Effect of Different Baits on Catch Per Unit Effort (CPUE) for Catching Narrow-Clawed Crayfish (Pontastacus leptodactylus) with Fyke-Nets and Traps in Çanakkale Atikhisar Reservoir
This study was aimed to determine the effects of different bait types on the efficiency of fyke-nets and traps in catching narrow-clawed crayfish (Pontastacus leptodactylus (Eschscholtz, 1823)). The study was carried out in Atikhisar reservoir, Çanakkale, between July 2020 and March 2021. In the stu...
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| Format: | Article |
| Language: | English |
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Çanakkale Onsekiz Mart University
2022-07-01
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| Series: | Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries |
| Subjects: | |
| Online Access: | https://dergipark.org.tr/tr/pub/jmsf/issue/71317/1092067 |
| _version_ | 1797914994344460288 |
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| author | Tekin DEMİRKIRAN Uğur ÖZEKİNCİ |
| author_facet | Tekin DEMİRKIRAN Uğur ÖZEKİNCİ |
| author_sort | Tekin DEMİRKIRAN |
| collection | DOAJ |
| description | This study was aimed to determine the effects of different bait types on the efficiency of fyke-nets and traps in catching narrow-clawed crayfish (Pontastacus leptodactylus (Eschscholtz, 1823)). The study was carried out in Atikhisar reservoir, Çanakkale, between July 2020 and March 2021. In the study, 12 traditional fyke-nets (“D” inlet, 5 rigid rings and a leader net) and 12 traps (double inlet) were used. Fyke-nets and traps were rigged with 34 mm stretched mesh that are commonly used in crayfish fishing in Türkiye. Three different bait types including fish, chicken and bread and a control treatment with no bait were allocated to each gear type. Baits were distributed randomly to each gear before fishing trials. The baits were placed in small bags corresponding to 1% of total trap volume. The results of 24 trials showed 68.8% (1940 crayfish) of the total catch was caught with fyke nets and 31.20% (880 crayfish) with traps. The highest average CPUEN values for both trap types were observed in those baited with the chicken meat which were 7.89±1.02 n/fyke net/day and 5.07±0.88 n/trap/day.. The mean length of the crayfish caught by the fyke nets was significantly smaller than those caught by the traps (p<0.05). When the mean CPUE values based on the number of fishing operations were compared, differences were significant for baits other than the chicken meat (p<0.05). These results showed that catching efficiencies of baited fyke-nets and traps were higher (especially chicken meat) than those of unbaited traps than those without bait. |
| first_indexed | 2024-04-10T12:34:47Z |
| format | Article |
| id | doaj.art-023d2cb49fb341a5a6e874cf8dd6ab40 |
| institution | Directory Open Access Journal |
| issn | 2651-5326 |
| language | English |
| last_indexed | 2024-04-10T12:34:47Z |
| publishDate | 2022-07-01 |
| publisher | Çanakkale Onsekiz Mart University |
| record_format | Article |
| series | Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries |
| spelling | doaj.art-023d2cb49fb341a5a6e874cf8dd6ab402023-02-15T16:14:39ZengÇanakkale Onsekiz Mart UniversityÇanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries2651-53262022-07-0151677610.46384/jmsf.1092067 Effect of Different Baits on Catch Per Unit Effort (CPUE) for Catching Narrow-Clawed Crayfish (Pontastacus leptodactylus) with Fyke-Nets and Traps in Çanakkale Atikhisar ReservoirTekin DEMİRKIRAN0https://orcid.org/0000-0003-1613-5236Uğur ÖZEKİNCİ1https://orcid.org/0000-0003-2207-0168ÇANAKKALE ONSEKİZ MART UNIVERSITYÇANAKKALE ONSEKİZ MART UNIVERSITYThis study was aimed to determine the effects of different bait types on the efficiency of fyke-nets and traps in catching narrow-clawed crayfish (Pontastacus leptodactylus (Eschscholtz, 1823)). The study was carried out in Atikhisar reservoir, Çanakkale, between July 2020 and March 2021. In the study, 12 traditional fyke-nets (“D” inlet, 5 rigid rings and a leader net) and 12 traps (double inlet) were used. Fyke-nets and traps were rigged with 34 mm stretched mesh that are commonly used in crayfish fishing in Türkiye. Three different bait types including fish, chicken and bread and a control treatment with no bait were allocated to each gear type. Baits were distributed randomly to each gear before fishing trials. The baits were placed in small bags corresponding to 1% of total trap volume. The results of 24 trials showed 68.8% (1940 crayfish) of the total catch was caught with fyke nets and 31.20% (880 crayfish) with traps. The highest average CPUEN values for both trap types were observed in those baited with the chicken meat which were 7.89±1.02 n/fyke net/day and 5.07±0.88 n/trap/day.. The mean length of the crayfish caught by the fyke nets was significantly smaller than those caught by the traps (p<0.05). When the mean CPUE values based on the number of fishing operations were compared, differences were significant for baits other than the chicken meat (p<0.05). These results showed that catching efficiencies of baited fyke-nets and traps were higher (especially chicken meat) than those of unbaited traps than those without bait.https://dergipark.org.tr/tr/pub/jmsf/issue/71317/1092067crayfishfyke-nettrapbaitcatch per unit effort (cpue) |
| spellingShingle | Tekin DEMİRKIRAN Uğur ÖZEKİNCİ Effect of Different Baits on Catch Per Unit Effort (CPUE) for Catching Narrow-Clawed Crayfish (Pontastacus leptodactylus) with Fyke-Nets and Traps in Çanakkale Atikhisar Reservoir Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries crayfish fyke-net trap bait catch per unit effort (cpue) |
| title | Effect of Different Baits on Catch Per Unit Effort (CPUE) for Catching Narrow-Clawed Crayfish (Pontastacus leptodactylus) with Fyke-Nets and Traps in Çanakkale Atikhisar Reservoir |
| title_full | Effect of Different Baits on Catch Per Unit Effort (CPUE) for Catching Narrow-Clawed Crayfish (Pontastacus leptodactylus) with Fyke-Nets and Traps in Çanakkale Atikhisar Reservoir |
| title_fullStr | Effect of Different Baits on Catch Per Unit Effort (CPUE) for Catching Narrow-Clawed Crayfish (Pontastacus leptodactylus) with Fyke-Nets and Traps in Çanakkale Atikhisar Reservoir |
| title_full_unstemmed | Effect of Different Baits on Catch Per Unit Effort (CPUE) for Catching Narrow-Clawed Crayfish (Pontastacus leptodactylus) with Fyke-Nets and Traps in Çanakkale Atikhisar Reservoir |
| title_short | Effect of Different Baits on Catch Per Unit Effort (CPUE) for Catching Narrow-Clawed Crayfish (Pontastacus leptodactylus) with Fyke-Nets and Traps in Çanakkale Atikhisar Reservoir |
| title_sort | effect of different baits on catch per unit effort cpue for catching narrow clawed crayfish pontastacus leptodactylus with fyke nets and traps in canakkale atikhisar reservoir |
| topic | crayfish fyke-net trap bait catch per unit effort (cpue) |
| url | https://dergipark.org.tr/tr/pub/jmsf/issue/71317/1092067 |
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