Earticle

초록

영어

Changes of gonadal morphology and mRNA expression patterns of vitellogenin were investigated in Siberian sturgeon Acipenser baerii (Chondrostei) during its early gonadal maturation period. Early differentiations and morphological transitions of both ovaries and testes appeared to occur actively until the age of 3 years, however from then on, the maturation patterns to full maturity were largely gender-dependent, in which males showed a faster progression of maturation than did females while females experienced a steady-state progress with a lagged interval before entering the final maturation. Expression of vitellogenin mRNAs are closely correlated with transitional patterns of gonadal appearances. In both females and males, hepatic mRNA levels of vitellogenin exponentially increased in the earliest interval (up to 1-year-old). However, in subsequent periods, vitellogenin expression in females continued to increase with age, whereas in males, the expression stabilized at a younger age. Nevertheless, at the age older than or equal to 7-year-old, fully matured individuals showed a quite low level of vitellogenin expression in both females and males. Collectively, results from this study could be useful as a fundamental guideline to address the gonad maturation of this sturgeon species, which is helpful for making practical decisions about farming practices and management for caviar production on local sturgeon farms.

목차

ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
Sturgeon specimens and culture conditions
Observation regimes for gonadal maturity
RT-qPCR assay of vitellogenin mRNA expression
Statistics
RESULTS
Ovarian appearances during early maturation
Testicular appearances during early maturation
Age-dependent vitellogenin mRNA levels
DISCUSSION
CONFLICTS OF INTEREST
ACKNOWLEDGEMENTS
AUTHOR CONTRIBUTIONS
AUTHOR’S POSITION AND ORCID NO.
REFERENCES

키워드

저자

• Chulhong Park [ Dinoville Sturgeon Aquafarm, Hamyang 50027, Korea ]
• Seung Pyo Gong [ Department of Marine Bio-Materials & Aquaculture, Pukyong National University, Busan 48513, Korea ]
• Youn Hee Choi [ Department of Marine Bio-Materials & Aquaculture, Pukyong National University, Busan 48513, Korea ]
• Ki Hong Kim [ Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, Korea ]
• Yoon Kwon Nam [ Department of Marine Bio-Materials & Aquaculture, Pukyong National University, Busan 48513, Korea ] Corresponding Author

참고문헌

발행기관

간행물

관심저널 등록

• 간행물명

  Journal of Animal Reproduction and Biotechnology

• 간기

  계간

• pISSN

  2671-4639

• eISSN

  2671-4663

• 수록기간

  2019~2026

• 십진분류

  KDC 527 DDC 636