An ecological view of the tuna--dolphin problem: impacts and trade-offs

@article{Hall2004AnEV,
  title={An ecological view of the tuna--dolphin problem: impacts and trade-offs},
  author={Martin Hall},
  journal={Reviews in Fish Biology and Fisheries},
  year={2004},
  volume={8},
  pages={1-34}
}
  • M. Hall
  • Published 1 March 1998
  • Environmental Science
  • Reviews in Fish Biology and Fisheries
After a brief description of purse seining and the other methods used to catch yellowfin tuna in the eastern Pacific Ocean, some consideration s are made on the tuna--dolphin association and the solution of the problem of dolphin mortality in the eastern Pacific. The association has been observed in other ocenas, but the frequency of setting in the eastern Pacific is much greater. The mortalities of dolphins through fishing have declined from about 133 000 in 1986 to around 2600 in 1996. The… 
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References

SHOWING 1-10 OF 101 REFERENCES
INCIDENTAL MORTALITY OF DOLPHINS IN THE EASTERN TROPICAL PACIFIC, 1959-72
  • N. Lo
  • Environmental Science
  • 2004
The estimates of the number of dolphins killed annually from the beginning of the US. tuna purse seine fishery in the eastern tropical Pacific are used by the National Marine Fisheries Service in
INCIDENTAL MORTALITY OF DOLPHINS IN THE EASTERN TROPICAL PACIFIC, 1959·72
The estimates of the number of dolphins killed annually from the beginning of the US. tuna purse seine fishery in the eastern tropical Pacific are used by the National Marine Fisheries Service in
The tuna‐dolphin controversy in the eastern pacific ocean: Biological, economic, and political impacts
Since 1959 several million dolphins have been killed in the purse‐seine fishery for tunas in the eastern Pacific Ocean. Through combined efforts of the nations whose vessels participate in this
CHANGES IN SIZE OF THREE DOLPHIN (STENELLA SPP.) POPULATIONS IN THE EASTERN TROPICAL PACIFIC
  • D. Tim
  • Environmental Science
  • 2004
Dolphins from three populations, one of Stenella attenuata and two of S. longirostris, have been killed incidentally in the yellowfin tuna purse seine fishery in the eastern tropical Pacific, two
OBSERVER EFFECT ON INCIDENTAL DOLPHIN MORTALITY IN THE EASTERN TROPICAL PACIFIC TUNA FISHERY
Scientific observers placed aboard a sample of purse seine vessels collect data that are used to estimate the total number of dolphins killed incidentally in the eastern tropical Pacific tuna
Revised estimates of incidental kill of dolphins (Delphinidae) by the purse-seine tuna fishery in the eastern tropical Pacific, 1959-1972
dolphins (Delphinidae) by the purse-seine tuna fishery in the eastern tropical Pacific, 1959-1972 Abstract.-Dolphins (Delphinidae) have been killed incidentally by the purse-seine fishery for
The influence of some environmental variables on the apparent abundance of skipjack tuna, Katsuwonus pelamis, in the Eastern Pacific Ocean
ENGLISH: The abundance of skipjack larvae in the central and western Pacific approximately doubled for every 1°C increase in sea-surface temperature (SST) from 23°C to a maximum of about 29°C, and
Distribution of ship-following seabirds and their utilization of discards in the North Sea in summer
TLDR
Northern fulmars success rates decreased with the presence of larger ship-followers but were never high, and Northern gannet was the most successful species in consuming discards.
Review of geographical stocks of tropical dolphins (Stenella spp. and Delphinus delphis) in the eastern Pacific
TLDR
Division into management units was based on morphological stock differences and distributional breaks and several stock ranges are expanded or combined.
Estimates of Cetacean Abundance and Distribution in the Eastern Tropical Pacific
TLDR
Large-scale research vessel surveys were conducted annually from 1986 through 1990 to monitor the abundance of dolphin populations in the eastern tropical Pacific Ocean to give single estimates of abundance in the ETP for 24 stocks of cetaceans representing 19 species or genera.
...
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