Ships and Midshipman Fish: Does boat noise influence aggression in a highly vocal fish?

dc.contributor.authorWoods, Mackenzie
dc.date.accessioned2019-05-17T16:18:07Z
dc.date.available2019-05-17T16:18:07Z
dc.date.copyright2019en_US
dc.date.issued2019-05-17
dc.description.abstractUnderwater noise from anthropogenic activities such as recreational boating and commercial shipping has drastically increased over recent decades and is still continuing to rise. An increasing amount of research has shown that anthropogenic noise has been negatively affecting marine animals in several ways. Fish have received relatively little attention in these studies despite being the most speciose marine vertebrates, the majority of which rely on sound reception. Many fishes can not only detect, but also produce sound and are therefore highly reliant on noise for communication, prey and predator detection, and navigation. One of these species is the plainfin midshipman, Porichthys notatus. These fish have an extended parental care period, during which the males guard their nest and eggs until their offspring have hatched. I am studying the effect of boat noise on the aggression of males during their nest defense; I hypothesized that males would be more aggressive in the presence of boat noise than in ambient conditions. I kept male midshipman fish in tanks with artificial nests and ran trials where they were exposed to a crab threat stimulus in the presence and absence of boat noise and then scored their aggressive behaviours from video footage. The fish exhibited a higher level of overall aggression in the noise treatments (likelihood ratio test: χ² = 3.70 p-value: 0.05). Unnecessary aggression is energetically costly and alteration of male behaviour during their breeding season - an ecologically critical period - could impact the reproductive success of this species. Furthermore, these results may strengthen our understanding of the impacts of underwater noise on other ecologically important fish species.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelUndergraduateen_US
dc.description.sponsorshipJCURA Dr. Francis Juanesen_US
dc.identifier.urihttp://hdl.handle.net/1828/10889
dc.language.isoenen_US
dc.relation.ispartofseriesJCURAen_US
dc.subjectmarine biologyen_US
dc.subjectplainfin midshipmanen_US
dc.subjectPorichthys notatusen_US
dc.subjectnoise pollutionen_US
dc.subjectbioacousticsen_US
dc.subjectanimal behaviouren_US
dc.subjectecologyen_US
dc.subjectterritorialityen_US
dc.subjectboat noiseen_US
dc.subjectanthropogenic noiseen_US
dc.subjectparental careen_US
dc.subjectintertidalen_US
dc.subjectreproductive successen_US
dc.subjectfishen_US
dc.titleShips and Midshipman Fish: Does boat noise influence aggression in a highly vocal fish?en_US
dc.typePosteren_US

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