Shell morphology and size distribution of Turbo spp in Sepanjang Beach by shell collecting: An Initial Survey

¹ Research Center for Ocenography National Research and Innovation Agency of Republic Indonesia (BRIN) Jl. Pasir Putih Raya No.1, RT.8/RW.10, Ancol, Kec. Pademangan, Jkt Utara, DKI Jakarta 14430, Indonesia
² Research Center for Food Technology and Processing, National Research and Innovation Agency of Republic Indonesia (BRIN), Jl. Yogya-Wonosari Km. 31.5, Gunungkidul 55861, Indonesia

^* Corresponding author: alls001@brin.go.id

Abstract

Turbo spp. in Sepanjang Beach, Gunung Kidul, Indonesia, are at risk of depletion due to their popularity for consumption and decoration. Protecting this species demands sustainable management practices. This initial survey aimed to examine the shell morphology, size distribution, and shell growth patterns of Turbo spp. at Sepanjang Beach, Indonesia, to establish baseline data for future research. A total of 233 shells were collected randomly and analyzed for morphological parameters. Shell dimensions exhibited variations in size, shape, color, and whorl features. Shells ranged from 7.59 to 60.96 mm in length and 7.47 to 52.43 mm in width. Operculum dimensions varied from 3.14 to 29.75 mm in length and 3 to 22 mm in width. Size frequency distributions highlighted a peak at 30-35 mm shell length. The right-skewed size distribution indicated a prevalence of smaller individuals, possibly influenced by the environmental and genetic factors. Positive correlations between shell and operculum dimensions suggested an isometric growth pattern, implying symmetrical shell development. These insights are crucial for developing effective conservation strategies for Sepanjang Beach. Further research, including species genetics, size at first gonadal maturity, and environmental influences, is recommended for a comprehensive understanding of Turbo spp. sustainability in the region.