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In addition, beluga whales have undergone semen collection, [249] body temperature data collection, [251] reproductive tract examinations via transabdominal ultrasound, and endoscopic exams. [254] With new technology, the reproductive characteristics of both the female and male beluga whale have been accurately described and has benefited ...
As part of 1980s hunting regulations, quotas were set for Inuit harvests: the annual quota for belugas hunted in Cumberland Sound was 35 whales between 1992 and 2001, and was increased to 41 whales in 2002. Total landings between 1992 and 2001 fluctuated between 15 and 50, averaging 36 to 37 belugas per year. [1]
Articles relating to the Monodontidae, a cetacean family which comprises two living whale species, the narwhal and the beluga whale, and at least four extinct species, known from the fossil record. Beluga and Narwhal are native to coastal regions and pack ice around the Arctic Ocean .
The blue whale is the largest animal on Earth and likely the largest animal ever to have lived. While this ocean mammoth is dubbed “blue,” its color is more a reflection of the water it swims ...
In Olympic weightlifting, male records vary from 5.5× body mass in the lowest weight category to 4.2× in the highest weight category, while female records vary from 4.4× to 3.8×, a weight-adjusted difference of only 10–20%, and an absolute difference of about 30% (i.e., 492 kg vs 348 kg for unlimited weight classes; see Olympic ...
A 2010 study considered whales to be a positive influence to the productivity of ocean fisheries, in what has been termed a "whale pump." Whales carry nutrients such as nitrogen from the depths back to the surface. This functions as an upward biological pump, reversing an earlier presumption that whales accelerate the loss of nutrients to the ...
Orcas also prey on larger species such as sperm whales, grey whales, humpback whales and minke whales. [ 84 ] [ 40 ] On three separate occasions in 2019 orcas were recorded to have killed blue whales off the south coast of Western Australia, including an estimated 18–22-meter (59–72 ft) individual. [ 89 ]
Large mammals develop at an absolute slower rate compared to small mammals. Thus, the large mammal tend have longer gestation periods than small mammal as they tend to produce larger neonate. [ 32 ] Large mammals require a longer period of time to attain any proportion of adult mass compared to small mammals.