The physiological responses of blood during thermal adaptation in three freshwater fish species

Smit, G. L.; Hattingh, J.; Ferreira, Johan

doi:10.1111/j.1095-8649.1981.tb05819.x

Cited by 40 publications

(20 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, immature erythrocytes of teleosts are more effective in oxygen transport than when mature (Houston et al., 1996). Positive correlation between sea water temperature and haemopoiesis has been observed by Smit et al. (1981) in carp ( Cyprinus carpio ) and rainbow trout ( Oncorhynchus mykiss ), by Lie et al.…”

Section: Haematological Parametersmentioning

confidence: 97%

“…Furthermore, immature erythrocytes of teleosts are more effective in oxygen transport than when mature (Houston et al, 1996). Positive correlation between sea water temperature and haemopoiesis has been observed by Smit et al (1981) in carp (Cyprinus carpio) and rainbow trout (Oncorhynchus mykiss), by Lie et al (1989) in Atlantic cod (Gadus morhua), by Audet et al (1993) in G. morhua and American plaice (Hippoglossoides platessoides), and by Rauthan and Grover (1994) in hillstream fish (Barilius bendelisis). However, in the present study an increased haemopoiesis was observed in sea bass during the cold months obscured this correlation.…”

Section: Haematological Parametersmentioning

confidence: 98%

See 1 more Smart Citation

Seasonal variation in steroid hormones and blood parameters in cage-farmed European sea bass (Dicentrarchus labrax L.)

Kavadias¹,

Castritsi-Catharios²,

Dessypris

et al. 2004

J Appl Ichthyol

View full text Add to dashboard Cite

Summary For a period of 1 year, some blood parameters were evaluated on a monthly basis in a population of adult European sea bass (Dicentrarchus labrax L.) intensively reared in floating marine cages (Ionian Sea, Mediterranean). From April (13 months old) to July (16 months old) males (35–50%) and sexually indeterminate individuals were collected. From August to March (24 months old) only males were sampled. During this period the percentage of spermiated males was highest (100%) from November (20 months old) to January (22 months old). Plasma testosterone in males was inversely related to sunlight (h month−1) and was elevated between October and January, when males first achieved sexual maturity. Testosterone showed the highest value (0.49 ± 0.02 ng ml−1) in January and the lowest (0.09 ± 0.02 ng ml−1) in March. Haematocrit, red blood cell counts and haemoglobin concentration were elevated from November to March, being inversely related to sunlight. The two latter parameters were also inversely related to daily food intake. Haematocrit, red blood cell counts and haemoglobin concentration were highest in December [53 ± 1%, (5.36 ± 0.06) × 106 mm−3, 10.08 ± 0.14 g 100 ml−1, respectively] and lowest in June [35 ± 1%, (3.33 ± 0.05) × 106 mm−3, 6.47 ± 0.13 g 100 ml−1, respectively]. White blood cell counts were not correlated with sea water temperature, sunlight or daily food intake. They were highest in February [(8.45 ± 0.20) × 104 mm−3] and lowest in April [(6.07 ± 0.14) × 104 mm−3]. Total plasma protein concentration (4.88 ± 0.11–5.93 ± 0.10 g 100 ml−1) and mean cell volume (93.3 ± 0.9–105.5 ± 1.8 μm3) showed small fluctuations throughout the year. Sexual maturity appears to be a major factor that significantly affects haemopoiesis of D. labrax. This study contributes to the evaluation of normal levels of some blood parameters in European sea bass, which are helpful for the assessment of physiological status and health of this species.

show abstract

Section: Haematological Parametersmentioning

confidence: 97%

Section: Haematological Parametersmentioning

confidence: 98%

Seasonal variation in steroid hormones and blood parameters in cage-farmed European sea bass (Dicentrarchus labrax L.)

Kavadias¹,

Castritsi-Catharios²,

Dessypris

et al. 2004

J Appl Ichthyol

View full text Add to dashboard Cite

show abstract

“…Nos résultats pourraient confirmer cette dernière hypothèse puisque d'une façon générale, chez toutes les espèces, le taux de glucose sanguin paraît atteindre un maximum au début de la période estivale, soit au solstice d'été, et un minimum en novembredécembre, soit au solstice d'hiver. Cependant, l'augmentation plus ou moins précoce selon l'espèce, observée durant la période hivernale, peut être en relation avec les basses températures (4,8 O C en janvier, 2 O C en mars) (Love, 1970(Love, , 1980Smit et al, 1981).…”

