Electronic Theses and Dissertation

Anodonta spp. merupakan salah satu jenis kerang-kerangan yang hidup diperairan air tawar. Kerang ini menyukai lingkungan yang didominasi oleh “pasir berlumpur”, habitat paling baik bagi pertumbuhannya karena mengandung persentase pasir dan lumpur yang seimbang. Penelitian ini bertujuan untuk menganalisis pertumbuhan (ukuran panjang, hubungan panjang-berat) dan aspek biologi reproduksi (nisbah kelamin, indeks kematangan gonad (IKG), indeks berat daging (IBD), dan sebaran tingkat kematangan gonad (TKG). Pengambilan sampel dilakukan sebanyak 5 kali pada bulan November-Januari 2023 di Perairan Danau Aneuk Laot. Jenis penelitian yang digunakan adalah deskriptif kuantitatif. Metode pengambilan sampel dilakukan secara acak sederhana (simple random sampling). Lokasi penelitian dibagi kedalam 3 stasiun pengamatan dengan jumlah total sampel sebanyak 146 individu. Hasil penelitian didapatkan dua jenis kerang air tawar yaitu Anodonta anatina dan Anodonta woodiana dengan perbandingan 7 : 3%. Hubungan panjang dan berat kerang air tawar (Anodonta spp.) jantan dan betina bersifat allometrik negatif yaitu pertumbuhan panjang lebih cepat daripada pertumbuhan berat. Secara keseluruhan nisbah kelamin kerang air tawar di Perairan Danau Aneuk Laot adalah 1:1,70 dimana kerang betina yang ada di perairan tersebut lebih besar daripada kerang jantan. Rentang nilai IKG kerang (Anodonta spp.) jantan dan betina masing-masing berkisar 2,30-1,07 gram dan 1,82-0,48 gram. Kemudian untuk analisis rataan IBD dengan persentase tertinggi untuk kerang jantan dan betina yaitu 83,39% dan 11,86%.

Anodonta spp. is one type of shellfish that lives in fresh water waters. This clam likes an environment dominated by "muddy sand", the best habitat for its growth because it contains a balanced percentage of sand and silt. This study aims to analyze growth (length measurement, length-weight relationship) and aspects of reproductive biology (sex ratio, gonadal maturity index (IKG), meat weight index (IBD), and distribution of gonadal maturity levels (TKG). Sampling was carried out as many as 5 times in November-January 2023 in the waters of Lake Aneuk Laot.The type of research used was descriptive quantitative.The sampling method was simple random sampling.The research location was divided into 3 observation stations with a total sample of 146 individuals. The results showed that there were two types of freshwater mussels, namely Anodonta anatina and Anodonta woodiana with a ratio of 7 : 3%. The relationship between length and weight of male and female freshwater mussels (Anodonta spp.) was negative allometric, namely growth in length was faster than growth in weight. The sex ratio of freshwater mussels in Lake Aneuk Laot is 1:1.70 in where the female clams in these waters are bigger than the male clams. The range of IKG values for male and female mussels (Anodonta spp.) ranged from 2.30-grams and 1.82-0.48 grams, respectively. Then for the analysis of IBD with the highest percentage for male and female mussels, namely 83.39% and 11.86%.