Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela)

The Asian green mussel Perna viridis was first recorded in the Americas in 1992 at Trinidad Island. In 1995 it was observed in the mainland coast of South America at Sucre State (Venezuela) and in 1998 at La Restinga Lagoon, Margarita Island, Venezuela. We studied the size at sexual differentiation,...

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Autores principales:	Bigatti, G., Miloslavich, P., Penchaszadeh, P.E.
Formato:	JOUR
Lenguaje:	English
Materias:	Invasive bivalves Margarita Island Reproduction Size at sexual maturity South America Bivalvia Invertebrata Mollusca Musculista senhousia Mytilidae Perna viridis
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_07402783_v20_n1-2_p65_Bigatti
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_07402783_v20_n1-2_p65_Bigatti2023-10-03T15:38:08Z Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela) Bigatti, G. Miloslavich, P. Penchaszadeh, P.E. Invasive bivalves Margarita Island Reproduction Size at sexual maturity South America Bivalvia Invertebrata Mollusca Musculista senhousia Mytilidae Perna viridis The Asian green mussel Perna viridis was first recorded in the Americas in 1992 at Trinidad Island. In 1995 it was observed in the mainland coast of South America at Sucre State (Venezuela) and in 1998 at La Restinga Lagoon, Margarita Island, Venezuela. We studied the size at sexual differentiation, size at first maturity, and gametogenesis of P. viridis from La Restinga Lagoon using histological sections. One hundred specimens of P. viridis between 8 and 91.2 mm in total shell length were examined. No gonadal development was observed in individuals smaller than 18 mm. Sexual differentiation began at 20 mm with incipient follicular formation. Specimens larger than 25.0 mm had well-developed gonads at different stages of maturation. Size at first maturity was larger than previously reported at other localities. Because the lagunar mangrove system is permanently open to the sea, larval supply could come either from outside or inside the Lagoon, assuring the recruitment of new spat and the dispersal of the species. The introduction of this invasive species into the Lagoon has increased the available hard substrata for settlement of sessile invertebrates. Fil:Bigatti, G. 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_07402783_v20_n1-2_p65_Bigatti
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	Invasive bivalves Margarita Island Reproduction Size at sexual maturity South America Bivalvia Invertebrata Mollusca Musculista senhousia Mytilidae Perna viridis
spellingShingle	Invasive bivalves Margarita Island Reproduction Size at sexual maturity South America Bivalvia Invertebrata Mollusca Musculista senhousia Mytilidae Perna viridis Bigatti, G. Miloslavich, P. Penchaszadeh, P.E. Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela)
topic_facet	Invasive bivalves Margarita Island Reproduction Size at sexual maturity South America Bivalvia Invertebrata Mollusca Musculista senhousia Mytilidae Perna viridis
description	The Asian green mussel Perna viridis was first recorded in the Americas in 1992 at Trinidad Island. In 1995 it was observed in the mainland coast of South America at Sucre State (Venezuela) and in 1998 at La Restinga Lagoon, Margarita Island, Venezuela. We studied the size at sexual differentiation, size at first maturity, and gametogenesis of P. viridis from La Restinga Lagoon using histological sections. One hundred specimens of P. viridis between 8 and 91.2 mm in total shell length were examined. No gonadal development was observed in individuals smaller than 18 mm. Sexual differentiation began at 20 mm with incipient follicular formation. Specimens larger than 25.0 mm had well-developed gonads at different stages of maturation. Size at first maturity was larger than previously reported at other localities. Because the lagunar mangrove system is permanently open to the sea, larval supply could come either from outside or inside the Lagoon, assuring the recruitment of new spat and the dispersal of the species. The introduction of this invasive species into the Lagoon has increased the available hard substrata for settlement of sessile invertebrates.
format	JOUR
author	Bigatti, G. Miloslavich, P. Penchaszadeh, P.E.
author_facet	Bigatti, G. Miloslavich, P. Penchaszadeh, P.E.
author_sort	Bigatti, G.
title	Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela)
title_short	Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela)
title_full	Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela)
title_fullStr	Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela)
title_full_unstemmed	Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela)
title_sort	sexual differentiation and size at first maturity of the invasive mussel perna viridis (linnaeus, 1758) (mollusca: mytilidae) at la restinga lagoon (margarita island, venezuela)
url	http://hdl.handle.net/20.500.12110/paper_07402783_v20_n1-2_p65_Bigatti
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Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela)

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