Seasonal reproduction and sexual maturity in Odontocymbiola magellanica (Neogastropoda, Volutidae)

Members of Odontocymbiola magellanica (Volutidae, Odontocymbiolinae) inhabit Argentinean waters from 35°S to the Magallanes Strait. The reproductive biology of this potential fishery resource has not been studied before. Male individuals reach maturity at 80 mm and females at 90 mm, corresponding to...

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Detalles Bibliográficos
Autores principales: Bigatti, G., Marzinelli, E.M., Penchaszadeh, P.E.
Formato: JOUR
Materias:
Gastropods
Gonadal ultrastructure
Oviposition
Patagonia
Bursa (gastropod)
Gastropoda
Neogastropoda
Volutidae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10778306_v127_n3_p314_Bigatti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_10778306_v127_n3_p314_Bigatti2023-10-03T16:03:32Z Seasonal reproduction and sexual maturity in Odontocymbiola magellanica (Neogastropoda, Volutidae) Bigatti, G. Marzinelli, E.M. Penchaszadeh, P.E. Gastropods Gonadal ultrastructure Oviposition Patagonia Bursa (gastropod) Gastropoda Neogastropoda Volutidae Members of Odontocymbiola magellanica (Volutidae, Odontocymbiolinae) inhabit Argentinean waters from 35°S to the Magallanes Strait. The reproductive biology of this potential fishery resource has not been studied before. Male individuals reach maturity at 80 mm and females at 90 mm, corresponding to ∼7 and 8 years of age, respectively. Mating was observed in the field in all seasons and females possess live spermatozoa in the bursa copulatrix all year round, suggesting that living sperm can be preserved for several months. Major oviposition events occurred July (winter) to December (summer) during the 5 years sampled, as characterized by aggregation of females coincident with increasing photoperiod from winter to summer solstices, and not, apparently, by increase in water temperature. Males showed gametogenic activity throughout the year. Gamete resorption occurred in both sexes. Ultrastructural studies showed that oocytes are attached to companion cells, which enables cell-cell communication and provides support until evacuation; males showed normal sperm cells and two types of parasperms. If populations of O. magellanica are commercially exploited in the future, we propose a minimum catch size of 100 mm, and a ban on the collection of females and egg capsules during the reproductive season. © 2008, The Authors. Journal compilation © 2008, The American Microscopical Society, Inc. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10778306_v127_n3_p314_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 Gastropods
Gonadal ultrastructure
Oviposition
Patagonia
Bursa (gastropod)
Gastropoda
Neogastropoda
Volutidae
spellingShingle Gastropods
Gonadal ultrastructure
Oviposition
Patagonia
Bursa (gastropod)
Gastropoda
Neogastropoda
Volutidae
Bigatti, G.
Marzinelli, E.M.
Penchaszadeh, P.E.
Seasonal reproduction and sexual maturity in Odontocymbiola magellanica (Neogastropoda, Volutidae)
topic_facet Gastropods
Gonadal ultrastructure
Oviposition
Patagonia
Bursa (gastropod)
Gastropoda
Neogastropoda
Volutidae
description Members of Odontocymbiola magellanica (Volutidae, Odontocymbiolinae) inhabit Argentinean waters from 35°S to the Magallanes Strait. The reproductive biology of this potential fishery resource has not been studied before. Male individuals reach maturity at 80 mm and females at 90 mm, corresponding to ∼7 and 8 years of age, respectively. Mating was observed in the field in all seasons and females possess live spermatozoa in the bursa copulatrix all year round, suggesting that living sperm can be preserved for several months. Major oviposition events occurred July (winter) to December (summer) during the 5 years sampled, as characterized by aggregation of females coincident with increasing photoperiod from winter to summer solstices, and not, apparently, by increase in water temperature. Males showed gametogenic activity throughout the year. Gamete resorption occurred in both sexes. Ultrastructural studies showed that oocytes are attached to companion cells, which enables cell-cell communication and provides support until evacuation; males showed normal sperm cells and two types of parasperms. If populations of O. magellanica are commercially exploited in the future, we propose a minimum catch size of 100 mm, and a ban on the collection of females and egg capsules during the reproductive season. © 2008, The Authors. Journal compilation © 2008, The American Microscopical Society, Inc.
format JOUR
author Bigatti, G.
Marzinelli, E.M.
Penchaszadeh, P.E.
author_facet Bigatti, G.
Marzinelli, E.M.
Penchaszadeh, P.E.
author_sort Bigatti, G.
title Seasonal reproduction and sexual maturity in Odontocymbiola magellanica (Neogastropoda, Volutidae)
title_short Seasonal reproduction and sexual maturity in Odontocymbiola magellanica (Neogastropoda, Volutidae)
title_full Seasonal reproduction and sexual maturity in Odontocymbiola magellanica (Neogastropoda, Volutidae)
title_fullStr Seasonal reproduction and sexual maturity in Odontocymbiola magellanica (Neogastropoda, Volutidae)
title_full_unstemmed Seasonal reproduction and sexual maturity in Odontocymbiola magellanica (Neogastropoda, Volutidae)
title_sort seasonal reproduction and sexual maturity in odontocymbiola magellanica (neogastropoda, volutidae)
url http://hdl.handle.net/20.500.12110/paper_10778306_v127_n3_p314_Bigatti
work_keys_str_mv AT bigattig seasonalreproductionandsexualmaturityinodontocymbiolamagellanicaneogastropodavolutidae
AT marzinelliem seasonalreproductionandsexualmaturityinodontocymbiolamagellanicaneogastropodavolutidae
AT penchaszadehpe seasonalreproductionandsexualmaturityinodontocymbiolamagellanicaneogastropodavolutidae
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