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The Fungicide Thiram may Disrupt Reproductive Cycle of Domestic Male Pigeon (Columba livia domestica) Subjected to a Long Photoperiod

The Fungicide Thiram may Disrupt Reproductive Cycle of Domestic Male Pigeon (Columba livia domestica) Subjected to a Long Photoperiod

Souheila Slimani1,*, Sonia Hamouda1, Chahrazed Souadi1, Sara Silini2, Cherif Abdennour2 and Leila Delimi3

1Department of Biology, Faculty of Sciences, University of 20 August 1955, Skikda 21000, Algeria
2Laboratory of Animal Ecophysiology, Department of Biology, University Badji Mokhtar-Annaba, Annaba 23000, Algeria
3Laboratoy of Anatomopathyology, EPS of Skikda 21000, Algeria

*      Corresponding author: shsouheila@yahoo.fr

 

Fig. 1.

 Variation of the mean testicular volume (m±SE) of male pigeons (Columba livia domestica) subjected to a long photoperiod (19L:05D) and exposed to thiram (n=6). a, difference between control and D1; b, difference between control and D2; c, difference between D1 and D2.

Fig. 2.

Variation of the mean testicular weight at week 10 (m±SE) of male pigeons (Columba liviadomestica) subjected to a long photoperiod (19L: 05D) and exposed to thiram (n=6). a, difference between control and D1; b, difference between control and D2; c, difference between D1 and D2.

Fig. 3.

Selected pictures of testes of male pigeons (Columba liviadomestica) at week 10 (C: control; D1, 5mg/Kg/D; D2, 10mg/Kg/D) subjected to a long photoperiod (19L: 05D) and exposed to thiram (n=6).

Fig. 4.

The testis of control pigeons (Columba livia domestica) subjected to long photoperiod (19L:5D) for 10 weeks H&E. Magnification x10 and x40. The histological profile showing azospermia and lack of spermatogenesis stage. TS, somniferous tubules; TI, interstitial tissue; EP, epithelium.

Fig. 5.

Testis of pigeon (Columba livia domestica) exposed to Thiram 5 mg/Kg/day for 10 weeks and subjected to long photoperiod (19L:5D), H&E. Magnification x10 and x40. L, lumen; Sp, spermatozoa; SG, spermatogonia; SC, spermatocyte; SD, spermatide. Degenerative in the histoarchitecture of testis are seen. Irregular somniferous tubules with all successive stages of spermatogenesis, some malformed spermatozoa in the lumen, slight decrease in Sertoli cell counts and a decrease in the interstitial spaces.

Fig. 6.

Testis of pigeon (Columba livia domestica) exposed to Thiram at 10 mg/Kg/day after 10 weeks (H&E. Magnification x10 and x40). L, lumen; Sp, spermatozoa; SG, spermatogonia; SC, spermatocyte; SD, spermatide; S, Sertoli cells. Acute degenerative in the histoarchitecture of testis characterized by elongated and irregular diameter of seminiferous tubules with all the successive stages of spermatogenesis. Deteriorating of Sertoli cells, a pronounced decrease in interstitial space and severe atrophy of Leydig cells.

Pakistan Journal of Zoology

August

Vol. 50, Iss. 4, Pages 1199-1600

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