Size Selectivity in Marine Mammal Diets as a Guide to Evolutionarily Enlightened Fisheries Management

作者: Michael A. Etnier , Charles W. Fowler

DOI: 10.1577/M09-086.1

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摘要: Abstract Commercial fisheries have a long history of nonsustainable harvests—not through deliberate mismanagement but an inability to simultaneously account for the complexity relevant factors, including ecological and coevolutionary interactions within ecosystems. We argue that these factors (e.g., natural selection coevolution) are among structuring processes behind patterns predation exhibited by species such as marine mammals. As such, provide indication harvest practices sustainable in term—that is, normal systems circumstances involved. Thus, selectivity predators their consumption prey meet needs evolutionarily enlightened guidance management, seen missing current practice. Our analysis data characterizing diets 63 mammals indicates majority consumed 30 cm or less length. This pattern is common all marine...

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