Round goby predation on Hemimysis anomala

Fitzsimons, John D.; Bowen, Kelly L.; Brousseau, C. M.; Dalton, Alex; MacVeigh, Brydon; Johnson, Timothy B.; Yuille, Mike

doi:10.1016/j.jglr.2012.01.001

Cited by 5 publications

(1 citation statement)

References 57 publications

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“…Although these species are both from the Pontocaspian region and they often occupy rocky habitats in the Great Lakes, the round goby seldom feeds on H. anomala. Diet analysis in the present study is consistent with the findings of Fitzsimons et al (2012) which indicated that round gobies lack the biomechanics to feed on elusive mysid prey.…”

Section: Nonindigneous-nonindigenoussupporting

confidence: 90%

Monitoring the Milwaukee Harbor breakwater : an Engineering With Nature® (EWN®) demonstration project

Geisthardt¹,

Suedel²,

Janssen³

2021

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The US Army Corps of Engineers (USACE) maintains breakwaters in Milwaukee Harbor. USACE’s Engineering With Nature® (EWN®) breakwater demonstration project created rocky aquatic habitat with cobbles (10–20 cm) covering boulders (6–8 metric tons) along a 152 m section. A prolific population of Hemimysis anomala, an introduced Pontocaspian mysid and important food source for local pelagic fishes, was significantly (p < .05) more abundant on cobbles versus boulders. Food-habits data of alewife (Alosa pseudoharengus) and rainbow smelt (Osmerus mordax) provided evidence that H. anomala were a common prey item. Night surveys and gill netting confirmed O. mordax preferred foraging on the cobbles (p < .05) and consumed more H. anomala than at the reference site (p < .05). H. anomala comprised a significant portion of the diets of young-of-the-year (YOY) yellow perch (Perca flavescens), YOY largemouth bass (Micropterus salmoides), and juvenile rock bass (Ambloplites rupestris) caught on the breakwater. The natural features’ construction on the breakwater increased the available habitat for this benthopelagic macroinvertebrate and created a novel ecosystem benefiting forage fish and a nursery habitat benefiting nearshore game fish juveniles. These data will encourage the application of EWN concepts during structural repairs at other built navigation infrastructure.

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Section: Nonindigneous-nonindigenoussupporting

confidence: 90%