Fecundity of San Marcos salamanders in captivity.
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We placed 24 pairs of adult San Marcos salamanders in small flow-through aquaria with rocks and aquatic moss. Some aquaria had clear marbles within tubes through which water upwelled into each aquarium. Seven clutches (eggs per clutch: mean = 34.7; range = 2 to 73) were produced during a 9-month period. Overall hatching success was 29.6%. One breeding pair reproduced 3 times (eggs per clutch: mean = 44; range = 27 to 59) at an average of 64-day intervals during a 191-day period. Once mature, a single female potentially could produce 176 eggs per year in captivity.
The South Western Naturalist, Vol. 52, no. 1 (2007-03-01).
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Najvar, Paige A.; Fries, Joe N.; and Baccus, John T., "Fecundity of San Marcos salamanders in captivity." (2007). KIP Articles. 1987.