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How is artificial lighting affecting the catches in deep water rose shrimp trawl fishery of the Central Mediterranean Sea?
- Publication Year :
- 2021
-
Abstract
- The effect of artificial lights mounted on the headrope trawl net on the catch of deep water rose shrimp (Parapenaeus longirostris), European hake (Merluccius merluccius), and Atlantic horse mackerel (Trachurus trachurus) was tested in a survey carried out on-board a commercial trawler off the SW Sicilian coast. A total of 18 repeated nocturnal hauls, alternating without (control) and with (test) LED lights (10 green and 10 white) according to the fishers’ setup, were conducted. Overall, the test net catch rates were not significantly higher than those of the control net (Kruskal-Wallis test, p > 0.05), except for P. longirostris (p < 0.05). Conversely, the two-tailed Kolmogorov–Smirnov test revealed statistical differences in the size structure of P. longirostris, M. merluccius, and T. trachurus between the test and control nets (p < 0.05). Using generalised linear mixed models, the test net was found to yield higher catches of undersized individuals of the three species and adults of P. longirostris than the control net. Our study results are discussed in the context of the exploitation and management of Mediterranean trawl fisheries.
- Subjects :
- 0106 biological sciences
biology
LED light
010604 marine biology & hydrobiology
Merluccius merluccius
Catch comparison
Gear selectivity
Management, Monitoring, Policy and Law
Aquatic Science
Nocturnal
Oceanography
biology.organism_classification
010603 evolutionary biology
01 natural sciences
Rose shrimp
Horse mackerel
Deep water
Fishery
Mediterranean sea
Hake
Fisheries management
Environmental science
Undersized catch
14. Life underwater
Trachurus trachurus
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....3e50b5689f9328bbcf0028b2f092196e