Abstract. Ridho MR, Patriono E, Sholikah M. 2019. Food habits of three species of mudskippers in the Musi River Estuary, South Sumatra, Indonesia. Biodiversitas 20: 2368-2374. This study provided understanding of morphometric variation and diet composition of three species of mudskippers, i.e. Boleophthalmus boddarti, Periophthalmodon schlosseri, and Periophthalmus chrysospilos. The data obtained can be used for fish cultivation in the future. The relation of weight and length of species B. boddarti, P. schlosseri and P. chrysospilos had a correlation of 72.2%, 98.2%, and 94.5%, respectively with the value of b = 1.474, 3.189, and 2.271, respectively. This suggests that the growth patterns of B. boddarti and P. chrysospilos are allometrically negative, while P. schlosseri is allometrically positive. B. boddarti is classified as a herbivore, the main food of phytoplankton from Bacillariophyceae class with percentage 100%; 80% of Chlorophyceae; 95.6% of Cyanophyceae; 13.33% of Desmidiaceae; 13.33% of Euglenophyceae and 37.78% of Xanthophyceae. P. schlosseri is classified as carnivores, the main food is Uca sp. with IRI of 17.131.45% and complimentary food of Lycosa sp. with IRI of 80.79%. P. chrysospilos is also classified as carnivores with the main food is fish eggs with IRI of 8057.07% and complementary foods of Uca sp. with IRI of 1935.3%.

Keanekaragaman dan kelimpahan ikan di perairan sangat tergantung dari kelimpahan fitoplankton sebagai makanannya, sedangkan kelimpahan fitoplankton tergantung kondisi kualitas perairan. Sebagai upaya mengetahui hubungan tersebut maka dilakukan penelitian ini yang bertujuan menganalisis hubungan kelimpahan fitoplankton, konsentrasi klorofil-a dan kualitas perairan. Penelitian ini dilakukan di perairan pesisir Sungsang, Sumatera Selatan dari Bulan Juli sampai Agustus 2017. Pengambilan sampel dilakukan dengan metode purposive sampling. Hasil penelitian menunjukkan bahwa kecerahan berkisar antara 6,3-45,5%, kekeruhan 2-4 NTU, suhu 29,6-30,8oC, pH 6,0-7,7, salinitas 0-16 ppt, DO 5,33-6,50 mg/L, BOD 0,4-3,6 mg/L, amonia 0,1-0,32 mg/L, fosfat 0,01-216 mg/L, nitrat 0,006-2,96 mg/L, klorofil-a 1,68-20,6 mg/m3 kelimpahan fitoplankton berkisar (96-240) mg/L. Terdapat hubungan positif antara konsentrasi klorofil-a dengan fitoplankton, fosfat, nitrat, DO, BOD5, secara berturut-turut sebesar 95,5%, 91%, 76,6%, 82,2%, -63%. Semakin tinggi konsentrasi fosfat dan nitrat makin tinggi pula konsentrasi klorofil-a, dan semakin tinggi konsentrasi klorofil-a menyebabkan konsentrasi oksigen terlarut semakin tinggi. Semakin tinggi BOD5 dan amonia maka konsentrasi klorofil-a makin rendah.

ABSTRAKPenelitian mengenai kebiasaan makanan dan cara makan ikan kakap putih (Lates calcarifer Block) di perairan Terusan Dalam pantai Timur Provinsi Sumatera Selatan telah dilakukan pada bulan Maret -Juni 2012. Tujuan penelitian ini adalah untuk menganalisis kebiasaan makanan dan cara makan ikan kakap putih (Lates calcarifer Block) yang terdapat di perairan Terusan Dalam Taman Nasional Sembilang. Pengambilan sampel dilakukan dengan metode purpossive sampling dengan menggunakan alat tangkap jaring tangsi dengan mata jala berdiameter 3-4 inchi. Hasil penelitian dari bulan Maret sampai bulan juni didapatkan 31 ekor Lates calcarifer Block. Berdasarkan Indeks Relatif Penting (IRP), makanan alami ikan kakap putih (Lates calcarifer Block) pada bulan Maret -Juni 2012 terdiri dari udang sebagai pakan utama dengan Indeks Relatif Penting 72,37%-99,51%, ikan sebagai pakan pelengkap dengan Indeks Relatif Penting 11,33%-27,63% dan sebagai pakan tambahan yaitu cacing dengan Indeks Relatif Penting (IRP) 0,49%.Kata kunci: kebiasaan, makanan, cara makan, ikan kakap putih ABSTRACTResearch about the food habits and feeding habits of white snapper fish (Lates calcarifer Block) in Terusan Dalam (inside canal) waters, East coast of South Sumatera Province, had been done during March to June 2012. The purpose of this research was to analyze the food habits and feeding habits of white snapper fish (Lates calcarifer Block) on Terusan Dalam (inside canal) waters, East coast of South Sumatera Province. Sampling method of the fish was purposive sampling method using Tangsi net. The results of this research showed that the number of fish from March to June totaled 31 individuals of fish. Based on the Relative Importance Index (RII), the natural food of white snapper fish (Lates calcarifer Block) in March to June 2012 consisted of shrimp as the main food with the Relative Importance Index 72.37-99.51%, the fish was as the complement food with the Relative Importance Index 11.33-27.63%, and as the additional food was the worm with Relative Importance Index 0.49%.

