Seasonal variations in hematocrit, red cell hemoglobin and nucleoside triphosphate concentrations, in the european eel Anguilla anguilla

Andersen, Niels A.; Laursen, Jesper; Lykkeboe, Gunnar

doi:10.1016/0300-9629(85)90271-3

Cited by 31 publications

(13 citation statements)

References 10 publications

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“…Little has been documented on the hematology of A. anguilla. Hematological values measured in the present study in control eels are in good agreement with those reported by others on the same species (Andersen et al, 1985;Santos and Hall, 1990). The hematological "ndings after eel exposure to molinate reveal a toxic manifestation.…”

Section: Che and Hematological Parameters As Biomarkers In Fishsupporting

confidence: 92%

Cholinesterase Activity and Hematological Parameters as Biomarkers of Sublethal Molinate Exposure in Anguilla anguilla

Sancho

Cerón

Ferrando

2000

Ecotoxicology and Environmental Safety

110

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Section: Che and Hematological Parameters As Biomarkers In Fishsupporting

confidence: 92%

Cholinesterase Activity and Hematological Parameters as Biomarkers of Sublethal Molinate Exposure in Anguilla anguilla

Sancho

Cerón

Ferrando

2000

Ecotoxicology and Environmental Safety

110

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“…Similarly, a large resting vagal tone occurs in goldfish acclimated to 20Њ-25ЊC (Cameron 1979), but none is found in 11Њ-15ЊC-acclimated goldfish (Randall 1966). The difference between common carp and rainbow trout in extrinsic control of f H could be related to rainbow trout remaining cold-active, whereas carp and eels (Andersen et al 1985) become cold-dormant and stop feeding in the winter. Thus, during the winter months, when activity must be limited to conserve energy, carp appear to downregulate Q and f H .…”

Section: Normoxic Cardiovascular Controlmentioning

confidence: 84%

Regulation of the Cardiorespiratory System of Common Carp (Cyprinus carpio) during Severe Hypoxia at Three Seasonal Acclimation Temperatures

Stecyk

Farrell²

2006

Physiological and Biochemical Zoology

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Little is known of the cardiorespiratory control mechanisms utilized by hypoxia-tolerant teleost fish to tolerate prolonged periods (h) of near anoxic exposure. Here, we report on the cardiorespiratory control mechanisms of the common carp Cyprinus carpio L. during normoxia and prolonged, severe hypoxic (<0.3 mg O(2) L(-1)) exposure at acclimation temperatures of 5 degrees C, 10 degrees C, and 15 degrees C. Through serial intra-arterial injections of alpha - and beta -adrenergic, cholinergic, and purinergic antagonists while measuring cardiac output (Q), heart rate (f(H)), ventral aortic blood pressure, and respiration rate, we established that autonomic cardiovascular and respiratory control was preserved during severe hypoxia at all three acclimation temperatures and contributed to downregulation of cardiorespiratory activity. Specifically, inhibitory cholinergic tone mediated up to 76% reductions in f(H) and Q during hypoxia, whereas the accompanying arterial hypotension was attenuated by an upregulation of an alpha -adrenergically mediated peripheral vasoconstriction. Despite the overall cardiac downregulation, a large, stimulatory cardiac beta -adrenergic tone was present during prolonged, severe hypoxia, possibly to protect the heart from attendant acidotic conditions. Purinergic blockade, following alpha -adrenergic and cholinergic antagonists, showed that the hypoxic ventilatory depression, which reversed the 2.3- to 7.7-fold increases in respiration rate that occurred with the onset of hypoxia, was a result of purinergic inhibition at all three acclimation temperatures. In contrast, purinergic inhibition of cardiac activity during hypoxia might be important only at 5 degrees C. Finally, given that cardiac power output was reduced 72%-87% during prolonged, severe hypoxia and that glycolysis yields approximately 94% less ATP per mole glucose than oxidative phosphorylation, it seems unlikely that the common carp sufficiently reduces its cardiac energy demand to a level to preclude activation of a partial Pasteur effect. This means that glycogen stores will be used and waste products will accumulate at faster rates, a finding that may help explain why the common carp cannot tolerate such extended periods of severe hypoxia (weeks to months) at cold acclimation temperatures as the freshwater turtle, which is able to reduce its cardiac energy demand to a level that does not require a Pasteur effect and also blunts autonomic cardiovascular control.

