Journal ArticleDOI
Hormonal sex manipulation and evidence for female homogamety in channel catfish.
Kenneth B. Davis,Bill A. Simco,Cheryl A. Goudie,Nick C. Parker,William Cauldwell,Richard Snellgrove +5 more
TLDR
The mechanism of sex determination in channel catfish Ictalurus punctatus was evaluated by hormonal and genetic methods and it is suggested that the YY equivalent genotype is viable.About:
This article is published in General and Comparative Endocrinology.The article was published on 1990-05-01. It has received 76 citations till now. The article focuses on the topics: Sex reversal & Heterogametic sex.read more
Citations
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Journal ArticleDOI
Sex determination and sex differentiation in fish: an overview of genetic, physiological, and environmental influences
TL;DR: The lability of sex-determination systems in fish makes some species sensitive to environmental pollutants capable of mimicking or disrupting sex hormone actions, and such observations provide important insight into potential impacts from endocrine disruptors, and can provide useful monitoring tools for impacts on aquatic environments.
Journal ArticleDOI
Androgens in teleost fishes
TL;DR: 11-Oxygenated androgens are generally more effective than T in stimulating secondary sexual characters, reproductive behaviour and spermatogenesis in teleost fishes but receptor-like binding has only reported for T and not for 11KT.
Journal ArticleDOI
Ovarian aromatase and estrogens: A pivotal role for gonadal sex differentiation and sex change in fish
TL;DR: A broader hypothesis is extended that would place estrogens and Cyp19a1a in a pivotal position to control not only ovarian, but also testicular differentiation, in both gonochoristic and hermaphrodite fish species.
Journal ArticleDOI
Endocrine sex control strategies for the feminization of teleost fish
TL;DR: This review concentrates on the use of oestrogens for sex control, discussing the advantages of producing monosex female stocks for finfish aquaculture, and pointing out those cases in which hormonal sex reversal technology is worth applying.
Journal ArticleDOI
Endocrine and environmental aspects of sex differentiation in fish
TL;DR: Although steroids and steroidogenic enzymes are probably not the initial triggers of sex differentiation, new data, including molecular approaches, have confirmed that they are key physiological steps in the regulation of this process.
References
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Book ChapterDOI
5 Hormonal Sex Control and its Application to Fish Culture
TL;DR: The chapter examines the various components of hormonal sex control studies with particular reference to those factors that influence treatment success, and it is notable that the majority of studies onormonal sex control have involved gonochorist species.
Journal ArticleDOI
Onset of gonadotropic hormone accumulation in the immature trout pituitary gland in response to estrogen or aromatizable androgen steroid hormones.
TL;DR: A central effect of steroid hormones on pituitary GtH was confirmed by the fact that pituitaries implants did not increase liver weight as observed after perivisceral hormone treatment, and the possible participation of sex steroids in a mechanism of initiation of gonad recrudescence or onset of pubertal gonadal development in salmonids is discussed.
Journal ArticleDOI
Sex reversal in salmonid culture: Part II. The progeny of sex-reversed rainbow trout
TL;DR: A sample of the all-male population of rainbow trout resulting from the dietary administration of 17α-methyltestosterone at a concentration of 3 mg/kg of food to juvenile fish during the 90-day period following “swim up” was grown to sexual maturity and indicates that in rainbow trout the male is heterogametic for sex.
Journal ArticleDOI
Feminization of channel catfish by oral administration of steroid sex hormones
TL;DR: Oral administration of 17-β-estradiol or 17-α-ethynyltestosterone to sexually undifferentiated channel catfish Ictaturus punctatus during the first 21 days after yolk-sac absorption resulted in the production of 100% females.
Journal ArticleDOI
Production of All-Female and Sterile Coho Salmon, and Experimental Evidence for Male Heterogamety
TL;DR: Two coho salmon groups immersed in 17β-estradiol or 17α-methyltestosterone in the eyed-egg and alevin stages and spawned in December 1979 continued to grow during the 1-year period following the spawning of the cont...