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Ova and Neonate Variation in the Southern Leopard Frog, Rana sphenocephala

Mark J. "Komo" Komoroski


I am completing research that concerns differences in egg and neonate size and quality among winter and summer breeding events in the southern leopard frog (Rana sphenocephala). In short, I have found that females which breed in summer produce smaller eggs and tadpoles than females which breed in winter. Also, eggs and tadpoles from summer breeding events have more non-polar lipids (or fat) - relative to egg or body size - as compared with eggs and tadpoles from winter breeding events, which means the smaller summer eggs or young tadpoles have proportionally more developmental fuel than the larger winter eggs or tadpoles.

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