Sexual reproduction of Nausithoe aurea (Scyphozoa, Coronatae). Gametogenesis, egg release, embryonic development, and gastrulation
The structure of the ovaries and testes of Nausithoe aurea, reared in the laboratory, is described to update the knowledge of coronate scyphomedusae gametogenesis and early development. The testis is similar to those of other scyphozoans. The organization of the ovary agrees with the description for...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2001-06-01
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| Series: | Scientia Marina |
| Subjects: | |
| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/647 |
| _version_ | 1819297588566818816 |
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| author | André C. Morandini Fábio L. da Silveira |
| author_facet | André C. Morandini Fábio L. da Silveira |
| author_sort | André C. Morandini |
| collection | DOAJ |
| description | The structure of the ovaries and testes of Nausithoe aurea, reared in the laboratory, is described to update the knowledge of coronate scyphomedusae gametogenesis and early development. The testis is similar to those of other scyphozoans. The organization of the ovary agrees with the description for other coronates, with free oocytes in the mesoglea. The oocytes develop in a limited region of the gastrodermis, and a maturation gradient is observed from this point on. Egg release, embryonic development, and gastrulation mode of Nausithoe aurea are also described. Egg production was continuous for 55 days, and the output of released eggs oscillated without observed cue. Cleavage was holoblastic and adequal, but after the 8-cell stage, the cleavage became pseudospiral. Gastrulation occurred through multipolar ingression and began 24 hours after fertilization. |
| first_indexed | 2024-12-24T05:16:24Z |
| format | Article |
| id | doaj.art-2a5d55619b72478f97fdc988364043f9 |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-24T05:16:24Z |
| publishDate | 2001-06-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-2a5d55619b72478f97fdc988364043f92022-12-21T17:13:33ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342001-06-0165213914910.3989/scimar.2001.65n2139641Sexual reproduction of Nausithoe aurea (Scyphozoa, Coronatae). Gametogenesis, egg release, embryonic development, and gastrulationAndré C. Morandini0Fábio L. da Silveira1Departamento de Zoologia, Instituto de Biociências, Universidade de São PauloDepartamento de Zoologia, Instituto de Biociências, Universidade de São PauloThe structure of the ovaries and testes of Nausithoe aurea, reared in the laboratory, is described to update the knowledge of coronate scyphomedusae gametogenesis and early development. The testis is similar to those of other scyphozoans. The organization of the ovary agrees with the description for other coronates, with free oocytes in the mesoglea. The oocytes develop in a limited region of the gastrodermis, and a maturation gradient is observed from this point on. Egg release, embryonic development, and gastrulation mode of Nausithoe aurea are also described. Egg production was continuous for 55 days, and the output of released eggs oscillated without observed cue. Cleavage was holoblastic and adequal, but after the 8-cell stage, the cleavage became pseudospiral. Gastrulation occurred through multipolar ingression and began 24 hours after fertilization.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/647scyphozoacoronataenausithoesexual reproductiongametogenesisembryonic developmentgastrulation |
| spellingShingle | André C. Morandini Fábio L. da Silveira Sexual reproduction of Nausithoe aurea (Scyphozoa, Coronatae). Gametogenesis, egg release, embryonic development, and gastrulation Scientia Marina scyphozoa coronatae nausithoe sexual reproduction gametogenesis embryonic development gastrulation |
| title | Sexual reproduction of Nausithoe aurea (Scyphozoa, Coronatae). Gametogenesis, egg release, embryonic development, and gastrulation |
| title_full | Sexual reproduction of Nausithoe aurea (Scyphozoa, Coronatae). Gametogenesis, egg release, embryonic development, and gastrulation |
| title_fullStr | Sexual reproduction of Nausithoe aurea (Scyphozoa, Coronatae). Gametogenesis, egg release, embryonic development, and gastrulation |
| title_full_unstemmed | Sexual reproduction of Nausithoe aurea (Scyphozoa, Coronatae). Gametogenesis, egg release, embryonic development, and gastrulation |
| title_short | Sexual reproduction of Nausithoe aurea (Scyphozoa, Coronatae). Gametogenesis, egg release, embryonic development, and gastrulation |
| title_sort | sexual reproduction of nausithoe aurea scyphozoa coronatae gametogenesis egg release embryonic development and gastrulation |
| topic | scyphozoa coronatae nausithoe sexual reproduction gametogenesis embryonic development gastrulation |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/647 |
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