Population RegulationRobert H. Tamarin |
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Page 32
... parasitic control must come about through a variety of parasites , working together harmoniously , rather than through one specific parasite , as is known to be the case with certain less spe- cialized insects , having a less well ...
... parasitic control must come about through a variety of parasites , working together harmoniously , rather than through one specific parasite , as is known to be the case with certain less spe- cialized insects , having a less well ...
Page 49
... parasites are sufficiently numerous to destroy 49 out of every 50 hosts , and when there are sufficient hosts to maintain this density of parasites . The parasites , then , are required to destroy 98 per cent . of the hosts , and so to ...
... parasites are sufficiently numerous to destroy 49 out of every 50 hosts , and when there are sufficient hosts to maintain this density of parasites . The parasites , then , are required to destroy 98 per cent . of the hosts , and so to ...
Page 123
... parasites . This would favour growth of the host population . As the hosts increase in number the chance of any parasite contacting a host necessarily improves , and so the parasite population also grows , in spite of the fact that some ...
... parasites . This would favour growth of the host population . As the hosts increase in number the chance of any parasite contacting a host necessarily improves , and so the parasite population also grows , in spite of the fact that some ...
Contents
Contents by Author | 1 |
Andrewartha H G 73 | 23 |
THE BIOTIC SCHOOL OF POPULATION REGULATION HISTORICAL | 27 |
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Common terms and phrases
AA plants abundance adrenal weight adult alternate foods Andrewartha and Birch animal populations balance behavior Biol biological biotic birds Bupalus causes changes Chitty chromosomal inversions climate cocoon density cocoons components crease curve cycles decline decrease density-dependent factor Didinium dispersal E. B. Ford Ecol ecologists ecology effect entomologists environment environmental equation evolution evolutionary example experiments extinction females fluctuations functional response gene genetic genotypes habitat herbivore host hypothesis important insect interaction intraspecific competition isocline Krebs laboratory larvae lation limited mammals mechanisms method mice Microtus Milne mortality moth myxomatosis natural control natural populations natural selection Nicholson numbers of animals numerical response observed organisms oscillations outbreaks paper parasites Peromyscus pests popu population density population growth population regulation predators prey density problem Proc rate of increase relation reproductive rodents sawfly Schwerdtfeger Slobodkin small mammals species survival temperature theory tion trophic level variables voles weather Zool