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Balàka PF, Ugarković P, Türtscher J, Kriwet J, Niedermüller S, Krstinić P, Jambura PL. Reply to Soldo, A.; Lipej, L. Comment on "Balàka et al. Updated Checklist of Chondrichthyan Species in Croatia (Central Mediterranean Sea). Biology 2023, 12, 952". BIOLOGY 2024; 13:136. [PMID: 38534406 PMCID: PMC10967779 DOI: 10.3390/biology13030136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/12/2024] [Indexed: 03/28/2024]
Abstract
Balàka et al [...].
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Affiliation(s)
- Pia F. Balàka
- Department of Palaeontology, University of Vienna, Josef-Holaubek-Platz 2 (UZA II), 1090 Vienna, Austria; (J.T.); (J.K.)
| | - Pero Ugarković
- World Wide Fund for Nature Adria (WWF Adria), Gundulićeva 63, 10 000 Zagreb, Croatia (P.K.)
| | - Julia Türtscher
- Department of Palaeontology, University of Vienna, Josef-Holaubek-Platz 2 (UZA II), 1090 Vienna, Austria; (J.T.); (J.K.)
- Vienna Doctoral School of Ecology and Evolution (VDSEE), University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria
| | - Jürgen Kriwet
- Department of Palaeontology, University of Vienna, Josef-Holaubek-Platz 2 (UZA II), 1090 Vienna, Austria; (J.T.); (J.K.)
- Vienna Doctoral School of Ecology and Evolution (VDSEE), University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria
| | - Simone Niedermüller
- World Wide Fund for Nature Mediterranean Marine Initiative (WWF MMI), Via Po 25/c, 00161 Rome, Italy;
| | - Patrik Krstinić
- World Wide Fund for Nature Adria (WWF Adria), Gundulićeva 63, 10 000 Zagreb, Croatia (P.K.)
| | - Patrick L. Jambura
- Department of Palaeontology, University of Vienna, Josef-Holaubek-Platz 2 (UZA II), 1090 Vienna, Austria; (J.T.); (J.K.)
- Vienna Doctoral School of Ecology and Evolution (VDSEE), University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria
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Ellis JR, Barker J, McCully Phillips SR, Meyers EKM, Heupel M. Angel sharks (Squatinidae): A review of biological knowledge and exploitation. JOURNAL OF FISH BIOLOGY 2021; 98:592-621. [PMID: 33174197 DOI: 10.1111/jfb.14613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/02/2020] [Accepted: 11/09/2020] [Indexed: 06/11/2023]
Abstract
Angel sharks (Squatina spp.) are distributed in warm temperate to tropical waters around the world. Many species occur in shelf seas and exhibit seasonal inshore-offshore migrations, moving inshore to give birth. Consequently, there can be high spatial overlap of angel shark populations with fisheries and other human activities. Their dorso-ventrally flattened body shape, large size (most species attain >100 cm total length, LT ) and demersal nature means that they may be taken in a variety of demersal fishing gears from birth. Available data indicate that angel sharks typically have a biennial reproductive cycle, with litter sizes generally <20 and the young born at c. 20-30 cm. The biological characteristics of angel sharks render them susceptible to overexploitation, as exemplified by the decline of Squatina squatina from many parts of its former range in the north-east Atlantic and Mediterranean Sea. Currently, half of the 22 recognized extant species of angel shark are classed as Threatened on the International Union for Conservation of Nature (IUCN) Red List (with a further three classified as Data Deficient). Given the biological vulnerability of angel sharks, and that many species are data-limited, the current paper provides a review of available biological information and fisheries data pertaining to this family.
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Affiliation(s)
- Jim R Ellis
- Centre for Environment, Fisheries and Aquaculture Science, Suffolk, UK
| | | | | | - Eva K M Meyers
- Zoological Research Museum Alexander Koenig, Bonn, Germany
| | - Michelle Heupel
- Australian Institute of Marine Science, Townsville, Queensland, Australia
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Vieira RP, Trueman CN, Readdy L, Kenny A, Pinnegar JK. Deep-water fisheries along the British Isles continental slopes: status, ecosystem effects and future perspectives. JOURNAL OF FISH BIOLOGY 2019; 94:981-992. [PMID: 30746699 DOI: 10.1111/jfb.13927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 02/11/2019] [Indexed: 06/09/2023]
Abstract
In this paper, we revisit the state of deep-water fisheries to the west of the British Isles and aim to provide an overview on the key drivers behind community changes along continental margins. The deep-water fisheries to the west of the British Isles that extend from the shelf-slope break down to the lower slope and along banks and seamounts of the Rockall Basin, mainly target blue ling Molva dypterygia, roundnose grenadier Coryphaenoides rupestris, orange roughy Hoplostethus atlanticus, with by-catches of black scabbardfish Aphanopus carbo and tusk Brosme brosme. These fishing grounds experienced a long period of exhaustive exploitation until the early 2000s, but subsequently the implementation of management strategies has helped to relieve excessive fishing pressure. It is widely accepted that a better understanding of the long-term implications of disturbance is needed to understand patterns in deep-water communities and what sustainable use and exploitation of resources might look like in this context.
