Erythrocyte supply from the spleen of exercised carp |
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| Institution: | 1. Department of Biology and Aquaculture, Shimonoseki University of Fisheries, Yoshimi, Shimonoseki 759-65, Japan;2. Department of Fisheries, Faculty of Agriculture, Kyushu University 46-04, Hakozaki, Higashi-ku, Fukuoka 812, Japan;1. Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary;2. Division Infection and Immunity, The Roslin Institute and R(D)SVS, University of Edinburgh, Midlothian, United Kingdom;1. Department of Microbiology and Biotechnology, University of Hamburg, Hamburg, Germany;2. Department of Genomic and Applied Microbiology, University of Göttingen, Göttingen, Germany;3. Technology Platform Next Generation Sequencing, Heinrich Pette Institute, Hamburg, Germany;4. Gesellschaft für Marine Aquakultur mbH, Büsum, Germany;5. Institute of Animal Breeding and Husbandry, Kiel University, Kiel, Germany |
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| Abstract: | - 1.1. Weight and hemoglobin content of the spleen of 3-year-old carp under the resting condition showed seasonal change, and those in male fish were larger than those in females at any season.
- 2.2. Weight of the spleen of 3-year-old fish of both sexes (examined in August and October) and immature fish (examined in September) showed a decrease of more than 50% during severe exercise for 60 min. Hemoglobin content per unit body weight of the same fish showed a decrease of more than 80% with the same exercise.
- 3.3. Hematocrit value and hemoglobin concentration of the blood elevated 41 and 25%, respectively, in the 3-year-old male fish, and 20 and 11%, respectively, in the 3-year-old females during the exercise for 60 min.
- 4.4. Fifty percent and 30% of the hematocrit elevations are considered to have been caused by erythrocyte supply from the spleen in the male and female fish, respectively, and 80% of the elevations in the fish of both sexes can be explained by erythrocyte supply, erythrocyte swelling and water shift out of the blood vessel.
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