Effects of estradiol-17β on survival, growth performance, sex reversal and gonadal structure of bluegill sunfish Lepomis macrochirus

Wang, Hanping; Gao, Zexia; Béres, Beatrix Szabóné; Ottobre, Joseph S.; Wallat, Geoff; Tiu, Laura G.; Rapp, Dean; O’Bryant, Paul; Yao, Hong

doi:10.1016/j.aquaculture.2008.08.041

Cited by 57 publications

(30 citation statements)

References 38 publications

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“…Wang et al (2008) also evaluated this parameter in L. macrochirus and found the same result during and after the hormone treatment. According to these authors, this growth recovery following the hormone treatment may be regarded as compensatory growth.…”

Section: Discussionmentioning

confidence: 84%

“…The production of monosex batches of the species Lepomis macrochirus avoids issues related to overpopulation in fish farms (WANG et al, 2008). In the case of Hippoglossus hippoglossus, the advantage of producing only females is related to the fact that the females grow faster and mature later than males (HENDRY et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Several studies report the use of androgens or estrogens administered in immersion baths or in feeds at the beginning of fish gonad development (ROUGEOT FLYNN;BENFEY, 2007;ARSLAN et al, 2009). The hormone estradiol-17β (E 2 ) is a natural estrogen that has been successfully used in different fish species, including Pseudobagros fulvidraco (PARK et al, 2004), L. macrochirus (WANG et al, 2008) and Micropterus salmoides (ARSLAN et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Effect of estradiol-17β on the sex ratio, growth and survival of juvenile common snook (Centropomus undecimalis)

Carvalho

Passini

Costa

et al. 2014

Acta Sci. Anim. Sci.

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ABSTRACT. Sex control in fish is a promising technique for aquaculture, since it gives advantages associated with one sex. The aim of this study was to investigate the feminization of common snook (Centropomus undecimalis) by oral administration of two doses of estradiol-17β (50 and 100 mg E 2 kg -1 feed) and control treatment for 45 days and to evaluate their effects on the sex ratio, growth and survival of common snook juveniles. After this period, fish were fed only with commercial feed without hormone supplementation. During the period of E 2 administration, the control fish grew more than those in the other treatments. At the end of the experiment in the treatment with 50 mg E 2 kg -1 , 26.32% of the fish were male, 68.42% were female, and 5.26% were intersex. In the treatment with 100 mg E 2 kg -1 , 10% of the fish were male, and 90% were female. There was no difference in growth among the treatments after 11 months. This study showed that it is possible to obtain 90% common snook females using feeds with 100 mg E 2 kg -1 for 45 days without impairing the fish growth or survival.Keywords: sex control, hormone treatment, marine fish, intersex, protandric.Efeito do estradiol-17β na feminização, crescimento e sobrevivência de juvenis de robaloflecha (Centropomus undecimalis) RESUMO. O controle do sexo dos peixes é uma técnica promissora na aquicultura, pois permite obter vantagens associadas a um dos sexos. Sendo assim, o objetivo deste trabalho foi avaliar o efeito do hormônio 17β-estradiol (E2) na feminização, crescimento e sobrevivência de juvenis de robalo-flecha (Centropomus undecimalis). Durante 45 dias, os juvenis foram submetidos a três dietas (controle, 50, 100 mg E 2 kg -1 de ração) com três repetições cada. Após este período, os peixes passaram a ser alimentados somente com ração comercial sem adição de hormônio. Durante o período de administração do E 2 , os peixes do controle cresceram mais que os dos outros tratamentos. No final do experimento, no tratamento com 50 mg E 2 kg -1 , 26% dos peixes eram machos, 68.42% eram fêmeas e 5.26% eram intersexo. No tratamento com 100 mg E 2 kg -1 , 10% dos peixes eram machos e 90% eram fêmeas. Após 11 meses não houve diferença de crescimento entre os tratamentos. Este trabalho mostrou que é possível obter 90% de fêmeas de robaloflecha utilizando rações com 100 mg E 2 kg -1 durante 45 dias sem danos ao crescimento ou à sobrevivência.Palavras-chave: controle do sexo, tratamento hormonal, peixe marinho, intersexo, protândrico.

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Section: Discussionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of estradiol-17β on the sex ratio, growth and survival of juvenile common snook (Centropomus undecimalis)

Carvalho

Passini

Costa

et al. 2014

Acta Sci. Anim. Sci.

