Jeffrey Hutchings

Jeffrey Hutchings. Photo by Alexfern, Wikimedia Commons.

By Daniel Pauly.

Jeffrey Hutchings, a friend, colleague and mentor to many at the Institute for the Oceans and Fisheries, passed away in late January 2022 at 63 years of age. His eulogy in the Globe and Mail emphasized that he “firmly believed in the value of ensuring that public-policy decisions are guided by unbiased research.”[1]

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What really makes fish become sexually active

What really makes fish become sexually active

What really makes fish become sexually active

Mandarin fish mating. Image by Klaus Stiefel, Flickr.

Discounting anthropogenic-induced changes, the seasonally oscillating environments where long-lived fish hatch and grow remain more or less the same throughout the course of their lives. This means that the common explanation that states that fish become sexually active – or spawn for the first time – after experiencing certain environmental stimuli does not properly explain this phenomenon.

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