{"refrec":{"BRefID":12984,"RR":"<b>van Deijl, L.</b> (1972). Aspecten van de osmo- en ionenregulatie van de fluwelen zwemkrab, <i>Macropipus puber</i>. <i>NIOZ-rapport</i>, 1972(15). Nederlands Instituut voor Onderzoek der Zee: Texel. 32 pp.","BEntID":12984,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>NIOZ-rapport</i>, 1972(15). Nederlands Instituut voor Onderzoek der Zee: Texel.  32 pp.","DocTypID":13,"DocType":"Reports","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"van Deijl, L.","OrigTitleTranslFlag":1,"Authorstringtrunc":"van Deijl, L.","Englishabstract":"The osmotic concentrations of blood and muscle extracts of the swimming crab <i>Macropipus puber</i> are compared with those in external medium using freezing point determination, after acclimation to different salinities. <i>M. puber</i> appeared able to tolerate salinities ranging from approx. 140°/oo to 43°/oo. Within this range the osmotic concentrations of blood and tissue follow external concentrations, so that this crab is an osmoconformer. The effect of temperature was studied following acclimation of the crabs to 5°C and 15°C. Apparently the tissue concentrations show stronger regulation at the higher temperature (15°C). The water content was determined by measuring the fresh and dry weight of muscle tissue. At 15°C it appeared independent of salinity, while at 5°C the water content increased with decreasing salinity. The contribution of electrolytes and organic compounds to the total osmotic concentration of these body fluids were determined using amongst others conductivity measurements. While these components account for approximately 2/3 of the tissue concentrations, the blood osmotic concentrations is largely due to electrolytes. 5. The time-course of adaptation of osmotic concentration muscles to a change in blood osmolarities, evidence an intracellular isosmotic regulatian. In order to determine in how far the measured tissue homogenate concentrations are representative of intracellular concentrations, inulin-injection experiments were performed, which indicate that homogenates include about 9.5% blood.","AbstractOtherLang":"Met behulp van de vriespuntsdalingmethode zijn de osmotische concentraties van het bloed en de weefselvloeistof van <i>Macropipus puber</i> vergeleken met die van het medium. Hiertoe werden de krabben aan verschillende zoutgehalten geacclimatiseerd <i>M. puber</i> blijkt zoutconcentraties van ong. 14°/oo tot ong. 43°/oo te tolereren. Binnen dit traject past de osmotische concentratie van het bloed en van het weefsel zich aan een veranderde uitwendige osmotische concentratie aan, waarmee deze krab tot de osmoconformers gerekend kan worden. Een eventueel temperatuurseffect werd nagegaan door deze acclimatie aan verschillende zoutgehalten zowel bij 5°C als bij 15°C te laten verlopen. Er zijn aanwijzingen voor een betere regulatie van de weefselvloeistof bij de hogere temperatuur van l5°C. Met de bepaling van het nat-en drooggewicht van het weefsel, werd het watergehalte hiervan berekend. Bij 15°C bleef dit konstant bij veranderend zoutgehalte en bij 5°C nam het watergehalte toe bij afnemend zoutgehalte in het milieu. Het aandeel van respektievelijk electrolyten en organische componenten in de totaalosmotische concentraties van de vloeistoffen werd nagegaan onder andere met behulp van geleidbaar heidsmetingen. In het weefsel bepalen zij hier gezamenlijk ong.2/3 deel van, terwijl de bloedosmotische concentratie voor het grootste deel tot stand komt door de aanwezige electrolyten. De aanpassing van de weefselvloeistof aan een veranderde bloed-osmotische concentratie betreft een intracellulair isosmotisch regulatiemechanisme. Om na te gaan in hoeverre de gemeten waarden uit de weefselhomogenaten. representatief waren voor de werkelijke osmotische concentraties van het weefsel werd met behulp van inuline globaal aangetoond dat het weefselpreparaat ong. 9.5% bloed bevatte.","BibLvlCode":"MS","StandardTitle":"Aspecten van de osmo- en ionenregulatie van de fluwelen zwemkrab, <i>Macropipus puber</i>","OrigTitleLangCode":"nl","OrigTitleLangCodeExtended":"dut","OrigTitleLangID":41,"DateLastModified":{"date":"2025-07-22 01:33:06.175990","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":null,"MonPub":1972,"DateUpdate":"2025-07-15","DateCreate":"2001-07-06","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":null,"monrec":{"MonID":12984,"ISBN":null,"PubliDate":1972,"IssueDate":null,"Volume":"1972","Issue":"15","Pagination":"32","Place":"Texel","Edition":null,"BRefXtra":null,"BRefXtraRR":null,"SerID":5697,"SerRR":"NIOZ-rapport. 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