Sentences with phrase «wild populations without»
«This accomplishment means we can collect and preserve milt (seminal fluid containing sperm) from wild populations without removing hellbenders from their environment.
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A recent review concluded that the wild population would disappear without the detox programme (The Auk, DOI: 10.1525 / auk.2010.127.4.969).
Without firm data on the scale of international trade in individual species, scientists can only guess at its impact on wild populations.
In the case of the Sumatran rhino, however, some conservationists worry that without a long - term strategy for reversing the environmental pressures that are killing them off, captive breeding alone can never restore the wild population.
Eventually there will be no need for the chimeras and surrogate parents, once the captive population has reached a size that individuals can be removed for wild release without endangering the continuance of the flock we will have reached our goal of a viable captive population.
Eventually there will be no need for the chimeras and surrogate parents, once the captive population has reached a size that individuals can be removed for wild release without endangering the continuance of the flock we will have reached our goal of a viable captive population.
The challenge: figuring out how to produce enough of the finicky tunnel - nesting bees without depleting wild populations.
Plans are also underway to develop a captive breeding population, as an «insurance policy» against the loss of the species in the wild, and this may also aid further studies into the species» biology and its venom, without the need to capture wild individuals.
To feed a growing population without paving more of wild nature for agricultural land, Ronald and Adamchak argue that all paths towards yield improvements should be considered and pursued.