Family Balaenopteridae: Only three species belonging to this family (commonly referred to as rorquals) have been reported in the study area, namely: the blue whale (Balaenoptera musculus), the Antarctic minke whale
(Balaenoptera bonaerensis) and the humpback whale (Megaptera novaeangliae) (Townsend, 1935; Aguayo et al.
Now acoustic recorders have revealed that the sound is in fact the underwater chatter of the Antarctic minke whale
, the BBC reported.
We observed 19 groups of cetaceans along a 1300-km search trajectory, with six species being identified: the humpback whale (Megaptera novaecmgliae, N = 9 groups), the fin whale (Balaenopteraphysahis, N = 1), the Antarctic minke whale
(Balaenoptera bomerensis, N = 1), the rough-toothed dolphin (Steno bredanensis, N = 1), the bottlenose dolphin (Tursiops truncatus, N = 2), and the killer whale (Orcinus orea, N = 1).
Southern hemisphere regions are under-represented, it said, except in the Antarctic where the International Whaling Commission leads surveys to estimate abundance of the Antarctic minke whale
The JARPAII objectives are "a) monitoring the Antarctic ecosystem (whale abundance trends and biological parameters; krill abundance and the feeding ecology of whales; effects of contaminants on cetaceans; cetacean habitat); b) modelling competition among whale species and future management objectives; c) elucidation of temporal and spatial changes in stock structure; and d) improving the management procedure for Antarctic minke whale
stocks" ("Research Results").
study disputes increase in Antarctic minke whale
Humans are also at risk since, unlike the Antarctic minke whale
, meat from Japanese coastal dolphins contains extremely high levels of bioaccumulating toxins such as heavy metals and organochlorines.
The bizarre quacking sound was detected to be coming from the chatters of the Antarctic minke whale
com/japan-whaling-mission-fleet-set-dispatch-antarctic-despite-international-criticism-2203465) new whaling program with the objective to hunt 3,000 Antarctic minke whales
over the next 10 years.
The three ships departed from the western port of Shimonoseki to join other ships to hunt up to 935 Antarctic minke whales
and up to 50 fin whales through March, the news agency said.
Our hypothesis is that the sound is produced by Antarctic Minke whales
, the last great whale species with as yet unidentified vocal repertoire.
The Japanese continue to harvest nearly 1,000 Antarctic minke whales
each year in the name of science, a dubious distinction to the protesters who have taken to the seas in the spotlight of television programs such as the Discovery Channel's "Whale Wars" to disrupt the practice.