Search results for "Vessel monitoring system"

showing 2 items of 2 documents

The effectiveness of fish feeding behaviour in mirroring trawling-induced patterns

2017

The ability to observe and predict trawling-induced patterns at spatial and temporal scales that are relevant to inform realistic management strategies is a challenge which scientists have consistently faced in recent decades. Here, we use fish feeding behaviour, a biological trait easily impaired by trawling disturbance, to depict alterations in fish condition (i.e. individual fitness) and feeding opportunities. The benthivorous fish Mullus barbatus barbatus was selected as a model species. The observed trends of responses to trawling in prey species confirmed the effectiveness of a non-trawled zone in sustaining higher levels of diet diversity (e.g. quantity and quality of ingested prey) …

0106 biological sciencesMullus barbatusSettore BIO/07 - EcologiaRed mulletPopulationPopulation DynamicsFisheriesStomach contents analysisAquatic ScienceOceanography010603 evolutionary biology01 natural sciencesRed mulletPredationFisherieDownscalingAnimalsEcosystemeducationPerciformeEcosystemeducation.field_of_studyPopulation DynamicbiologyEcologyTrawlingAnimal010604 marine biology & hydrobiologyPhysiological conditionFishesVessel monitoring systemGeneral MedicineFeeding Behaviorbiology.organism_classificationPollutionPerciformesFisherySouthern Tyrrhenian SeaDiet diversity; Downscaling; Red mullet; Southern Tyrrhenian Sea; Stomach contents analysis; Vessel monitoring system; Animals; Ecosystem; Environmental Monitoring; Fisheries; Fishes; Perciformes; Population Dynamics; Feeding Behavior; Oceanography; Aquatic Science; PollutionFisheries managementStomach contents analysiDiet diversityFisheEnvironmental Monitoring
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Trawling disturbance effects on the trophic ecology of two co-generic Astropectinid species

2015

Physical disturbance by trawling can have both negative and positive effects on populations of scavenging benthic organisms. In the present study the impact of fishing activity on feeding behaviour of the two Astropectinids, Astropecten bispinosus and A. irregularis , was assessed based on stomach contents analysis. The study was carried out along trawled seabed highlighting the positive response of the two facultative scavengers to carrion generated by trawl disturbance. Furthermore, there was greater food specialization in areas that were more heavily exploited by trawling. This specialisation could be linked to the availability of certain prey that results from the passage of fishing gea…

Environmental EngineeringDisturbance (geology)FishingPopulationScavengers Stomach contents analysis Energy subsidy Vessel Monitoring System data Ecosystem approach Southern Tyrrhenian Sea.Stomach contents analysisAquatic ScienceBiologyOceanographylcsh:Aquaculture. Fisheries. AnglingPredationSouthern Tyrrhenian Sea.educationEcosystem approachEcology Evolution Behavior and SystematicsTrophic levellcsh:SH1-691Keywords: Scavengers Stomach contents analysis Energy subsidy Vessel Monitoring System data Ecosystem approach Southern Tyrrhenian Sea.Facultativeeducation.field_of_studyTrawlingEcologyFisheryEnergy subsidyVessel Monitoring System dataBenthic zoneScavengersMediterranean Marine Science
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