Original scientific paper
LENGTH-WEIGHT RELATIONSHIPS AND CONDITION FACTORS OF THE THREE DOMINANT SPECIES OF MARINE FISHES CAUGHT BY TRADITIONAL BEACH TRAWL IN ULELHEE BAY, BANDA ACEH CITY, INDONESIA
Zainal A. Muchlisin
orcid.org/0000-0002-0858-1853
Vera Fransiska
Abdullah A. Muhammadar
Muhammad Fauzi
orcid.org/0000-0002-9159-155X
Agung S. Batubara
Abstract
The objective of the present study was to examine the length-weight
relationships and condition factors of snapper Lutjanus russellii, ponyfish
Aurigequula fasciata and white-spotted spinefoot Siganus canaliculatus
harvested from Ulelhee Bay, Banda Aceh City, Indonesia. These species are
the predominant fishes caught by traditional beach trawl in Ulelhee Bay,
Banda Aceh City, Indonesia. The sampling was conducted for three months
from April to June 2015 at one-week interval. A total of 900 fish samples
(300 individuals for each species) were measured for the total length
and body weight. The length-weight relationships were calculated using
Linear Allometric Model (LAM), while the relative weights (Wr) and Fulton’s
condition (K) factors were calculated to assess the condition of the fish
samples. The results showed that the b value of 3.04 in snapper indicates
isometric growth pattern, while ponyfish and white-spotted spinefoot fish
had the b values of 1.41 and 1.75, respectively, and these species display
an allometric growth pattern. The average Fulton’s condition factor (K) of
snapper was 3.01 for male and 2.49 for female; female ponyfish has the K
value of 2.92 and 2.92 for male. In addition, the average K value of whitespotted
spinefoot was 2.61 and 2.59 for female and male, respectively.
The relative weight condition factor ranges from 58.73 to 166.09 for
snapper, from 70.55 to 129.65 for ponyfish, and from 71.63 to 133.53 for
white-spotted spinefoot. In general, the relative weight condition factors
tendedto be 100. It is concluded that snapper has isometric growth pattern,
while ponyfish and white-spotted spinefoot display the negative allometric
growth pattern. The condition factors are in excellent condition and indicate
a balance of prey and predator.
Keywords
Coastalfishery; Relative weight condition factor; Fulton’s condition factor; Marine fish
Hrčak ID:
186841
URI
Publication date:
28.9.2017.
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