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Estuarine nursery areas provide a low-mortality environment for young bull sharks Carcharhinus leucas

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dc.contributor Mote Marine Laboratory & Aquarium
dc.contributor Sch Earth & Environm Sci
dc.contributor James Cook Univ
dc.contributor James Cook University
dc.contributor Mote Marine Lab
dc.contributor Ctr Shark Res
dc.contributor Fishing & Fisheries Res Ctr
dc.contributor Australian Inst Marine Sci
dc.contributor Australian Institute Of Marine Science
dc.contributor Australian Institute Of Marine Science (aims) en SIMPFENDORFER, COLIN A. HEUPEL, MICHELLE R. 2017-03-21T00:47:19Z 2013-02-28T06:41:19Z 2017-03-21T00:47:19Z 2019-05-09T01:13:48Z 2013-02-28T06:41:19Z 2017-03-21T00:47:19Z 2013-02-28T06:41:19Z 2019-05-09T01:13:48Z 2011-01-01
dc.identifier 8902 en
dc.identifier.citation Heupel M and Simpfendorfer CA (2011) Estuarine nursery areas provide a low-mortality environment for young bull sharks Carcharhinus leucas. Marine Ecology Progress Series. 433: 237-244. en
dc.identifier.issn 0171-8630
dc.description Link to abstract/full text - en
dc.description.abstract Defining the role and impact of mortality within aquatic populations is often difficult. As a result, we still lack a clear understanding of the level of mortality in natural populations and the role habitat may play in survival. We used long-term acoustic monitoring of neonate bull sharks Carcharhinus leucas in a south Florida estuary to determine mortality rates within this population. Estimates of natural, fishing and total mortality varied among the years examined, but not significantly, suggesting similar survival among years with the majority of individuals (77%) surviving beyond 18 mo. Compared with other juvenile sharks, mortality rates of C. leucas were low. The results indicate that the use of mesohaline estuarine habitats by C. leucas may provide benefits that are not present in more marine habitats where their counterparts reside. Use of estuarine regions may be a successful ecological strategy for improving survival because of reduced predation and competition.
dc.description.sponsorship This research was funded in part by the Mote Scientific Foundation, South Florida Water Management District and the National Shark Research Consortium (NOAA Fisheries). All research was conducted under IACUC animal ethics permission to M.R.H. The authors thank Mote Marine Laboratory staff who helped with field efforts for this research including B. Yeiser, A. Collins, M. Amato, T. Wiley and J. Morris. We also thank numerous volunteer student interns for their assistance during this project.
dc.description.uri en
dc.language English
dc.language en en
dc.relation.ispartof Marine Ecology Progress Series - pages: 433: 237-244 en
dc.relation.ispartof Null
dc.subject Carcharhinus Leucas
dc.subject Ecology
dc.subject Juvenile Lemon Sharks
dc.subject Growth
dc.subject Connectivity
dc.subject River
dc.subject Environmental Sciences & Ecology
dc.subject Telemetry
dc.subject Estuary
dc.subject Ecological Advantage
dc.subject Negaprion-brevirostris
dc.subject Marine & Freshwater Biology
dc.subject Dependence
dc.subject Movement
dc.subject Oceanography
dc.subject South-africa
dc.subject Survival
dc.subject Bull Shark
dc.subject Habitat
dc.title Estuarine nursery areas provide a low-mortality environment for young bull sharks Carcharhinus leucas
dc.type journal article en
dc.identifier.doi 10.3354/meps09191
dc.identifier.wos WOS:000292890400019

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