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Abstract:

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.

Registro:

Documento: Artículo
Título:Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela)
Autor:Bigatti, G.; Miloslavich, P.; Penchaszadeh, P.E.
Filiación:CONICET-Facultad de Ciencias Exactas Y Naturales, UBA and Museo Argentino de Ciencias Naturales, Avenida Ángel Gallardo 470, Buenos Aires, Argentina
Departamento de Estudios Ambientales, Universidad Simón Bolívar, Apartado Postal 89000, Caracas 1080, Venezuela
Idioma: Inglés
Palabras clave:Invasive bivalves; Margarita Island; Reproduction; Size at sexual maturity; South America; Bivalvia; Invertebrata; Mollusca; Musculista senhousia; Mytilidae; Perna viridis
Año:2005
Volumen:20
Número:1-2
Página de inicio:65
Página de fin:69
Título revista:American Malacological Bulletin
Título revista abreviado:Am. Malacol. Bull.
ISSN:07402783
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07402783_v20_n1-2_p65_Bigatti

Referencias:

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Citas:

---------- APA ----------
Bigatti, G., Miloslavich, P. & Penchaszadeh, P.E. (2005) . Sexual differentiation and size at first maturity of the invasive mussel Perna viridis (Linnaeus, 1758) (Mollusca: Mytilidae) at La Restinga Lagoon (Margarita Island, Venezuela). American Malacological Bulletin, 20(1-2), 65-69.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07402783_v20_n1-2_p65_Bigatti [ ]
---------- CHICAGO ----------
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)" . American Malacological Bulletin 20, no. 1-2 (2005) : 65-69.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07402783_v20_n1-2_p65_Bigatti [ ]
---------- MLA ----------
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)" . American Malacological Bulletin, vol. 20, no. 1-2, 2005, pp. 65-69.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07402783_v20_n1-2_p65_Bigatti [ ]
---------- VANCOUVER ----------
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). Am. Malacol. Bull. 2005;20(1-2):65-69.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07402783_v20_n1-2_p65_Bigatti [ ]