Pituitary response to LH-RH at different stages of gametogenesis in the rainbow trout (Salmo gairdneri)
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چکیده
منابع مشابه
Pituitary activation by bacterial endotoxins in rainbow trout (Salmo gairdneri).
Endotoxins from Escherichia coli and Aeromonas salmonicida caused marked cortisol production in the rainbow trout (Salmo gairdneri).
متن کاملEffects of changes of photoperiod on gametogenesis in the rainbow trout (Salmo gairdneri).
After their first reproductive period, adult male and female rainbow trout were put under three different photoperiodic regimes between January and June: (1) short daylength (6 h of light/day), (2) decreasing daylengths (16L : 8D leads to 10L : 14D), (3) skeleton photoperiod consisting of short day-length (6L : 18D) with a one-hour flash at various times during the dark cycle in a decreasing da...
متن کاملResponse of rainbow trout (Salmo gairdneri) to increased levels of available carbohydrate in practical trout diets.
1. The physiological response of rainbow trout (Salmo gairdneri) reared on different levels of available carbohydrate in practical trout diets having the same levels of energy and nitrogen for 16-24 weeks was determined. 2. Weight gain was significantly reduced in trout reared on the highest level of available carbohydrate, 210 g cerelose (alpha-glucose) kg, and there was a significant linear r...
متن کاملToxicokinetics of Fenvalerate in Rainbow Trout (Salmo Gairdneri)
An in vivo rainbow trout (Salmo gairdneri) preparation was used to evaluate the gill uptake and toxicokinetics of [3H]fenvalerate ([R,S]-α-cyano-3-phenoxybenzyl [R,S]-2-[4-chloro-phenyl]-3-methylbutyrate), a synthetic pyrethroid insecticide. Fish were exposed to technical-grade fenvalerate (0.28 or 23 ng/L) or an emulsifiable-concentrate formulation (16 ng/L) for 36 to 48 h. No significant effe...
متن کاملTesticular feed back on the hypothalamo - pituitary axis in rainbow trout ( Salmo gairdneri R . )
A testicular feed back on the hypothalamo-pituitary system was studied in male rainbow trout (Salmo gairdneri) after bilateral castration and steroid or testicular supplementation. Experiments were carried out at various periods of the spermatogenetic cycle ; in March-April (resting stage), June (initiation of spermatogenesis), October (end of spermatogenesis and before spermiation), and Decemb...
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ژورنال
عنوان ژورنال: Annales de Biologie Animale Biochimie Biophysique
سال: 1978
ISSN: 0003-388X
DOI: 10.1051/rnd:19780517