Assisted reproductive technologies (ARTs) have been proposed as a means of overcoming
the significant challenges of managing small, isolated populations of endangered species in …

Considerable information now is available about the basic reproductive biology of
elephants, especially females. However, as important as this knowledge is, it no longer is …

The province of Jujuy lies in the northwestern corner of Argentina, abutting Chile and Bolivia
in the west and northeast, and ranging from 500 to 6,000 m in elevation. As a result of its …

Biologists have developed a wide range of morphological, biochemical and physiological
metrics to assess the health and, in particular, the energetic status of individual animals …

African elephants, Loxodonta africana, are well known for their use of a low-frequency
'rumble'vocalization, which is thought to function in long-distance communication. Less work …

Up to 14% of Asian and 29% of African elephants in captivity are not cycling normally or
exhibit irregular cycles based on progestin profiles. To determine if ovarian acyclicity is …

Elephants possess many unique qualities, including some that relate directly to their
reproductive biology. Thus, comparative studies on elephants provide valuable information …

Induced ovulation resulting in normal embryos is rare in marsupials. In this study natural and
induced ovulations were compared in mature Sminthopsis macroura (n= 122). Comparison …

Hormone monitoring is a well established tool for evaluating endocrine activity of wildlife,
and has substantially enhanced captive management and propagation of a number of …

For decades, attempts to breed elephants using artificial insemination (AI) have failed
despite considerable efforts and the use of various approaches. However, recent advances …