The entirety of the Northwestern Hawaiian Islands population range, with the exception of the realm within eleven km around Kauaʻi and Niʻihau is an overlap zone between Northwestern Hawaiian Islands and pelagic false killer whales. Fishery interactions occur when false killer whales take bait and catch off fishing lines. This action can lead to incidental take—unintentional hooking and/or entanglement—in addition to critical harm and/or death.
Body temperature ranges from 36–37.2 °C (ninety six.8–99.0 °F), rising during exercise. The enamel are conical, and there are 14–21 in the higher jaw and 16–24 in the lower. There have been identified single circumstances of a False killer whale and Bottlenose dolphin mating and yielding a hybrid offspring referred to as “wolphin”.
Recovery Planning And Implementation
The major Hawaiian Islands insular false killer whale is the one false killer whale population protected under the ESA. Conducting subject work to address false killer whales’ spatial and temporal habitat use. The oldest estimated age of false killer whales is sixty three years for females and 58 years for males. NOAA Fisheries is dedicated to conserving and protecting false killer whales. Our scientists and companions use quite a lot of revolutionary strategies to review and defend this species.
- Because few false killer whales are kept in captivity, captive lifespans are unknown.
- False killer whales are hunted in other elements of the world, including Indonesia, Japan, and the West Indies.
- These insular populations overlap with an open-ocean or pelagic inhabitants.
& Thornton, M. False killer whale Pseudorca crassidens mass stranding at Long Beach on South Africa’s Cape Peninsula, 2009. Baird, R. W. False Killer whale, Pseudorca crassidens in Encyclopedia of Marine Mammals Vol. Baird, R. W. False Killer whale, Pseudorca crassidensin Encyclopedia of Marine Mammals(eds W. Perrin, B. Wursig, & J.G.M. Thewissen) . Strandings– they are susceptible to mass strandings, considered attributable to factors like noise pollution. Their close social bonds might trigger them to comply with one another into danger. To monitor ocean noise, NOAA has deployed acoustic monitoring stations throughout U.S. waters that together make up the Ocean Noise Reference Station Network.
It has been known to experience the wakes of large boats, which might put it at risk of hitting the boat propeller. In the Eastern Pacific, the false killer whale has been identified to focus on smaller dolphins throughout tuna purse-seine fishing operations; there are instances of attacks on sperm whales , and one instance against a calf of a humpback whale . Killer whales are known to prey on the false killer whale, and it also possibly faces a menace from large sharks, though there aren’t any documented situations. The false killer whale travels in massive pods, evidenced by mass strandings, normally consisting of 10 to 20 members, though these smaller groups can be part of bigger teams; it is highly social and can journey in teams of greater than 500 whales. These large groups may break up into smaller household groups of 4 to 6 members while feeding. Members stick with the pod long-term, some recorded as 15 years, and, indicated by mass strandings, share robust bonds with other members.