantic Ocean Adelomelon Gastropoda Volutidae The marine subtidal volutid snail Adelomelon beckii was studied in order to obtain their population dynamics, particularly on growth, age, mortality and production. Stable oxygen isotope ratios confirmed semiannual formation of internal growth marks. A von Bertalanffy growth model fitted 308 size-at-age data pairs. A. beckii potential lifespan in Mar del Plata (Argentina) region is 29years, being rather long lived compared to other large gastropods. Total mortality Z and natural mortality M were calculated to be 0.210y-1 and 0.081y-1 respectively. Fishing mortality F amounts to 0.129y-1 corresponding to an exploitation rate E of 0.614, a value much beyond the optimum rate of 0.427. The current exploitation regime will be unsustainable in the long run unless a proper management approach establishes. © 2010. Fil:Arrighetti, F. 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 English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_13851101_v65_n2_p219_Arrighetti
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 Age
Fisheries Management
Growth
Marine Gastropod
Mortality
Production
age structure
exploitation
fishery management
fishery production
fishing mortality
functional morphology
gastropod
growth modeling
growth rate
isotopic ratio
oxygen isotope
population dynamics
snail
stable isotope
subtidal environment
Argentine Shelf
Atlantic Ocean
Adelomelon
Gastropoda
Volutidae
spellingShingle Age
Fisheries Management
Growth
Marine Gastropod
Mortality
Production
age structure
exploitation
fishery management
fishery production
fishing mortality
functional morphology
gastropod
growth modeling
growth rate
isotopic ratio
oxygen isotope
population dynamics
snail
stable isotope
subtidal environment
Argentine Shelf
Atlantic Ocean
Adelomelon
Gastropoda
Volutidae
Arrighetti, F.
Brey, T.
Mackensen, A.
Penchaszadeh, P.E.
Age, growth and mortality in the giant snail Adelomelon beckii (Broderip 1836) on the Argentinean shelf
topic_facet Age
Fisheries Management
Growth
Marine Gastropod
Mortality
Production
age structure
exploitation
fishery management
fishery production
fishing mortality
functional morphology
gastropod
growth modeling
growth rate
isotopic ratio
oxygen isotope
population dynamics
snail
stable isotope
subtidal environment
Argentine Shelf
Atlantic Ocean
Adelomelon
Gastropoda
Volutidae
description The marine subtidal volutid snail Adelomelon beckii was studied in order to obtain their population dynamics, particularly on growth, age, mortality and production. Stable oxygen isotope ratios confirmed semiannual formation of internal growth marks. A von Bertalanffy growth model fitted 308 size-at-age data pairs. A. beckii potential lifespan in Mar del Plata (Argentina) region is 29years, being rather long lived compared to other large gastropods. Total mortality Z and natural mortality M were calculated to be 0.210y-1 and 0.081y-1 respectively. Fishing mortality F amounts to 0.129y-1 corresponding to an exploitation rate E of 0.614, a value much beyond the optimum rate of 0.427. The current exploitation regime will be unsustainable in the long run unless a proper management approach establishes. © 2010.
format JOUR
author Arrighetti, F.
Brey, T.
Mackensen, A.
Penchaszadeh, P.E.
author_facet Arrighetti, F.
Brey, T.
Mackensen, A.
Penchaszadeh, P.E.
author_sort Arrighetti, F.
title Age, growth and mortality in the giant snail Adelomelon beckii (Broderip 1836) on the Argentinean shelf
title_short Age, growth and mortality in the giant snail Adelomelon beckii (Broderip 1836) on the Argentinean shelf
title_full Age, growth and mortality in the giant snail Adelomelon beckii (Broderip 1836) on the Argentinean shelf
title_fullStr Age, growth and mortality in the giant snail Adelomelon beckii (Broderip 1836) on the Argentinean shelf
title_full_unstemmed Age, growth and mortality in the giant snail Adelomelon beckii (Broderip 1836) on the Argentinean shelf
title_sort age, growth and mortality in the giant snail adelomelon beckii (broderip 1836) on the argentinean shelf
url http://hdl.handle.net/20.500.12110/paper_13851101_v65_n2_p219_Arrighetti
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AT mackensena agegrowthandmortalityinthegiantsnailadelomelonbeckiibroderip1836ontheargentineanshelf
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