The spatial segregation patterns of sharks from Western Australia
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作者:
Braccini, Matias
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Western Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, AustraliaWestern Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, Australia
Braccini, Matias
[1
]
Taylor, Stephen
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Western Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, AustraliaWestern Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, Australia
Taylor, Stephen
[1
]
机构:
[1] Western Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, Australia
The extent to which sharks segregate by size and sex determines the population structure and the scale at which populations should be managed. We summarized 20 years of fisheries-dependent and independent sampling to define the spatial patterns of size and sexual segregation for sharks in Western Australia. Carcharhinus obscurus and C. plumbeus showed a large-scale (more than 1000 km) latitudinal gradient in size. Large individuals occurred predominantly in the northwest and north whereas smaller individuals occurred predominantly in the southwest and south. Mustelus antarcticus and Furgaleus macki showed strong sexual segregation at very large scales. Females occurred predominantly in the west and southwest whereas the proportion of males in catches substantially increased in the southeast. The populations of other shark species did not show sex and size segregation patterns at very large scales; most species, however, showed varying degrees of segregation when data were analysed at a smaller scale. These findings highlight the importance of matching the scale of observation to the scale of the phenomenon observed. As many shark species are highly mobile, if sampling is opportunistic and constrained both temporally and spatially, the observed segregation patterns may not be representative of those at the population level, leading to inaccurate scientific advice.
机构:
Murdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, AustraliaMurdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, Australia
Anderson, Douglas J.
Kobryn, Halina T.
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Murdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, AustraliaMurdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, Australia
Kobryn, Halina T.
Norman, Brad M.
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Murdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, Australia
ECOCEAN, Fremantle, WA 6160, AustraliaMurdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, Australia
Norman, Brad M.
Bejder, Lars
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Murdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, AustraliaMurdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, Australia
Bejder, Lars
Tyne, Julian A.
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Murdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, AustraliaMurdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, Australia
Tyne, Julian A.
Loneragan, Neil R.
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Murdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, AustraliaMurdoch Univ, Cetacean Res Unit, Sch Vet & Life Sci, Murdoch, WA 6150, Australia
机构:
Dept Primary Ind & Reg Dev Western Australia, Western Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, AustraliaDept Primary Ind & Reg Dev Western Australia, Western Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, Australia
Braccini, Matias
Denham, Ainslie
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Dept Primary Ind & Reg Dev Western Australia, Western Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, AustraliaDept Primary Ind & Reg Dev Western Australia, Western Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, Australia
Denham, Ainslie
O'Neill, Michael F.
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Agrisci Queensland, Maroochy Res Facil, Dept Agr & Fisheries, POB 5083 SCMC, Nambour, Qld 4560, AustraliaDept Primary Ind & Reg Dev Western Australia, Western Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, Australia
O'Neill, Michael F.
Lai, Eva
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Dept Primary Ind & Reg Dev Western Australia, Western Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, AustraliaDept Primary Ind & Reg Dev Western Australia, Western Australian Fisheries & Marine Res Labs, POB 20, North Beach, WA 6920, Australia
机构:
Univ Nacl Comahue, Escuela Super Ciencias Marinas, San Martin 224, RA-8520 San Antonio Oeste, Rio Negro, ArgentinaUniv Nacl Comahue, Escuela Super Ciencias Marinas, San Martin 224, RA-8520 San Antonio Oeste, Rio Negro, Argentina
