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RESEARCH ARTICLE
Morphometric and meristic characteristics of an endemic Lagusia micracanthus Bleeker, 1860 in the rivers of Maros and Walanae Cenranae Watersheds
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Abstract
Pirik (Lagusia micracanthus Bleeker, 1860) is one of endemic fishes in Sulawesi. Morphometric and meristic infor-mation of Pirik population in various habitats are unknown. The present study aimed to determine the morphometric and meristic variations of Pirik in Maros and Walanae Cenranae Watersheds. Sampling collection was carried out monthly from May 2018 to April 2019 in the Maros watershed, namely Pattunuang River (M1), Bantimurung River (M2), Pucak River (M3); and in Walanae Cenranae watershed particularly in Camba River (W1), Sanrego River (W2), and Ompo River (W3). Morphometric measurements consisted of 31 characters and meristic measurements consisted of 10 characters. Morphometric data was standardized by dividing all morphometric characters by standard length (SL). Analysis of variance (ANOVA) and discriminant analysis (Discriminant Function Analysis) were applied for data analysis. The results showed that the Pirik taken from rivers in the Maros and Walanae Cenranae watershed are two different population groups. There are 12 distinguishing morphometric features for Pirik of the Maros and Walanae Cenranae watershed, i.e. TL (total length), SL (standard length), BDdSA (body depth-dorsal fin origin), HL (head length), Jlup (upper-jaw length), PAfL (pre-anal fin length), ABL (Anal fin base length), PelRL (pelvic ray length), AFRL (anal fin ray length), CPL (caudal peduncle length), CLLup (upper caudal lobe length) and CLLmid (mid-caudal length). There is no significant difference of meristic characters of Pirik obtained from the Maros and Walanae.
Abstrak
Ikan pirik (Lagusia micracanthus Bleeker, 1860) merupakan ikan endemik Sulawesi. Informasi morfometrik dan meristik untuk mengungkap perbedaan antar populasi L. micracanthus pada berbagai habitat belum pernah dilakukan. Penelitian ini bertujuan menganalisis perbedaan morfometrik dan meristik ikan pirik di Daerah Aliran Sungai (DAS) Maros dan DAS Wallanae Cenrana. Manfaat penelitian ini adalah sebagai dasar dalam penentuan strategi konservasi dan pengelolaan ikan pirik secara berkelanjutan. Pengambilan sampel dilakukan pada bulan Mei 2018 hingga April 2019, di DAS Maros yang meliputi Sungai Pattunuang (M1), S.Bantimurung (M2), S.Pucak (M3) dan DAS Wallanae Cenrana, yang meliputi S.Camba (W1), S.Sanrego (W2) dan S.Ompo (W3). Pengukuran morfometrik terdiri atas 31 karakter dan penghitungan meristik terdiri atas 10 karakterData morfometrik dibakukan dengan membagi semua karakter morfometrik dengan panjang standar (SL). Analisis data menggunakan analisis varian (ANOVA) dan analisis diskriminan (Discriminant Function Analysis). Hasil analisis menunjukkan bahwa ikan pirik yang berasal dari sungai-sungai di DAS Maros dan DAS Wallanae Cenrana merupakan dua kelompok populasi yang berbeda. Terdapat 12 karakter morfometrik yang menjadi penciri ikan pirik sungai-sungai di DAS Maros dan di DAS Wallanae Cenrana yaitu TL (panjang total), SL (panjang baku), BDdSA (tinggi badan dari sirip punggung), HL (panjang kepala), Jlup (panjang rahang atas), PAfL (panjang sebelum sirip anal), ABL (panjang dasar sirip anal), PelRL (panjang sirip perut), AFRL (panjang jari-jari lemah sirip anal), CPL (panjang batang ekor), CLLup (panjang lobus ekor bagian atas), CLLmid (panjang tengah ekor). Karakter meristik antara ikan pirik DAS Maros dan Wallanae Cenrana tidak memiliki perbedaan yang nyata.
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