Periodical cicadas
نویسندگان
چکیده
منابع مشابه
Life Cycle in Periodical Cicadas
-Several lines of evidence suggest that the 13-year life cycle is genetically dominant over the 17-year life cycle in periodical cicadas. They are: (1) 13-year dominance best predicts the decline of 17 -year Brood X, and concomitant increase in Brood XIX in the midwest, following a hypothesized 1868 hybridization with 13-year Brood XIX through assimilation of heterozygotes into Brood XIX; (2) t...
متن کاملEvolution of periodicity in periodical cicadas
Periodical cicadas (Magicicada spp.) in the USA are famous for their unique prime-numbered life cycles of 13 and 17 years and their nearly perfectly synchronized mass emergences. Because almost all known species of cicada are non-periodical, periodicity is assumed to be a derived state. A leading hypothesis for the evolution of periodicity in Magicicada implicates the decline in average tempera...
متن کاملPeriodical cicadas: a minimal automaton model
The Magicicada spp. life cycles with its prime periods and highly synchronized emergence have defied reasonable scientific explanation since its discovery. During the last decade several models and explanations for this phenomenon appeared in the literature along with a great deal of discussion. Despite this considerable effort, there is no final conclusion about this long standing biological p...
متن کاملRegional impacts of periodical cicadas on oak radial increment
We investigated the effects of periodical cicadas (Magicicada spp.) on growth of their hosts using records of radial tree-ring growth on oaks (Quercus spp., a common host genus) and pines (Pinus spp., a common nonhost genus) growing within the ranges of 13and 17-year broods. Growth of oaks was significantly depressed during years of adult emergence by about 4%. Effects in years following emerge...
متن کاملThe rise of periodical cicadas: a minimal automaton model
The origin and evolution Magicicada spp. life cycle is one of the most intriguing problems in evolutionary biology. These long term periodical life cycles with prime period (namely 13 and 17 years) and the incredibly synchronized emergence of the adults have defied all attempts of ultimate explanation. During the last 15 years a plethora of models and possible explanations for this phenomenon a...
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ژورنال
عنوان ژورنال: Nature
سال: 1989
ISSN: 0028-0836,1476-4687
DOI: 10.1038/341288b0