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Le milieu intérieur et ses variations durant la mue de puberté chez Sphaerom serratum (Fabricius, 1787) (Crustacea, Isopoda, Flabellifera) = The coelomic fluid composition and its variations during the puberty-molt in Sphaeroma serratum (Fabricius, 1787) (Crustacea, Isopoda, Flabellifera)
Charmantier, G. (1977). Le milieu intérieur et ses variations durant la mue de puberté chez Sphaerom serratum (Fabricius, 1787) (Crustacea, Isopoda, Flabellifera) = The coelomic fluid composition and its variations during the puberty-molt in Sphaeroma serratum (Fabricius, 1787) (Crustacea, Isopoda, Flabellifera). Cah. Biol. Mar. 18(1): 7-29
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094, meer
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  • Charmantier, G.
Abstract
    In S. serratum, the haemlymph composition varies during the puberty-molt cycle. Several features can be observed: an increase of the concn of organic substances during premolt and its decrease during postolot; a rise of the K+ ,Ca2+ , Mg2+ concns during premolt and its lowering during postmolt; a decrease of the Na+ and Cl- concns during premolt and its increase during postmolt; a rise of the osmotic pressure of haemolymph during premolt and its lowering during postmolt (these changes are weak); a little decrease of the water content during premolt and its sharp increase during postmolt; a doubling of the rate of internal water exchange at ecdysis. Though osmotic pressure is mainly assumed by Na+ and Cl-, its variations during the pugerty-molt cycle seem to result from the K+ ,Ca2+, Mg2+ and concn of organic substances.
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