Sex Changes and Gonad Maturity of Rivulated Parrotfish Scarus rivulatus (Valenciennes, 1840) from Seribu Islands, Indonesia
Parrotfish (Scarus rivulatus) is a species that can undergo sex change at a certain age and size (hermaphrodite protogynous). This study aims to analyze the process of sex change based on body color and gonadal tissue changes, as well as the gonadal development of the fish. Sampling was conducted mo...
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Diponegoro University; Association of Indonesian Coastal Management Experts
2023-06-01
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| Series: | Ilmu Kelautan |
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| Online Access: | https://ejournal.undip.ac.id/index.php/ijms/article/view/52977 |
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| author | Asri Yanti Sulistiono Sulistiono Ali Mashar Sonja Kleinertz |
| author_facet | Asri Yanti Sulistiono Sulistiono Ali Mashar Sonja Kleinertz |
| author_sort | Asri Yanti |
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| description | Parrotfish (Scarus rivulatus) is a species that can undergo sex change at a certain age and size (hermaphrodite protogynous). This study aims to analyze the process of sex change based on body color and gonadal tissue changes, as well as the gonadal development of the fish. Sampling was conducted monthly from January to September 2022. Fish samples were collected from fishermen in Seribu Islands. The parameters observed were sex, gonad maturity stage, body color changes, and anatomy and histology of the gonad. The samples were 1605 individuals, consisted of 831 females, 309 primary males (initial phase of males), and 465 secondary males (terminal phase of males). The total length of these fish ranged 8.8- 22.4 cm (females), 10.5-22.6 cm (primary males of males), and 15.1-28.1 cm (secondary males). Morphological differences between female fish, primary males, and secondary males are generally showed in body size, fin size, and body coloration. The histological analysis results of the gonads of primary male fish was indicated by the presence of residual perinucleolar oocytes in the layer of the gonads that coexist with sperm tissue. The body size of first mature gonads was 13.0 cm (female), 16.6 cm (primary male), and 17.6 cm (secondary male). Gonadal maturity stage (GMS) III and IV dominated each observation time. Hence, it was suspected that the fish spawned throughout the year. However, based on the distribution of the GMS, there was an increase in reproductive activity in January-March and July-September, with peak spawning in March and September. |
| format | Article |
| id | doaj-art-2ec9d444c8484f698cdd51676eda4f5b |
| institution | Kabale University |
| issn | 0853-7291 2406-7598 |
| language | English |
| publishDate | 2023-06-01 |
| publisher | Diponegoro University; Association of Indonesian Coastal Management Experts |
| record_format | Article |
| series | Ilmu Kelautan |
| spelling | doaj-art-2ec9d444c8484f698cdd51676eda4f5b2025-08-20T03:29:02ZengDiponegoro University; Association of Indonesian Coastal Management ExpertsIlmu Kelautan0853-72912406-75982023-06-0128220321610.14710/ik.ijms.28.2.203-21622225Sex Changes and Gonad Maturity of Rivulated Parrotfish Scarus rivulatus (Valenciennes, 1840) from Seribu Islands, IndonesiaAsri Yanti0Sulistiono Sulistiono1Ali Mashar2Sonja Kleinertz3Study Program of Aquatic Resources Management, Graduate Program, IPB University, IndonesiaDepartment of Aquatic Resource Management, Faculty of Fisheries and Marine Sciences, IPB University, IndonesiaDepartment of Aquatic Resource Management, Faculty of Fisheries and Marine Sciences, IPB University, IndonesiaMarine Ecology Department, Faculty of Biology and Chemistry, University of Bremen, IndonesiaParrotfish (Scarus rivulatus) is a species that can undergo sex change at a certain age and size (hermaphrodite protogynous). This study aims to analyze the process of sex change based on body color and gonadal tissue changes, as well as the gonadal development of the fish. Sampling was conducted monthly from January to September 2022. Fish samples were collected from fishermen in Seribu Islands. The parameters observed were sex, gonad maturity stage, body color changes, and anatomy and histology of the gonad. The samples were 1605 individuals, consisted of 831 females, 309 primary males (initial phase of males), and 465 secondary males (terminal phase of males). The total length of these fish ranged 8.8- 22.4 cm (females), 10.5-22.6 cm (primary males of males), and 15.1-28.1 cm (secondary males). Morphological differences between female fish, primary males, and secondary males are generally showed in body size, fin size, and body coloration. The histological analysis results of the gonads of primary male fish was indicated by the presence of residual perinucleolar oocytes in the layer of the gonads that coexist with sperm tissue. The body size of first mature gonads was 13.0 cm (female), 16.6 cm (primary male), and 17.6 cm (secondary male). Gonadal maturity stage (GMS) III and IV dominated each observation time. Hence, it was suspected that the fish spawned throughout the year. However, based on the distribution of the GMS, there was an increase in reproductive activity in January-March and July-September, with peak spawning in March and September.https://ejournal.undip.ac.id/index.php/ijms/article/view/52977parrotfishsex changegonad maturity |
| spellingShingle | Asri Yanti Sulistiono Sulistiono Ali Mashar Sonja Kleinertz Sex Changes and Gonad Maturity of Rivulated Parrotfish Scarus rivulatus (Valenciennes, 1840) from Seribu Islands, Indonesia Ilmu Kelautan parrotfish sex change gonad maturity |
| title | Sex Changes and Gonad Maturity of Rivulated Parrotfish Scarus rivulatus (Valenciennes, 1840) from Seribu Islands, Indonesia |
| title_full | Sex Changes and Gonad Maturity of Rivulated Parrotfish Scarus rivulatus (Valenciennes, 1840) from Seribu Islands, Indonesia |
| title_fullStr | Sex Changes and Gonad Maturity of Rivulated Parrotfish Scarus rivulatus (Valenciennes, 1840) from Seribu Islands, Indonesia |
| title_full_unstemmed | Sex Changes and Gonad Maturity of Rivulated Parrotfish Scarus rivulatus (Valenciennes, 1840) from Seribu Islands, Indonesia |
| title_short | Sex Changes and Gonad Maturity of Rivulated Parrotfish Scarus rivulatus (Valenciennes, 1840) from Seribu Islands, Indonesia |
| title_sort | sex changes and gonad maturity of rivulated parrotfish scarus rivulatus valenciennes 1840 from seribu islands indonesia |
| topic | parrotfish sex change gonad maturity |
| url | https://ejournal.undip.ac.id/index.php/ijms/article/view/52977 |
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