Sex steroid profiles in female and male stellate sturgeon (Acipenser stellatus Pallas) during final maturation induced by hormonal treatment

Semenkova, T.B.; Barannikova, I. A.; Kime, David E.; McAllister, B.G.; Bayunova, L. V.; Dyubin, V. P.; Kolmakov, N.N.

doi:10.1046/j.1439-0426.2002.00368.x

Cited by 58 publications

(70 citation statements)

References 24 publications

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“…Our findings, concerning steroid levels in Persian sturgeon males are in agreement with results reported by Semenkova et al (2002) [6] in Stellate sturgeon, Acipenser stellatus (Pallas) which, levels of T, 11K and P4 elevate after LHRH-A injection in spermiating males, whereas such elevations were not observed in non spermiating males. Also our data confirmed by Artyukhin et al (2006) [2] in Russian sturgeon, Acipenser gueldenstaedti (Brandt) and Barannikova et al (2004) in Sterlet, Acipenser ruthenus L. Possible reasons for the absence spermiation and low levels of steroids after hormonal stimulation were: (1) damage of steroidogenesis process (2) delay of the maturation and (3) not completed stage of the spermatogenesis [6,14]. On the other hand, Environmental pollution is one of the major factors which can disrupt the reproduction in fish at all gonadal stages [14].…”

Section: Discussionsupporting

confidence: 93%

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Comparative Study of Sex Steroid Levels of Persian Sturgeon, Acipenser persicus Males in Responding Negative and Positive to LHRH-A2 Hormone

Aramli¹,

Kalbassi²,

Nazari³

2013

J Aquac Res Development

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Gonadotropin-releasing hormone agonists (GnRHa or LHRHa) have been used extensively in order to stimulate the release of pituitary luteinizing hormone (LH) required to induce sexual maturation (e.g., spermiation). In this research, blood serum testosterone (T), 11-ketotestosterone (11-K) and progesterone (P 4 ) levels were measured in Persian sturgeon, Asipenser persicus (Borodin, 1897), males during propagation season. The type and dose of hormone administration for artificial propagation were LH-RH-A 2 and 5 μg kg -1 , respectively. In males which responded by spermiating, serum steroids levels (T, 11-K and P 4 ) were higher than in non spermiating males. Following hormonal stimulation, levels of all three steroids increased significantly in spermiting males 14h after LHRH-A 2 injection. T levels increased slightly in non spermiting males and other steroids did not change during the spermiation process. The rise of T levels in both males show that this steroid as a dominant and key androgen related with maturation in Persian sturgeon.

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Section: Discussionsupporting

confidence: 93%

“…Sex steroids concentrations (ng ml -1 ) of testosterone (T), 11-ketotestosterone (11-K) and progesterone (P4) were determined using the enzyme-linked immunosorbent assay (ELISA) according to Semenkova et al (2002) [6].…”

Section: Sex Steroids Analysismentioning

confidence: 99%

Comparative Study of Sex Steroid Levels of Persian Sturgeon, Acipenser persicus Males in Responding Negative and Positive to LHRH-A2 Hormone

Aramli¹,

Kalbassi²,

Nazari³

2013

J Aquac Res Development

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“…The glucose concentration was measured spectrophotometrically (Jenway, England) with a diagnostic kit (Pars Azmoon Co, Tehran, Iran). Steroids levels (Cortisol, Testosterone) and GTHII concentrations (ng/mL) were measured by Enzyme-Linked Immunosorbent Assay (ELISA) according to Barannikova et al ( , 2004 and Semenkova et al (2002). Assay kits were purchased from Immunotech Company, France.…”

Section: Methodsmentioning

confidence: 99%

EFFECT OF DIFFERENT DOSES OF SYNTHETIC HORMONE LHRH-A2 ON SERUM SEX HORMONES, OVULATION PERCENT AND EGG HATCHING RATES OF PERSIAN STURGEON Acipenser persicus

