2013
DOI: 10.1186/1756-0500-6-151
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Large differences in catch per unit of effort between two minnow trap models

Abstract: BackgroundLittle 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.ResultsThe 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 … Show more

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Cited by 13 publications
(29 citation statements)
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“…Despite being historically present in the Lake Bracciano catchment [11], we did not find a single threespine stickleback using capture techniques that are commonly used to collect stickleback [14] and that were successful to retrieve specimens in three other Italian watersheds (Tiber, Garigliano, Tagliamento) during the same sampling campaign. Adult stickleback may, however, have existed in parts of the lake that were not rigorously assessed, i.e., the pelagic and the deeper vegetated part of Lake Bracciano [15].…”
Section: Discussionmentioning
confidence: 79%
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“…Despite being historically present in the Lake Bracciano catchment [11], we did not find a single threespine stickleback using capture techniques that are commonly used to collect stickleback [14] and that were successful to retrieve specimens in three other Italian watersheds (Tiber, Garigliano, Tagliamento) during the same sampling campaign. Adult stickleback may, however, have existed in parts of the lake that were not rigorously assessed, i.e., the pelagic and the deeper vegetated part of Lake Bracciano [15].…”
Section: Discussionmentioning
confidence: 79%
“…We used metallic minnow traps (Dynamic Aqua-Supply Ltd., Surrey, BC, Canada), which are commonly used to collect stickleback quantitatively [14], to probe the littoral zone of Lake Bracciano during breeding season. Each trap had a mesh size of 6.35 mm, being 42 cm long, maximum 22.9 cm wide with an entrance hole of 2 cm diameter.…”
Section: Methodsmentioning
confidence: 99%
“…While trap model – but not baiting – was found to have a significant influence on CPUE, only two different collapsible canvas trap models were used in that study 16 . Similarly, several studies on nine-spined sticklebacks have verified CPUE differences among different trap models 15 17 18 . Moreover, the results from these independent studies indirectly suggest that the collapsible canvas traps and the metallic Gee-type 19 minnow traps might differ in their CPUE.…”
mentioning
confidence: 86%
“…Yet, little research has been conducted in comparing the efficiency of different fishing methods in catching sticklebacks (but see refs. 15 , 16 , 17 , 18 ).…”
mentioning
confidence: 99%
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