Ocean acidification disrupts induced defences in the intertidal gastropod Littorina littorea

  • Posted on: Mon, 06/13/2016 - 05:56
  • By: Anonymous

Normally, common periwinkles produce thicker shells in the presence of crab predators. This study found that they did not do so when living in acidified seawater for 15 days. The snails apparently compensated for their lack of defensive shell-building by moving more to avoid the crabs. In a ...

Larvae of the pteropod Cavolinia inflexa exposed to aragonite undersaturation are viable but shell-less

  • Posted on: Mon, 06/13/2016 - 05:56
  • By: Anonymous

When larvae of Mediterranean pteropods were cultured in pH 7.82 water, they had malformations and less shell growth. At pH 7.51, the larvae did not make shells but survived and showed normal development. In a natural setting, the smaller shells or lack of shells would have both ecological and biogeochemical ...

Reduced pH sea water disrupts chemo-responsive behaviour in an intertidal crustacean

  • Posted on: Mon, 06/13/2016 - 05:56
  • By: Anonymous

Ocean acidification conditions interfered with the chemoreception, or "smelling", that hermit crabs use to find shells and prey. The hermit crabs moved less, had lower flicking rates of their antennae (a ‘sniffing’ behavior in decapods), and were less successful in locating the odor source. (Laboratory study)

Reduced sea water pH disrupts resource assessment and decision making in the hermit crab Pagurus bernhardus

  • Posted on: Mon, 06/13/2016 - 05:56
  • By: Anonymous

Hermit crabs living in highly acidified seawater (pH 6.8) were less likely to leave a suboptimal shell in favor of an optimal shell. Those that did change shells took longer to do so. Crabs in acidified water also moved less and had lower flicking rates of their antennae (a ‘sniffing’ ...

Vulnerability of early life stage Northwest Atlantic forage fish to ocean acidification and low oxygen

  • Posted on: Mon, 06/13/2016 - 05:56
  • By: Anonymous

For three ecologically important estuarine fish species—inland silverside, Atlantic silverside, and sheepshead minnow—the early life stages were more sensitive to low oxygen than they were to low pH. The combination of low oxygen and low pH had the biggest effect. The results suggest that ocean acidification and hypoxia may reduce ...

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