Morphological and Morphometric Aspects of Crassostrea rhizophorae (Guilding, 1828) Oocytes in Three Stages of the Gonadal Cycle

Crassostrea rhizophorae (Guilding, 1828) is one of the tropical species of oysters cultivated on the Brazilian shore. Despite its high commercial value, there is no information on the gonadal characteristics during the reproductive stages of this species. The objective of this work was to analyze th...

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Autores principales:	Ferreira,M. A. P., Paixão,L. F., Alcântara-Neto,C. P., Santos,S. S. D., Rocha,R. M.
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2006
Materias:	Crassostrea Oocyte Gonad Morphology
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000400023
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spelling	oai:scielo:S0717-950220060004000232007-01-24Morphological and Morphometric Aspects of Crassostrea rhizophorae (Guilding, 1828) Oocytes in Three Stages of the Gonadal CycleFerreira,M. A. P.Paixão,L. F.Alcântara-Neto,C. P.Santos,S. S. D.Rocha,R. M. Crassostrea Oocyte Gonad Morphology Crassostrea rhizophorae (Guilding, 1828) is one of the tropical species of oysters cultivated on the Brazilian shore. Despite its high commercial value, there is no information on the gonadal characteristics during the reproductive stages of this species. The objective of this work was to analyze the morphology and morphometry of Crassostrea rhizophorae oocytes and follicles in three stages of the gonadal cycle. Were analized histological sections of gonads considering that the oocytes presented visible nuclei and nucleoli, it was observed three gonadal cycle stages: early gametogenesis, growth and maturation. In the early gametogenesis stage, follicles and oocytes presented diameters of 180.29 (± 41.91) and 18.66 (± 6.85) µm, respectively, and presence of large amount of connective tissue and previtellogenic oocyte. In the growth stage, follicles and oocytes presented diameters of 218.02 (± 43.19) and 25.92 (± 9.94) µm, respectively, this stage was characterized by a small amount of interfollicular connective tissue with vitellogenic oocyte predominate. In the maturation stage, follicles and oocytes presented diameters of 298.16 (± 99.24) and 35.27 (± 6.2) µm, respectively, and presence of large number of mature oocytes. We concluded that during culture Crassostrea rhizophorae tolerates the influence of intrinsic and extrinsic factors and does not undergo significant changes in reproductive activityinfo:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.24 n.3 20062006-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000400023en10.4067/S0717-95022006000400023
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Crassostrea Oocyte Gonad Morphology
spellingShingle	Crassostrea Oocyte Gonad Morphology Ferreira,M. A. P. Paixão,L. F. Alcântara-Neto,C. P. Santos,S. S. D. Rocha,R. M. Morphological and Morphometric Aspects of Crassostrea rhizophorae (Guilding, 1828) Oocytes in Three Stages of the Gonadal Cycle
description	Crassostrea rhizophorae (Guilding, 1828) is one of the tropical species of oysters cultivated on the Brazilian shore. Despite its high commercial value, there is no information on the gonadal characteristics during the reproductive stages of this species. The objective of this work was to analyze the morphology and morphometry of Crassostrea rhizophorae oocytes and follicles in three stages of the gonadal cycle. Were analized histological sections of gonads considering that the oocytes presented visible nuclei and nucleoli, it was observed three gonadal cycle stages: early gametogenesis, growth and maturation. In the early gametogenesis stage, follicles and oocytes presented diameters of 180.29 (± 41.91) and 18.66 (± 6.85) µm, respectively, and presence of large amount of connective tissue and previtellogenic oocyte. In the growth stage, follicles and oocytes presented diameters of 218.02 (± 43.19) and 25.92 (± 9.94) µm, respectively, this stage was characterized by a small amount of interfollicular connective tissue with vitellogenic oocyte predominate. In the maturation stage, follicles and oocytes presented diameters of 298.16 (± 99.24) and 35.27 (± 6.2) µm, respectively, and presence of large number of mature oocytes. We concluded that during culture Crassostrea rhizophorae tolerates the influence of intrinsic and extrinsic factors and does not undergo significant changes in reproductive activity
author	Ferreira,M. A. P. Paixão,L. F. Alcântara-Neto,C. P. Santos,S. S. D. Rocha,R. M.
author_facet	Ferreira,M. A. P. Paixão,L. F. Alcântara-Neto,C. P. Santos,S. S. D. Rocha,R. M.
author_sort	Ferreira,M. A. P.
title	Morphological and Morphometric Aspects of Crassostrea rhizophorae (Guilding, 1828) Oocytes in Three Stages of the Gonadal Cycle
title_short	Morphological and Morphometric Aspects of Crassostrea rhizophorae (Guilding, 1828) Oocytes in Three Stages of the Gonadal Cycle
title_full	Morphological and Morphometric Aspects of Crassostrea rhizophorae (Guilding, 1828) Oocytes in Three Stages of the Gonadal Cycle
title_fullStr	Morphological and Morphometric Aspects of Crassostrea rhizophorae (Guilding, 1828) Oocytes in Three Stages of the Gonadal Cycle
title_full_unstemmed	Morphological and Morphometric Aspects of Crassostrea rhizophorae (Guilding, 1828) Oocytes in Three Stages of the Gonadal Cycle
title_sort	morphological and morphometric aspects of crassostrea rhizophorae (guilding, 1828) oocytes in three stages of the gonadal cycle
publisher	Sociedad Chilena de Anatomía
publishDate	2006
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000400023
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Morphological and Morphometric Aspects of Crassostrea rhizophorae (Guilding, 1828) Oocytes in Three Stages of the Gonadal Cycle

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