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Articles by Gad DEGANI
Total Records ( 2 ) for Gad DEGANI
  Gad DEGANI and Svetlana YOM DIN
  The testis mRNA levels of b-follicle stimulating hormone (βFSH), b-luteinizing hormone (βLH), growth hormone (GH) and prolactin (PRL) of the mature male blue gourami (bg) (Trichogaster trichopterus sp.) were determined before and during sexual behavior (nest-building). The testis bgβLH mRNA level was significantly higher than that of bgβFSH and was more elevated before sexual behavior than during nest building and nursing of larvae. The bgPRL mRNA expression in the testes of males, which were building nests and nursing larvae, was significantly lower than that in inactive males. The mRNA levels of bgβFSH, bgβLH, bgGH and bgPRL in the pituitary were higher than they were in the testis. Thus, we propose that testis FSH, whose mRNA levels did not change significantly during sexual behavior, does not participate in spermatogenesis, in contrast to LH, which does. The bgGH and bgPRL mRNA transcription levels changed in the testis only slightly during sexual behavior. Nevertheless, these hormones may still take part in reproduction.
  Tali GOLDBERG , Gad DEGANI , Avital GAZITH GAZITH , Eldad ELRON and Eviatar NEVO
  The molecular DNA variation of Pseudepidalea viridis (syn. Bufo viridis) was studied by mitochondrial sequence analysis in samples from 28 populations, collected from 24 distinct areas in Israel, as well as from Egypt, Turkey, Iran and Germany. A fragment of 178 bp of the mitochondrial cytochrome b gene and a 363 bp long fragment of the mitochondrial control region were analysed by AMOVA test (p<0.0.5). Among populations, there were more variations in the cytochrome b than in the control region gene. This study supports the hypothesis that ecological conditions in a relatively small area have an effect on genetic variation.
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