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Journal : Jurnal Perikanan dan Kelautan

Microplastic Identification of Tinfoil Barb (Puntius schawanafeldii) in Koto Panjang Dam Kampar Regency Riau Province Lily Sherly Margaretha; Budijono Budijono; Muhammad Fauzi
Jurnal Perikanan dan Kelautan Vol. 27 No. 2 (2022): June
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.27.2.235-240

Abstract

Plastic waste can be found everywhere, including in the Koto Panjang Dam. As the plastic waste degraded, the microplastic materials may be distributed in the water and it may be accidentally swallowed by omnivorous fishes such as Puntius schawanafeldii. To understand the presence of the microplastic materials in the fish stomach, a research has been conducted in December 2020 - February 2021. The number of P. schawanafeldii captured was 30 using fish net in 3-5 inch mesh size. The fish was dissected and the stomach was removed. Then the stomach content was added with 10% KOH and was incubated for 2 weeks to delute the organic materials. Then was investigated under a binocular microscope to find out the microplastic materials. Results shown the type of microplastic present in the stomach of P. schawanafeldii was namely film, fibre, and fragment. The most common type of microplastic found was film, followed by fragments and fibre. The abundance of microplastic in the stomach of P. schwanafeldii was around 2 – 15,8 particles/fish.
Growth Rate and Mortality of Giant Freshwater Prawn (Macrobrachium rosenbergii) in Kuala Cenaku Village, Riau Ade Hermawita; Muhammad Fauzi; Deni Erizon; Windarti Windarti
Jurnal Perikanan dan Kelautan Vol. 27 No. 3 (2022): October
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.27.3.280-285

Abstract

The growth rate and mortality rate of giant prawns (Macrobrachium rosenbergii) in the Kuala Cenaku River, Indragiri Hulu Regency, Riau Province were carried out based on carapace length frequency data collected from May to July 2020. This study aims at the growth rate and mortality of giant prawns in the Kuala Cenaku River. For estimating dynamic population, data were analysed by using FiSAT II. The growth parameter of tiger shrimp was 0,78/year with carapace asymptotic length (L ) of 84,8 mm, total mortality rate (Z), natural mortality rate (M), fishing mortality rate (F) were 2,35/year and 1,16/year, 1,19/year, respectively, while and exploitation rate (E) estimated 0,50. The exploitation rate of Tiger Freshwater Prawn in Kuala Cenaku River was fully exploited and tend to overexploited so that it needed to manage wisely and carefully.