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“…In order to interpret the hematological and biochemical analyses on fish which rapidly respond to environmental conditions; blood sampling and laboratory techniques (Hardig and Höglung, 1984), seasonal changes (Andersen et al, 1985;Cech et al, 1982;Hardig and Höglung, 1984), size and ontogenesis, genetic features (Murray, 1984), sex and population density (Atkinson and Juddy, 1978;Murray, 1984), geographical distribution (Blaxhal and Daisley, 1973;Bridges, 1984), habitat, starvation, stress, pH, water and transportation (Wilhem Filho et al, 1992) should also be taken into consideration.…”

Section: şEvket Kandemir 1mentioning

confidence: 99%

Untitled

Kandemir¹,

Örün²,

Talas³

et al. 2010

Turk. J. Fish. Aquat. Sci.

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In this study, hematological and biochemical investigations were carried out on Cyprinus carpio, Leuciscus cephalus, Capoeta trutta ve Capoeta capoeta umbla fish species living in Sultansuyu Dam Lake (Malatya). The physical, chemical and microbiological features of the reservoir were specified and heavy metal analyses were also conducted. As a result of hematological investigation, a statistical increase of P<0.05 in total leukocyte count, and a decrease of P<0.05 in erytrocyte, hemoglobin and hematocrit values were observed. With respect to microbiological analysis, the presence of Enterococcus shows the drainage of domestic wastes into the reservoir. With water analyses, it was found out that the water quality was second rate and the sulphur content in the water was above standard levels. The existence of large amount of sulphur was presumed to be the result of apricot processing. Significant heavy metal pollution was not observed. Sultansuyu (Malatya) Baraj Gölünde Yaşayan Bazı Ekonomik Balık Türleri Üzerinde Biyokimyasal ve Limnolojik İncelemeler ÖzetBu çalışmada Sultansuyu (Malatya) Baraj Gölü'nde yaşayan Cyprinus carpio, Leuciscus cephalus, Capoeta trutta ve Capoeta capoeta umbla balık türlerinde hematolojik ve biyokimyasal inceleme yapılmıştır. Ayrıca gölün fiziksel, kimyasal, mikrobiyolojik ve ağır metal analizleri yürütülmüştür. Hematolojik incelemede total lökosit sayılarında istatistiksel olarak bir artma P<0,05, eritrosit hemoglobin ve hematokrit değerlerinde bir azalma P<0,05 olduğu saptanmıştır. Mikrobiyal analizde Enterococcus varlığı evsel atıkların drenaj edildiği göstermektedir. Su analizlerinden suyun ikince kalite su olduğu ve suyun kükürt miktarının standartların üstünde bulunduğu belirlenmiş olup, kaynağının yörede yapılan kayısıcılıktan kaynaklandığı düşünülmüştür. Ağır metal yönünden önemli bir kirliliğe rastlanılmamıştır.

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Seasonal variations in hematocrit, red cell hemoglobin and nucleoside triphosphate concentrations, in the european eel Anguilla anguilla

Cited by 31 publications

References 10 publications

Cholinesterase Activity and Hematological Parameters as Biomarkers of Sublethal Molinate Exposure in Anguilla anguilla

Cholinesterase Activity and Hematological Parameters as Biomarkers of Sublethal Molinate Exposure in Anguilla anguilla

Regulation of the Cardiorespiratory System of Common Carp (Cyprinus carpio) during Severe Hypoxia at Three Seasonal Acclimation Temperatures

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