Glycoconjugates Study in Surface Secretions of a Fresh Water Edible Catfish, Clarias gariepinus in Response to Clove Oil Anaesthesia: Experimental Investigation

2021 ◽  
pp. 26-36
Author(s):  
Ajai Kumar Singh
Keyword(s):  
Experimental Investigation ◽  
Fresh Water ◽  
Clarias Gariepinus ◽  
Clove Oil

scholarly journals Effects of acclimation on the haematological indices of different groups of fresh water teleosts

2015 ◽  
Vol 7 (1) ◽  
pp. 5-9 ◽  
Author(s):  
K. Roy George ◽  
N. A. Malini ◽  
D. Rajasree
Keyword(s):  
Fresh Water ◽  
Hematological Parameters ◽  
Clarias Gariepinus ◽  
Stress Factors ◽  
Basic Knowledge ◽  
Hematopoietic Tissue ◽  
Group Iii ◽  
Enhanced Production ◽  
Group I ◽  
Group Ii

Hematological parameters have been recognized as valuable tools for monitoring fish health. The aim of the present study was to obtain a basic knowledge of the hematological responses of different groups of fresh water teleosts during acclimation period. Haematological analysis was carried out in three different groups of teleosts namely Group I: Heteropneustes fossilis and Clarias gariepinus (Siluriformes), Group II: Anabas testudineus and Channa striatus (Perciformes), Group III: Labeo rohita and Cyprinus carpio (Cypriniformes). In all groups of teleosts, RBC and Hb were significantly (p<0.05) decreased after 7 days of captivity in response to stress factors raised in capture, handling and sampling procedure. WBC was found to be significantly (p<0.05) increased in group I (Siluriformes), group II (Perciformes) and group III (Cypriniformes) of teleosts after 7 days of captivity due to enhanced production of leucocytes in the hematopoietic tissue of the kidney and the spleen. RBC count and WBC count were found to be higher in H. fossilis and C. gariepinus than other groups of teleosts due to their active predacious nature. Hb values were high in 2nd group (Perciformes) consisting of A. testudineus and C. striatus by virtue of their possessions of accessory respiratory organs. PCV, MCV and MCHC were significantly (p<0.05) increased in three groups of teleosts during acclimation and values were high in second group of consisting of A. testudineus and C. striatus. MCH was higher in 3rd group of fishes consisting of L. rohita and C. carpio.

I.—An Experimental Investigation of the Temperature Changes occurring in Fresh-Water Lochs.

1908 ◽  
Vol 28 ◽  
pp. 2-20 ◽  
Author(s):  
E. M. Wedderburn
Keyword(s):  
Experimental Investigation ◽  
Fresh Water ◽  
Laboratory Experiments ◽  
Present Communication ◽  
Temperature Changes ◽  
Previous Communication ◽  
Temperature Observations ◽  
Made In

In a previous communication published in the Transactions of the Society (vol. xlv., part ii., p. 407) I attempted to discuss the temperature observations made in Loch Ness during the years 1903 and 1904. Some of the conclusions which I arrived at have not been generally accepted, and in particular limnologists have been slow to acknowledge the existence of the temperature seiche first described by Mr Watson, and which I consider was fully borne out by the observations published in my previous communication. In order to get some ocular demonstration of the possibility of such a phenomenon, I had recourse to laboratory experiments, and it is the description of these experiments which is the main object of the present communication. Besides demonstrating the nature of the temperature seiche, the experiments also throw light on the formation of what has been called by German and Austrian writers the Sprungschicht, and which I now propose to call in English the ‘discontinuity layer,’ which, with the word Sprungschicht, has the merit of being descriptive.

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