Thursday, October 23, 2008


In 2000 the International Whaling Commission admitted that Minke whale numbers in the Southern Ocean had probably been overestimated.
Research has shown these whales are not experiencing a population boom as argued by Japan.
"A female sperm whale may produce one calf every five years, after reaching sexual maturity at nine years. Males reach breeding age in their late twenties. It is not known how many calves a female may bear before reaching menopause or the rate of natural sperm whale mortality. A young whale may suckle from her mother for up to 15 years.

Scientists believe that it takes around 20 years on average for a female whale to replace itself with one mature female offspring. This does not account for the potential adverse impacts of new human-induced threats to whales such as bycatch, climate change, ozone depletion, marine pollution, ship strikes and underwater noise pollution."

"Economic aspects of renewable resource exploitation as applied to marine mammals(FAO Fish Ser., 5, Vol.3) indicated that the slow growth of marine mammals was in direct conflict with profits. Operational and capital costs were sufficiently high to make harvest rates that were biologically safe economically unsound."
~ Colin W. Clark.

The following cetaceans have been killed in 2008 by Japanese whalers.

*100 sei whales ( Balaenoptera borealis )
*59 minke whales ( Balaenoptera acutorostrata)
*50 bryde's whales ( Balaenoptera brydei)
*2 sperm whales. ( Physeter macrocephalus)
*551 minke whales ( Balaenoptera bonaerensis)
*8,396 Dalls porpoise (Phocoenoides dalli)
*7,916 Dalls porpoise (Phocoenoides truei )
*960 Bottlenose Dolphin (Tursiops truncatus)
*670 Striped dolphin (Stenella coeruleoalba)
*360 Pacific White-sided Dolphin (Lagenoryhnchus obliquidens)
*100 False Killer Whale (Pseudorca crassidens)
*835 Pantropical Spotted Dolphin (Stenella attenuata)
*532 Risso's Dolphin (Grampus griseus)
*339 Short-finned Pilot Whale (Globicephala macrorhynchus)
*66 Bairds beaked whale (Berardius bairdii)

No comments: