Electronic Theses and Dissertation

Penelitian di DAL (Danau Aneuk Laot) masih terbatas mengenai bioekologi ikan-ikan yang hidup di DAL, khususnya kajian tentang morfometrik ikan Rasbora sp., belum pernah dilaporkan. Penelitian ini bertujuan untuk mengidentifikasi spesies dan populasi ikan Rasbora sp. yang tertangkap di perairan Danau Aneuk Laot berdasarkan variasi morfometrik antar populasi. Penelitian ini dilaksanakan pada bulan Oktober - Desember 2024. Pengambilan sampel dilakukan di Danau Aneuk Laot Kecamatan Sukakarya Kota Sabang secara Simple Random Sampling kemudian pengukuran morfometrik dilakukan di Laboratorium Genetik dan Biodiversitas Akuatik, Fakultas Kelautan dan Perikanan. Sebanyak 50 sampel ikan dari masing-masing spesies digunakan untuk dianalisis morfometriknya. Pengukuran morfometrik tradisional dan trus morfometrik dilakukan secara digital dengan menggunakan software ZEN 2012 (Blue edition). Hasil pengamatan terhadap morfologi dan karakter morfometrik pada spesies ikan Rasbora sp. yang tertangkap di perairan Danau Aneuk Laot diidentifikasi sebagai Rasbora sumatrana. Hasil pengukuran karakter morfometrik tradisonal Rasbora sumatrana mendapatkan variasi tertinggi pada pengukuran panjang total (TL) dengan nilai 9,45 cm sedangkan variasi terendah pada pengukuran diamater mata (ED) dengan nilai 0,57 cm. Adapun hasil Pengukuran karakter truss morfometrik Rasbora sumatrana mendapatkan variasi tertinggi pada pengukuran jarak pangkal depan sirip dorsal sampai batas kepala dengan badan ventral (B5) dengan nilai 3,51 cm sedangkan variasi terendah pada pengukuran terendah pada pengukuran jarak pangkal depan sirip anal sampai pangkal belakang sirip anal (D1) dengan nilai 0,87 cm.

Kata kunci: Morfometrik, Rasbora sp., Zen 2012 (blue edition)

Research on the bioecology of fish inhabiting Lake Aneuk Laot (DAL) remains limited, particularly studies on the morphometrics of Rasbora sp., which have not been reported. This study aims to identify the species and populations of Rasbora sp. caught in the waters of Lake Aneuk Laot based on morphometric variations among populations. The research was conducted from October to December 2024. Sampling was carried out in Lake Aneuk Laot, Sukakarya Subdistrict, Sabang City, using Simple Random Sampling, and morphometric measurements were performed at the Genetics and Aquatic Biodiversity Laboratory, Faculty of Marine and Fisheries. A total of 50 fish samples from each species were analyzed for their morphometric characteristics. Traditional and truss morphometric measurements were conducted digitally using ZEN 2012 (Blue edition) software. Observations of the morphology and morphometric characteristics of Rasbora sp. caught in the waters of Lake Aneuk Laot identified the species as Rasbora sumatrana. The results of traditional morphometric measurements of Rasbora sumatrana showed the highest variation in total length (TL), with a value of 9.45 cm, while the lowest variation was found in eye diameter (ED), with a value of 0.57 cm. Truss morphometric measurements of Rasbora sumatrana revealed the highest variation in the distance from the anterior base of the dorsal fin to the boundary between the head and ventral body (B5), with a value of 3.51 cm, while the lowest variation was in the distance from the anterior base of the anal fin to the posterior base of the anal fin (D1), with a value of 0.87 cm. Keywords: Morphometrics, Rasbora sp., ZEN 2012 (blue edition)