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Coastal chemical cues for settlement of the southern rock lobster, Jasus edwardsii

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Larval behavior plays an important role in dispersal and settlement of marine organisms with cues from the environment often providing crucial guidance for facilitating these processes. The postlarvae, or pueruli, of the southern rock lobster, Jasus edwardsii (Hutton, 1875), are known to migrate over long distances from oceanic water and settle on coastal reefs using a combination of onshore transport and active nocturnal swimming. In laboratory experiments, we examined environmental cues used for this migration, specifically whether chemical cues in coastal vs oceanic seawater influenced their swimming orientation and their rate of development to juveniles. In total, 66% of pueruli actively swam toward coastal water rather than oceanic water (n = 41), indicating that they may use chemical cues in their settlement processes. Holding pueruli in coastal water vs artificial seawater did not expedite the development of pueruli to benthic juvenile stage, indicating that other cues could be important to the final settlement process. The present study suggests that chemical cues are being used in settlement processes during the onshore migration to settlement sites in this ecologically and economically important species.
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Document Type: Research Article

Affiliations: 1: Institute for Marine and Antarctic Studies, University of Tasmania, Nubeena Crescent, Taroona, Tasmania 7053, Australia, Departamento de Biología Marina, Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile, Millennium Nucleus for Ecology and Sustainable Management of Oceanic Islands (ESMOI), Coquimbo, Chile, Departamento de Ecología, Facultad de Ciencias, Universidad Católica de la Santísima Concepción, Chile;, Email: [email protected] 2: Institute for Marine and Antarctic Studies, University of Tasmania, Nubeena Crescent, Taroona, Tasmania 7053, Australia 3: School of Biological Sciences and Institute of Marine Science, University of Auckland, Auckland, New Zealand

Publication date: 01 July 2018

This article was made available online on 09 February 2018 as a Fast Track article with title: "Coastal chemical cues for settlement of the southern rock lobster, Jasus edwardsii".

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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