77 grados Kelvin

LA SELECCIÓN DE RAZAS ES EL PRIVILEGIO … LA CONSERVACIÓN ex situ ES LA REGALÍA.

RESCUING ENDANGERED ANIMALS WITH ASSISTED REPRODUCTIVE TECHNOLOGY

Although numerous Assisted reproduction technology (ART) techniques are available to preserve and genetically manage giant pandas and other wildlife, the ones used most often are “low-tech,” for example, with fresh or frozen/thawed sperm, combined with extensive noninvasive monitoring of urinary or fecal hormones . There is less practical application of embryo technologies, largely because of the lack of basic knowledge about embryology in these rare species. Also, a major issue is the source of a surrogate species. For example, it is relatively easy to produce a Siberian tiger embryo in vitro, but where is the embryo to gestate? Maintaining a large population of generic tigers would be expensive and counter to traditional genetic management programs, and it is now well known that interspecific embryo transfer is not biologically efficient.
ART will continue to play a significant role in both understanding the biology and saving endangered animal species. However, progress will take many years, because the successful use of ART in one animal species cannot easily be transferred to another—the way that animals reproduce is as different as their genetic diversity and physical appearances. Nonetheless, as outlined here, there are exciting examples of successes demonstrating how advances that have occurred in human reproductive health and livestock production can have consistent application once the basic biology of a given species is well established.

Srm, Vol. 7, No. 2 / May 2009:21-25

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