Electronic Theses and Dissertation

Lobster air tawar (Cheraxquadri carinatus) atau disebut red claw, merupakan salah satu jenis udang air tawar yang banyak dibudidayakan di Indonesia. Penelitian ini bertujuan untuk mengkaji perbandingan distribusi lobster air tawar di ketiga lokasi penangkapan berdasarkan selang kelas panjang dan selang kelas bobot serta mengetahui perbandingan hubungan panjang berat dan faktor kondisi lobster air tawar di ketiga lokasi penangkapan. Penelitian ini dilakukan di tiga stasiun yang berbeda, yaitu Desa Bom Kecamatan Laut Tawar, Desa Kala Bintang dan Desa Gegarang Kecamatan Bintang, Kabupaten Aceh Tengah pada bulan Februari-Maret 2025. Metode penelitian yang digunakan adalah eksperimental fishing. Metode analisis yang digunakan adalah hubungan panjang berat, faktor kondisi, selang waktu dan uji Anova. Hasil penelitian menunjukkan bahwa distribusi lobster air tawar berdasarkan selang kelas panjang dan selang kelas bobot berbeda pada ketiga lokasi penangkapan. Lobster di ketiga lokasi umumnya masih berukuran kecil hingga sedang dan belum mencapai ukuran dewasa penuh. Hubungan panjang dan berat lobster air tawar di ketiga lokasi menunjukkan pola pertumbuhan alometrik negatif. Nilai koefisien pertumbuhan (b) yang diperoleh di ketiga lokasi seluruhnya bernilai kurang dari 3, yang menandakan bahwa pertumbuhan panjang lobster lebih dominan dibandingkan dengan pertambahan berat. Serta faktor kondisi (K) lobster air tawar di ketiga lokasi menunjukkan nilai > 1, yang berarti lobster yang tertangkap secara umum berada dalam kondisi fisiologis yang baik dan habitat perairan Danau Lut Tawar mendukung pertumbuhan populasi lobster.

Kata Penting: Eksperimental Fishing; Selang Kelas; Hubungan Panjang Berat; Faktor Kondisi

Crayfish (Cheraxquadri carinatus) or called red claw, is one type of freshwater shrimp that is widely cultivated in Indonesia. This study aims to examine the comparison of crayfish distribution in the three fishing locations based on the length class interval and weight class interval and to determine the comparison of length-weight relationships and condition factors of crayfish in the three fishing locations. This research was conducted at three different stations, namely Bom Village, Laut Tawar Subdistrict, Kala Bintang Village and Gegarang Village, Bintang Subdistrict, Aceh Tengah District in February-March 2025. The research method used is experimental fishing. The analysis method used is the length-weight relationship, condition factor, time interval and Anova test. The results showed that the distribution of crayfish based on length class interval and weight class interval was different at the three fishing sites. Lobsters in the three locations are generally still small to medium sized and have not yet reached full adult size. The relationship between length and weight of crayfish in the three locations shows a negative allometric growth pattern. The value of the growth coefficient (b) obtained in all three locations is less than 3, which indicates that the growth of crayfish length is more dominant than the increase in weight. And the condition factor (K) of crayfish in the three locations shows a value > 1, which means that the crayfish caught are generally in good physiological condition and the water habitat of Lake Lut Tawar supports the growth of the crayfish population. Keywords: Experimental Fishing; Grade Interval; Length Weight Relationship; Condition Factors