Plasma FITC-dextran exchange between the primary and secondary circulatory systems in the Atlantic cod, <Emphasis Type="Italic">Gadus Morhua</Emphasis> |
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| Authors: | Claes Fischer John Fleng Steffensen |
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| Institution: | (1) Marine Biological Laboratory, University of Copenhagen, Strandpromenaden 5, Helsingor, 3000, Denmark |
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| Abstract: | Fluorescein isothiocyanate dextran (FITC-dextran) exchange between the primary (PCS) and secondary (SCS) circulatory systems
in the Atlantic cod, Gadus morhua (Linnaeus, 1752), were studied using 20-kDa (n = 4) and 500-kDa (n = 4) FITC-dextran. In order to give a qualitative perspective of the general connection between the PCS and SCS, distribution
of plasma-borne tracers (FITC-dextran) in the PCS and SCS were examined. In this study, a total of eight cod were cannulated
in the ventral aorta (PCS) and dorsal cutaneous vessel (SCS), for investigation of FITC-dextran disappearance in the PCS and
its subsequent appearance in the SCS. FITC-dextran of both sizes was found to be in equilibrium between the PCS and SCS in
less than 20 min. This indicates a profound connection between the PCS and SCS in the Atlantic cod, and rapid mixing of tracers
between the PCS and SCS. The destination of the injected 500-kDa FITC-dextran was also examined, and it was observed that
of the 500-kDa FITC-dextran lost from the primary and secondary vascular systems, 63.0 ± 9.2% could be recovered from the
liver |
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| Keywords: | Secondary circulation Plasma exchange Gadus morhua FITC-dextran |
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