Yellowstone Cutthroat Trout
| Yellowstone Cutthroat Trout | ||||||||||||
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Yellowstone Cutthroat Trout |
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| Oncorhynchus clarkii bouvieri | ||||||||||||
| ( Jordan & Gilbert , 1883) |
The Yellowstone Cutthroat Trout ( Oncorhynchus clarkii bouvieri ) is a subspecies of the Cutthroat Trout ( Oncorhynchus clarkii ), a freshwater fish of the salmon family . The Yellowstone Cutthroat Trout is found exclusively in the larger Yellowstone ecosystem , with Yellowstone National Park as its center. That is why it is very popular with anglers there . The Yellowstone Cutthroat Trout prefers reasonably clear, cold streams, rivers and lakes.
features
The cutthroat trout differs from other types of trout by the distinctive orange-red slashes on the underside of the jaw. In contrast to other subspecies of the cutthroat trout, the yellowstone cutthroat trout stands out due to its light brown to orange color and its medium-sized black spots on the rear of the fish. It is rather darker than other subspecies.
protection
The number of Yellowstone Cutthroat Trout has decreased noticeably. Reasons include overfishing , mating with similar species, the introduction of American Arctic char into the spawning grounds of Yellowstone Cutthroat Trout in the 1970s, and disease. In 2004, environmentalists urged the US Fish and Wildlife Service to put the Yellowstone Cutthroat Trout on the endangered species list. The authority rejected the request on the grounds that the necessary steps had already been taken to sustainably preserve this subspecies. All Yellowstone Cutthroat Trout caught within Yellowstone National Park must be released back into the water. Outside the park, different guidelines apply, adapted to the respective living conditions of the fish. The National Park Service also catches thousands of Arctic char in Yellowstone Lake each year ; In 2006 over 60,000 and from 1998 to 2006 a total of 198,000 animals. The Yellowstone Cutthroat Trout population is still declining.
By 2014 the protective measures showed clear success. The lead scientist said the trout "got the corner" and the numbers were pointing up. The stock of the char is declining, while the number of trout among the juvenile fish is increasing significantly.
Individual evidence
- ↑ Casper Star Tribune.net: Page no longer available , search in web archives: Trout in Trouble
- ^ Trout Unlimited: 'Turning the Corner' on Yellowstone Lake , May 6, 2014
Web links
- Yellowstone Coalition: Yellowstone Cutthroat Trout ( Memento from May 25, 2008 in the Internet Archive )