scholarly journals Leatherback sea turtle Dermochelys coriacea visual capacities and potential reduction of bycatch by pelagic longline fisheries

2008 ◽  
Vol 5 ◽  
pp. 249-256 ◽  
Author(s):  
MA Crognale ◽  
SA Eckert ◽  
DH Levenson ◽  
CA Harms
2016 ◽  
Vol 28 (6) ◽  
pp. 718-721 ◽  
Author(s):  
Kyle Donnelly ◽  
Thomas B. Waltzek ◽  
James F. X. Wellehan ◽  
Nicole I. Stacy ◽  
Maria Chadam ◽  
...  

2019 ◽  
Vol 168 ◽  
pp. 1-7 ◽  
Author(s):  
J. Díaz-Delgado ◽  
J.C. Gomes-Borges ◽  
A. Monteiro Silveira ◽  
J. Einhardt-Vergara ◽  
K.R. Groch ◽  
...  

1990 ◽  
Vol 63 (5) ◽  
pp. 1012-1024 ◽  
Author(s):  
Molly E. Lutcavage ◽  
Peter G. Bushnell ◽  
David R. Jones

2001 ◽  
Vol 122 (2) ◽  
pp. 139-147 ◽  
Author(s):  
David C Rostal ◽  
Janice S Grumbles ◽  
Kevin S Palmer ◽  
Valentine A Lance ◽  
James R Spotila ◽  
...  

2010 ◽  
Vol 67 (1) ◽  
pp. 42-57 ◽  
Author(s):  
Connie Y. Kot ◽  
Andre M. Boustany ◽  
Patrick N. Halpin

Sea turtle bycatch in pelagic longline fishing gear is an ongoing threat to the conservation of sea turtle populations. However, these bycatch events do not occur uniformly in space or time. Leatherback ( Dermochelys coriacea ) and loggerhead ( Caretta caretta ) bycatch rates reported in large fishing regions exhibited different degrees of interannual variability. Target catch and sea turtle bycatch in most regions displayed strong periodicity that corresponded to seasons (~365 days) and/or moon phase (~29 days). When trends in catch and bycatch rates were examined by month and moon phase, the significant periods of higher and lower catch and bycatch related to swordfish ( Xiphias gladius ), yellowfin tuna ( Thunnus albacares ), and sea turtle temporal distributions in foraging and spawning/nesting, oceanographic and prey conditions, and foraging behavior. Catch and bycatch rates tended to depend more on a seasonal rather than a lunar time scale, although there is likely an interaction between the two. These findings provide insights to the susceptibility of target catch and bycatch, regional and temporal patterns of fishing effort, and potential guidance for resource management and conservation.


2020 ◽  
Vol 161 ◽  
pp. 111726
Author(s):  
Michelle M. Dennis ◽  
Robert Poppenga ◽  
Anne Conan ◽  
Kristine Hill ◽  
Sabine Hargrave ◽  
...  

Author(s):  
Paulo C.R. Barata ◽  
Eduardo H.S.M. Lima ◽  
Márcio Borges-Martins ◽  
Juarez T. Scalfoni ◽  
Claudio Bellini ◽  
...  

Data from several sources and original data are presented regarding sightings, strandings and incidental captures of leatherback sea turtles (Dermochelys coriacea) on the Brazilian coast in a 33 year period, from 1969 to 2001. Two of the turtles were small juveniles (curved carapace length=40 cm and approximately 85 cm) and the remaining animals with known carapace size were large juveniles or adults. The origin of leatherbacks observed in Brazil is unknown. Several colonies in South America, including a Brazilian one, in the Caribbean, in western Africa and even in eastern South Africa could be the source of these turtles. The data presented here suggest that more effort should be directed to the assessment of the impact of fishing gear and marine pollution on leatherbacks and that systematic surveys on beaches should be maintained in order to monitor long term fluctuations in stranding levels and spatial stranding patterns. Genetic studies and satellite telemetry would be helpful in clarifying the origin of leatherbacks stranded or incidentally captured on the Brazilian coast.


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