Reference Library: Barnacles

Tolerance of juvenile barnacles (Amphibalanus improvisus) to warming and elevated pCO2

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

The Kiel Fjord (Baltic Sea) has large natural variations in carbon dioxide levels. When barnacles from the fjord were raised for 8-12 weeks in warmer seawater under ocean acidification conditions, their growth and condition did not change significantly. Warming increased the shell strength, but ocean acidification conditions had only weak ...

Food availability outweighs ocean acidification effects in juvenile Mytilus edulis: Laboratory and field experiments

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

Blue mussels grew and calcified 7 times faster in the Kiel Fjord (Baltic Sea), where low pH (ocean acidification) conditions prevailed, than at an outer fjord site where pH levels were higher In addition, the mussels were able to outcompete barnacles at the inner fjord, low pH site. Thus, blue ...

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 ...

Habitat traits and food availability determine the reponse of marine invertebrates to ocean acidification

  • Posted on: Wed, 03/30/2016 - 13:01
  • By: petert

Energy availability and local adaptation are major components in mediating the effects of ocean acidification (OA) on marine species. In a long-term study, we investigated the effects of food availability and elevated pCO2 (ca. 400, 1000 and 3000 μatm) on growth of newly settled Amphibalanus (Balanus) improvisus to reproduction, and on their offspring. We also ...

Effects of ocean acidification over the life history of the barnacle Amphibalanus amphitrite

  • Posted on: Wed, 03/30/2016 - 12:38
  • By: petert

Increased levels of atmospheric CO2 are anticipated to cause decreased seawater pH. Despite the fact that calcified marine invertebrates are particularly susceptible to acidification, barnacles have received little attention. We examined larval condition, cyprid size, cyprid attachment and metamorphosis, juvenile to adult growth, shell calcium carbonate content, and shell resistance to ...