DIMORFISME SEKSUAL DAN BIOLOGI REPRODUKSI IKAN SELUANG (Rasbora cephalotaenia, Bleeker 1852) ASAL SUNGAI BENUANG KABUPATEN PALI SUMATERA SELATAN.

APRIANI, MELLI and Junaidi, Endri and Muslim, Muslim (2025) DIMORFISME SEKSUAL DAN BIOLOGI REPRODUKSI IKAN SELUANG (Rasbora cephalotaenia, Bleeker 1852) ASAL SUNGAI BENUANG KABUPATEN PALI SUMATERA SELATAN. Undergraduate thesis, Sriwijaya University.

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Abstract

The Benuang River in South Sumatra plays a crucial role in the lives of the local community and serves as a habitat for aquatic biota, including the fish species Rasbora cephalotaenia. However, the population of this fish has declined due to overfishing and environmental degradation. This study aims to analyze the sexual dimorphism and reproductive aspects of the seluang fish. Fish samples were collected using purposive sampling methods with fishing gear such as traps, nets, and hooks. Measurement of study parameters was conducted at the Fisheries Laboratory of Sriwijaya University. A total of 60 R. cephalotaenia samples were used in this study, comprising 21 males with a total length of 9.0-11 cm and a weight of 4.9-11.3 g, as well as 39 females with a total length of 9-11.5 cm and a weight of 5.8-14.2 g. The results indicate that the morphometric comparison between male and female fish reveals that females tend to be larger, with an average standard length (SL) of 7.94 cm, while males average 7.62 cm. Additionally, several morphometric characteristics, such as dorsal fin length and eye diameter, showed significant differences, reflecting morphological adaptations in the context of reproduction and ecology. Females exhibit larger morphometric sizes compared to males, with a sex ratio of 1:1.85. Both sexes have reached adequate gonadal maturity, and females demonstrate high fecundity, ranging from 278 to 3,336 eggs. The water quality at the research site indicates conditions that support fish life. This study highlights the morphometric differences between male and female fish, the dominance of females within the population, and optimal gonadal maturity.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	aspek reproduksi, dimorfisme, morfometrik, seks rasio
Subjects:	Q Science > QL Zoology > QL614-639.8 Fishes Q Science > QL Zoology > QL799-799.5 Morphology
Divisions:	08-Faculty of Mathematics and Natural Science > 46201-Biology (S1)
Depositing User:	Melli Apriani
Date Deposited:	01 Jul 2025 01:49
Last Modified:	01 Jul 2025 01:49
URI:	http://repository.unsri.ac.id/id/eprint/175479

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