Resilience of the endangered sperm whale Physeter macrocephalus to foraging disturbance in the Gulf of Mexico, USA: a bioenergetic approach

2018 ◽  
Vol 589 ◽  
pp. 241-261 ◽  
Author(s):  
NA Farmer ◽  
DP Noren ◽  
EM Fougères ◽  
A Machernis ◽  
K Baker
Keyword(s):  
Gulf Of Mexico ◽  
Sperm Whale ◽  
Physeter Macrocephalus

scholarly journals Testing a passive deterrent on longlines to reduce sperm whale depredation in the Gulf of Alaska

2015 ◽  
Vol 72 (5) ◽  
pp. 1667-1672 ◽  
Author(s):  
Victoria O'Connell ◽  
Janice Straley ◽  
Joe Liddle ◽  
Lauren Wild ◽  
Linda Behnken ◽  
...  
Keyword(s):  
Sperm Whale ◽  
Gulf Of Alaska ◽  
Primary Objective ◽  
Collaborative Effort ◽  
Physeter Macrocephalus ◽  
Anoplopoma Fimbria ◽  
Acoustic Data ◽  
The Individual ◽  
And Control ◽  
Individual Fishing Quota

Abstract In Alaska, sperm whale (Physeter macrocephalus) depredation on longline sets has increased since implementation of the Individual Fishing Quota programme in 1995. A collaborative effort (SEASWAP) between longliners, scientists, and managers has undertaken research to evaluate this depredation with a primary objective to develop and test a passive deterrent that would reduce depredation without reducing catch rate of sablefish (Anoplopoma fimbria). Commercial longliners, fishing for their own sablefish quotas during the regular season, deployed beaded gear (25 mm lucite beads attached to gangions) with control gear and set recorders to collect acoustic data. Beaded and control gear were randomly assigned by skate quad (672 hooks) with 5 quads in each longline set. Acoustic recorders were used to document sperm whale creak–pause events, representative of depredation of the longline gear. Although there were more sablefish per skate quad on the beaded gear and there was a decrease in depredation events on the beaded gear compared with the control, neither effect was significant (p = 0.205 and 0.364, respectively). The SEASWAP project is testing other deterrent strategies including gear modifications and the establishment of a sighting network to improve avoidance.

scholarly journals Beached bachelors: An extensive study on the largest recorded sperm whale Physeter macrocephalus mortality event in the North Sea

PLoS ONE ◽  
2018 ◽  
Vol 13 (8) ◽  
pp. e0201221 ◽  
Author(s):  
Lonneke L. IJsseldijk ◽  
Abbo van Neer ◽  
Rob Deaville ◽  
Lineke Begeman ◽  
Marco van de Bildt ◽  
...  
Keyword(s):  
North Sea ◽  
Sperm Whale ◽  
Extensive Study ◽  
Physeter Macrocephalus ◽  
Mortality Event ◽  
The North ◽  
The North Sea

Coinfection and Vertical Transmission of Brucella and Morbillivirus in a Neonatal Sperm Whale (Physeter macrocephalus) in Hawaii, USA

2015 ◽  
Vol 51 (1) ◽  
pp. 227-232 ◽  
Author(s):  
Kristi L. West ◽  
Gregg Levine ◽  
Jessica Jacob ◽  
Brenda Jensen ◽  
Susan Sanchez ◽  
...  
Keyword(s):  
Vertical Transmission ◽  
Sperm Whale ◽  
Physeter Macrocephalus

Decadal assessment of the sperm whale population trends in the northern Gulf of Mexico using acoustics

2017 ◽  
Vol 142 (4) ◽  
pp. 2561-2561
Author(s):  
Kun Li ◽  
Natalia Sidorovskaia ◽  
Christopher Tiemann ◽  
Azmy S. Ackleh
Keyword(s):  
Gulf Of Mexico ◽  
Sperm Whale ◽  
Population Trends ◽  
Northern Gulf Of Mexico
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