Abstrak Estuari adalah salah satu habitat penting bagi ikan, namun terancam akibat peningkatan aktivitas manusia. Hal tersebut dapat memengaruhi keanekaragaman ikan di sekitarnya. Tujuan penelitian ini untuk menganalisis keanekaragaman dan kelimpahan larva ikan di sekitar muara Sungai Musi Sumatra Selatan. Penelitian  ini menggunakan metode survei dengan cruise track design dan lintasan survei continuous parallel pada setiap stasiun secara swept area. Hasil penelitian menunjukkan bahwa indeks keanekaragaman (H’) di muara Sungai Musi pada Maret 2019 sebesar 0,639 sedangkan pada Mei 2019 sebesar 1,253. Kelimpahan relatif pada Maret 2019 lebih tinggi daripada Mei 2019. Kelimpahan Relatif (Kr) pada Maret 2019 antara 0,69–84,61% dan pada Mei 2019 antara 0,21–58,77%. Kelimpahan larva ikan yang ditemukan pada Mei lebih tinggi, yaitu sebanyak 456 individu dari 10 famili. Pada Maret ditemukan lebih rendah, yaitu sebanyak 143 individu dari 6 famili. Ditemukan larva ikan dari famili Engraulidae, Belonidae, Osphronemidae, Nemipteridae, Gerreidae, dan Gobiidae pada Maret. Sedangkan pada Mei 2019, yaitu Nemipteridae, Engraulidae, Scatophagidae, Chandidae, Lobotidae, Terapoinidae, Belonidae, Osphronemidae, Chanidae, Clupeidae. Abstract Estuary is one of important habitat for fish, yet is threatened by an increase in human activities. Thus affecting the diversity of fish around it. This study aim to determine the diversity and abundance of fish larvae around the mouth of Musi River in South Sumatra. This study was conducted using survey method with Cruise Track Design and continuous parallel survey track by swept area at each station. The results showed that the diversity index (H ') at the mouth of the Musi River in March 2019 was 0.639 while in May 2019 was 1.253. Relative Abundance (Kr) in March 2019 between 0.69–84.61% and in May 2019 between 0.21–58.77%. Abundance of fish larvae in May was found higher at 456 individuals from 10 families. Whereas in March it was found to be lower as many as 143 individuals from 6 families. The relative abundance in March 2019 was lower than in May. Fish larvae from the Engraulidae, Belonidae, Osphronemidae, Nemipteridae, Gerreidae and Gobiidae families were found in March. Whereas in May 2019 were Nemipteridae, Engraulidae, Scatophagidae, Chandidae, Lobotidae, Terapoinidae, Belonidae, Osphronemidae, Chanidae, Clupeidae.

This research was conducted to assess various bioactive compounds in the meat of mudskippers found in the Sungsang 2 Village, Banyuasin regency, South Sumatra. The research had been synthesized using n-hexane from February to May 2018 at Agricultural Technology Production Laboratory, Sriwijaya University. Subsequently, the mudskippers (Periopthalmus chrysospilos, Boleopthalmus boddarti, and Periophthalmodon schlosseri) extract was synthesized and further investigate by conducting the GC-MS analysis. The study of bioactive compounds in mudskippers was carried out by evaporating in vacuum evaporation at 30°C. The results showed that Periopthalmus chrysospilos has five classes of bioactive compounds such as steroids, terpenoids, carotenoids, canabinoids, and alkaloids and Boleopthalmus boddarti has five classes of bioactive compounds including steroids, carotenoids, terpenoids, bufadienolides, and carotatoxins. Furthermore, Boleopthalmus dussumieri has four classes of bioactive compounds such as steroids, carotenoids, terpenoids, and carotatoxins and Periophthalmodon schlosseri has three classes of bioactive compounds including steroids, carotenoids and terpenoids. This research discussed the potential benefit of all bioactive compounds in mudskippers for alleviating and treating children with enuresis through the review of literature on the most cited bioactive compounds.