Electronic Theses and Dissertation

Eksploitasi ikan tongkol di perairan Utara Aceh terus berlanjut tanpa kendali termasuk penggunaan, berbagai alat tangkap yang tidak ramah lingkungan, seperti jaring dengan ukuran yang kecil. Penelitian ini bertujuan untuk mengkaji pengelolaan ikan tongkol yang berkelanjutan dan efektif, dengan pengukuran morfometrik dan meristik sebagai acuan. Sampel dikumpulkan sejak Mei 2024 sampai Agustus 2024 dengan beberapa kali pengambilan sesuai stok ikan yang ada. Pengukuran morfometrik dan meristik dilakukan dengan mengukur dan menganalisis karakteristik fisik ikan, seperti panjang total, panjang standar, berat, proporsi tubuh, jumlah sisik dan sirip. Data tersebut kemudian dianalisis secara statistik untuk mengidentifikasi variasi intra dan antar spesies, serta hubungan dengan faktor lingkungan, analisis ini menggunakan perangkat lunak IBM SPSS untuk memastikan akurasi data. Hasil penelitian menunjukkan bahwa pengukuran morfometrik dan meristik dapat membedakan variasi signifikan antar spesies. Secara morfometrik, spesies Auxis rochei menunjukkan kesamaan dengan Euthynnus affinis. Sementara itu, analisis meristik menunjukkan kesamaan yang lebih dekat antara Auxis rochei dengan spesies kerabatnya, Auxis thazard.

The exploitation of tuna in the northern waters of Aceh continues without proper control, including the use of various types of fishing gear that are not environmentally friendly, such as fine-mesh nets. This study aims to evaluate sustainable and effective management of tuna by using morphometric and meristic measurements as a reference. Samples were collected starting in May-August 2024, with several sampling periods depending on the availability of fish. Morphometric and meristic measurements were conducted by measuring and analyzing the physical characteristics of the fish, such as total length, standard length, weight, body proportions, as well as the number of scales and fins. The data were then analyzed statistically to identify both intra- and interspecific variations, as well as their relationship with environmental factors. IBM SPSS software was used to ensure data accuracy. The results showed that morphometric and meristic measurements could distinguish significant variations between species. Morphometric analysis indicated that Auxis rochei showed similarities with Euthynnus affinis, while meristic analysis showed a closer similarity between Auxis rochei and its relative, Auxis thazard.