Fish fathers exhibit signatures of 'baby brain' that may facilitate parental care behavior

Many new parents are familiar with terms like 'baby brain' or 'mommy brain' that hint at an unavoidable decline in cognitive function associated with the hormonal changes of pregnancy, childbirth, and maternal caregiving. A new study of parental care in stickleback fish is a reminder that such parenting-induced changes in the brain and associated shifts in cognition and behavior are not just for females — and they're not just for mammals either.

Read more

Safe mercury levels in Kotzebue Sound fish

A new analysis of Kotzebue Sound fish has found that mercury levels in a variety of its subsistence species are safe for unrestricted consumption. The study tested 297 subsistence-caught fish. The average mercury levels for each of the eight species were at levels considered safe by the Alaska Department of Health and Social Services.

Read more

Longest coral reef survey to date reveals major changes in Australia's Great Barrier Reef

An in-depth look at Australia's Great Barrier Reef over the past 91 years concludes that since 1928 intertidal communities have experienced major phase-shifts as a result of local and global environmental change, leaving few signs that reefs will return to their initial state in the near future. The long-term implications of these changes highlight the importance of avoiding phase shifts in coral reefs which may take many decades to repair, if at all.

Read more

Viruses as modulators of interactions in marine ecosystems

Viruses are mainly known as pathogens – often causing death. However, scientists are now showing how viruses influence the biology of living marine predators. This sheds new light on the general role of viruses in ocean ecosystems. For these insights, the scientists integrated a suite of innovative and high technology methods that have not been applied simultaneously in the study of marine ecosystems.

Read more