Bartes, Saia
Simpfendorfer, Colin
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James Cook Univ, Ctr Sustainable Trop Fisheries & Aquaculture, Bldg 32,1 James Cook Dr, Townsville, Qld 4811, Australia
James Cook Univ, Coll Sci & Engn, Bldg 32,1 James Cook Dr, Townsville, Qld 4811, AustraliaUniv Nacl Comahue, Escuela Super Ciencias Marinas, San Martin 224, RA-8520 San Antonio Oeste, Rio Negro, Argentina
Simpfendorfer, Colin
Walker, Terence, I
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Univ Melbourne, Sch BioSci, Biosci 4, Parkvil Le, Vic 3052, Australia
Monash Univ, Sch Biol Sci, 25 Rainforest Walk, Clayton, Vic 3800, AustraliaUniv Nacl Comahue, Escuela Super Ciencias Marinas, San Martin 224, RA-8520 San Antonio Oeste, Rio Negro, Argentina
Walker, Terence, I
King, Carissa
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Murdoch Univ, Ctr Sustainable Aquat Ecosyst, Harry Butler Inst, 90 South St, Murdoch, WA 6150, AustraliaUniv Nacl Comahue, Escuela Super Ciencias Marinas, San Martin 224, RA-8520 San Antonio Oeste, Rio Negro, Argentina
King, Carissa
Loneragan, Neil
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Murdoch Univ, Ctr Sustainable Aquat Ecosyst, Harry Butler Inst, 90 South St, Murdoch, WA 6150, AustraliaUniv Nacl Comahue, Escuela Super Ciencias Marinas, San Martin 224, RA-8520 San Antonio Oeste, Rio Negro, Argentina
Loneragan, Neil
Braccini, Matias
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Govt Western Australia, Western Australian Fisheries & Marine Res Labs, Dept Primary Ind & Reg Dev, POB 20, North Beach, WA 6920, AustraliaUniv Nacl Comahue, Escuela Super Ciencias Marinas, San Martin 224, RA-8520 San Antonio Oeste, Rio Negro, Argentina
机构:
Univ Western Australia, UWA Sch Agr & Environm, 35 Stirling Hwy, Crawley 6009, Australia
Minist Educ Brazil, CAPES Fdn, 2 Bloco L 6 4 Andar, BR-70040020 Brasilia, DF, BrazilUniv Western Australia, UWA Sch Agr & Environm, 35 Stirling Hwy, Crawley 6009, Australia
Nery, Thayse
Polyakov, Maksym
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Univ Western Australia, UWA Sch Agr & Environm, 35 Stirling Hwy, Crawley 6009, AustraliaUniv Western Australia, UWA Sch Agr & Environm, 35 Stirling Hwy, Crawley 6009, Australia
Polyakov, Maksym
Sadler, Rohan
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机构:
Univ Western Australia, UWA Sch Agr & Environm, 35 Stirling Hwy, Crawley 6009, Australia
Pink Lake Analyt, 4 James St, Guildford, WA, AustraliaUniv Western Australia, UWA Sch Agr & Environm, 35 Stirling Hwy, Crawley 6009, Australia
Sadler, Rohan
White, Ben
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Univ Western Australia, UWA Sch Agr & Environm, 35 Stirling Hwy, Crawley 6009, AustraliaUniv Western Australia, UWA Sch Agr & Environm, 35 Stirling Hwy, Crawley 6009, Australia
机构:
Univ Western Australia, Indian Ocean Marine Res Ctr, Australian Inst Marine Sci, Crawley, WA 6009, Australia
Univ Western Australia, Indian Ocean Marine Res Ctr, Sch Biol Sci, Crawley, WA 6009, AustraliaUniv Western Australia, Indian Ocean Marine Res Ctr, Australian Inst Marine Sci, Crawley, WA 6009, Australia
Lester, Emily
Meekan, Mark G.
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Univ Western Australia, Indian Ocean Marine Res Ctr, Australian Inst Marine Sci, Crawley, WA 6009, AustraliaUniv Western Australia, Indian Ocean Marine Res Ctr, Australian Inst Marine Sci, Crawley, WA 6009, Australia
Meekan, Mark G.
Barnes, Peter
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Pk & Wildlife Serv, Dept Biodivers Conservat & Attract, Exmouth, WA 6707, AustraliaUniv Western Australia, Indian Ocean Marine Res Ctr, Australian Inst Marine Sci, Crawley, WA 6009, Australia
Barnes, Peter
Raudino, Holly
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Marine Sci Program, Dept Biodivers Conservat & Attract, Perth, WA 6151, AustraliaUniv Western Australia, Indian Ocean Marine Res Ctr, Australian Inst Marine Sci, Crawley, WA 6009, Australia
Raudino, Holly
Rob, Dani
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Pk & Wildlife Serv, Dept Biodivers Conservat & Attract, Exmouth, WA 6707, AustraliaUniv Western Australia, Indian Ocean Marine Res Ctr, Australian Inst Marine Sci, Crawley, WA 6009, Australia
Rob, Dani
Waples, Kelly
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Marine Sci Program, Dept Biodivers Conservat & Attract, Perth, WA 6151, AustraliaUniv Western Australia, Indian Ocean Marine Res Ctr, Australian Inst Marine Sci, Crawley, WA 6009, Australia
Waples, Kelly
Speed, Conrad W.
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Univ Western Australia, Indian Ocean Marine Res Ctr, Australian Inst Marine Sci, Crawley, WA 6009, AustraliaUniv Western Australia, Indian Ocean Marine Res Ctr, Australian Inst Marine Sci, Crawley, WA 6009, Australia