Evolution of prolonged development: a life table analysis for
periodical cicadas.
Georgians can find the answer over the next few weeks by traveling north into the states mountains to witness the emergence of the latest brood of 17-year
periodical cicadas.
In 2011,
periodical cicada emergences were reported in 19 South Carolina counties.
In the Koenig and Liebhold study trees were not selected because of known cicada outbreaks on their sites but rather because the trees grew within the range of particular
periodical cicada broods, potentially underestimating the effects of cicadas on oak growth.
Considering that oviposition site choice seems suboptimal in these examples, in which there is no offspring dispersal, our results with
periodical cicadas, in which nymphs do appear to disperse, seem even more plausible.
When
periodical cicadas emerge, they do so in enormous numbers--up to 1,500,000 individual insects per acre, weighing over one ton cumulatively.
Brood XIX, a 13-year brood of
periodical cicadas, has the largest distribution of the
periodical cicada broods, being reported from Maryland south to Georgia, westward through Arkansas and easternmost Oklahoma, and north into southern Iowa.
Population responses of Peromyscus leucopus and Blarina brevicauda to emergence of
periodical cicada.
These
periodical cicadas live in eastern and central North America, where biologists and spring-wedding planners alike keep tabs on the 15 different cohorts, or broods.
All three
periodical cicada species, Magicicada septendecim, M.
Brood XIV of the
periodical cicadas emerged in nine counties in southern Indiana and 16 counties in southwestern Ohio during late May and June of 2008.
into the edges of deciduous forest fragments is likely a general phenomenon pertaining to most
periodical cicada broods and to most locations.
