Electronic Theses and Dissertation

Lobster bambu (Panulirus versicolor) adalah spesies lobster yang umum dan menjadi kandidat yang baik untuk akuakultur. Penangkapan lobster jenis ini diduga telah mengalami overfishing dengan indikasi ukurannya semakin mengecil saat
musim penangkapan ikan. Oleh karena itu, perlu dilakukan pengelolaan sumber daya lobster yang ada. Beberapa aspek yang perlu diperhatikan dalam keberlanjutan pengelolaan perikanan terkait dengan aspek biologi, termasuk kajian karakter
morfometrik. Penelitian ini bertujuan untuk membandingkan karakteristik morfometrik P. versicolor dari tiga lokasi di Kabupaten Simeulue. Penelitian dilakukan sejak bulan Maret 2023 sampai dengan bulan Mei 2023 dengan tiga titik
pengambilan sampel (stasiun), antara lain Kecamatan Simeulue Timur, Kecamatan Teluk Dalam, dan Kecamatan Teupah Selatan. Pengambilan sampel P. versicolor menggunakan metode random sampling. Pengukuran morfometrik dilakukan secara langsung di ketiga lokasi. Pengukuran morfometrik menggunakan metode tradisional
terhadap 15 parameter ukuran. Data pengukuran morfometrik dianalisis menggunakan Discriminant Function Analysis (DFA) untuk mendeskriminankan atau mengelompokkan populasi. Hasil analisis multi-variasi terhadap data
morfometrik menghasilkan dugaan P. versicolor dari ketiga lokasi merupakan satu populasi yang sama namun terdiri dari sub-sub populasi yang berbeda. Hal ini dikarenakan sampel lobster yang diambil berasal dari lokasi yang berdekatan. Hasil
analisis hubungan panjang dan berat menunjukkan pola pertumbuhan P. versicolor di ketiga lokasi bersifat allometrik negatif dimana pertambahan panjang lebih dominan daripada pertambahan berat.
Kata Kunci: hubungan panjang dan berat, populasi, Discriminant Function Analysis, Allometrik Negatif

The bamboo lobster (Panulirus versicolor) is a common lobster species and makes a good candidate for aquaculture. Catching this type of lobster is suspected of experiencing overfishing with indications that its size is getting smaller during the fishing season. Therefore, it is necessary to manage existing lobster resources. Several aspects that need to be considered in the sustainability of fisheries management are related to biological aspects, including the study of morphometric characters. This study aims to compare the morphometric characteristics of P. versicolor from three locations in Simeulue District. The research was conducted from March 2023 to May 2023 with three sampling points (stations), including East Simeulue District, Teluk Dalam District, and Teupah Selatan District. Sampling of P. versicolor using random sampling method. Morphometric measurements were carried out directly at all three locations. Morphometric measurements using traditional methods of 15 parameter sizes. Morphometric measurement data were analyzed using Discriminant Function Analysis (DFA) to discriminate or classify the population. The results of multivariate analysis of the morphometric data resulted in the assumption that P. versicolor from the three locations was the same population but consisted of different sub-populations. This is because the lobster samples were taken from adjacent locations. The results of the analysis of the relationship between length and weight showed that the growth pattern of P. versicolor at the third location was negative allometric where the increase in length was faster than the increase in weight. Keywords: length and weight relationship, population, Discriminant Function Analysis (DFA), Negative Allometric