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Assessing fine-scale diel movement patterns of an exploited coral reef fish

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dc.contributor.author Currey, Leanne (LM)
dc.contributor.author Heupel, Michelle (MR)
dc.contributor.author Simpfendorfer, Colin (CA)
dc.contributor.author Williams, Ashley (AJ)
dc.date.accessioned 2016-07-05T04:49:52Z
dc.date.accessioned 2017-03-21T00:44:52Z
dc.date.accessioned 2019-07-08T02:14:10Z
dc.date.available 2016-07-05T04:49:52Z
dc.date.available 2017-03-21T00:44:52Z
dc.date.available 2019-07-08T02:14:10Z
dc.date.issued 2015-09
dc.identifier.citation Currey LM, Heupel MR, Simpfendorfer CA, Williams AJ (2015) Assessing fine-scale diel movement patterns of an exploited coral reef fish. Animal Biotelemetry 3: 41 en_US
dc.identifier.uri http://epubs.aims.gov.au/11068/12822
dc.description.abstract Background Understanding movement patterns of species requires that the spatial and temporal scales of experimental designs are appropriate to the proposed ecological questions. Previous research on large-scale movements of the exploited reef fish Lethrinus miniatus suggested that adult individuals may use coral reef slope habitat during the day, shifting to adjacent deeper sandy habitat at night. However, investigation of movement at a fine spatial and temporal scale is required to verify this diel activity pattern. Using a closely positioned acoustic telemetry system, movements of 11 L. miniatus were monitored among habitats from the reef crest, to reef slope and deeper adjacent sandy habitat over 3 months. Fine-scale movement patterns among these habitats were compared among four different 3 h periods of the day: dawn, day, dusk and night. Results Initial observations demonstrated significantly larger horizontal core areas and vertical areas of extent during crepuscular and night periods compared to during the day. Vertical space use (core area and extent) was consistently larger during dawn, dusk and night compared to during the day. Area of activity space extent within the water column and proportional overlap among areas used during different periods of the day varied among weeks, and displayed a pattern consistent with full moon periods. Conclusions Although previous evidence suggested that L. miniatus adults may shift to deeper habitats adjacent to the reef slope at night, greater space use across the shallow crest to deeper sand habitat was observed during dawn, dusk and night periods. Increased luminosity during dawn, dusk and night periods may cause L. miniatus to utilise a larger search area for foraging. While further research is required to confirm foraging during the hours of twilight and darkness, this fine-scale approach identified patterns in nocturnal activity for an important reef teleost. Knowledge of these temporal and spatial differences in L. miniatus behaviour and movement are important to understanding how this species coexists within ecological niches. en_US
dc.description.sponsorship Funding for this research was provided by the Australian Research Council awarded to MRH. Additional research funding was granted to LMC from James Cook University (JCU) School of Earth and Environmental Sciences (SEES). LMC was also supported by an AIMS@JCU Postgraduate Research Scholarship and stipend. All research activities were conducted under GBRMPA permit numbers G10/33754.1 and G10/33758.1 and Queensland Department of Agriculture, Fisheries and Forestry permit number 144482. Treatment of all animals was conducted under ethical guidelines approved by JCU animal ethics number A1566. Infrastructure and field support provided by the Australian Animal Tagging and Monitoring System facility of the Integrated Marine Observing System and the Australian Institute of Marine Science was greatly appreciated. en_US
dc.description.uri http://animalbiotelemetry.biomedcentral.com/articles/10.1186/s40317-015-0072-5 en_US
dc.language.iso en en_US
dc.publisher BioMed Central en_US
dc.rights Attribution 3.0 Australia *
dc.rights.uri http://creativecommons.org/licenses/by/3.0/au/ *
dc.subject acoustic telemetry en_US
dc.subject small scale en_US
dc.subject Lethrinidae en_US
dc.subject fisheries management en_US
dc.title Assessing fine-scale diel movement patterns of an exploited coral reef fish en_US
dc.type journal article en_US
dc.identifier.doi 10.1186/s40317-015-0072-5


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