Section: Glycémieunclassified

Recherches sur l'état physiologique des poissons de la retenue de Pareloup : données relatives à cinq années d'étude

et al. 1994

View full text Add to dashboard Cite

Résumé. -L'état physiologique des poissons a été estimé, pour une part, par l'évaluation mensuelle, au cours de quatre années (1984, 1989, 1990, 1991), de caractéristiques morphophysiologiques et de la composition somatique chez deux espèces différant par leur régime alimentaire : la perche et le gardon. Les valeurs obtenues ont démontré qu'il y a certaines années (1984, 1989), en été, un ralentissement de la croissance pondérale, une diminution ou un arrêt de l'accrétion protéique accompagné d'une modification de la concentration d'acides aminés ainsi qu'une chute de la teneur en lipides somatiques. Ces résultats indiquent nettement l'existence, dans la retenue de Pareloup, de conditions nutritionnelles plus ou moins favorables aux populations pisciaires, durant la période estivale. Par ailleurs, la détermination de paramètres sanguins, au cours d'un cycle annuel (1992)(1993), chez plusieurs espèces de poissons (brème, chevesne, brochet, sandre, perche) a révélé que si la valeur de l'hématocrite, la cholestérolémie, la triglycéridémie et la protéinémie sont, d'une manière générale, relativement stables, la glycémie varierait avec la photopériode et le taux d'insuline circulante serait en relation avec le cycle sexuel, pour la plupart des espèces.Mots-clés. -Poissons, retenue, composition somatique, paramètres sanguins.Abstract. -The physiological state of fish was first assessed by monthly evaluation in four years (1 984, 1989, 1990, 1991) of certain morphophysiological characteristics and of somatic composition in two species (perch and roach) with different dietary habits. In 1984 and 1989, a slowing down in weight gain, a decrease or an interruption in protein accretion associated with changes in amino acid contents, and a fall in somatic lipid levels were observed in summer. These results clearly point to dietary conditions 258 F. Vellas et al.in Pareloup Reservoir which are more or less favorable to fish populations during this period. In addition, blood parameter rneasurernents, carried out frorn 1992 to 1993 in various fish species (bream, chub, pike, pike-perch, perch), generally showed relatively unchanged values for hematocrit and plasma cholesterol, triglyceride and protein contents, while plasma glucose levels appeared dependent on the photoperiod and circulating insulin rates on the reproductive cycle, for most species.

show abstract

“…Protein synthesis rates have been found to be affected by temperature with Q~0 values ranging from 2 to 20 depending on the species, tissues or the temperature ranges (Haschemeyer et al 1979;Smith et al 1980;Fauconneau 1984). Drawing on data obtained by Kaushik (1981) and Fauconneau and Arnal (1985), it can be shown that an increase in temperature increases intake, protein synthesis n 10"C 180C Fig.…”

Section: Qualitative Changesmentioning

confidence: 93%

Environmental effects on feed utilization

Kaushik

1986

Fish Physiol Biochem

View full text Add to dashboard Cite

Both external and internal factors affect the response of fish to variations in dietary quantity and quality. An attempt is made to review major, recent studies on the series of intermediate steps (intake, digestion, metabolism, excretion and retention) involved in the global response of fish to environmental changes. Among these external factors, greater attention is however devoted to those that are the most important natural effectors within the aquatic environment: temperature, ambient oxygen and salinity. The changes brought about by a change in temperature at different levels of nutrient utilization have been studied to a great extent in the recent past. As temperature affects in the first instance, the voluntary food intake, a discussion on current nutrient requirement data should preferably be dealt with in absolute terms. While critical levels of oxygen below which growth is hindered are sufficiently defined for many species, precise data on the direct effects of oxygen deficiency on nutrient utilization are still fragmentory. With regard to salinity, a distinction between stenohaline and euryhaline species and a knowledge of the physiological mechanisms corresponding to their life cycles are required before attempting comparative analyses. Within euryhaline species, best performances are noted at salinities isotonic to the internal medium. Despite accumulating evidence on the effects of cyclical phenomena, the chronobiological approach to fish culture remains practically unexplored.

show abstract

The physiological responses of blood during thermal adaptation in three freshwater fish species

Cited by 40 publications

References 9 publications

Seasonal variation in steroid hormones and blood parameters in cage-farmed European sea bass (Dicentrarchus labrax L.)

Seasonal variation in steroid hormones and blood parameters in cage-farmed European sea bass (Dicentrarchus labrax L.)

Recherches sur l'état physiologique des poissons de la retenue de Pareloup : données relatives à cinq années d'étude

Environmental effects on feed utilization

Contact Info

Product

Resources

About