Mohammadi

Khara

Kazemi³

2015

CJF

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Acipenser persicus is one of the economically valuable fishes in the Caspian Sea. Due to the economical and cultural importance of sturgeons in the world, understanding of sturgeon reproduction is necessary for successful management of their populations in aquaculture and nature. To improve the culture methods and to facilitate captive breeding programs to support restocking, it is necessary to understand the changes in steroid hormones during artificial reproduction. The administration of sturgeon luteinizing hormone -releasing hormone analogue (LHRH-A 2 ) induces changes in serum sex steroid levels. To study the effects of different doses of LHRH-A 2 hormone on induction of final maturation and ovulation of Persian sturgeon, 18 maturating females and 18 maturating males were used. All brooders were injected with LHRH-A 2 in dosages of 4, 6 and 8 µg kg -1 . In this study, LHRH-A 2 successfully induced final maturation and ovulation in females, and the highest percentage of ovulated females was observed in the groups treated with dose of 4 µg kg -1 LHRH-A 2 . There were significant differences in serum cortisol (C), testosterone (T) and Gonadotropin hormone (GTHII) concentrations at tested dosages. In hormonal treatment groups, the highest hatching rate was observed in the groups receiving 4 µg kg -1 LHRH-A 2 . Finally, the LHRH-A 2 in dose of 4 µg kg -1 is effective in stimulating oocyte maturation and ovulation in Persian sturgeon. How to CiteMohammadi, H., Khara, H., Kazemi, R. (2015): Effect of different doses of synthetic hormone LHRH-A 2 on serum sex hormones, ovulation percent and egg hatching rates of Persian sturgeon Acipenser persicus. Croatian Journal of Fisheries, 73,[58][59][60][61][62]

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“…Gonads were further analyzed for assessing their developmental stage according to the description provided by ArellanoMartínez et al (1999). Additionally, plasma E2 was measured by Enzyme-Linked Immune Sorbent Assay (ELISA) according to the procedure described by Semenkova et al (2002) using a commercial kit (MBS044518, My Biosource, San Diego, CA, USA).…”

Section: Histological and Plasma 17β-estradiol (E2) Analysesmentioning

confidence: 99%

Fatty acid and proximate composition of wild male and female king angelfish (Holacanthus passer) gonads during the ripe and spent developmental stages

et al. 2016

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Overfishing of king angelfish Holacanthus passer reduced populations in the Gulf of California. This study aimed to determine the fatty acid and proximate composition of male and female gonads, and the E2 concentration in plasma of wild organisms with different stages of gonadal development captured during early and mid-summer at El Datil, near Kino Bay, Sonora, Mexico, to help establish basic reproductive aspects and possibly to help develop the aquaculture of this ornamental species. Out of the 45 adult specimens analyzed, 66.7% were females and 33.3% were males; 16.7% of the females had ripe gonads while 83.3% had spent gonads, and 20% of males had ripe gonads while 80% had spent gonads, indicating they were reproducing earlier, likely in the spring. Females had smaller size but numerically greater gonadosomatic index (GSI) and condition factor (K) than males. Ripe and spent females showed no statistical differences in weight, length or K; however, ripe females showed significantly higher GSI (P = 0.0005) than spent females, 3.43 vs. 0.87%. Lipid content was higher in ripe gonads, with higher content of fatty acids. In both sexes, DHA was quantitatively the major fatty acid, (10.83-16.28 mg of DHA g -1 of gonad wet weight). The n-3/n-6 ratios varied from 1.99 to 3.54, lower for ripe organisms due to a higher content of ARA and n-6 derivatives. Gonad DHA content changed in relation to its developmental stage and it might serve as an additional maturation index. Information on the chemical composition and fatty acid profile of the gonads can be used as indicators of dietary lipid and essential fatty acid requirements of broodfish, which may contribute to the formulation of a balanced diet for the culture of this ornamental species.

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Sex steroid profiles in female and male stellate sturgeon (Acipenser stellatus Pallas) during final maturation induced by hormonal treatment

Cited by 58 publications

References 24 publications

Comparative Study of Sex Steroid Levels of Persian Sturgeon, Acipenser persicus Males in Responding Negative and Positive to LHRH-A2 Hormone

Comparative Study of Sex Steroid Levels of Persian Sturgeon, Acipenser persicus Males in Responding Negative and Positive to LHRH-A2 Hormone

EFFECT OF DIFFERENT DOSES OF SYNTHETIC HORMONE LHRH-A2 ON SERUM SEX HORMONES, OVULATION PERCENT AND EGG HATCHING RATES OF PERSIAN STURGEON Acipenser persicus

Fatty acid and proximate composition of wild male and female king angelfish (Holacanthus passer) gonads during the ripe and spent developmental stages

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