Pemetaan Potensi Keong Lola Rochia nilotica (Linnaeus, 1767) di Indonesia Berbasis Morfometri

Wahyudi, Nathania Dinar (2021) Pemetaan Potensi Keong Lola Rochia nilotica (Linnaeus, 1767) di Indonesia Berbasis Morfometri. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Populasi R. nilotica semakin menurun akibat eksploitasi cangkang untuk industri, sehingga perlu pemantauan. Pemerintah mengeluarkan kebijakan penetapan ukuran tangkap lebar cangkang R. nilotica adalah 3 80 mm. Tujuan penelitian untuk memetakan potensi cangkang R. nilotica yang diperdagangkan di Indonesia yaitu, Sumatera (Smt), Sulawesi (Sul), Maluku-NTT (Mal), dan Papua (Pap) berdasar komposisi morfometri dan tren ukuran cangkang. Analisis morfometrik cangkang meliputi panjang (p), lebar (l), dan berat (b) diukur menggunakan jangka sorong, sedangkan kondisi protoconch dianalisis secara kualitatif. Sebaran data morfometri dianalisis menggunakan Descriptive Statistic-Excel 2010. Hasil menunjukan adanya fluktuasi komposisi morfometri cangkang per tahun. Kisaran ukuran terbaik (3 80mm) secara berurutan ditemukan di Smt (p = 95,13- 104,49mm; l = 86,61-103,46 mm, b = 172,21-321,96 gr), Mal (p = 91,26-106,72 mm; l = 86,53-108,73 mm; b = 228,01-365,62 gr), Sul (p = 86,92-99,1 mm; l = 84,31-96,25 mm; b = 205,39-317,33 gr) dan Pap (p = 82,46-99,58 mm; l = 76,49-101,24 mm; b=182,57-283,07 gr). Dari 909 sampel R. nilotica di Indonesia, 89% memiliki lebar standar (3 80mm), dengan pemetaan potensi di Smt (33%); Mal (24%); Sul (18%); Pap (14%). Sedangkan, yang tidak memenuhi standar berukuran 51,46-72,15 mm, yaitu di Mal (0,9%); Smt (1,65%); Pap (3,19%); Sul (5,6 %). Secara keseluruhan, 53,9 % protoconch termasuk kategori rusak.
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Population of Rochia nilotica decreasing due to exploitation for shell’s industry, so that monitoring is needed. The Indonesian government releases the policy for catch size of R. nilotica in size of 3 80 mm. This study aimed to mapping the potential trade of R. nilotica in Indonesia including Sumatera(Smt), Sulawesi(Sul), Maluku-NTT(Mal), and Papua(Pap) based on the morphometric compotition and size trends of shells. The morphometric analysis using parameters of length (l), width (w), and weight (wg) that measured by caliper, meanwhile data distribution of morphometric using Descriptive Statistic-Excel 2010. The results revealed the yearly fluctuative data of morphometric composition of R. nilotica. The good quality of shell size (380mm) respectively were found from Smt (l = 95.13-104.49 mm; w = 86.61-103.46mm; wg = 172.21-321.96 gr), Mal ( l = 91.26-106.72 mm; w = 86.53-108.73 mm; wg = 228.01-365.62 gr), Sul (l = 86.92-99.1 mm; w = 84.31- 96.25 mm; wg = 205.39-317.33 gr) and Pap (l = 82.46-99.58 mm; w = 76.49-101.24 mm; wg=182.57-283.07 gr). Among 909 samples of R. nilotica observed, 89% had standard width (380mm), where showed mapping potential of Smt (33%); Mal (24%); Sul (18%); Pap (14%). Shells that were not have standard width were in size of 51.46-72.15 mm, i.e. at Smt (1,65%); Mal (0,9%); Sul (5,6 %); Pap (3,19%). In overall, 53,9 % of shell in condition broken protoconch.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Shell, R. nilotica, morphometric, Cangkang, morfometrik, R. nilotica.
Subjects:	Q Science > QH Biology > QH301 Biology
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Biology > 46201-(S1) Undergraduate Thesis
Depositing User:	Nathania Dinar Wahyudi
Date Deposited:	12 Aug 2021 04:19
Last Modified:	12 Aug 2021 04:19
URI:	http://repository.its.ac.id/id/eprint/85637

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