Size and growth rate for sharks determined by their habitat

How big a young shark grows up to be, and how fast it grows, may depend on where it feeds. Researchers observed a population of juvenile sharks in a nursery that contained both a high-risk habitat (open seagrass beds) and a low-risk one (protected mangroves). Sharks that preferred to feed in the mangroves were generally smaller and grew […]

Introducing guppies for mosquito control risks harming biodiversity

Guppy fish were introduced in several cities as a way to combat carrier mosquito populations from spreading the dengue fever and the Zika virus. But new research out of University of Victoria recommends against this practice. Authors outline four arguments to support their reasoning. They say there’s limited evidence supporting the effectiveness of guppies as […]

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