: Mangrove is a vegetation that has many benefits. One of them, mangrove provide living space to many organism. Crabs are one of a wide variety of invertebrate animals that live in association with mangroves. The importance of the role of crabs in the mangrove ecosystem because the crab is a burrowing organism, so it will support the mangrove land becomes fertile. This study aims to determine the diversity of crabs, dominant or most commonly found crab species and crab living habitats associated with mangrove trees around Kuala Langsa mangrove forest, Langsa City, Aceh. This research is only descriptive. Sampling is done by 2 methods that is qualitative in quadrant plot 5x5 meter2 and quantitative in quadrant plot 1x1 meter2. From the results of the study found 15 species of crabs from 7 genera and 5 families. The index value of diversity for all research stations was included in the medium category. The uniformity index is high and there is no type dominance on all stations. Of the 15 types of crabs, there are 3 types of economical crabs (Scylla serrata, Scylla olivacea and Thalamita crenata) and 12 types of non-economical crabs. In general, the crabs of the Genus Uca are the most commonly found crabs in the study sites. Keywords: Aceh, Biodiversity, Crabs, Kuala Langsa,  Mangrove  Abstrak : Mangrove merupakan suatu vegetasi yang memiliki banyak manfaat. Salah satu dari manfaat mangrove adalah menyediakan ruang hidup bagi banyak organisme. Kepiting merupakan salah satu dari berbagai jenis hewan avertebrata yang hidup berasosiasi dengan mangrove. Pentingnya peran kepiting pada ekosistem mangrove karena kepiting merupakan hewan yang hidup meliang, sehingga akan membuat tanah pada ekosistem mangrove menjadi subur. Penelitian ini bertujuan untuk mengetahui keanekaragaman jenis kepiting, jenis kepiting yang mendominasi atau paling sering ditemukan dan habitat hidup kepiting yang berasosiasi dengan pohon mangrove di sekitar hutan mangrove Kuala Langsa, Kota Langsa, Aceh.Penelitian ini bersifat deskriptif. Pengambilan sampel dilakukan dengan 2 metode yaitu kualitatif pada kuadran plot 5x5 meter2  dan kuantitatif pada kuadran plot 1x1 meter2. Dari hasil penelitian ditemukan 15 jenis kepiting dari 7 genus dan 5 famili.Nilai indeks keanekaragaman untuk semua stasiun penelitian termasuk dalam kategori sedang.Indeks keseragaman tinggi dan tidak ada dominansi jenis pada seluruh stasiun.Dari 15 jenis kepiting, terdapat 3 jenis kepiting ekonomis (Scylla serrata, Scylla olivacea dan Thalamita crenata) dan 12 jenis kepiting non-ekonomis.Secara umum, kepiting dari genus Uca merupakan kepiting yang paling banyak ditemukan di lokasi penelitian. Kata kunci: Aceh, Keanekaragaman, Kepiting, Kuala Langsa, Mangrove

Pengabdian kepada masyarakat merupakan salah satu pelaksanaan Tridharma Perguruan Tinggi yang harus dilakukan dalam rangka untuk mengembangkan pengetahuan dan teknologi serta inovasi kepada masyarakat terutama masyarakat yang menjadi mitra dalam kegiatan pengabdian. Permasalahan yang perlu mendapat solusi terhadap masyarakat yang membudidayakan ikan lele dengan sistem bioflok di Desa Bayeun Kecamatan Birem Bayeun Kabupaten Aceh Timur, masih lemahnya dalam pengusaan teknologi budidaya itu sendiri sehinggga pihak pengusul harus membantu mitra dan pihak lainnya dalam menguasi  teknologi tersebut sehingga nantinya peternak dapat menerapkannya dalam kegiatan budidaya ikan lele dengan sistem bioflok. Penggunaan teknologi bioflok dirasa memberi manfaat yang besar bagi peternak karena teknologi ini bisa menghemat penggunaan pakan. Setelah diperkenalkan penggunaan, manfaat dan cara penggunaan teknologi dalam menerapkan budidaya ikan lele kepada masyarakat atau peternak ikan diharapkan peternak tertarik dengan teknologi tersebut agar dapat diterapkan pada usaha budidaya ikan lele dengan sistem bioflok di masa mendatang.

The use of natural ingredients in commercial feed has been widely used in the field of cultivation. This natural ingredient is used as a feed additive to increase feed efficiency and promote growth. This study aimed to analyze whether VCO has an influence on the growth of red tilapia (Orechromis sp.). The research method used was the experimental method with 4 treatments and 3 replications (P0 = control; P1 = 5 ml VCO/500 g feed; P2 = 10 ml VCO/500 g feed; P3 = 15 ml VCO/500 g feed). The results showed that the addition of VCO to commercial feed had no effect on the growth in absolute weight, daily growth, survival rate and feed conversion ratio of red tilapia. This happens because the VCO dosage used was not suitable so that it was not effective against the maximum energy intake for red tilapia.

Abstract. Faisal TM, Akbar H, Putriningtias A, Putra SA. 2019. Short Communication: Community structure of prawns (Decapoda: Penaeidae and Palaemonidae) in mangrove inlets of Kuala Langsa, Aceh, Indonesia. Biodiversitas 20: 1306-1311. The aim of this research is to describe the structure of prawn community that found at mangrove inlets of Kuala Langsa (Aceh, Indonesia). The survey was done in August 2018. Sampling sites were defined as arbitrarily. Scope netting (mesh size 1 cm and diameter 100 cm) was used to sample the prawn community. Samples were analyzed and stored at The Primary Laboratory of Universitas Samudra, Kota Langsa, Aceh. Five species of prawns from two families (i.e., Decapoda: Penaeidae and Palaemonidae) were found, i.e., Penaeus monodon, Penaeus indicus, Metapenaeus monoceros, Penaeus vannamei, Palaemon sp. The most dominance species found is M. monoceros, and the most infrequently species found is Palaemon sp. Prawn community between sampling sites are found in a high level of similarity, with medium diversity and evenness index, and no dominance indicated.

This study aims to analyze the combination of Spawnprime and Ovaspec hormones on the gonad maturity process and the broodstock of Peres fish (Osteochilus kappeni). The method used was a completely randomized design (CRD) with 4 treatment levels and 3 replications. The results showed that the combination of Spawnpriment Hormones and Ovaspec in Peres broodfish had a significant effect on IKG, Fecundity, Degree of Fertilization, and Degree of Hatching. However, the increase in absolute weight and egg diameter of Peres fish had no significant effect. The results showed that the combination of Spawnprime and Ovaspec hormones in Peres broodfish had a significant effect on IKG P4 9.16%, P3 8.41%, P2 7.36%, P1 0%. Fecundity P3 11057.54 items, P4 9351.43 items, P2 9210.0 items, P1 0 items. The degree of conception P4 96.00%, P3 95.33, P2 80.33, P1 0%. And the degree of hatching P4 97.93%, P3 92.74, P2 91.70, P1 0%. However, it did not significantly affect the increase in absolute weight P1 4.00 g, P4 3.50 g, P3 and P2 have the same value, namely 3.33 m. Egg diameter P1 0.36 mm, P2 0.33 mm, P2 0.32 mm and 0.29 mm.