Reproductive and lipid cycles in the male frog Rana ridibunda in northern Greece.
1. Reproductive and lipid cycles in the male frog Rana ridibunda were studied. 2. The spermatogenesis of Rana ridibunda is of the potentially continuous type. 3. During prehibernating season (September-November) a part of lipid is mobilized from fat bodies to other body sites or is transformed to other metabolites. 4. During wintering this frog consumes mainly glycogen. 5. In February the lipid is accumulated in the fat bodies and the liver mass shows a second peak, probably as a result of glycogen accumulation. 6. The greatest decrease of metabolites was observed during the breeding season and this is the result of the intensive activities related to the reproduction and maintenance.
Loumbourdis
N S
NS
Department of Zoology, University of Thessaloniki, Greece.
Kyriakopoulou-Sklavounou
P
P
D000704:Analysis of Variance; D000818:Animals; D001834:Body Water / Q000378:metabolism; D005216:Fat Body / Q000378:metabolism; D006115:Greece; D050356:Lipid Metabolism; D008099:Liver / Q000033:anatomy & histology / Q000378:metabolism; D008297:Male; D009929:Organ Size; D011895:Rana ridibunda / Q000378:metabolism / Q000502:physiology*; D012098:Reproduction / Q000502:physiology; D012621:Seasons; D013091:Spermatogenesis; D013737:Testis / Q000033:anatomy & histology / Q000378:metabolism