Skewed birth sex ratio and premature mortality in elephants.

  title={Skewed birth sex ratio and premature mortality in elephants.},
  author={Joseph Saragusty and Robert Hermes and Frank Goeritz and Dennis Schmitt and Tom Hildebrandt},
  journal={Animal reproduction science},
  volume={115 1-4},
Sex allocation theories predict equal offspring number of both sexes unless differential investment is required or some competition exists. Left undisturbed, elephants reproduce well and in approximately even numbers in the wild. We report an excess of males are born and substantial juvenile mortality occurs, perinatally, in captivity. Studbook data on captive births (CB, n=487) and premature deaths (PD, <5 years of age; n=164) in Asian and African elephants in Europe and North America were… CONTINUE READING
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