Electronic Theses and Dissertation

Penelitian ini bertujuan untuk mengetahui pengaruh salinitas yang berbeda terhadap embriogenesis dan daya tetas telur ikan tawes (barbonymus gonionotus). penelitian dilakukan di laboratorium unit pelaksana teknis daerah (uptd) balai benih ikan krueng batee pada bulan juli–agustus 2023. metode yang digunakan adalah rancangan acak lengkap (ral) dengan 5 perlakuan salinitas (0 ppt, 1 ppt, 2 ppt, 3 ppt, dan 4 ppt) dan 4 kali ulangan. hasil penelitian menunjukkan bahwa salinitas berpengaruh nyata terhadap derajat penetasan (hatching rate), kelangsungan hidup (survival rate), dan abnormalitas larva, tetapi tidak berpengaruh nyata terhadap derajat pembuahan (fertilization rate). derajat penetasan tertinggi ditemukan pada perlakuan 3 ppt sebesar 77,80 ± 1,17, sedangkan yang terendah pada perlakuan 4 ppt sebesar 66,46 ± 1,36. tingkat kelangsungan hidup tertinggi juga terjadi pada salinitas 3 ppt sebesar 76,96 ± 2,41, sementara abnormalitas larva tertinggi ditemukan pada salinitas 4 ppt sebesar 12,74 ± 1,68. berdasarkan hasil tersebut, salinitas optimum untuk embriogenesis dan daya tetas telur ikan tawes adalah pada salinitas 3 ppt. penelitian ini memberikan informasi penting terkait pengelolaan lingkungan optimal untuk mendukung keberhasilan pembenihan ikan tawes.

This research aims to determine the effect of different salinities on embryogenesis and hatchability of tawes fish (Barbonymus gonionotus) eggs. The research was conducted at the Laboratory of the Regional Technical Implementation Unit (UPTD) of the Fish Hatchery Center Krueng Batee in July–August 2023. The method used was a Completely Randomized Design (CRD) with five salinity treatments (0 ppt, 1 ppt, 2 ppt, 3 ppt, and 4 ppt) and four replications. The results showed that salinity significantly affected the hatching rate, survival rate, and larval abnormalities, but did not significantly influence the fertilization rate. The highest hatching rate was observed at a salinity of 3 ppt (77.80 ± 1.17), while the lowest was at 4 ppt (66.46 ± 1.36). The highest survival rate was also recorded at 3 ppt (76.96 ± 2.41), and the highest larval abnormalities were observed at 4 ppt (12.74 ± 1.68). Based on these findings, the optimum salinity for the embryogenesis and hatching rate of Barbonymus gonionotus eggs is 3 ppt. This research provides valuable insights into optimal environmental management to support successful breeding of Barbonymus gonionotus.