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An association between pregnancy levels of estrogen and progesterone and maternal behavior has been demonstrated in several taxonomic orders of nonprimate and primate mammals, but has not so far been investigated in the gorilla. In this study we investigated whether prepartum titers of urinary estrone conjugates (E1C) or pregnanediol-3α-glucuronide (PdG) were related to postpartum maternal behavior...
BAHR, N.I., C. R. P. PRYCE, M. DOBELI AND R.D. MARTIN. Evidence from urinary cortisol that maternal behavior is related to stress in gorillas. PHYSIOL BEHAV 64(4) 429-437, 1998.-By studying western lowland gorillas (Gorilla gorilla gorilla, n = 8) in zoological gardens via ethological and non-invasive physiological techniques, we have demonstrated that their postpartum maternal behavior is related...
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