By Leonard Brennan, Steve DeMaso, Fred Guthery, Jason Hardin,
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Extra resources for Where Have All the Quail Gone: The Texas Quail Conservation Initiative: A Proactive Approach to Restoring Quail Populations By Improving Wildlife Habitat
Example text
82). Wallace concluded that for morphological measurements, individuals commonly varied by up to 25% of the mean value; that is, from 5 to 10% of the individuals within a population differ from the population mean by 10–25% (Wallace 1923, p. 81). This was in opposition to the commonly held view of naturalists in the 19th century that individual variation was comparatively rare in nature. Mendel’s classic work was an attempt to understand the similarity of parents and progeny for traits that varied in natural populations.
A similar statement can be made about most of the issues we are faced with in conservation biology. , behavior, physiology, or interspecific interactions). 4 Applications of genetics to conservation Darwin (1896) was the first to consider the importance of genetics in the persistence of natural populations. He expressed concern that deer in British nature parks may be subject to loss of vigor because of their small population size and isolation. Voipio (1950) presented the first comprehensive consideration of the application of population genetics to the management of natural populations.
57) It would be of great interest to determine the critical factors controlling the variability of each species, and to know why some species are so much more variable than others. 4 Differences among populations, 26 Guest Box 2 Looks can be deceiving: countergradient variation in secondary sexual color in sympatric morphs of sockeye salmon, 29 Genetics has been defined as the study of differences among individuals (Sturtevant and Beadle 1939). If all of the individuals within a species were identical, we could still study and describe their morphology, physiology, behavior, etc.