6533b821fe1ef96bd127aee6

RESEARCH PRODUCT

Large differences in catch per unit of effort between two minnow trap models

Hanna-kaisa LakkaJuha MeriläAntti P. Eloranta

subject

0106 biological sciencesputkimertaPungitius pungitiusDecision MakingcpueFisheriesfunnel trapColor010603 evolutionary biology01 natural sciencesGeneral Biochemistry Genetics and Molecular BiologycatchabilityPungitiusAbundance (ecology)biology.animalpyydystettävyysyksikkösaalisAnimalspiikkikalaCatchability14. Life underwaterFunnel trapEcosystemMedicine(all)pyydysBehavior AnimalbiologyBiochemistry Genetics and Molecular Biology(all)stickleback010604 marine biology & hydrobiologySticklebackEquipment DesignGeneral MedicineSticklebackTrap (plumbing)Minnowbiology.organism_classificationSmegmamorphaTrapFisherykalastuskalatalousFishery1181 Ecology evolutionary biologyCPUEFish <Actinopterygii>trapResearch Article

description

Background: Little is known about variation in catch per unit of effort (CPUE) in stickleback fisheries, or the factors explaining this variation. We investigated how nine-spined stickleback (Pungitius pungitius) CPUE was influenced by trap model by comparing the CPUEs of two very similar minnow trap models fished side-by-side in a paired experimental design. Results: The galvanized trap type (mean CPUE = 1.31 fish h–1) out-fished the black trap type (mean CPUE = 0.20 fish h–1) consistently, and yielded on average 81% more fish. Conclusions: The results demonstrate that small differences in trap appearance can have large impacts on CPUE. This has implications for studies designed to investigate abundance and occurrence of fish using minnow traps. peerReviewed

yearjournalcountryeditionlanguage
2013-04-01
http://urn.fi/URN:NBN:fi:jyu-201408132339