Effects of selected hormones and male cohorts on final oocyte maturation, ovulation, and steroid production in walleye (Stizostedion vitreum)

Barry, Terence P.; Malison, Jeffrey A.; Lapp, Anita F.; Procarione, Lynne S.

doi:10.1016/0044-8486(95)01125-0

Cited by 26 publications

(18 citation statements)

References 26 publications

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Section: Reproductive Biologymentioning

confidence: 96%

“…Barry et al (1995) found this steroid of all those tested to be the most potent at inducing oocyte maturation in uitro. In vivo, both Pankhurst et al (1986) and Barry et al (1995) measured significant elevations in serum levels of this steroid coincident with final oocyte maturation. The peak levels of 1.5-2.5 ng/ml measured by these investigators, however, were lG100-fold lower than those measured in some salmonid and cyprinid species (see Scott and Canario 1987) Barry et al (1995) postulated that percids may require only low levels of 17,20-P to induce GVBD (as suggested by their in vitro data), or that 17,20-P may be rapidly conjugated and removed from the blood.…”

Section: Reproductive Biologymentioning

confidence: 96%

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Reproduction and spawning in walleye (Stizostedion vitreum)

Malison

Held

1996

J Appl Ichthyol

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The walleye (Stizostedion viweum) is a North American mesothermal freshwater teleost that spawns once each year in early spring. Walleye spawn randomly over suitable substrates and d o not provide any parental protection for eggs or juveniles. The majority of gonadal recrudescence in adult male walleye occurs in the autumn, and walleye testes contain large numbers of viable spermatozoa from late autumn through the spawning season. Adult female walleye exhibit group synchronous ovarian developmcnt, and similar to males, the majority of gonadal development occurs in the autumn. Evidence suggests that 17a,20P-dihydroxyprogesterone is the maturational steroid in this species. Simple environmental manipulations coupled with injections of human chorionic gonadotropin can be used to advance spawning in walleye by up to 12 weeks. To spawn and propagate walleye, hatcheries in North America use a wide range of methods that have been developed to meet the needs and conditions present at specific facilities. IntroductionFor many years, walleye (Stizostedion uitreum) have been propagated extensively to support and augment both recreational and commercial fisheries in North America (Conover 1986). More recently, this species has been evaluated for its potential for commercial food fish aquaculture in this region. This paper will review the reproductive biology of walleye, methods to induce and control spawning, and procedures commonly used to fertilize and incubate eggs.

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Section: Reproductive Biologymentioning

confidence: 96%

Section: Reproductive Biologymentioning

confidence: 96%

Reproduction and spawning in walleye (Stizostedion vitreum)

Malison

Held

1996

J Appl Ichthyol

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“…Acute handling and confinement (stressors) of juvenile and immature Atlantic salmon for 3 hours is accompanied by an increase concentration of plasma cortisol (Carey and McCormick, 1998). During physiological changes such as a smoltification and sexual maturation, cortisol levels increase but androgen levels in plasma inversely decrease due to stress (Barry et al, 1995;Pickering et al, 1987). In mature salmon, stress caused by the administration of exogenous cortisol induced suppression of reproductive and gamete development (Carragher et al, 1989;Carragher and Sumpter, 1990;Foo and Lam, 1993).…”

Section: Introductionmentioning

confidence: 99%

“…In teleosts, cortisol is a major stress hormone and its plasma level increases are positively correlated with stress levels (Billard and Gillet, 1981;Pickering et al, 1982;Sumpter et al, 1986). Many studies of adult salmon also reported a correlation between plasma cortisol concentration and stress (Billard and Gillet, 1981;Pickering et al, 1982, Barry et al, 1995Pickering and Pottinger, 1987a,b;Carragher et al, 1989;Carragher and Sumpter, 1990;Foo and Lam, 1993;Chopin et al, 1996;Jardine et al, 1996;Waring, et al, 1997, Carruth et al, 2000. Acute handling and confinement (stressors) of juvenile and immature Atlantic salmon for 3 hours is accompanied by an increase concentration of plasma cortisol (Carey and McCormick, 1998).…”

Section: Introductionmentioning

confidence: 99%

Sex-specific Cortisol and Sex Steroids Responses in Stressed Sockeye Salmon during Spawning Period

2001

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“…)], walleye [Sander vitreus (Mitch. )] and pikeperch [Sander lucioperca (L.)] (among others, Dabrowski, Ciereszko, Ramseyer, Culver & Kestemont 1994;Barry, Malison, Lapp & Procarione 1995;Malison & Held 1996;Kestemont & Melard 2000;. Doubtlessly, all these species are of great ecological and economic importance (Craig 2000).…”

Section: Introductionmentioning

confidence: 99%

Out-of-season spawning of cultured pikeperch [Sander lucioperca (L.)]

Zakęś

2007

Aquaculture Res

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The aim of this study was to determine the effectiveness of out‐of‐season spawning of cultivated pikeperch (fish that were reared from the larval stage in re‐circulating systems and fed commercial feed exclusively) stimulated hormonally with human chorionic gonadotropin (hCG). The impact of fish age (2+ and 3+) and hormone dosage [200 or 400 IU hCG kg−1 body weight (BW)] on spawning was analysed and expressed as the share of stripped females, commercial fecundity (% BW) and survival of embryos until the eyed‐egg stage (EES index). The possibility of utilizing changes in female pikeperch body weight (CBW index) that are observed following hormone injections as an additional indicator for determining maturity was also investigated. The age and hormone dosage were not noted to have a significant impact on the number of stripped females (≥80% on all groups), the latency period (90–100 h), commercial fecundity (11.3–13.3% BW) or the values of the EES index (61–73%; P>0.05). The mean value of EES from the 3+ age group females was higher than that in the 2+ females, and the interaction between the tested factors (fish age and hormone dosage) wasstatistically significant (P<0.05). In the fish from the control group (injected with a 0.9% NaCl solution), no progress was noted in the maturation of oocytes and no eggs were obtained from any female. It was noted that these females lost BW over the course of the subsequent 24 h of the measurements (P<0.05). In the groups of females that were stimulated hormonally, the opposite phenomenon was observed; in these groups, the CBW index increased significantly between 48 and 96 h following hormone injection. The value of the CBW index was not noted to have been statistically significantly determined by either hormone dose or fish age (P>0.05). The regression equations that described the dependence between CBW and the oocyte maturity stage were highly significant statistically, and the determination coefficient R2 assumed a value of 0.76. The most significant increase in BW was related to the oocytes achieving maturity stage III. The BW of pikeperch females with oocytes in this stage was 103% higher than the initial BW. This might be a valuable and useful tool for determining maturity in females of this fish species.

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Effects of selected hormones and male cohorts on final oocyte maturation, ovulation, and steroid production in walleye (Stizostedion vitreum)

Cited by 26 publications

References 26 publications

Reproduction and spawning in walleye (Stizostedion vitreum)

Reproduction and spawning in walleye (Stizostedion vitreum)

Sex-specific Cortisol and Sex Steroids Responses in Stressed Sockeye Salmon during Spawning Period

Out-of-season spawning of cultured pikeperch [Sander lucioperca (L.)]

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