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Bycatch in gillnet fisheries threatens Critically Endangered small cetaceans and other aquatic megafauna
Brownell, Robert L., Jr.1; Reeves, Randall R.2; Read, Andrew J.3; Smith, Brian D.4; Thomas, Peter O.5; Ralls, Katherine6; Amano, Masao7; Berggren, Per8; Chit, Aung Myo9; Collins, Tim10; Currey, Rohan11; Dolar, M. Louella L.12; Genov, Tilen13; Hobbs, Roderick C.14; Kreb, Danielle15; Marsh, Helene16; Mei Zhigang17; Perrin, William F.12; Phay, Somany18; Rojas-Bracho, Lorenzo19; Ryan, Gerry E.20; Shelden, Kim E. W.21; Slooten, Elisabeth22; Taylor, Barbara L.23; Vidal, Omar24; Ding, Wang17; Whitty, Tara S.25; Wang, John Y.26

The conservation status of small cetaceans has significantly worsened since the 1980s, when the baiji was the only species of small cetacean listed as Endangered by IUCN. Now the baiji is almost certainly extinct and 13 other species, subspecies, or populations (hereafter units-to-conserve or units) of small cetaceans are listed as Critically Endangered (CR) on the IUCN Red List. Bycatch is the main threat to 11 of the CR units. Entanglement in gillnets contributed to the extinction of the baiji and is responsible for the imminent extinction of the vaquita. Unfortunately, there is no simple technical solution to the problem of bycatch of small cetaceans. If the 8 CR units with 100 or fewer remaining individuals are to be saved, conservation zones must be established where gillnets are eliminated and bans on their use are strictly enforced. Recent experience with the vaquita in Mexico demonstrates that enforcement of such conservation zones can be very difficult. Ineffective enforcement is also a problem for at least 4 of the other CR units. Time is very short and, unless major efforts are made now to address the bycatch problem, the prospects for CR small cetaceans and other at-risk aquatic megafauna are grim. The ultimate long-term solution to the bycatch problem is the development of efficient, inexpensive, alternative fishing gear that can replace gillnets without jeopardizing the livelihoods of fishermen. Good fishery governance and the direct involvement of fishing communities are also essential to the successful conservation of most threatened populations of small cetaceans.

KeywordBycatch Gillnet Small cetacean Dolphin Porpoise Extinction Conservation
Indexed BySCI
WOS Research AreaBiodiversity & Conservation
WOS SubjectBiodiversity Conservation
WOS IDWOS:000521740900007
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorBrownell, Robert L., Jr.
Affiliation1.NOAA Fisheries, Southwest Fisheries Sci Ctr, Monterey, CA 93940 USA
2.Okapi Wildlife Associates, IUCN SSC Cetacean Specialist Grp, Hudson, PQ J0P 1H0, Canada
3.Duke Univ, Nicholas Sch Environm, Beaufort, NC 28516 USA
4.Wildlife Conservat Soc, Bronx, NY 10460 USA
5.Marine Mammal Commiss, Bethesda, MD 20814 USA
6.Smithsonian Conservat Biol Inst, Washington, DC 20008 USA
7.Nagasaki Univ, Grad Sch Fisheries & Environm Sci, Nagasaki 8528521, Japan
8.Newcastle Univ, Sch Nat & Environm Sci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
9.Smithsonian Conservat Biol Inst, Front Royal, VA 22630 USA
10.Wildlife Conservat Soc, Marine Program, Bronx, NY 10460 USA
11.Marine Stewardship Council, London EC1 2DH, England
12.Silliman Univ, Inst Environm & Marine Sci, Dumaguete 6200, Philippines
13.Morigenos Slovenian Marine Mammal Soc, Piran, Slovenia
14.NOAA Fisheries, Alaska Fisheries Sci Ctr, Seattle, WA 98115 USA
15.RASI, Yayasan Konservasi, Samarinda City, East Kalimantan, Indonesia
16.James Cook Univ, Coll Sci & Engn, Townsville, Qld, Australia
17.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
18.NOAA Fisheries, Southwest Fisheries Sci Ctr, La Jolla, CA 92037 USA
19.WWF Cambodia, Phnom Penh, Cambodia
20.Comis Nacl Reas Nat Protegidas CONANP, Ensenada 22860, Baja California, Mexico
21.Univ Melbourne, Sch Biosci, Melbourne, Vic 3010, Australia
22.Univ Otago, Dept Zool, Dunedin 9054, New Zealand
23.Bosques Granados 141, Ciudad De Mexico 11700, Mexico
24.Scripps Inst Oceanog, Ctr Marine Biodivers & Conservat, La Jolla, CA 92093 USA
25.CetAsia Res Grp, Thornhill, ON L4J 7X1, Canada
26.Trent Univ, Dept Biol, Peterborough, ON K9J 7B8, Canada
Recommended Citation
GB/T 7714
Brownell, Robert L., Jr.,Reeves, Randall R.,Read, Andrew J.,et al. Bycatch in gillnet fisheries threatens Critically Endangered small cetaceans and other aquatic megafauna[J]. ENDANGERED SPECIES RESEARCH,2019,40(1):285-296.
APA Brownell, Robert L., Jr..,Reeves, Randall R..,Read, Andrew J..,Smith, Brian D..,Thomas, Peter O..,...&Wang, John Y..(2019).Bycatch in gillnet fisheries threatens Critically Endangered small cetaceans and other aquatic megafauna.ENDANGERED SPECIES RESEARCH,40(1),285-296.
MLA Brownell, Robert L., Jr.,et al."Bycatch in gillnet fisheries threatens Critically Endangered small cetaceans and other aquatic megafauna".ENDANGERED SPECIES RESEARCH 40.1(2019):285-296.
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