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"Wolves, Food"
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Rare Wolves Lick Nectar from Flowers
\"Although they are called wolves, Ethiopian wolves are not 'true wolves' like grey wolves. They are smaller and have long, narrow heads and red and white fur. Recently, scientists captured footage of these wolves licking nectar from flowers of red hot poker plants. This is the first recording of a carnivore drinking nectar. A carnivore is an animal that consumes other animals for energy. Scientists set up cameras in the Bale Mountains of Ethiopia to learn more about these rare wolves. In the video, they saw six wolves licking flowers. The wolves licked the bottom of the flowers, where most of the nectar is stored.\" (News Currents) Read more about Ethiopian wolves.
Magazine Article
The Controversial Wolf Hunts
\"Right now in Minnesota and Wisconsin, hunters are hunting and killing wolves. These states have recently started a wolf-hunting season. They are not the only states where hunting wolves is legal--Alaska, Wyoming, and Montana also allow this. But the wolf hunts in these two states are especially controversial. Wolves were once found in every U.S. state except Hawaii, and all over Canada. Due to hunting and human settlement, however, wolf populations almost disappeared in many places. Now, wolves are quite rare in most of the United States.\" (NewsCurrents Read to Know) Read more about the endangered status of wolves.
Magazine Article
Lone Wolf?
\"Wolves play a vital role in their food web. A food web shows how energy flows through an ecosystem. Every organism needs energy in order to live. Plants get energy from the sun, for example. Then some animals, like elk, eat the plants. Then some animals, like wolves, eat the elk.\" (National Geographic Explorer!) Learn how wolves hunt in packs. Also, read about food webs.
Magazine Article
Anthropogenic food resources sustain wolves in conflict scenarios of Western Iran
This study was funded by the Iranian National Science Foundation (INSF), the National Geographic Society (grant GEFNE128-14toJVL-B) and the UK Wolf Conservation Trust. J.V.L.B. was supported by a Ramon&Cajal research contract (RYC-2015-18932) from the Spanish Ministry of Economy, Industry and Competitiveness.
Journal Article
The genomic signature of dog domestication reveals adaptation to a starch-rich diet
Whole-genome resequencing of dogs and wolves helps identify genomic regions that are likely to represent targets for selection during dog domestication.
When dogs homed in on humans
Whole-genome resequencing of dogs and wolves has been used to identify genomic regions likely to represent targets for selection during dog domestication. Of 36 genes identified, more than half are brain-related including some linked to behavioural changes thought central to dog domestication. Surprisingly, ten genes that show signals of selection are important in starch digestion and fat metabolism — and modern dogs fare better than carnivorous wolves on a diet rich in starch. This evidence of dietary change suggests that dogs may have found a new ecological niche, scavenging waste from human settlements established during the agricultural revolution.
The domestication of dogs was an important episode in the development of human civilization. The precise timing and location of this event is debated
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and little is known about the genetic changes that accompanied the transformation of ancient wolves into domestic dogs. Here we conduct whole-genome resequencing of dogs and wolves to identify 3.8 million genetic variants used to identify 36 genomic regions that probably represent targets for selection during dog domestication. Nineteen of these regions contain genes important in brain function, eight of which belong to nervous system development pathways and potentially underlie behavioural changes central to dog domestication
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. Ten genes with key roles in starch digestion and fat metabolism also show signals of selection. We identify candidate mutations in key genes and provide functional support for an increased starch digestion in dogs relative to wolves. Our results indicate that novel adaptations allowing the early ancestors of modern dogs to thrive on a diet rich in starch, relative to the carnivorous diet of wolves, constituted a crucial step in the early domestication of dogs.
Journal Article