{"refrec":{"BRefID":12982,"RR":"<b>Penning de Vries, F.W.T.</b> (1972). Ademhaling van zeegrondeltjes: intern verslag over werkzaamheden verricht als doctorale studie in het tijdvak augustus 1968 - januari 1969 aan NIOZ te Texel voor Dhr. J. Kristensen onder supervisie van M. Fonds. <i>NIOZ-rapport</i>, 1972(14). Nederlands Instituut voor Onderzoek der Zee: Texel. 17 pp.","BEntID":12982,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>NIOZ-rapport</i>, 1972(14). Nederlands Instituut voor Onderzoek der Zee: Texel.  17 pp.","DocTypID":13,"DocType":"Reports","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Penning de Vries, F.W.T.","OrigTitleTranslFlag":1,"Authorstringtrunc":"Penning de Vries, F.W.T.","Englishabstract":"The respiratory rate of three related goby species, <i>Pomatoschistus minutus, P. lozanoi</i> and <i>P. microps</i>, was measured in relation to water temperature. Different methods were tried to measure standard respiration of the resting fish and active respiration of the swimming fish, in order to estimate the respiratory scope for activity in relation to temperature. The methods appeared to be unsuitable for measurements of active respiration, partly because the gobies clinged to the bottom and refused to swim in a proper way. Standard respiration was measured in the three species at water temperatures of 5°,6.5°,10°,15°, 20° and 25°C. There was no endogenous daily rhythm nor a marked group effect in the standard respiratory rate. The standard respiration at 14.5°C in relation to a decreasing oxygen content showed that the respiration remained independent of oxygen content of the water down to a level of 10-20% saturation. Finally the relation between body length and weight was measured for the three goby species.","AbstractOtherLang":"In een aantal experimenten is getracht de \"scope for activity\" (dit is het maximaal actief metabolisme minus het basaal metabolisme) vast te stellen voor de soorten <i>Pomatoschistus minutus, P. lozanoi</i> en <i>P. microps</i>, teneinde te zien of hieruit het verschil in verspreiding van de genoemde soorten te verklaren zou zijn. Het standaard metabolisme van de drie soorten werd bepaald bij 5°, 6.5°, 10°, 15°, 20° en 25°C in zeewater en de gevonden waarden werden vergeleken met uit de literatuur bekende gegevens, samenhangend met het standaard metabolisme werd vastgesteld dat geen endogeen dagritme uit de resultaten bleek, en ook een groepseffect kon niet worden aangetoond. De relatie tussen de zuurstofopname en het zuurstofgehalte van het water bij 14.5°C werd voor de drie grondelsoorten bepaald: afhankelijk van de soort bleek het standaard metabolisme onafhankelijk van het zuurstofgehalte tot 10 a 20% verzadiging. De gebruikte opstelling om het actief metabolisme te meten bleek hiervoor niet geschikt, deels door de nieuwe problemen die een grondvis met zich meebrengt, deels door de ongeschiktheid van het apparaat zelf. Het verband tussen de lengte en het gewicht van de drie soorten werd vastgesteld.","BibLvlCode":"MS","StandardTitle":"Ademhaling van zeegrondeltjes: intern verslag over werkzaamheden verricht als doctorale studie in het tijdvak augustus 1968 - januari 1969 aan NIOZ te Texel voor Dhr. J. Kristensen onder supervisie van M. 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