Gametogenesis, seasonal reproduction and imposex of Adelomelon beckii (Neogastropoda: Volutidae) in Mar del Plata, Argentina

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Adelomelon beckii (Broderip, 1836) (Neogastropoda: Volutidae) is endemic to the western south Atlantic coast. It inhabits sandy bottoms in waters between 40 and 70 m deep and is one of the largest top benthic predators found in Mar del Plata, Argentina. The present study describes gametogenesis and...

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Detalles Bibliográficos
Autores principales: Arrighetti, F., Penchaszadeh, P.E.
Formato: JOUR
Materias:
Adelomelon beckii
Gametogenesis
Imposex
Reproductive cycle
Volutidae
Adelomelon
Gastropoda
Neogastropoda
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_18647782_v9_n1_p63_Arrighetti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_18647782_v9_n1_p63_Arrighetti
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spelling todo:paper_18647782_v9_n1_p63_Arrighetti2023-10-03T16:33:31Z Gametogenesis, seasonal reproduction and imposex of Adelomelon beckii (Neogastropoda: Volutidae) in Mar del Plata, Argentina Arrighetti, F. Penchaszadeh, P.E. Adelomelon beckii Gametogenesis Imposex Reproductive cycle Volutidae Adelomelon Gastropoda Neogastropoda Volutidae Adelomelon beckii (Broderip, 1836) (Neogastropoda: Volutidae) is endemic to the western south Atlantic coast. It inhabits sandy bottoms in waters between 40 and 70 m deep and is one of the largest top benthic predators found in Mar del Plata, Argentina. The present study describes gametogenesis and the reproductive cycle of this species. Oocytes developed in close association with follicle cells, which appear to play a role in yolk synthesis and oocyte resorption, providing the key functions of phagocytosis and intracellular digestion of degenerating oocytes. Spermatogenesis resembles that reported for other volutids. The reproductive cycle of A. beckii in Mar del Plata was studied over a period of 2 yr (September 2004 to August 2006). Gametic emission in males continued throughout the year while females showed 2 spawning periods: one during spring (September-November) and another during autumn (March-April). In females, this semi-annual pattern appears to be related to the seasonal variation in seawater temperature, coinciding with observations made in other volutes. In males, there was no relationship to variation in seawater temperature, an unusual pattern for a species from a temperate region. Imposex was described for the first time in this species. These data constitute baseline information for establishing appropriate and biologically based management and conservation strategies for this overexploited gastropod species. © Inter-Research 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 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_18647782_v9_n1_p63_Arrighetti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Adelomelon beckii
Gametogenesis
Imposex
Reproductive cycle
Volutidae
Adelomelon
Gastropoda
Neogastropoda
Volutidae
spellingShingle Adelomelon beckii
Gametogenesis
Imposex
Reproductive cycle
Volutidae
Adelomelon
Gastropoda
Neogastropoda
Volutidae
Arrighetti, F.
Penchaszadeh, P.E.
Gametogenesis, seasonal reproduction and imposex of Adelomelon beckii (Neogastropoda: Volutidae) in Mar del Plata, Argentina
topic_facet Adelomelon beckii
Gametogenesis
Imposex
Reproductive cycle
Volutidae
Adelomelon
Gastropoda
Neogastropoda
Volutidae
description Adelomelon beckii (Broderip, 1836) (Neogastropoda: Volutidae) is endemic to the western south Atlantic coast. It inhabits sandy bottoms in waters between 40 and 70 m deep and is one of the largest top benthic predators found in Mar del Plata, Argentina. The present study describes gametogenesis and the reproductive cycle of this species. Oocytes developed in close association with follicle cells, which appear to play a role in yolk synthesis and oocyte resorption, providing the key functions of phagocytosis and intracellular digestion of degenerating oocytes. Spermatogenesis resembles that reported for other volutids. The reproductive cycle of A. beckii in Mar del Plata was studied over a period of 2 yr (September 2004 to August 2006). Gametic emission in males continued throughout the year while females showed 2 spawning periods: one during spring (September-November) and another during autumn (March-April). In females, this semi-annual pattern appears to be related to the seasonal variation in seawater temperature, coinciding with observations made in other volutes. In males, there was no relationship to variation in seawater temperature, an unusual pattern for a species from a temperate region. Imposex was described for the first time in this species. These data constitute baseline information for establishing appropriate and biologically based management and conservation strategies for this overexploited gastropod species. © Inter-Research 2010.
format JOUR
author Arrighetti, F.
Penchaszadeh, P.E.
author_facet Arrighetti, F.
Penchaszadeh, P.E.
author_sort Arrighetti, F.
title Gametogenesis, seasonal reproduction and imposex of Adelomelon beckii (Neogastropoda: Volutidae) in Mar del Plata, Argentina
title_short Gametogenesis, seasonal reproduction and imposex of Adelomelon beckii (Neogastropoda: Volutidae) in Mar del Plata, Argentina
title_full Gametogenesis, seasonal reproduction and imposex of Adelomelon beckii (Neogastropoda: Volutidae) in Mar del Plata, Argentina
title_fullStr Gametogenesis, seasonal reproduction and imposex of Adelomelon beckii (Neogastropoda: Volutidae) in Mar del Plata, Argentina
title_full_unstemmed Gametogenesis, seasonal reproduction and imposex of Adelomelon beckii (Neogastropoda: Volutidae) in Mar del Plata, Argentina
title_sort gametogenesis, seasonal reproduction and imposex of adelomelon beckii (neogastropoda: volutidae) in mar del plata, argentina
url http://hdl.handle.net/20.500.12110/paper_18647782_v9_n1_p63_Arrighetti
work_keys_str_mv AT arrighettif gametogenesisseasonalreproductionandimposexofadelomelonbeckiineogastropodavolutidaeinmardelplataargentina
AT penchaszadehpe gametogenesisseasonalreproductionandimposexofadelomelonbeckiineogastropodavolutidaeinmardelplataargentina
_version_ 1782029141044887552

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