VARIATIONS IN PLASMA SEX STEROID HORMONES OF THE WILD CASPIAN CYPRINID FISH, KUTUM (RUTILUS FRISII KUTUM)

@article{Saeed2016VARIATIONSIP,
  title={VARIATIONS IN PLASMA SEX STEROID HORMONES OF THE WILD CASPIAN CYPRINID FISH, KUTUM (RUTILUS FRISII KUTUM)},
  author={Shafiei Sabet Saeed and Imanpoor Mohammad Reza and Aminian Fatideh Bagher and Gorgin Saeed},
  journal={Journal of Cell and Molecular Research},
  year={2016},
  volume={8},
  pages={25-34}
}
Steroid hormones in plasma play an important role in reproductive cycles of animals especially during the final maturation stages. Steroid hormones synchronize gonad developments depending to fish species reproductive strategies. The wild Cyprinid fish, Kutum (Rutilus frisii kutum) is an ecologically and economically important fish species which inhabit in southern coastline of the Caspian Sea in Iran. Over the past few decades, natural reproduction of this species dramatically impaired due to… 

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Seasonal fluctuations in plasma sex steroid hormones of Indian major carps: Mrigal (Cirrhinus mrigala), Catla (Labeo catla) and Rohu (Labeo rohita)

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The results revealed that T levels in females of Labeo catla  and Lobeo rohita did not change during a year; however, females of Cirrhinus mrigala had the highest plasma T level during maturing stage in spring compared to the other seasons, indicating high temperatures in Khuzestan Province could be truncated reproductive development in Indian carps.

References

SHOWING 1-10 OF 53 REFERENCES

Seasonal Fluctuations of Sex Steroid Hormones in Indian Major Carp Catla catla in Khouzestan, Iran

TLDR
C climatic conditions (Temperature) had a great impact on broodstocks Gonad development via involving of hormones in Khuzestan through the course of the sexual maturation at the end of winter.

Changes in plasma levels of steroid hormones during oocyte development of Caspian Kutum (Rutilus frisii kutum, Kamensky, 1901).

TLDR
The results indicate that in Kutum, the two hormones E2 and T were functionally important during the vitellogenic phase while progestogens were probably associated with the maturational phase of ovarian growth.

Study the seasonal steroid hormones of common carp in Caspian Sea, Iran

TLDR
Investigation of serum steroid hormones in 12 female of the migratory population of Common carp in southeast of Caspian Sea revealed that changes in levels of steroid hormones, (E2) and (T) were closely correlated to ovarian development.

Plasma sex steroid hormonal profile and gonad histology during the annual reproductive cycle of river catfish Hemibagrus nemurus (Valenciennes, 1840) in captivity

TLDR
Gonad histology revealed that spermatozoa were always present in the testes which implied continuous spermatogenesis and asynchronous ovarian development pattern was observed in the ovaries and indicate that H. nemurus is a non-seasonal breeder with several spawning cycles and can be referred to as indeterminate batch spawner.

Seasonal cycles of gonadal development and plasma sex steroid levels in Epinephelus morio, a protogynous grouper in the eastern Gulf of Mexico

TLDR
The sequence of an increase in gonial cells along the periphery of the lamellae, increase in interstitial tissue, degradation of female elements, and formation of a sperm duct seemed to be concurrent with spermatocyte proliferation and the process of preparing the gonad to function as a testis.

Temporal variations in haematological and biochemical indices of the Caspian kutum, Rutilus frisii kutum

TLDR
The results of this study suggest that temporal variations in haematological and biochemical parameters of blood are significant and should be considered when these parameters are used to assess fish health status.

Age, Growth and Reproduction of the Female Kutum, Rutilus kutum (Kamensky, 1901) (Teleostei: Cyprinidae), in Gorgan-Rud Estuary, Northern Iran

TLDR
Fishes in the eastern part of the Caspian Sea experience a higher temperature and salinity, compared to those in the western part, and these ecological factors could highly affect the kutum populations and compared to the western populations, the eastern population differed in a lower b value, a lower ratio of male:female, a higher absolute and relative fecundity and a higher egg diameter.
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