Histological and histometrical study of common carp ovariandevelopment during breeding season in Khouzestan province inIran

Publish Year: 1390
نوع سند: مقاله ژورنالی
زبان: English
View: 455

This Paper With 9 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

JR_IJVM-5-4_010

تاریخ نمایه سازی: 26 اردیبهشت 1394

Abstract:

This survey was aimed at detecting histological and histometrical changes of Common Carp ovaries in Khouzestan Province climate conditions. The goal was to determine the ovarian status in the breeding period of the reproductive cycle. Ovaries of 49 Common Carp brooders were collected from April to October, 2010. The samples were taken from the anterior, median and posterior portions. 5-6μ sections were made by the paraffin embedding method and stained by H&E and PAS. The results showed that the breeding season in Common Carp in this area takes at least 7 months and spawning continues from April toOctober. It seems that the previtellogenesis and vitellogenesis stages are short in the Khouzestan climate conditions and this species rapidlyenters into the maturation phase. It seems that Common Carp have the ability to spawn three times during an annual cycle in the Khouzestanclimate conditions. Histological and histometrical results showed that in the three stages, from anterior to posterior, the mean percentage ofvitellogenic follicles increased significantly (p<0.001). The minimum diameters of follicles were observed in the chromatin nucleolus and themaximum diameters were observed in the secondary vitellogenic follicles. Zona pellucida appeared in the cortical alveolus follicles andreached to a maximum thickness in the secondary vitellogenic follicles.The diameter of the nucleus increased gradually and it reached to amaximum diameter in the primary vitellogenic follicles. There was a significant difference in parenchyma percentages between the threestages of the reproductive cycle from the previtellogenesis stage to the vitellogenesis stage, and then the maturation stage. This ratio increasedsignificantly (p<0.05).

Authors

S Shirali

Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz,Iran.

N Erfani Majd

Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz,Iran

M Mesbah

Department of Clinical scinces, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz,Iran.

M.R Seifiabad Shapoori

Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran