Reproductive biology of the mutton hamlet on the coast of Pernambuco, northeastern Brazil
This paper focuses on the reproductive biology of the Mutton Hamlet, Alphestes afer, a fish belonging to the family Epinephelidae, and aims to provide information on the main reproductive parameters of the species on the north coast of the state of Pernambuco, northeastern Brazil. From a total of 78...
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2019-07-01
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| Series: | Neotropical Biology and Conservation |
| Online Access: | https://neotropical.pensoft.net/article/37601/download/pdf/ |
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| author | Maria Ester Ribeiro Simoni Edson Bortoletto Garciov Filho Paulo Guilherme Vasconcelos de Oliveira Mariana Gomes do Rêgo Fábio Hissa Vieira Hazin Paulo Travassos |
| author_facet | Maria Ester Ribeiro Simoni Edson Bortoletto Garciov Filho Paulo Guilherme Vasconcelos de Oliveira Mariana Gomes do Rêgo Fábio Hissa Vieira Hazin Paulo Travassos |
| author_sort | Maria Ester Ribeiro Simoni |
| collection | DOAJ |
| description | This paper focuses on the reproductive biology of the Mutton Hamlet, Alphestes afer, a fish belonging to the family Epinephelidae, and aims to provide information on the main reproductive parameters of the species on the north coast of the state of Pernambuco, northeastern Brazil. From a total of 783 individuals, collected between March 2007 and June 2010, and from February to November 2014, the gonads of 322 fishes (235 females and 87 males) were analyzed, for the identification of sex and maturational stages. Females were more abundant and larger than males, with a sex ratio of 2.4 females: 1 male, during the reproduction season. The size at first maturity (L50) was estimated at 16.8 cm total length for females, and 16.2 cm for males. The gonadosomatic index (GSI) indicated that a reproductive cycle occurs all year round, while reproduction takes place from June to November. The fecundity of Alphestes afer ranged from 105,317 to 270,192 oocytes, averaging 173,458 oocytes. The females are more abundant than males due to the process of protogyny and also because individuals are regularly captured at growth stages above the L50, being a positive aspect for the sustainability of the fishery. According to the GSI, the species presents a split-type spawning with two peaks occurring throughout the year. |
| first_indexed | 2024-04-13T16:21:12Z |
| format | Article |
| id | doaj.art-cb3b7c8538824991a6f53bef17dce864 |
| institution | Directory Open Access Journal |
| issn | 2236-3777 |
| language | English |
| last_indexed | 2024-04-13T16:21:12Z |
| publishDate | 2019-07-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | Neotropical Biology and Conservation |
| spelling | doaj.art-cb3b7c8538824991a6f53bef17dce8642022-12-22T02:39:55ZengPensoft PublishersNeotropical Biology and Conservation2236-37772019-07-0114215716810.3897/neotropical.14.e3760137601Reproductive biology of the mutton hamlet on the coast of Pernambuco, northeastern BrazilMaria Ester Ribeiro Simoni0Edson Bortoletto Garciov Filho1Paulo Guilherme Vasconcelos de Oliveira2Mariana Gomes do Rêgo3Fábio Hissa Vieira Hazin4Paulo Travassos5Universidade Federal Rural de PernambucoUniversidade Federal Rural de PernambucoUniversidade Federal Rural de PernambucoUniversidade Federal Rural de PernambucoUniversidade Federal Rural de PernambucoUniversidade Federal Rural de PernambucoThis paper focuses on the reproductive biology of the Mutton Hamlet, Alphestes afer, a fish belonging to the family Epinephelidae, and aims to provide information on the main reproductive parameters of the species on the north coast of the state of Pernambuco, northeastern Brazil. From a total of 783 individuals, collected between March 2007 and June 2010, and from February to November 2014, the gonads of 322 fishes (235 females and 87 males) were analyzed, for the identification of sex and maturational stages. Females were more abundant and larger than males, with a sex ratio of 2.4 females: 1 male, during the reproduction season. The size at first maturity (L50) was estimated at 16.8 cm total length for females, and 16.2 cm for males. The gonadosomatic index (GSI) indicated that a reproductive cycle occurs all year round, while reproduction takes place from June to November. The fecundity of Alphestes afer ranged from 105,317 to 270,192 oocytes, averaging 173,458 oocytes. The females are more abundant than males due to the process of protogyny and also because individuals are regularly captured at growth stages above the L50, being a positive aspect for the sustainability of the fishery. According to the GSI, the species presents a split-type spawning with two peaks occurring throughout the year.https://neotropical.pensoft.net/article/37601/download/pdf/ |
| spellingShingle | Maria Ester Ribeiro Simoni Edson Bortoletto Garciov Filho Paulo Guilherme Vasconcelos de Oliveira Mariana Gomes do Rêgo Fábio Hissa Vieira Hazin Paulo Travassos Reproductive biology of the mutton hamlet on the coast of Pernambuco, northeastern Brazil Neotropical Biology and Conservation |
| title | Reproductive biology of the mutton hamlet on the coast of Pernambuco, northeastern Brazil |
| title_full | Reproductive biology of the mutton hamlet on the coast of Pernambuco, northeastern Brazil |
| title_fullStr | Reproductive biology of the mutton hamlet on the coast of Pernambuco, northeastern Brazil |
| title_full_unstemmed | Reproductive biology of the mutton hamlet on the coast of Pernambuco, northeastern Brazil |
| title_short | Reproductive biology of the mutton hamlet on the coast of Pernambuco, northeastern Brazil |
| title_sort | reproductive biology of the mutton hamlet on the coast of pernambuco northeastern brazil |
| url | https://neotropical.pensoft.net/article/37601/download/pdf/ |
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