Reference Library: Crustaceans

Effects of ocean acidification on early life stages of shrimp (Pandalus borealis) and mussel (Mytilus edulis)

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

When larvae of blue mussels were kept in ocean acidification conditions predicted for 2100 (pH 7.6) there was no marked effect on fertilization, development, abnormalities, or feeding. However, although the mussel larvae were able to form shells, after two months of exposure they were 28 percent smaller than larvae raised ...

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’ ...

Impact of exposure to elevated pCO2 on the physiology and behaviour of an important ecosystem engineer, the burrowing shrimp Upogebia deltaura

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

A species of burrowing shrimp was able to tolerate ocean acidification conditions (pH 7.64) for 35 days. At a lower pH of 7.35, individuals experienced extracellular acidosis, suggesting they had little or no buffering capacity, although there was no evidence of negative impacts on metabolism, osmotic regulation, shell mineralogy, growth, ...

The effect of CO2 acidified sea water and reduced salinity on aspects of the embryonic development of the amphipod Echinogammarus marinus (Leach)

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

While ocean acidification may have some negative effects on the eggs of amphipods, exposure to low-salinity water is likely to affect the eggs more, based on ocean acidification trends projected for the next 300 years. (Laboratory study)

Future high CO2 in the intertidal may compromise adult barnacle Semibalanus balanoides survival and embryonic development rate.

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

In ocean acidification conditions (pH 7.7) embryos of an intertidal barnacle developed more slowly. Survival of adult barnacles dropped by 22 percent, and the mineral structure of adult shells changed. (Laboratory study)

Post-larval development of two intertidal barnacles at elevated CO2 and temperature

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

Post-larvae of an intertidal barnacle (Elminius modestus) grew more slowly under ocean acidification conditions, but there were no impacts on its shell calcium content and survival by either ocean acidification or warmer temperature. were observed in high CO2 but there were no impacts on shell calcium content and survival by ...

Relative influences of ocean acidification and temperature on intertidal barnacle post-larvae at the northern edge of their geographic distribution

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

Ocean acidification (pH 7.7) impaired growth and development of an intertidal barnacle (Semibalanus balanoides), but warmer temperature (+4 °C) did not. The mineral composition of the shells did not change with either ocean acidification or warmer temperature. The combination of reduced growth and maintained mineral content suggests that the barnacles ...

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