Display options
Cite
Tagawa M, Ogasawara T, Sakamoto T, et al. Thyroid hormone concentrations in the gonads of wild chum salmon during maturation. Fish Physiol Biochem. 1994;13(3):233-40doi: 10.1007/BF00004361.
Tagawa, M., Ogasawara, T., Sakamoto, T., Miura, T., Yamauchi, K., & Hirano, T. (1994). Thyroid hormone concentrations in the gonads of wild chum salmon during maturation. Fish physiology and biochemistry, 13(3), 233-40. https://doi.org/10.1007/BF00004361
Tagawa, M, et al. "Thyroid hormone concentrations in the gonads of wild chum salmon during maturation." Fish physiology and biochemistry vol. 13,3 (1994): 233-40. doi: https://doi.org/10.1007/BF00004361
Tagawa M, Ogasawara T, Sakamoto T, Miura T, Yamauchi K, Hirano T. Thyroid hormone concentrations in the gonads of wild chum salmon during maturation. Fish Physiol Biochem. 1994 Jul;13(3):233-40. doi: 10.1007/BF00004361. PMID: 24198193.
Copy Download .nbib Format: NLM
Share it on

Fish Physiol Biochem. 1994 Jul;13(3):233-40. doi: 10.1007/BF00004361.

Thyroid hormone concentrations in the gonads of wild chum salmon during maturation.

Fish physiology and biochemistry

M Tagawa, T Ogasawara, T Sakamoto, T Miura, K Yamauchi, T Hirano

Affiliations

  1. Ocean Research Institute, University of Tokyo, Nakano, Tokyo, 164.

PMID: 24198193 DOI: 10.1007/BF00004361

Abstract

Changes in gonadal and plasma concentrations of thyroid hormones were examined at various stages of maturation in chum salmon (Oncorhynchus keta) caught in the Bering Sea and the Bay of Alaska. Plasma concentrations of thyroxine (T4) were less than 5 ng ml(-1), and those of 3,5,3'-triiodo-L-thyroxine (T3) were less than 2 ng ml(-1) I in both males and females, regardless of the degree of sexual maturity or the gonadosomatic index (GSI).There was no clear relationships between circulating thyroid hormone levels and tissue levels. The ovarian T4 concentrations were undetectable (less than 0.2 ng g(-1)) or less than 2 ng g(-1) when GSI was lower than 1%, but increased thereafter and reached a plateau of 8-10 ng g(-1) when GSI became 2%. The ovarian T3 concentrations were about 5 ng g(-1) when GSI was 1%, increased to a maximum level (20 ng g(-1)) when GSI was about 2%, and decreased to a constant level of 10 ng g(-1) thereafter. The T4 and T3 content in single oocyte increased proportionally to the oocyte volume, indicating a constant incorporation of the hormones into the oocyte.The T4 concentrations in the testis were 1 ng g(-1) or less regardless of the GS1. On the other hand, the T3 concentrations were highest (15 ng g(-1)) when the GSI was less than 1%, decreased thereafter when spermatocytes appeared in the testis, and became about 5 ng g(-1) I in testes containing spermatozoa, raising the possibility of a role for T3 during early gamete and/or gonad maturation of testes.

References

  1. J Exp Zool. 1992 Jul 1;262(4):414-9 - PubMed
  2. Gen Comp Endocrinol. 1989 Dec;76(3):437-43 - PubMed
  3. Fish Physiol Biochem. 1989 Jun;7(1-6):309-13 - PubMed
  4. Fish Physiol Biochem. 1990 Nov;8(6):515-20 - PubMed
  5. Gen Comp Endocrinol. 1992 Dec;88(3):397-405 - PubMed
  6. Gen Comp Endocrinol. 1988 Jan;69(1):99-105 - PubMed
  7. Gen Comp Endocrinol. 1992 Mar;85(3):392-404 - PubMed
  8. Am J Physiol. 1952 Jul;170(1):81-6 - PubMed
  9. Gen Comp Endocrinol. 1987 Oct;68(1):129-35 - PubMed
  10. Endocrinology. 1990 May;126(5):2521-6 - PubMed
  11. Fish Physiol Biochem. 1989 Jun;7(1-6):295-9 - PubMed
  12. Gen Comp Endocrinol. 1985 Feb;57(2):309-19 - PubMed

Publication Types