The effect of different hook types on catch effectiveness, injuries, and survival rates of the tilapia Oreochromis sp. in recreational fishing

Rusdi, Siti Nur Sahwati (2023) The effect of different hook types on catch effectiveness, injuries, and survival rates of the tilapia Oreochromis sp. in recreational fishing. [Project Paper] (Submitted)

Text lp FSPP 2023 8.pdf Download (3MB)

Abstract

Recreational fishing is one of the most sought-after activities by the public. A growing number of specialist and conservation-minded anglers demonstrated certain tools and strategies to reduce the negative impacts of angling in catch-and-release fisheries. Physical damage of fish in recreational fishing activities tend to be influenced by hook type. Therefore, present study was aimed to investigated the type of hook that suitable to catch the tilapia Oreochromis sp. as well as evaluate the injuries and survival rates after catch-and-release. The sampling was conducted at recreational pond, UPM Bintulu Campus. Three set of fishing rods with two types of hooks (circle hook and octopus hook) was used in this study. The catch efficiency, injuries level and survival rates of both hooks that were used were highlighted. A total of 41 and 22 fish were successfully caught using circle hooks and octopus hooks, respectively. Specifically, 39 out of 41 and 9 out of 22 of the fishes caught was tilapia. The hooking location (non-critical area) of octopus hook and circle hook on the tilapia approximately 100 % and 81.8 %, respectively. While there were only 15.38 % of hook located at the critical area of tilapia when using the circle hook and none for octopus hook. All fish caught in the critical area, i.e., the gills, die after the circle hook is hooked in that area. This may relate with shape of the circle hook whereas the length of the gape shorter than octopus’s hook. The moment of fish captured the bait, the hook easily enters to deeper area of the mouth which led to severe damage to the fish. It was recommended to use octopus hook in recreational fishing in order to reduce the mortality rate after the fish released back to the water.

Item Type:	Project Paper
Faculty:	Faculty of Agriculture and Forestry Sciences
Depositing User:	Mr. Azman Mohamad
Date Deposited:	12 Mar 2024 00:08
Last Modified:	12 Mar 2024 00:08
URI:	http://psaspb.upm.edu.my/id/eprint/1638

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