The importance of dietary calcium consumption in two species of semi-terrestrial grapsoid crabs A importância do consumo de cálcio na dieta de duas espécies de caranguejos grapsóides semi-terrestres

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dc.contributor.authorZanotto F.P.
dc.contributor.authorPinheiro F.
dc.contributor.authorSa M.G.
dc.date.accessioned2024-03-13T01:35:45Z
dc.date.available2024-03-13T01:35:45Z
dc.date.issued2009
dc.description.abstractCalcium (Ca) is essential for crustaceans, due to calcium carbonate (CaCO3) deposition in the new exoskeleton to harden it. The purpose of this work was to study short term Ca balance in terms of dietary Ca ingestion in two phylogenetically related crabs (Superfamily Grapsoidea) showing different degrees of terrestrial adaptations: Sesarma rectum Randall, 1840 and Neohelice granulata (Dana, 1851). Dietary Ca ingestion was studied using purified diets with different Ca concentrations (0, 2.2 and 6.66% Ca), together with measurements of Ca excretion and Ca hemolymph levels. The results showed that both crabs had the same response to foods containing different levels of Ca, with both species eating more of the high Ca diet. However, S. rectum consumed more per mg body mass at all Ca concentrations (6 mg.g-1 for S. rectum against 3 mg.g-1 for N. granulata). Both species excreted/egested Ca differently: S. rectum excreted Ca proportionally to ingestion, whereas N. granulata maintained constant faecal Ca output at all dietary Ca levels. Moreover, Ca hemolymph levels for crabs fed the different diets were independent of dietary Ca. In conclusion, both S. rectum and N. granulata seem to regulate the consumption of diets containing more Ca, which suggests a fine balance for Ca intake.
dc.description.firstpage295
dc.description.issuenumber3
dc.description.lastpage300
dc.description.volume99
dc.identifier.doi10.1590/s0073-47212009000300011
dc.identifier.issn0073-4721
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37420
dc.relation.ispartofIheringia - Serie Zoologia
dc.rightsAcesso Aberto
dc.subject.otherlanguageDiet
dc.subject.otherlanguageFeeding behavior
dc.subject.otherlanguageNeohelice granulata
dc.subject.otherlanguageSemi-terrestrial crabs
dc.subject.otherlanguageSesarma rectum
dc.titleThe importance of dietary calcium consumption in two species of semi-terrestrial grapsoid crabs A importância do consumo de cálcio na dieta de duas espécies de caranguejos grapsóides semi-terrestres
dc.typeArtigo
local.scopus.citations6
local.scopus.eid2-s2.0-76249131517
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=76249131517&origin=inward
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