Browsing by Author "S. HAIDER"

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Effects of mammalian pituitary gonadotropins on the seasonally quiescent ovary of the Indian wall lizard, Hemidactylus flaviviridis
(1989) U. RAI; S. HAIDER
Adult Indian wall lizards, Hemidactylus flaviviridis (Rüppell) with seasonally quiescent ovaries were treated either with ovine FSH or LH. Quantitative as well as histochemical observations revealed that only FSH could stimulate the ovarian growth and steroidogenesis whereas LH had no effect either on ovarian growth or on ovarian steroidogenesis. Copyright © 1989, Wiley Blackwell. All rights reserved
Induced spawning of maturing Indian catfish, Clarias batrachus (L.), using low doses of steroid hormones and salmon gonadotropin
(1994) S. HAIDER; N.V. RAO
Abstract. Effects of low doses of salmon gonadotropin (SG‐G100) and three steroids — 17α,20β‐dihydroxyprogesterone (17α,20β‐diOHprog), deoxycorticosterone (DOC) and progesterone — individually, or combinations of steroid with SG‐G100, on ovulation and hatching in Clarias batrachus (L.) were investigated. None of the steroids at any of the three different dose levels (1μg, 1·5μg/g and 2μg/g BW) could induce ovulation when injected alone. SG‐G100 at a dose level of 10 μg/g BW was not effective but at the dose level of 15 μg/g BW it could induce ovulation. All the three steroids at their lowest doses (1μg/g BW) when injected in combination with SG‐G100 (10μg/g BW) were significantly effective in inducing ovulation. When hatching percentage was taken into account, 17α,20β‐diOHprog in combination with SG‐G100 was found to be the most effective combination in comparison with other treatments. Copyright © 1994, Wiley Blackwell. All rights reserved