1
|
Cameron LWJ, Roche WK, Beckett K, Payne NL. A review of elasmobranch catch-and-release science: synthesis of current knowledge, implications for best practice and future research directions. CONSERVATION PHYSIOLOGY 2023; 11:coad100. [PMID: 38161598 PMCID: PMC10756054 DOI: 10.1093/conphys/coad100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 11/09/2023] [Accepted: 11/27/2023] [Indexed: 01/03/2024]
Abstract
Until relatively recently commercial fisheries have been considered the main driving factor for elasmobranch population declines. However, this belief has begun to shift with the realization that recreational elasmobranch catches may equal or exceed commercial catches in some regions. Many recreational angling fisheries for elasmobranchs involve high participation in catch-and-release angling practices. However, high release rates may not necessarily equate to high survival rates. Therefore, to assist accurate assessment of the potential impact of recreational angling on elasmobranchs, we attempted to summarize and integrate currently available information on specific risk factors associated with recreational angling, alongside associated mortality rates, as well as information on angler behaviour as it relates to identified risk factors. We categorized the major angling-related effects into two groups: injury-induced effects; and biochemical disruption-induced effects; providing a summary of each group and outlining the main lethal and sub-lethal outcomes stemming from these. These outcomes include immediate and delayed post-release mortality, behavioural recovery periods (which may in-turn confer increased predation risks), chronic health impacts and capture-induced parturition and abortion. Additionally, we detailed a range of angling practices and equipment, including hook-type, hook removal and emersion (i.e. air exposure), as well as inter- and intra-specific factors, including aerobic scope, respiratory mode, body size and species-specific behaviours, which are likely to influence injury and/or mortality rates and should therefore be considered when assessing angling-related impacts. We then utilized these data to provide a range of actionable recommendations for both anglers and policymakers which would serve to reduce the population-level impact of recreational angling on these enigmatic animals.
Collapse
Affiliation(s)
- Luke W J Cameron
- School of Natural Sciences, Department of Zoology, Trinity College Dublin, Dublin 2, Ireland
| | - William K Roche
- Inland Fisheries Ireland, 3044 Lake Drive, Citywest Business Campus, Dublin D24 CK66, Ireland
| | - Katy Beckett
- School of Natural Sciences, Department of Zoology, Trinity College Dublin, Dublin 2, Ireland
| | - Nicholas L Payne
- School of Natural Sciences, Department of Zoology, Trinity College Dublin, Dublin 2, Ireland
| |
Collapse
|
2
|
Dannemiller NG, Cray C, Westmoreland LS, Christiansen EF. Diagnostic agreement between three point-of-care glucose and β-hydroxybutyrate meters and reference laboratory methods in stingrays. Front Vet Sci 2023; 10:1254340. [PMID: 38173551 PMCID: PMC10761536 DOI: 10.3389/fvets.2023.1254340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 11/28/2023] [Indexed: 01/05/2024] Open
Abstract
Point-of-care (POC) glucose and β-hydroxybutyrate (β-HB) meters can potentially provide rapid insight into an elasmobranch's metabolic state in clinical and field research settings. This study evaluated the diagnostic agreement of three commercial POC meters against reference laboratory methods for glucose and β-HB concentrations in stingrays. Blood was collected during anesthetized exams from 28 stingrays representing four species: cownose rays (Rhinoptera bonasus), Atlantic stingrays (Hypanus sabina), southern stingrays (Hypanus americanus), and yellow stingrays (Urobatis jamaicensis). Glucose and β-HB concentrations were measured with each POC meter using whole blood and plasma; in parallel, plasma glucose and β-HB concentrations were measured via reference laboratory methods. Agreement between POC meters and reference laboratory methods was assessed using Bland-Altman methods, Passing-Bablok regression, observed total error, percent relative error, and linear mixed effect models. Plasma glucose and β-HB concentrations determined by reference laboratory methods ranged from <20-63 mg/dL to 0.05-5.38 mmol/L, respectively. One human POC meter-the Precision Xtra-showed the greatest agreement with reference laboratory methods when measuring glucose with whole blood [mean bias and 95% CI: 0 (-3-4) mg/dL] and β-HB with plasma [mean bias and 95% CI: 0.1 (-0.04-0.2) mmol/L]. Stingray sex, weight, buffy coat, and packed cell volume did not significantly affect the agreement between POC meters and reference laboratory methods. Across all three POC meters, mean bias and imprecision for plasma β-HB concentrations were relatively small (0-0.1 mmol/L and 0%, respectively). Utilizing POC meters to measure glucose and β-HB in stingrays may be viable when reference methods are unavailable.
Collapse
Affiliation(s)
- Nicholas G. Dannemiller
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States
- North Carolina Aquariums, Raleigh, NC, United States
| | - Carolyn Cray
- Division of Comparative Pathology, Department of Pathology and Laboratory Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Lori S. Westmoreland
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States
- North Carolina Aquariums, Raleigh, NC, United States
| | - Emily F. Christiansen
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States
- North Carolina Aquariums, Raleigh, NC, United States
| |
Collapse
|
3
|
Jewell OJD, D'Antonio B, Blane S, Gosden E, Taylor MD, Calich HJ, Fraser MW, Sequeira AMM. Back to the wild: movements of a juvenile tiger shark released from a public aquarium. JOURNAL OF FISH BIOLOGY 2023; 103:735-740. [PMID: 37227750 DOI: 10.1111/jfb.15464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 05/24/2023] [Indexed: 05/26/2023]
Abstract
Sharks are an important attraction for aquaria; however, larger species can rarely be kept indefinitely. To date, there has been little work tracking shark movements post-release to the wild. The authors used high-resolution biologgers to monitor a sub-adult tiger shark's pre- and post-release fine-scale movements following 2 years of captivity in an aquarium. They also compared its movement with that of a wild shark tagged nearby. Despite the differences in movement between the two sharks, with vertical oscillations notably absent and greater levels of turning seen from the released shark, the captive shark survived the release. These biologgers improve insight into post-release movements of captive sharks.
Collapse
Affiliation(s)
- Oliver J D Jewell
- School of Biological Sciences, The University of Western Australia, Perth, WA, Australia
- Oceans Institute, The University of Western Australia, Indian Ocean Marine Research Centre, Perth, WA, Australia
| | - Ben D'Antonio
- Oceans Institute, The University of Western Australia, Indian Ocean Marine Research Centre, Perth, WA, Australia
- Australian Institute of Marine Science, Indian Ocean Marine Research Centre, Perth, WA, Australia
| | | | | | - Michael D Taylor
- School of Biological Sciences, The University of Western Australia, Perth, WA, Australia
- Oceans Institute, The University of Western Australia, Indian Ocean Marine Research Centre, Perth, WA, Australia
| | - Hannah J Calich
- School of Biological Sciences, The University of Western Australia, Perth, WA, Australia
- Oceans Institute, The University of Western Australia, Indian Ocean Marine Research Centre, Perth, WA, Australia
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT, Australia
| | - Matthew W Fraser
- School of Biological Sciences, The University of Western Australia, Perth, WA, Australia
- Oceans Institute, The University of Western Australia, Indian Ocean Marine Research Centre, Perth, WA, Australia
- Centre for OceanOmics, The Minderoo Foundation, Perth, WA, Australia
| | - Ana M M Sequeira
- Oceans Institute, The University of Western Australia, Indian Ocean Marine Research Centre, Perth, WA, Australia
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT, Australia
| |
Collapse
|