Behavior And Feeding Habit of Dog Conch (Strombus turturella) in South Bangka Regency, Bangka Belitung Islands Province

Abstract

Dog conch (Strombus turturella) is one of important sources of fishery commodities with high economic values in Bangka Belitung. The needs of Dog conch as consumption still depends on fishermen harvest since its aquaculture has not been cultured until now. This study aims at determining behavior and feeding habit of dog conch. The study was conducted in July 2014 to January 2015. The experiments passed some stages 1) samples was taken in the field by hand collecting, 2) the experiment of seagrass consumed preference, 3) feeding behavior, and 4) Analysis of the stomach contents. The results indicate dog conch does not consume seagrass immediately, but detritus and microalgae species of Thalassiosira sp., Synedra sp., Nitzschia sp., Navicula sp. Dog conch eats by put the probiosis of the shell, then it grinds sediment layer, seagrass leaves and shells of other individuals as source if food. Dog conch behavior from beginning to ending of the observation includes several stages: 1) Initial treatment actively foraging, 2) Individuals dog conch assembled or in pairs, 3) on the second day, the dog conch hoards himself on the base of the substrate and only elastic probiosis which occasionally appear occasionally at the substrate bottom.

Makanan dan Kebiasaan Makan Siput Gonggong (Laevistrombus turturella) di Perairan Pulau Penyengat Kota Tanjungpinang

“…Hasil analisis jenis makanan ini juga didukung oleh hasil penelitian Cob et al (2014), yang menemukan detritus, mikroalga seperti diatom dan sisa jaringan dari tumbuhan lamun Halophila dan Thalassia dalam usus siput Gonggong. Hamparan padang lamun memiliki peran penting bagi siput Gonggong, yaitu sebagai tempat mencari makan, reproduksi dan berlindung (Cob et al, 2012;Supratman & Syamsudin, 2016).…”

Population Structure and Life Table of Dog Conch (Strombus turturella) in Bangka Belitung Islands, Indonesia <i><br>[Struktur Populasi dan Tabel Hidup Siput Gonggong (Strombus turturella) di Kepulauan Bangka Belitung, Indonesia]<i><br>

“…Seagrass bed took an important part as a nutrient supplier from the litters which became the source of organic matter for Dog Conch's food. It was because Dog Conch was detritus eater and epiphytic on the seagrass leaves (Cob et al, 2014;Supratman and Syamsudin, 2016).…”

Polyculture of Juvenile Dog Conch Laevistrombus canarium Reveals High Potentiality in Integrated Multitrophic Aquaculture (IMTA)

“…Similar ingestion patterns were found in Conomurex luhuanus , a close relative of L. canarium . According to the analysis of its stomach contents, L. canarium was reported to feed on tongue-grated particles together with grit and debris [ 5 ]. In addition, the study reported that indigestible sand and debris accounted for approximately 75–90% of its stomach content, whereas algae and diatoms accounting for only 7–15% of its stomach content that would be its potential sources of energy [ 5 ].…”

“…However, in recent years, the number of L. canarium has been declining because of overfishing and environmental damage. Therefore, in many countries, resource surveys and management are underway for L. canarium [ 5 , 6 , 7 , 8 , 9 ]. Because they are increasingly scarce, L. canarium is increasingly valuable.…”