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Journal : Tomini Journal of Aquatic Science

The Growth of Chlorella sp. Cultivated in Walne Media with Different Intensities of Light Arafik Lamadi; Mulis Mulis; Agatha Elda Kristanto
Tomini Journal of Aquatic Science VOLUME 3 ISSUE 1, MAY 2022
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (443.904 KB) | DOI: 10.37905/tjas.v3i1.9999

Abstract

This research was composed to identify the effect of different light intensities on the growth of Chlorella sp, as well as the optimal amount of light to improve said growth. This experimental research employed completely randomized design, with 5 treatments of different light intensities; A (3400 lux), B (4400 lux), C (5400 lux), D (6400 lux) and E (7400 lux) with 4 replications for each treatment. Based on the ANOVA, the findings revealed the different effects of the treatments (p
Octolasmic Octolasmis spp. parasite attack on mudcrab Scylla serrata in Tomini Bay Suherman, Sutianto Pratama; Marjan, Rahmatiya; Lamadi, Arafik
Tomini Journal of Aquatic Science VOLUME 3 ISSUE 2, NOVEMBER 2022
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v3i2.14179

Abstract

The present study aimed to identify the Octolasmis spp. ectoparasite's intensity and prevalence in mud crab in Pohuwato Regency. It employed survey and site observation methods with sampling technique of mud crabs in Pohuwato Regency. The research was carried out in three different sites: site 1 (Pohuwato Timur Village), site II (Bulili Village), and site III (Mootilango Village). The results showed that the parasites infesting mud crab in the three separate locations are Octolasmis angulata and Octolasmis cor. The highest intensity rate was at site III, which was dominated by Octolasmis cor. The prevalence of the parasite in sites I, II, and III was 60%, 40%, and 60% in consecutive order. Moreover, the parasite has a 100% and 46% prevalence in female and male crabs, respectively. The water quality indicator (involving temperature, pH level, and soluble oxygen) was at the appropriate rate for mud crab farming.