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ThesisOpen AccessMetadata saja

HUBUNGAN PANJANG BERAT IKAN TAWES (Barbonymus gonionotus) DI SUNGAI LUWENG

SARINDA

2023•Skripsi, Thesis, Disertasi, dan Tugas Akhir

Length-weight relationsips (LWR) and condition factor are of great importance in fishery assessment studies since it provides information aboud the growth of the fish, its general wellbeing, and fitness in an aquatic habitat. This study was conducted to exminel LWR and the condition factor of silver barb (Barbonymus sp). This fish is one of the economically valuble fish in the Luweng river. A fish samples were taken from gill net. Sampling was conducted in October to November 2021. 30 specimens examined. Lenght-weight relationship was analysed using the equation W = a.L b. The condition factor of the fish species was determined using the equation, CF = W/aL b. A LWR showed a negative allometric growth (b=2.73). The condition factor range between 0.81 and 1.25, average 1.01.50% of specimen were normal weight, indicating this species were well-being in their environmental.

Length-weight relationshipcondition factorsBarbonymus sp.

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ThesisOpen AccessMetadata saja

KARAKTERISTIK MORFO-MERISTIK DAN HUBUNGAN PANJANG BERAT IKAN LAYUR (Superfamili Trichiuroidea) HASIL TANGKAPAN TRAWL DI PERAIRAN JUATA LAUT KOTA TARAKAN

FAHRISAL AMIR

2019•Skripsi, Thesis, Disertasi, dan Tugas Akhir

Morpho-meristic characteristics of layur fish (Superfamili Trihiuroidea) using trawl fishing gear in marine waters is very rarely done because fatherly is known for the length and weight of fish caught using trawling. The purpose of the research was to know the morphology of species of layur fish (Superfamili Trihiuroidea) caught in trawl fisheries in marine waters, describe the size and weight distribution of laying fish, analyze and explain the long fish weight relationship. This research was conducted from December 2018 to March 2019. The method of taking data was purposive random sampling. Data analysis included fish identification, long frequency distribution, and long weight relationship. Analysis of fish identification takes reference from the 1993 FAO book, fish species identified in Juata Laut of the Kota Tarakan, Lepturacanthus savala. The result showed distribution of long and heavy frequencies shows that during the study layur fish were caught with a length range of 32.1-37.3 cm and a weight ranging from 15.9-22.7. The relationship between the length of the first week is negative allometric with a value of b = 1.947 and the second week is negative allometric with a value of b = 2.3262 while the relationship of the length of the third week is a positive allometric with a value of b = 3.1028.

Keywords: identification of layur fishlength and weight distributionand length-weight relationship

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