Gonad Development During the Early Life of Octopus maya (Mollusca: Cephalopoda)
Gonad development during the early life of Octopus maya is described in terms of histological, morphometric, oocytes growth, and somatic-oocyte relationship data obtained from octopus cultured at the UMDI-UNAM, in Sisal, Yucatan, Mexico. This study is the first publication on gonad development durin...
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Marine Biological Laboratory
2009
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Online Access: | https://oceanrep.geomar.de/id/eprint/53590/ https://oceanrep.geomar.de/id/eprint/53590/1/4557.pdf https://www.journals.uchicago.edu/doi/pdf/10.1086/BBLv216n1p94 https://doi.org/10.1086/BBLv216n1p94 |
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ftoceanrep:oai:oceanrep.geomar.de:53590 2023-05-15T16:01:31+02:00 Gonad Development During the Early Life of Octopus maya (Mollusca: Cephalopoda) Avila-Poveda, Omar Hernando Colin-Flores, Rafael Francisco Rosas, Carlos 2009 text https://oceanrep.geomar.de/id/eprint/53590/ https://oceanrep.geomar.de/id/eprint/53590/1/4557.pdf https://www.journals.uchicago.edu/doi/pdf/10.1086/BBLv216n1p94 https://doi.org/10.1086/BBLv216n1p94 en eng Marine Biological Laboratory https://oceanrep.geomar.de/id/eprint/53590/1/4557.pdf Avila-Poveda, O. H., Colin-Flores, R. F. and Rosas, C. (2009) Gonad Development During the Early Life of Octopus maya (Mollusca: Cephalopoda). The Biological Bulletin, 216 (1). pp. 94-102. DOI 10.1086/BBLv216n1p94 <https://doi.org/10.1086/BBLv216n1p94>. doi:10.1086/BBLv216n1p94 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2009 ftoceanrep https://doi.org/10.1086/BBLv216n1p94 2023-04-07T15:58:01Z Gonad development during the early life of Octopus maya is described in terms of histological, morphometric, oocytes growth, and somatic-oocyte relationship data obtained from octopus cultured at the UMDI-UNAM, in Sisal, Yucatan, Mexico. This study is the first publication on gonad development during the early life of Octopus maya. A total of 83 O. maya specimens were used; their sizes ranged from 6.5 to 76 mm of total length (TL), 4 to 28 mm of dorsal mantle length (DML), 2.5 to 20 mm of ventral mantle length (VML), and 0.0180 to 7.2940 g of fixed body weight (fBW). Animals were weighed and measured only after preservation. A loss of 10% of living weight was estimated for juvenile octopuses after formalin preservation. The relation of length to weight (VML, DML, TL/fBW) pooled for both sexes had a strong positive correlation (r), as shown by a potential power function that was quite close to 1. Compound images were produced from numerous microscopic fields. The histological examination revealed that, 4 months after hatching, male octopus (24.5 mm DML and 7.2940 g fBW) were in gonad stages 2 (maturing) to 3 (mature), with spermatogonia and spermatocytes in the tubule wall and abundant spermatids and spermatozoa in the central lumen of the seminiferous tubules, suggesting the occurrence of different phases of gonad development at different maturity stages. In contrast, females (22.5 mm DML and 4.8210 g fBW) at the same time since hatching were immature (stage 1), with many oogonia, few oocytes, and germinal epithelium. This suggests that males reach maturity earlier than females, indicating a probable onset of maturity for males at around 4 months of culture or 8 g of wet body weight. Our results indicate the possibility that the size-at-weight can be recognized early with a degree of certainty that allows the sexes to be separated for culture purposes; but more detailed studies on reproduction in relation to endocrinology and nutrition are needed. Article in Journal/Newspaper DML OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) The Biological Bulletin 216 1 94 102 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Gonad development during the early