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“…This result was consistent with those reported in most of the previous studies. Atlantic salmon ( Salmo salar ; Hunter & Donaldson, ), coho salmon, Oncorhynchus tshawytscha (Sower, Dickhoff, Flagg, Mighell, & Mahnken, ), and bluegill sunfish, Lepomis macrochirus (Wang et al., ), treated frequently with high doses of estradiol showed high mortality rates and growth depression, indicating that high doses of estradiol exert toxic effects. Estradiol‐17β doses above a threshold level have been reported to negatively affect the survival of many fish species, such as coho salmon ( Oncorhynchus tshawytscha ; Hunter, Solar, Baker, & Donaldson, ), zebra cichlid ( Cichlasoma nigrofasciatum ; George & Pandian, ) and mud loach ( Misgurnus mizolepis ; Kim, Nam, & Jo, ).…”

Section: Discussionmentioning

confidence: 99%

Effects of estradiol-17β on survival, growth performance, gonadal structure and sex ratio of the tiger puffer,Takifugu rubripes (Temminck & Schlegel, 1850), fingerlings

et al. 2018

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Systematic research was performed to assess the survival, growth performance, gonadal structure and sex ratio during and after sex reversal induced by estradiol‐17β in tiger puffers. The fish of 20 days after hatching (dah) were immersed in different doses (0.2, 2, 20, 100 ppb) for 60 days. There were significant differences in survival rates among groups (p < .05). With the increase in the estradiol‐17β dose, the survival rates of tiger puffers decreased, revealing a linear regression relationship with log10 (estradiol + 1; p < .05). The growth tendency of fish in the low‐dose group was similar to those in the control group over the same period. The growth in the 20 ppb dose group was significantly slower than in the low‐dose and control groups in fish of same age (p < .05), but was significantly faster than in the 100 ppb dose group (p < .05) after 60 days. Intersex fish were categorized into intersex I, II and III types, according to the feminization degree from low to high. Phenotypic intersex puffer fish were found in the 2, 20 and 100 ppb dose groups. Intersex ratios in 2, 20 and 100 ppb were 10%, 43.3% and 46.7%, respectively, the ratios except the ones in 2 ppb group being significantly higher than those in the control group (p < .05). Moreover, 100.0% male induction for intersex II and III types occurred in 20 and 100 ppb groups. Together, these results indicated that estradiol‐17β at a dose of 20 ppb was most effective for pseudo‐female production.

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“…The estrogens found in WWTPs include the natural female hormones (e.g., estrone, E1; 17-b-estradiol, E2), synthetic hormones from oral contraceptives (e.g., 17-a-ethynylestradiol, EE2) (Wise et al 2011;Fernandez et al 2007), and industrial chemicals (e.g., 4-nonylphenol and bisphenol A) (Boyd et al 2004;Fernandez et al 2007). Environmental estrogens are capable of binding with estrogen receptors in exposed animals (Soto et al 1995) causing physiological and biochemical changes, such as induction of vitellogenin production in fish (Verslycke et al 2002;Wang et al 2008). In an experimental lake study, chronic exposure of fish to estrogenic chemicals has been shown to decrease reproductive success and affect population sustainability (Kidd et al 2007).…”

mentioning

confidence: 99%

Factors Affecting Distribution of Estrogenicity in the Influents, Effluents, and Biosolids of Canadian Wastewater Treatment Plants

Shieh

Louie

Law

2015

Arch Environ Contam Toxicol

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Canadian wastewater treatment plants (WWTPs) release significant amounts of estrogenic chemicals to nearby surface waters. Environmental estrogens have been implicated as the causative agents of many developmental and reproductive problems in animals, including fish. The goals of this study were to assess the estrogenic activity in the influents, effluents, and biosolids of thirteen Canadian WWTPs using the yeast estrogen screen (YES) bioassay and to investigate whether factors, such as wastewater treatment method, sample storage, extraction efficiency, population, and summer/winter temperature had any effects on the distribution of estrogenicity in the WWTPs. Results of the study showed that estrogenicity from the influent to the effluent decreased in seven WWTPs, increased in two WWTPs, and did not change in four WWTPs during the winter. Estrogenic concentrations generally decreased in the order of biosolids > influents > effluents and ranged from 1.57 to 24.6, 1.25E-02 to 3.84E-01, and 9.46E-03 to 3.90E-01 ng estradiol equivalents/g or ml, respectively. The estrogenicity in the final effluents, but not those in the influents and biosolids, was significantly higher in the summer than the winter. Among the WWTP treatment methods, advanced, biological nutrient removal appeared to be the most effective method to remove estrogenic chemicals from wastewaters in Canada. Our studies help to identify factors or mechanisms that affect the distribution of estrogenicity in WWTPs, providing a better understanding on the discharges of estrogenic chemicals from WWTPs.

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Effects of estradiol-17β on survival, growth performance, sex reversal and gonadal structure of bluegill sunfish Lepomis macrochirus

Cited by 57 publications

References 38 publications

<b>Effect of estradiol-17β on the sex ratio, growth and survival of juvenile common snook (<i>Centropomus undecimalis</i>)

<b>Effect of estradiol-17β on the sex ratio, growth and survival of juvenile common snook (<i>Centropomus undecimalis</i>)

Effects of estradiol-17β on survival, growth performance, gonadal structure and sex ratio of the tiger puffer,Takifugu rubripes (Temminck & Schlegel, 1850), fingerlings

Factors Affecting Distribution of Estrogenicity in the Influents, Effluents, and Biosolids of Canadian Wastewater Treatment Plants

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