Size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (Mollusca: Bivalvia) from Florida Keys, U.S.A.

Gonads in the tropical lucinid bivalves Ctena orbiculata, Codakia orbicularis, and Lucina pensylvanica are located in the cephalopodial mass above the foot and behind the gills. Age estimates for Lucina pensylvanica suggest that individuals less than one year old are immature, as also is C. orbicula...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Bigatti, Gregorio
Publicado:	2004
Materias:	Lucinidae Oocytes Reproduction Sperm Bivalvia Codakia orbicularis Ctena orbiculata Lucina pensylvanica Mollusca
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v46_n2_p417_Bigatti http://hdl.handle.net/20.500.12110/paper_00762997_v46_n2_p417_Bigatti
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00762997_v46_n2_p417_Bigatti
record_format	dspace
spelling	paper:paper_00762997_v46_n2_p417_Bigatti2023-06-08T15:07:16Z Size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (Mollusca: Bivalvia) from Florida Keys, U.S.A. Bigatti, Gregorio Lucinidae Oocytes Reproduction Sperm Bivalvia Codakia orbicularis Ctena orbiculata Lucina pensylvanica Lucinidae Mollusca Gonads in the tropical lucinid bivalves Ctena orbiculata, Codakia orbicularis, and Lucina pensylvanica are located in the cephalopodial mass above the foot and behind the gills. Age estimates for Lucina pensylvanica suggest that individuals less than one year old are immature, as also is C. orbicularis, and that both males and females mature at two years. For Ctena orbiculata, we have no age data, but we consider that this species may also have early development. In July 2002 when water temperatures were high, mature individuals of all three species were spawning or in resorption, and oocyte envelopes were present. Parasites were found in the digestive diverticula of C. orbiculata and L. pensylvanica. External ultrastructure of the spermatozoon shows differences between the three species. Codakia orbicularis and L. pensylvanica have a long-headed spermatozoa, whereas Ctena orbiculata has a middle-size head. Codakia orbicularis possesses a flagellum with a lateral undulating membrane, absent from the two other species. Fil:Bigatti, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v46_n2_p417_Bigatti http://hdl.handle.net/20.500.12110/paper_00762997_v46_n2_p417_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	Lucinidae Oocytes Reproduction Sperm Bivalvia Codakia orbicularis Ctena orbiculata Lucina pensylvanica Lucinidae Mollusca
spellingShingle	Lucinidae Oocytes Reproduction Sperm Bivalvia Codakia orbicularis Ctena orbiculata Lucina pensylvanica Lucinidae Mollusca Bigatti, Gregorio Size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (Mollusca: Bivalvia) from Florida Keys, U.S.A.
topic_facet	Lucinidae Oocytes Reproduction Sperm Bivalvia Codakia orbicularis Ctena orbiculata Lucina pensylvanica Lucinidae Mollusca
description	Gonads in the tropical lucinid bivalves Ctena orbiculata, Codakia orbicularis, and Lucina pensylvanica are located in the cephalopodial mass above the foot and behind the gills. Age estimates for Lucina pensylvanica suggest that individuals less than one year old are immature, as also is C. orbicularis, and that both males and females mature at two years. For Ctena orbiculata, we have no age data, but we consider that this species may also have early development. In July 2002 when water temperatures were high, mature individuals of all three species were spawning or in resorption, and oocyte envelopes were present. Parasites were found in the digestive diverticula of C. orbiculata and L. pensylvanica. External ultrastructure of the spermatozoon shows differences between the three species. Codakia orbicularis and L. pensylvanica have a long-headed spermatozoa, whereas Ctena orbiculata has a middle-size head. Codakia orbicularis possesses a flagellum with a lateral undulating membrane, absent from the two other species.
author	Bigatti, Gregorio
author_facet	Bigatti, Gregorio
author_sort	Bigatti, Gregorio
title	Size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (Mollusca: Bivalvia) from Florida Keys, U.S.A.
title_short	Size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (Mollusca: Bivalvia) from Florida Keys, U.S.A.
title_full	Size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (Mollusca: Bivalvia) from Florida Keys, U.S.A.
title_fullStr	Size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (Mollusca: Bivalvia) from Florida Keys, U.S.A.
title_full_unstemmed	Size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (Mollusca: Bivalvia) from Florida Keys, U.S.A.
title_sort	size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (mollusca: bivalvia) from florida keys, u.s.a.
publishDate	2004
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v46_n2_p417_Bigatti http://hdl.handle.net/20.500.12110/paper_00762997_v46_n2_p417_Bigatti
work_keys_str_mv	AT bigattigregorio sizeatfirstmaturityoocyteenvelopesandexternalmorphologyofsperminthreespeciesoflucinidaemolluscabivalviafromfloridakeysusa
_version_	1768545640021753856

Size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (Mollusca: Bivalvia) from Florida Keys, U.S.A.

Ejemplares similares