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...
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I28-R145-paper_00762997_v46_n2_p417_Bigatti_oai2020-10-19 Bigatti, G. Peharda, M. Taylor, J. 2004 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. application/pdf http://hdl.handle.net/20.500.12110/paper_00762997_v46_n2_p417_Bigatti info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Malacologia 2004;46(2):417-426 Lucinidae Oocytes Reproduction Sperm Bivalvia Codakia orbicularis Ctena orbiculata Lucina pensylvanica Lucinidae Mollusca Size at first maturity, oocyte envelopes and external morphology of sperm in three species of lucinidae (Mollusca: Bivalvia) from Florida Keys, U.S.A. info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00762997_v46_n2_p417_Bigatti_oai |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-145 |
collection |
Repositorio Digital de la Universidad de Buenos Aires (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, G. Peharda, M. Taylor, J. 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. |
format |
Artículo Artículo publishedVersion |
author |
Bigatti, G. Peharda, M. Taylor, J. |
author_facet |
Bigatti, G. Peharda, M. Taylor, J. |
author_sort |
Bigatti, G. |
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 |
http://hdl.handle.net/20.500.12110/paper_00762997_v46_n2_p417_Bigatti http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00762997_v46_n2_p417_Bigatti_oai |
work_keys_str_mv |
AT bigattig sizeatfirstmaturityoocyteenvelopesandexternalmorphologyofsperminthreespeciesoflucinidaemolluscabivalviafromfloridakeysusa AT pehardam sizeatfirstmaturityoocyteenvelopesandexternalmorphologyofsperminthreespeciesoflucinidaemolluscabivalviafromfloridakeysusa AT taylorj sizeatfirstmaturityoocyteenvelopesandexternalmorphologyofsperminthreespeciesoflucinidaemolluscabivalviafromfloridakeysusa |
_version_ |
1766026639905390592 |