Abstract
The present study investigated the catching performance and catching efficiency of natural mud shrimp (alive) (Upogebia pusilla), siliconized mud shrimp and siliconized pellet in handline fishing. The trials were performed in Kıyıkışlacık Village of Muğla province. The main body of the handline is Ø 0.50 mm, leader and snood are Ø 0.27-0.30 mm, the snood length and distance are 10 cm and 20 cm, respectively. Each handline has 3 hooks and the hook type is 4 no straight. Catches from natural mud shrimp, siliconized shrimp and siliconized pellet bait retained separately, sorted by species and weighed as. 0.01 g sensitivity and measured as the total length. Totally 590 individuals from 30 different species in total were caught including; 28 bony fish (93.33%), and 2 cephalopods (0.66%). While natural mud shrimp captured the 50.7% of fish, 44.7% and 4.6% were caught with siliconized mud shrimp and siliconized pellet, respectively. CPUE values of natural mud shrimp, siliconized shrimp and silicon pellet were calculated as 1.57 n/h, 1.38 n/h and 0.14 n/h, respectively. In addition, YPUE values were determined as 121.84 g/h, 137.73 g/h and 7.62 g/h for natural mud shrimp, siliconized shrimp and silicon pellet, respectively. Despite the fact that the number of individuals that a live mud shrimp catch in a unit of time is high, it was found out that the weight is more in a unit of time when silicone mud shrimp is used. It was concluded that using of siliconized mud shrimp has a high capacity of catching performance and catching efficiency and can be used as bait when natural mud shrimp cannot be utilized as alive or unable to be supplied, due to the weather conditions and time restrictions.
Highlights
The present study investigated the catching performance and catching efficiency of natural mud shrimp (Upogebia pusilla), siliconized mud shrimp and siliconized pellet in handline fishing
Results of the catching performance and efficiency of mud shrimp have been revealed for the first time in Turkey
The study results showed that the species caught with live Mediterranean mud shrimp most frequently were (%>10); annular seabream with 24.41%, common pandora 19.06%, gilthead seabream 14.05%, common two-banded seabream 13.71% and brown comber 11.04% (Table 2)
Summary
The present study investigated the catching performance and catching efficiency of natural mud shrimp (alive) (Upogebia pusilla), siliconized mud shrimp and siliconized pellet in handline fishing. While natural mud shrimp captured the 50.7% of fish, 44.7% and 4.6% were caught with siliconized mud shrimp and siliconized pellet, respectively. It was concluded that using of siliconized mud shrimp has a high capacity of catching performance and catching efficiency and can be used as bait when natural mud shrimp cannot be utilized as alive or unable to be supplied, due to the weather conditions and time restrictions. The history of handline fishing dates back to old times (Huse & Fernö 1990) Today, it is commonly used around the world both for commercial and amateur purposes. Ateşşahin et al (2015) determined the relationship between spinner hook sizes (2, 3 and 4) and hook selectivity for rainbow trout (Oncorhynchus mykiss), a species important to recreational fisheries in Karakaya Dam Lake in Eastern Turkey
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