Phytoplankton is a bio-indicator of fertility in waters. This study aims to determine the impact of detergent and pesticide waste on the phytoplankton community structure in in tilapia aquaculture media. The phytoplankton identification stage was carried out at the MIPA Laboratory Almuslim University. The parameters studied were phytoplankton abundance, diversity index, uniformity index, dominance index, and water quality parameters. The results of this study showed that detergent and pesticide waste at the end of the study had caused a decrease in the abundance value of phytoplankton by 3,250 individual/L and 3,750 individual/L. In the control treatment, the highest phytoplankton composition was dominated by Chaetoceros sp., while the pesticide and detergent treatments were dominated by Golenkenia sp. and Microcystis sp. Exposure to detergent and pesticide waste reduced the diversity index value, the phytoplankton uniformity index value. At the beginning of the study, it has a moderate diversity index (H '= 2.485–3.072), while at the end of the study it shows low diversity (H' = 2.111–2.375). Furthermore, at the beginning and at the end of the study there was a decrease in the uniformity index value (E = 0.87–1.01) and (H '= 0.88–0.94).
Desa Lipah Rayeuk merupakan salah satu daerah yang terletak di pesisir Kabupaten Bireuen yang memiliki potensi sumber daya perikanan laut dan payau khususnya tambak udang vaname, namun permasalahan pada tambak udang vaname adalah kurangnya pemahaman pengeloaan kualitas air, masih menggunakan sistem pengelolaan air untuk tambak masih open system, teknologi dan manajemen budidaya udang belum dipahami sehingga menyebabkan produksi setiap panen menurun. Program pengabdian masyarakat dilaksanakan pada kelompok Laut Mina Budidaya di Desa Lipah Rayeuk, Kabupaten Bireuen. Metode yang digunakan dalam kegiatan ini adalah pendampingan perbaikan teknologi budidaya yang diterapkan adalah closed system yang danaplikasi probiotik pada air. Tahapannya pertama dimulai dari persiapan kolam tandon, kolam pemeliharaan, pengapuran, pemupukan, dan sterilisasi air. Tahapan kedua melakukan penambahan probiotik pada air di tendon penampungan. Hasil kegiatan pengabdian kepada masyarakat peningkatan kepatuhan mitra terhadap SOP pengontrolan kualitas air sudah tinggi, ini merupakan kunci dari keberhasilan usaha budidaya udang vaname. Peningkatan pemahaman mitra tentang pengetahuan dan praktikal aplikasi closed system sebesar 3,53 % sampai dengan 10,91%. Untuk pelaksanaan pengabdian masyarakat berikutnya kegiatan difokuskan untuk membantu mitra dalam proses proses pembutan pakan dengan menerapkan teknologi fermentasi dan pelet dan mengupayakan untuk meningkatkan produksi udang vaname.
Snakehead fish (Channa striata) is a freshwater fish with high economic value both as ornamental and consumed fish. However, the ability to adapt to fluctuating environmental states prompts snakehead fish to be susceptible to parasites, ectoparasites, and endoparasites. Gills, skin, and fins are the major body parts that are often infected with ectoparasites. This study aims to discover the macro pathology in gills, skin, and fins of ectoparasites-infected snakehead fish and its histopathology. This study was conducted from April to June 2021. Observational data on macro pathology and histopathology were analyzed qualitatively. The results indicated that the macro pathology of the skin, gills, and fins of snakehead fish infected with ectoparasites indicates discoloration, excess mucus production, the dull coloration of the gills, and irritation of the gills body surfaces, and skin hemorrhages. In conclusion, infection of ectoparasites affects several alterations in the skin, gills, and fins, both macro pathological and histopathological.
One of the negative impacts arising from the existence of palm oil mill industries is the increase of pollution from Palm Oil Mill Effluent (POME), particularly for the aquatic environment. This study was conducted to investigate the reproductive impairment of male Nile tilapia (Oreochromis niloticus Linnaeus 1758) after exposed to POME. An experiment of a chronic test was carried out using a completely randomized design consisting four treatments with five replication: control (0 mg/L POME), treatment A (1.565 mg/L POME), treatment B (2.347 mg/L POME), and treatment C (3.130 mg/L POME). The exposure of POME was performed for 45 days. Reproductive hormone concentration, gonadosomatic index and spermatocrite value in each treatment statistically analyzed by using one-way analysis of variance (ANOVA). Results showed that the POME exposure had no significant impact on estradiol and testosterone concentrations (p>0.05), but, it triggered a decline in the progesterone concentration (p<0.05). Progesterone concentration decreased significantly from 0.57 ± 0.24 ng/mL in control to 0.28 ± 0.04 ng/mL in treatment C. The hormonal decline resulted in a significant decrease in gonadosomatic index and spermatocrite of male Nile Tilapi (p<0.05). In conclusion, exposure to POME induced reproductive impairment in male Nile Tilapia.
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