. Bulletin. Science; Natural history; Natural history. 18 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 10. Monarch butterflies mating. During an extended copulation time a source of energy* is transferred to the female as well as sperm. The energy- gained is thought to increase the female butterfly's life expectancy, and hence fecundity". ovipositing in many milk\\'eed patches, would maximize the frequency of having at least some offspring sun-'ive. V. Perspective The monarch. Danaus plexippus, is an immensely popular butterfly; size, color, distribution, abundance, and conspicuous winte
. Bulletin. Science; Natural history; Natural history. 18 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 10. Monarch butterflies mating. During an extended copulation time a source of energy* is transferred to the female as well as sperm. The energy- gained is thought to increase the female butterfly's life expectancy, and hence fecundity". ovipositing in many milk\\'eed patches, would maximize the frequency of having at least some offspring sun-'ive. V. Perspective The monarch. Danaus plexippus, is an immensely popular butterfly; size, color, distribution, abundance, and conspicuous winter aggregations give the monarch "celebrity ; Biology students are introduced to mimicr\- theor\- by the classical monarch-viceroy example (, Curtis and Barnes 1989; Villee et al. 1989; Campbell 1990). Winter roosting, summer breeding, and land use issues involving monarchs are given media coverage {op. cit.). The monarch has even been nominated as the United States National Insect ( Res. 411, introduced by Congressman Leon Panetta of Santa Cruz)! This high profile of the monarch butterfly cultivates appreciation of nature, sensitizes the public to ecological issues, and creates a positive image of science. On the negative side, familiarity may foster complacency, a sense that our knowledge of the monarch butterfly is complete and correct. Familiarity also may encourage concept-centered biology (Wenner 1989) which quashes controversy and narrowly interprets natural histor>' in support of a single popular hypothesis. Either of these simplifications retards scientific progress. A more complex and interesting monarch butterfly life histor\" emerges from consideration of all '"factors" that have influenced its evolution and stability. These selective factors may interact, and often encompass many interrelated fore-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - c
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