Affiliation:
1. Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Morisa Toreza Pr. 44, 194223 Saint Petersburg, Russia
Abstract
This review presents data on the role of cortisol (F) at the final stages of the reproductive cycle in migratory sturgeons (Acipenseridae) of the Volga-Caspian region: Russian sturgeon (Acipenser gueldenstaedtii Brandt et Ratzeburg, 1833), stellate sturgeon (Acipenser stellatus Pallas, 1771) and beluga (Huso huso (Linnaeus, 1758) obtained using a special variant of enzyme-linked immunosorbent assay (ELISA), which allowed us to compare the indicators of different years. The dynamics of F level in blood serum (BS) and the state of the interrenal gland (IG) in sturgeons were studied during feeding in the sea and at the beginning of the anadromous migration, as well as at the reproduction in the conditions of hatcheries. Higher levels of F in BS and high functional activity of IG are characteristic of sturgeon migrants when entering the river compared with data for fish during feeding in the sea. Reservation of sturgeon breeders at the hatchery led to decrease of the F serum level; and hormonal stimulation of maturation caused an increase in this indicator. Data on the F content in oocytes and abdominal (coelomic) fluid during maturation of female sturgeon are also presented. The F “profiles” were evaluated in sturgeon breeders under stress impacts that are unavoidable at the conditions of hatchery enterprises, as well as under experimentally simulated stress impacts. Peculiarities of the interaction of the hypothalamic-pituitary-gonadal and hypothalamic-pituitary-interrenal axes in sturgeons during reservation at hatcheries and during hormonal stimulation of fish maturation are discussed. Particular attention is paid to the compilation of data contained in the works performed in the late 90s – early 2000s under the guidance of Dr. Sc., prof. I.A. Barannikova (1926–2017), to whose memory the review is dedicated.
Publisher
Zoological Institute of the Russian Academy of Sciences
Subject
Insect Science,Animal Science and Zoology,Aquatic Science,Ecology, Evolution, Behavior and Systematics
Reference72 articles.
1. Aluru N. and Vijayan M.M. 2009. Stress transcriptomics in fish: A role for genomic cortisol signaling. General and Comparative Endocrinology, 164(2–3): 142–150. https://doi.org/10.1016/j.ygcen.2009.03.020
2. Barton B.A. 2002. Stress in fishes: a diversity of responses with particular reference to changes in circulating corticosteroids. Integrative and Comparative Biology, 42(3): 517–525. https://doi.org/10.1093/icb/42.3.517
3. Barannikova I.A. 1975. Functional basic of fish migration. Nauka, Leningrad, 210 p. [In Russian].
4. Barannikova I.A., Vasil’eva E.V., Trenkler I.V. and Tsepelovan P.G. 1978. Interrenal gland in the life cycle of the migratory sturgeons (Acipenseridae). Voprosy Ikhtiologii, 18(4): 719–734. [In Russian].
5. Barannikova I.A., Bayunova N.N. and Strelbitskaya A.A. 1981a. Formation of interrenal gland function in sturgeon ontogenesis and its reaction to changes in temperature. Voprosy Ikhtiologii, 21(6): 1084–1092. [In Russian].