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The effects of 17a -methyltestosterone administrated
by oral treatments on sex reversal and growth of guppy
poecilia reticulata peters, 1860
Funda TURAN, Ihsan AKYURT, Sehriban CEK.
University of Cukurova, Faculty of Fisheries 01330 Balcal? /Adana/Turkey.
Abstract
In this research, 17 a-Methyltestosterone were given to 0,018±0,002 g mean weight of larvae guppies with oral administration (0, 15, 30, 60). With this application; the best method and dosage on sex reversal, and also the effect of 17a Methyltestosterone on growth, mortality and pigmentation were investigated.
As a result, from the sex reversal point of view, highest value was detected at 60 ppm dosage group with a value of 75,7% sex reversed guppies. Moreover, Chisquare test revealed that all the dosage groups were found statistically different from the control group (P<0,01)
The highest values of mean growth, feed conversion coefficient and survival rates were 4,70 ± 0,14g, 1.71 and 3,74±0,11 respectively at 30 mg/kg dosage group.
ANOVA revealed that all dosage groups were statistically significant with different degrees from control group. The highest survival rates were 84,55% at 15 mg/kg dosage group. 17a-Methyltestosterone increased pigmentation on fish and gave better appearance.
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| New Publications |
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The Arab Scientists in Cooperation with The High Institute of Marine Research. Publish all the researches abstracts, which presented in The Regional Workshop on Marine Sciences and Natural Resources, Tishreen University, Lattakia, Syria, 25-26 May 2004.
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| New Publications |
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The Arab Scientists in Cooperation with The Egyptian Society for Biological Control of Pests . Publish all the researches abstracts, which presented in The First Arab Conference of Applied Biological Pest Control, Cairo, Egypt, 5-7 April 2004.
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| Conferences, Fez |
The First International Symposium on Environnement protection for development Biotechnological aspects. Fez, December
15 – 17, 2004.
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| Conferences, Syria |
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The Second Syrian-Egyptian conference in the Agriculture and Food.
Agriculture Faculty, Al-Baath university, Homs, Syria. 25-28 April, 05
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| Conference,Yemen |
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Current Status of Plant Protection in Yemen and Future Strategy.
Faculty of Agriculture, Sana'a University, Sana'a, yemen. December 18-20/2004
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| Conferences Canada |
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The 9th International Conference of the Orthopterists’ Society
Canada, on August 14 19, 2005
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| Conferences, Egypt |
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The First Arab Conference on Applications of Biological Control of Pests in Arab Countries
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| Workshop,Lebanon |
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New Workshop
Middle-East Academy for Medicine of Ageing
First Annual Middle-East Age & Aging Meeting
8-11 April, 2004
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| Publications |
Arab Society for Plant Protection (ASPP) in Cooperation with The Arab Scientists
Publish all the researches abstracts, which presented in the Eighth Arab Congress of
Plant Protection, held in Faculty of Agriculture, Omar Al-Mukhtar University, El-beida
City, Libya, October 12-16,2003
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