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Journal : SIMBIOSIS

KEANEKARAGAMAN KERANG (MOLLUSCA: BIVALVIA) DI KAWASAN SERANGAN, DENPASAR, BALI Suratul Wahyuda; Ni Made Suartini; Deny Suhernawan Yusup
SIMBIOSIS Simbiosis Volume 12 No. 2 2024
Publisher : Program Studi Biologi Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JSIMBIOSIS.2024.v12.i02.p01

Abstract

Throughout the waters of the island of Bali, clam are a very valuable biological resource. The Serangan area in Denpasar, Bali, is one of the areas that has lots of clam which are widely used as food. The objective of this research is to identify clam species found in the Serangan Area, those that are collected for consumption by the community, and to determine the values of diversity index, evenness, and dominance of clams in the Serangan Area. The research stations are divided into three with a distance between stations of 250 m. At each station a transect is made perpendicular to the shoreline with a distance between transects of 10 m. Each transect at the station was made 10 sampling quadrants measuring 50x50 cm. The research results revealed that there were eight species of clams found. Four of these species were commonly collected for consumption by the community, namely Marcia hiantina, Anadara antiquata, Meretrix meretrix, and Pinna muricata. The Marcia hiantina species was the most frequently collected for consumption. The diversity index values fell within the moderate category, ranging from 1.10 to 1.39. The evenness index values were categorized as high, ranging from 0.92 to 1.00, and were supported by low dominance index values ranging from 0.25 to 0.33.
KARAKTERISASI DAN ANALISIS POLA PERTUMBUHAN IKAN KEMBUNG (Rastrelliger sp.) YANG DIDARATKAN DI TEMPAT PELELANGAN IKAN KEDONGANAN, BALI: CHARACTERIZATION AND GROWTH PATTERN ANALYSIS OF IKAN KEMBUNG (Rastrelliger sp.) LANDED AT KEDONGANAN FISH AUCTION SITE, BALI Revael Sihombing; Ni Made Suartini; Ngurah Intan Wiratmini
SIMBIOSIS Simbiosis Volume 13 No. 2 2025
Publisher : Program Studi Biologi Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JSIMBIOSIS.2025.v13.i02.p04

Abstract

ABSTRACT One of Bali's largest fish potential areas is Kedonganan, a coastal region where the majority of residents are fishermen. Kedonganan waters represent a highly promising fish landing site due to its direct proximity to the Indian Ocean. Based on preliminary surveys and interviews with local fishermen, the dominant small pelagic fish species frequently landed in large quantities at the Kedonganan Fish Auction (TPI) are mackerel fish (Rastrelliger sp.). This study aims to investigate the morphology, morphometrics, and growth patterns of these species landed at TPI Kedonganan. This research employed survey and interview methods. The variables examined include fish morphology, fish morphometrics consisting of 15 characters, and the growth patterns of mackerel fish (Rastrelliger sp.). The findings reveal that mackerel fish (Rastrelliger sp.) exhibit a fusiform body shape, terminal mouth, forked caudal fin, and cycloid scales. Morphometric measurements showed an average total length of 217.8 cm. The growth pattern of mackerel fish includes negative allometric (b<3).