@article {8866,
	title = {Follicle growth during hibernation in the frog <i>Rana ridibunda </i>in Northern Greece},
	journal = {Israel Journal of ZoologyIsrael Journal of Zoology},
	volume = {42},
	number = {3},
	year = {1996},
	note = {TY  - JOURCited By (since 1996): 3Export Date: 8 September 2006Source: ScopusReferences: Anastasiadis, A.I., (1976) Elements of Advanced Mathematics and Statistics, 470p. , Aristotle University Press, Thessaloniki; Berger, I., Uzzell, T., The eggs of European water frogs (Rana esculenta complex) and their hybrids (1980) Folia Biol. (Krakow), 28, pp. 3-25; Berven, A.K., Factors affecting variation in reproductive traits within a population of wood frogs (Rana sylvatica) (1988) Copeia, 3, pp. 605-615; Chintiroglou, C., Koukouras, A., The feeding habits of three Mediterranean sea anemone species, Anemonia viridis (Forskal), Actinia aquina (Linaeus) and Cereus pedunculatus (Pennant) (1992) Helgola?nder Meeresunters., 46, pp. 53-68; Delgado, J.M., Gutierrez, P., Alfonso-Bedate, M., Annual ovarian cycle and plasma levels of 17{\^a}-estradiol in the frog Rana perezi (1990) Physiol. 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Academic Press, New York; Loumbourdis, N., Kyriakopoulou-Sklavounou, P., Reproductive and lipid cycles in the male frog Rana ridibunda in Northern Greece (1991) Comp. Biochem. Physiol., 99 A, pp. 577-583; Pancharatna, K., Saidapur, S.K., Ovarian cycle in the frog Rana cyanophlyctis: A quantitative study of follicular kinetics in relation to body mass, oviduct, and fat body cycles (1985) J. Morphol., 186, pp. 135-147; Pancharatna, K., Saidapur, S.K., A study of ovarian follicular kinetics, oviduct, fat body, and liver mass cycles in laboratory-maintained Rana cyanophlyctis in comparison with wild-caught frogs (1992) J. Morphol., 214, pp. 123-129; Rastogi, R.K., Izzo-Vitiello, I., DiMeglio, M., DiMatteo, L., Franzese, R., DiCostanzo, M.G., Minucci, S., (...), Chieffi, G., Ovarian activity and reproduction in the frog, Rana esculenta (1983) Zool. 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	month = {1996///},
	pages = {275-285},
	abstract = {The seasonal ovarian dynamics from September to June in natural populations of the frog Rana ridibunda in Northern Greece have been studied. A continuous change in the percentage and diameter size of the ovarian follicles during the hibernating season was found. Early vitellogenic follicles reached their maximum percentage in April-May and were lowest in February. A small increase of their percentage during December and January compared to the three previous months indicated continuous growth of the ovarian follicles during hibernation. Advanced vitellogenic follicles reached their maximum percentage in September and were lowest in March. Postvitellogenic follicles appeared from September onwards and their percentage increased continuously until February, except for a small decrease in December and a stable level during January. A negative correlation between body length and percentage of postvitellogenic follicles was found in March.},
	keywords = {Amphibia},
	author = {Loumbourdis, N. and Kyriakopoulou-Sklavounou, P.}
}
