A. testudineus


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  • noun

Synonyms for A. testudineus

a small perch of India whose gills are modified to allow it to breathe air

References in periodicals archive ?
In the present study, degenerative changes in columnar epithelial cells, vacuolated basal region, brush border disappearance, top plate thinning, distortion in gastric glands and fusion of submucosa with mucosal folds were frequently observed pathological alterations in stomach of A. testudineus. Damage in gastric glands observed under present study was also reported by Crespo and indicating lower production of mucin which ultimately reduced the protection ability of the gastric epithelium against the chemical injuries [23].
These results are also in agreement with the findings of Senapati who reported damage in mucosal folds and CEC, and degeneration in microvilli structure with profound secretion of mucus in intestine of A. testudineus afetr Almix exposure under laboratory condition (19).
The ovary of A. testudineus is a bilobed organ lying just ventral to the air bladder and is attached to the body cavity by a thin membrane mesovarium.
It is possible that the variation in fecundity of the A. testudineus may be due to environmental conditions of the river and water bodies.
In the present study on fecundity revealed that, A. testudineus is a low fecund fish when compared to carps, other catfish species and other air breathing fishes.
Spawning of A. testudineus was performed by artificial propagation following the technique of Kohinoor et al., [31].
Mean values and ranges of water quality parameters over the 8-week nursery rearing of A. testudineus fingerlings are presented in Table 1.
The range of temperature in the experimental ponds is within the acceptable range for nursing of fingerlings of A. testudineus that agree well with the earlier findings of Haylor and Mollah [22,39,46].
Growth in terms of final length, length gain, final weight, weight gain and specific growth rate of fingerlings of A. testudineus was significantly higher in [T.sub.1] where the stocking density of hatchlings (1.0 million/ha) was low compared to those of [T.sub.2] (1.2 million/ha) and [T.sub.3] (1.4 million/ha) although same food was applied at an equal ratio in all the treatments.
The present study revealed that the growth, survival, production and net benefits of A. testudineus fingerlings were inversely related to the stocking densities of hatchlings.