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Affiliation(s)
- Rui P Vieira
- Centre for Environment, Fisheries & Aquaculture Science, Lowestoft Laboratory, Lowestoft, UK
- School of Environmental Sciences, University of East Anglia, Norwich, UK
- Ocean and Earth Science, University of Southampton, Southampton, UK
| | - Clive N Trueman
- Ocean and Earth Science, University of Southampton, Southampton, UK
| | - Lisa Readdy
- Centre for Environment, Fisheries & Aquaculture Science, Lowestoft Laboratory, Lowestoft, UK
| | - Andrew Kenny
- Centre for Environment, Fisheries & Aquaculture Science, Lowestoft Laboratory, Lowestoft, UK
| | - John K Pinnegar
- Centre for Environment, Fisheries & Aquaculture Science, Lowestoft Laboratory, Lowestoft, UK
- School of Environmental Sciences, University of East Anglia, Norwich, UK
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Gubili C, Sims DW, Veríssimo A, Domenici P, Ellis J, Grigoriou P, Johnson AF, McHugh M, Neat F, Satta A, Scarcella G, Serra-Pereira B, Soldo A, Genner MJ, Griffiths AM. A tale of two seas: contrasting patterns of population structure in the small-spotted catshark across Europe. ROYAL SOCIETY OPEN SCIENCE 2014; 1:140175. [PMID: 26064555 PMCID: PMC4448844 DOI: 10.1098/rsos.140175] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Accepted: 10/14/2014] [Indexed: 06/04/2023]
Abstract
Elasmobranchs represent important components of marine ecosystems, but they can be vulnerable to overexploitation. This has driven investigations into the population genetic structure of large-bodied pelagic sharks, but relatively little is known of population structure in smaller demersal taxa, which are perhaps more representative of the biodiversity of the group. This study explores spatial population genetic structure of the small-spotted catshark (Scyliorhinus canicula), across European seas. The results show significant genetic differences among most of the Mediterranean sample collections, but no significant structure among Atlantic shelf areas. The data suggest the Mediterranean populations are likely to have persisted in a stable and structured environment during Pleistocene sea-level changes. Conversely, the Northeast Atlantic populations would have experienced major changes in habitat availability during glacial cycles, driving patterns of population reduction and expansion. The data also provide evidence of male-biased dispersal and female philopatry over large spatial scales, implying complex sex-determined differences in the behaviour of elasmobranchs. On the basis of this evidence, we suggest that patterns of connectivity are determined by trends of past habitat stability that provides opportunity for local adaptation in species exhibiting philopatric behaviour, implying that resilience of populations to fisheries and other stressors may differ across the range of species.
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Affiliation(s)
- Chrysoula Gubili
- School of Environment and Life Sciences, University of Salford, Salford, Greater Manchester M5 4WU, UK
| | - David W. Sims
- Marine Biological Association of the United Kingdom, The Laboratory, Plymouth PL1 2PB, UK
| | - Ana Veríssimo
- CIBIO-U.P., Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, Rua Padre Armando Quintas, Vairão 4485-661, Portugal
| | | | - Jim Ellis
- Centre for Environment, Fisheries and Aquaclture Science (CEFAS), Pakefield Road, Lowestoft, Suffolk NR33 0HT, UK
| | - Panagiotis Grigoriou
- Cretaquarium, Thalassocosmos, Hellenic Centre for Marine Research (HCMR), PO Box 2214, Heraklion Crete 71003, Greece
| | - Andrew F. Johnson
- Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography 0202, University of California, 9500 Gilman Drive, San Diego, CA 92083-0202, USA
| | - Matthew McHugh
- Marine and Estuarine Ecology Unit, School of Biological Sciences, University of Queensland, Brisbane, Queensland 4072, Australia
| | - Francis Neat
- Marine Scotland—Science, Marine Laboratory, PO Box 101, Aberdeen AB11 9DB, UK
| | - Andrea Satta
- CNR-IAMC Località Sa Mardini, Torregrande 09170, Italy
| | - Giuseppe Scarcella
- ISMAR-CNR—Istituto di Scienze Marine, Consiglio Nazionale delle Ricerche, Largo Fiera della Pesca 2, Ancona 60125, Italy
| | - Bárbara Serra-Pereira
- Departamento do Mar e Recursos Marinhos, IPMA, Instituto Português do Mar e da Atmosfera, Av. Brasilia, Lisboa 1449-006, Portugal
| | - Alen Soldo
- Department of Marine Studies, University of Split, Livanjska 5, Split 21000, Croatia
| | - Martin J. Genner
- School of Biological Sciences, University of Bristol, Bristol Life Sciences Building, 24 Tyndall Avenue, Bristol BS8 1TQ, UK
| | - Andrew M. Griffiths
- Marine Biological Association of the United Kingdom, The Laboratory, Plymouth PL1 2PB, UK
- School of Biological Sciences, University of Bristol, Bristol Life Sciences Building, 24 Tyndall Avenue, Bristol BS8 1TQ, UK
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Long-term change in a meso-predator community in response to prolonged and heterogeneous human impact. Sci Rep 2013; 3:1057. [PMID: 23308344 PMCID: PMC3541648 DOI: 10.1038/srep01057] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Accepted: 12/14/2012] [Indexed: 11/08/2022] Open
Abstract
Sharks and rays' abundance can decline considerably with fishing. Community changes, however, are more complex because of species interactions, and variable vulnerability and exposure to fishing. We evaluated long-term changes in the elasmobranch community of the Adriatic Sea, a heavily exploited Mediterranean basin where top-predators have been strongly depleted historically, and fishing developed unevenly between the western and eastern side. Combining and standardizing catch data from five trawl surveys from 1948–2005, we estimated abundance trends and explained community changes using life histories, fish-market and effort data, and historical information. We identified a highly depleted elasmobranch community. Since 1948, catch rates have declined by >94% and 11 species ceased to be detected. The exploitation history and spatial gradients in fishing pressure explained most patterns in abundance and diversity, including the absence of strong compensatory increases. Ecological corridors and large-scale protected areas emerged as potential management options for elasmobranch conservation.
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