Extinction is Imminent for Mexico's Endemic Porpoise Unless Fishery Bycatch is Eliminated. Issue 5 (5th December 2016)
- Record Type:
- Journal Article
- Title:
- Extinction is Imminent for Mexico's Endemic Porpoise Unless Fishery Bycatch is Eliminated. Issue 5 (5th December 2016)
- Main Title:
- Extinction is Imminent for Mexico's Endemic Porpoise Unless Fishery Bycatch is Eliminated
- Authors:
- Taylor, Barbara L.
Rojas‐Bracho, Lorenzo
Moore, Jeffrey
Jaramillo‐Legorreta, Armando
Ver Hoef, Jay M.
Cardenas‐Hinojosa, Gustavo
Nieto‐Garcia, Edwyna
Barlow, Jay
Gerrodette, Tim
Tregenza, Nicholas
Thomas, Len
Hammond, Philip S. - Abstract:
- Abstract: The number of Mexico's endemic porpoise, the vaquita ( Phocoena sinus ), is collapsing primarily due to bycatch in illegal gillnets set for totoaba ( Totoaba macdonaldi ), an endangered fish whose swim bladders are exported to China. Previous research estimated that vaquitas declined from about 567 to 245 individuals between 1997 and 2008. Acoustic monitoring between 2011 and 2015 showed a decline of 34%/year. Here, we combine visual line transect and passive acoustic data collected simultaneously in a robust spatial analysis to estimate that only 59 (95% Bayesian Credible Interval [CRI] 22–145) vaquita remained as of autumn 2015, a decrease since 1997 of 92% (95% CRI 80–97%). Risk analysis suggests that if the current, temporary gillnet ban is maintained and effectively enforced, vaquitas could recover to 2008 population levels by 2050. Otherwise, the species is likely to be extinct within a decade.
- Is Part Of:
- Conservation letters. Volume 10:Issue 5(2017:Sep./Oct.)
- Journal:
- Conservation letters
- Issue:
- Volume 10:Issue 5(2017:Sep./Oct.)
- Issue Display:
- Volume 10, Issue 5 (2017)
- Year:
- 2017
- Volume:
- 10
- Issue:
- 5
- Issue Sort Value:
- 2017-0010-0005-0000
- Page Start:
- 588
- Page End:
- 595
- Publication Date:
- 2016-12-05
- Subjects:
- Extinction -- illegal fishing -- line transect -- Phocoena sinus -- Totoaba macdonaldi -- vaquita abundance -- passive acoustic monitoring -- C‐POD
Biodiversity conservation -- Periodicals
Biodiversity -- Monitoring -- Periodicals
333.9516 - Journal URLs:
- http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1755-263X ↗
http://onlinelibrary.wiley.com/ ↗ - DOI:
- 10.1111/conl.12331 ↗
- Languages:
- English
- ISSNs:
- 1755-263X
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3418.068800
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British Library HMNTS - ELD Digital store - Ingest File:
- 10508.xml