The Modification by Temperature of the Photoperiodic Control of Gonadal Development in the Lizard Xantusia vigilis

Copeia ◽  
1953 ◽  
Vol 1953 (1) ◽  
pp. 45 ◽  
Author(s):  
George A. Bartholomew
Keyword(s):  
Gonadal Development ◽  
Photoperiodic Control ◽  
Xantusia Vigilis

Photoperiodic control of cytokinin transport and metabolism in Chenopodium rubrum

1996 ◽  
Vol 98 (3) ◽  
pp. 564-570 ◽  
Author(s):  
Ivana Machackova ◽  
Josef Eder ◽  
Vaclav Motyka ◽  
Jan Hanus ◽  
Jan Krekule
Keyword(s):  
Chenopodium Rubrum ◽  
Photoperiodic Control

DIHYDROTESTOSTERONE IN ADOLESCENT MALE PLASMA WITH NORMAL AND ABNORMAL GONADAL DEVELOPMENT

1971 ◽  
Vol 68 (1_Supplb) ◽  
pp. S68
Author(s):  
D. Gupta ◽  
Eileen M. McCafferty ◽  
K. Rager ◽  
K. Jendricke ◽  
J. Bierich
Keyword(s):  
Gonadal Development ◽  
Adolescent Male

Postnatal growth rate and gonadal development in circadian tau mutant hamsters reared in constant dim red light

Reproduction ◽  
2000 ◽  
pp. 327-330 ◽  
Author(s):  
RJ Lucas ◽  
JA Stirland ◽  
YN Mohammad ◽  
AS Loudon
Keyword(s):  
Time Course ◽  
Red Light ◽  
Somatic Growth ◽  
Postnatal Growth ◽  
Gonadal Development ◽  
Testicular Development ◽  
Wild Type ◽  
Similar Time ◽  
Syrian Hamsters ◽  
Body Weights

The role of the circadian clock in the reproductive development of Syrian hamsters (Mesocricetus auratus was examined in wild type and circadian tau mutant hamsters reared from birth to 26 weeks of age under constant dim red light. Testis diameter and body weights were determined at weekly intervals in male hamsters from 4 weeks of age. In both genotypes, testicular development, subsequent regression and recrudescence exhibited a similar time course. The age at which animals displayed reproductive photosensitivity, as exhibited by testicular regression, was unrelated to circadian genotype (mean +/- SEM: 54 +/- 3 days for wild type and 59 +/- 5 days for tau mutants). In contrast, our studies revealed a significant impact of the mutation on somatic growth, such that tau mutants weighed 18% less than wild types at the end of the experiment. Our study reveals that the juvenile onset of reproductive photoperiodism in Syrian hamsters is not timed by the circadian system.

IMPLANTATION OF LHRH-a HORMONE TO STIMULATION OF GONAD DEVELOPMENT OF HUMPBACK GROUPER SECOND GENERATION ( F-2 )

2013 ◽  
Vol 5 (2) ◽  
Author(s):  
Tridjoko Tridjoko
Keyword(s):  
Body Weight ◽  
Second Generation ◽  
Gonad Development ◽  
Gonadal Development ◽  
Oocyte Diameter ◽  
2Nd Generation ◽  
Length Range ◽  
Concrete Tank ◽  
Implant Treatment ◽  
Stimulation Of

This study aimed to determine the effect of LHRH-a hormone implantation on gonadal development of humpback grouper, Cromileptes altivelis 2nd generation (F-2). Individuals used were 20 female grouper fish with weight range of 600-800 gram/fish and total length range of 28.0-30.0 cm. The treatment used 5 fish each with tagging. Grouper fishes were stocked into the 75 m3 circular concrete tank. Hormone of LHRH-a with dosage of 50 μg/kg body weight was used as implant treatment of (A) 1 time,, (B) 2 times, (C) 3 times, and (D) without implant. The results showed that implantation of LHRH-a hormone were significantly stimulate gonad development of humpback grouper second generation (F-2). Treatment of 3 times implant every month showed the best results produced  oocyte diameter up to 480 μm, while the control of oocyte diameter only reached <400 μm. Keywords: LHRH-a hormone, implantation, Humpback grouper, gonad development

A comparative study on growth and gonadal development of Litopenaeus vannamei broodstock fed different formulated feeds

2017 ◽  
Vol 24 (2) ◽  
pp. 306
Author(s):  
Yuling ZHANG ◽  
Kun LUO ◽  
Jie KONG ◽  
Mengqing LIANG ◽  
Sheng LUAN ◽  
...  
Keyword(s):  
Comparative Study ◽  
Litopenaeus Vannamei ◽  
Gonadal Development
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