Volume 17, Issue 1 (Spring 2025)
3 2025, 17(1): 56-72 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Raisipour Kaji H, Paighambari Y, Mirzaei M. Investigating the effect of hook size and bait type on the catch rate (weight and number percentage) and length frequency of fish caught by handline fishing in Ramin port (Sistan and Baluchestan coasts). 3 2025; 17 (1) :56-72
URL: http://jmb.ahvaz.iau.ir/article-1-1031-en.html
URL: http://jmb.ahvaz.iau.ir/article-1-1031-en.html
Gorgan University of Agricultural Sciences and Natural Resources
Abstract: (104 Views)
The aim of this study was to compare two types of J-shaped hooks, sizes 6 and 12, to determine catch composition, catch rate, length frequency of captured species, and to determine the percentage of individuals caught above the length at maturity (Lm50). During each fishing operation, J-shaped hooks of sizes 6 and 12 were used alternately with Sardinella sindensis and Rastrelliger kanagurta as bait. The results of the catches were recorded separately in pre-designed forms. Sampling operations were conducted in the Ramin Port area of Chabahar County. After each fishing operation, the collected fish were weighed, counted, and their total length measured. The dominant catch composition included the species Sphyraena jello, Scomberomorus commerson, Nemipterus japonicus, Pomadasys kaakan, and Lethrinus nebulosus. During the entire sampling period, 804 fish were caught with a total weight of 751.176 kg, of which 585 fish weighing 703 kg were caught with hook number 6 (larger hook) and 219 fish weighing 48 kg were caught with hook number 12 (smaller hook). In general, hook number 6 caught more than 2.5 times more fish in terms of number and more than 14 times more fish in terms of weight than hook number 12. This indicates that the size of the fish in the fishing area and the size of their mouths were more consistent with hook number 6 and the size of the bait attached to it. So that the spanish mackerel and the common barracuda with an average length of 86 and 55 cm, respectively, had the highest weight percentage (28 and 35) and number percentage (9 and 45) among other fish caught with this hook. The results of the chi-square test showed that there was no significant difference between the catch composition of J-hooks No. 6 and 12 with sardine and indian mackerel baits (P<0.05).. The results of the Kolmogorov-Smirnov test indicated that there was no significant difference in the length frequency distribution for the species Nemipterus japonicus, Scomberoides commersonnianus , Lethrinus nebulosus, Lutjanus Johnii, Pomadasys kaakan, Scomberomorus commerson, and Sphyraena jello between the two hook sizes and two bait types (P > 0.05). By choosing the right hook and bait, we can achieve better selective fishing in fishing areas.
Type of Study: Research |
Subject:
Fisheries
Received: 2025/07/23 | Accepted: 2025/04/22 | Published: 2025/04/22
Received: 2025/07/23 | Accepted: 2025/04/22 | Published: 2025/04/22
Send email to the article author
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