life of Octopus maya is described in terms of histological, morphometric, oocytes growth, and somatic-oocyte relationship data obtained from octopus cultured at the UMDI-UNAM, in Sisal, Yucatan, Mexico. This study is the first publication on gonad development during the early life of Octopus maya. A total of 83 O. maya specimens were used; their sizes ranged from 6.5 to 76 mm of total length (TL), 4 to 28 mm of dorsal mantle length (DML), 2.5 to 20 mm of ventral mantle length (VML), and 0.0180 to 7.2940 g of fixed body weight (fBW). Animals were weighed and measured only after preservation. A loss of 10% of living weight was estimated for juvenile octopuses after formalin preservation. The relation of length to weight (VML, DML, TL/fBW) pooled for both sexes had a strong positive correlation (r), as shown by a potential power function that was quite close to 1. Compound images were produced from numerous microscopic fields. The histological examination revealed that, 4 months after hatching, male octopus (24.5 mm DML and 7.2940 g fBW) were in gonad stages 2 (maturing) to 3 (mature), with spermatogonia and spermatocytes in the tubule wall and abundant spermatids and spermatozoa in the central lumen of the seminiferous tubules, suggesting the occurrence of different phases of gonad development at different maturity stages. In contrast, females (22.5 mm DML and 4.8210 g fBW) at the same time since hatching were immature (stage 1), with many oogonia, few oocytes, and germinal epithelium. This suggests that males reach maturity earlier than females, indicating a probable onset of maturity for males at around 4 months of culture or 8 g of wet body weight. Our results indicate the possibility that the size-at-weight can be recognized early with a degree of certainty that allows the sexes to be separated for culture purposes; but more detailed studies on reproduction in relation to endocrinology and nutrition are needed. |
format |
Article in Journal/Newspaper |
author |
Avila-Poveda, Omar Hernando Colin-Flores, Rafael Francisco Rosas, Carlos |
spellingShingle |
Avila-Poveda, Omar Hernando Colin-Flores, Rafael Francisco Rosas, Carlos Gonad Development During the Early Life of Octopus maya (Mollusca: Cephalopoda) |
author_facet |
Avila-Poveda, Omar Hernando Colin-Flores, Rafael Francisco Rosas, Carlos |
author_sort |
Avila-Poveda, Omar Hernando |
title |
Gonad Development During the Early Life of Octopus maya (Mollusca: Cephalopoda) |
title_short |
Gonad Development During the Early Life of Octopus maya (Mollusca: Cephalopoda) |
title_full |
Gonad Development During the Early Life of Octopus maya (Mollusca: Cephalopoda) |
title_fullStr |
Gonad Development During the Early Life of Octopus maya (Mollusca: Cephalopoda) |
title_full_unstemmed |
Gonad Development During the Early Life of Octopus maya (Mollusca: Cephalopoda) |
title_sort |
gonad development during the early life of octopus maya (mollusca: cephalopoda) |
publisher |
Marine Biological Laboratory |
publishDate |
2009 |
url |
https://oceanrep.geomar.de/id/eprint/53590/ https://oceanrep.geomar.de/id/eprint/53590/1/4557.pdf https://www.journals.uchicago.edu/doi/pdf/10.1086/BBLv216n1p94 https://doi.org/10.1086/BBLv216n1p94 |
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DML |
genre_facet |
DML |
op_relation |
https://oceanrep.geomar.de/id/eprint/53590/1/4557.pdf Avila-Poveda, O. H., Colin-Flores, R. F. and Rosas, C. (2009) Gonad Development During the Early Life of Octopus maya (Mollusca: Cephalopoda). The Biological Bulletin, 216 (1). pp. 94-102. DOI 10.1086/BBLv216n1p94 <https://doi.org/10.1086/BBLv216n1p94>. doi:10.1086/BBLv216n1p94 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1086/BBLv216n1p94 |
container_title |
The Biological Bulletin |
container_volume |
216 |
container_issue |
1 |
container_start_page |
94 |
op_container_end_page |
102 |
_version_ |
1766397334320578560 |