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Effects of Egg Size on Offspring Fitness and Maternal Fecundity in the Orangethroat Darter, Etheostoma spectabile (Pisces: Percidae)
Vol. 1986, No. 1 (Feb. 10, 1986), pp. 18-30
Stable URL: http://www.jstor.org/stable/1444883
Page Count: 13
You can always find the topics here!Topics: Eggs, Hatching, Starvation, Female animals, Photoperiod, Lizards, Population size, Food availability, Breeding seasons, Egg weight
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Effects of egg size on offspring fitness and maternal fecundity in the orange-throat darter, Etheostoma spectabile, were examined under a variety of environmental conditions. Offspring from larger eggs tended to be larger at hatching than those from smaller eggs although there was no effect of egg size on time to hatching. Growth rates of hatchlings that were fed were not a function of egg size. Under conditions of starvation, offspring from larger eggs were larger at starvation and took longer to starve than those from smaller eggs. Differences occurred in egg size and size-specific egg number among adult females maintained in the laboratory. The individual with the largest eggs also had the fewest per unit body size.