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All Journal Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Jurnal Veteriner
Munti Sarida
Lampung University
Earth & Planetary Sciences Education Engineering Immunology & microbiology Medicine & Pharmacology Veterinary

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Evaluation of the Histology of Gonads in Ramirezi (Mikrogeophagus ramirezi) as a Response to Variations in Feeding Ratio Azizah Azizah; Munti Sarida; Yudha Trinoegraha Adiputra; Yeni Elisdiana
Jurnal Veteriner Vol. 26 No. 4 (2025)
Publisher : Faculty of Veterinary Medicine, Udayana University and Published in collaboration with the Indonesia Veterinarian Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19087/

Abstract

Nutritional management is a crucial factor in optimizing the reproductive performance of fish. This study was aimed to evaluate the histological characteristics of the gonads of ramirezi (Mikrogeophagus ramirezi) in response to variations in feed ratios. The feeding trial was conducted over a period of 45 days with four different treatments. The experimental design involved the administration of artificial feed and Tubifex worms in varying ratios: (A) 3:0, (B) 0:3, (C) 2:1, and (D) 1:2. Gonads (testes and ovaries) were collected at the beginning and end of the treatment.  Histological analysis using hematoxylin-eosin staining, to assess the developmental stages based on tissue structure and germ cell stages. Observations revealed significant differences in gonadal maturity levels among the treatments. In the testes, treatment A exhibited a predominance of spermatogonia, while the treatment with a 1:2 ratio (treatment D) displayed seminiferous tubule lumens filled with spermatozoa. The ovaries showed development from Primary Growth Oocyte (PG) to the vitellogenic stage, particularly in treatment D. The combination of artificial feed and Tubifex worms at a 1:2 ratio (treatment D) significantly accelerated gonadal maturation in both male and female M. ramirezi. These findings underscore the importance of integrating high-quality natural feed in the management of broodstock and reproduction within small-scale aquaculture systems.
Effects of dietary supplementation with 17-estradiol on the Steroid Hormone Levels, Gonadosomatic Index, and Gonadal Histology of Female Silver Pompano (Trachinotus blochii) Broodstock Azizah Azizah; Munti Sarida; Yudha Trinoegraha Adiputra; Gregorius Nugroho Susanto; Agus Setyawan
Depik Vol 13, No 2 (2024): AUGUST 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.2.35115

Abstract

Silver pompano (Trachinotus blochii) is a mariculture commodity with fast growth characteristics and easy adaptation to the environment. However, the production of its seeds is hindered by the maturation of the parent's gonads out-side the spawning season. Hormonal approaches are needed for the maturation of the parent's gonads. The aim of this study is to investigate the level of steroid hormones, gonadosomatic index, and gonad histology in female silver pompano (Trachinotus blochii) broodstock after dietary supplementation with 17-estradiol. This research is crucial for the advancement of effective and efficient techniques for rearing this fish. The study used a completely randomized design (CRD) consisting of three different 17estradiol concentrations (0 mg/kg (E1), 30 mg/kg (E2), and 60 mg/kg (E3) fed to female silver pompano broodstock for 30 days, beginning at initial feeding, each with eight individual replicates. Absolute body weight growth, steroid hormone levels, gonadal maturation index, gonadal histology, fecundity, and egg diameter of female silver pompano broodstock were all examined in this study. The incorporation of 17-estradiol hormone into the sustenance amplifies the reproductive capabilities of the female silver pompano broodstock. The inclusion of 17-estradiol hormone in the diet renders the most elevated values regarding fecundity and egg diameter in the female silver pompano broodstock. Histological examinations expose that the development of the gonads in the female broodstock treated with 17-estradiol hormone progresses towards maturation. The inclusion of 17- estradiol hormone in the diet at doses of 20 and 60 mg/kg feed yields the highest values in terms of fecundity and egg diameter in female silver pompano broodstock.Keywords:17-estradiolGonadal histologyGonadosomatic indexSteroid hormoneSilver pompano
Study of content and bioconcentration of heavy metal (Pb,Hg, and Cd) in green mussels (Perna viridis) based on different sizes and ages Bella Krismonita; Indra Gumay Yudha; Munti Sarida; Qadar Hasani; Endang Linirin Widiastuti
Depik Vol 12, No 2 (2023): AUGUST 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.2.29824

Abstract

Green mussel (Perna viridis) has filter-feeding habits and a sessile way of life, with the main food components of plankton and organic matter in the waters. These food components can contaminate green mussels when it accumulates heavy metals. Therefore, this study aims to evaluate heavy metals content and the bioconcentration of lead (Pb), mercury (Hg), and cadmium (Cd) in green mussels based on different sizes and ages. The study was conducted on Pasaran Island, Lampung, Indonesia, and used green mussels aged 3, 5, 7 to 9 months as samples, with 2 replications. The AAS (Atomic Absorption Spectrophotometry) method was used in the analysis of Pb, Hg, and Cd, sampling technique used purposive sampling. The result showed that green mussels at different ages and sizes has impact on Pb content, while an increase of one unit of age and size of green mussels has no effect on the metal content of Hg and Cd. Furthermore, the highest bioconcentration of Pb and Hg was obtained at 9 months, while Cd was observed at 3 months. Based on the results of this study it can be concluded that the simple linear regression appropriate a functional relationship between Pb and the different ages and sizes green mussels cultivated on Pasaran Island , while heavy metals Hg and Cd appropriate with a polynomial quadratic approach and almost do not exist in the form of a functional relationship between Hg and Cd with the different ages and sizes green mussels. Even though it contains heavy metals in below the maximum limit, but care needs to be taken in addressing this phenomenon due to its nature heavy metals that can accumulate in living tissue, thus consuming green mussels containing heavy metals even in relatively small amounts is not recommended.Keywords:Filter feederSessileAccumulateOrganic matterContaminate
Co-Authors Agus Setyawan Azizah Azizah Azizah Azizah Bella Krismonita Endang Linirin Widiastuti Gregorius Nugroho Susanto Indra Gumay Yudha Qadar Hasani Yeni Elisdiana Yudha Trinoegraha Adiputra Yudha Trinoegraha Adiputra