Document of bibliographic reference 143227

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Calcium accumulation and regulation in Daphnia magna: links with feeding, growth and reproduction

Abstract

Calcium is involved in a wide variety of biological processes and has an important structural role in crustaceans. The present study aimed at exploring the possible link between Ca body concentrations and the ingestion rate and the role of soft tissue vs. total tissue Ca accumulation in Daphnia magna. D. magna was cultured for 21 days at different water Ca concentrations ranging from 3.4 to 32.5 mg/L Every week Ca body concentrations (soft and total tissues), ingestion rate, growth, survival and reproduction were measured. Daily, algal food that was not deficient in Ca was supplied. Ca in the soft tissues represented 8 to 26% of the total Ca body concentrations. The ratio Ca in soft tissue/Ca in total tissue was generally not influenced by the Ca exposure concentration but decreased with time, i.e., age (from an average of 0.24 at day 7 to 0.09 at day 21). During week 1, a 54% decrease in Ca body concentrations was observed in daphnids exposed in medium with 3.4 mg/L Ca compared to those exposed to 32.5 mg/L The concurrent decrease in ingestion rate was 14%. No significant differences among Ca treatments were observed during week 2 for ingestion rate and week 3 for calcium body concentrations. Also, no effects on growth and reproduction were observed, although these were expected at the lowest Ca concentration tested. It is hypothesised that Ca absorption from food in combination with an increased ingestion rate is used to maintain Ca homeostasis under Ca limiting conditions.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000261870400004

Bibliographic citation

Muyssen, B.T.A.; De Schamphelaere, K.A.C.; Janssen, C.R. (2009). Calcium accumulation and regulation in Daphnia magna: links with feeding, growth and reproduction. Comp. Biochem. Physiol., Part A Mol. Integr. Physiol. 152(1): 53-57. https://dx.doi.org/10.1016/j.cbpa.2008.08.031

Topic

Fresh water

Is peer reviewed

true