Biological Invasions: Theory and Practice (Oxford Series in by Nanako Shigesada

By Nanako Shigesada

Whilst a species colonizes a space that it has now not formerly inhabited, it's referred to as an "invasion", and it could lead to the extinction of endemic species. the rise in numbers of people vacationing the area offers possibilities for invasions through organisms and the unfold of illnesses akin to rabies and smallpox. utilizing the big volume of knowledge from stories in pest keep watch over and epidemiology, it really is attainable to build mathematical versions that could are expecting which species becomes invaders, which habitats are at risk of invasion, and the organic influence. This ebook provides a transparent and obtainable creation to the modeling of organic invasions. It demonstrates the most recent theories and types, and contains info and examples from numerous case reports exhibiting how those types could be utilized to difficulties from lethal human ailments to the unfold of weeds.

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Extra info for Biological Invasions: Theory and Practice (Oxford Series in Ecology and Evolution)

Sample text

Albopictus, the “Asian bush” or “Asian rock pool” mosquito Oc. japonicus japonicus [Hulecoeteomyia japonica] is also an invasive species that has been established outside of its native range (Japan, Korea, China and Russia) for more than a decade. It was first recorded in North America in 1998 and in Europe (France) in 2000 (Schaffner et al. 2003, 2009; Williges et al. 2008). Since Oc. j. japonicus is generally found in more northern climates within its native range (whereas Ae. g. Switzerland, Belgium, Germany).

This oscillating flight pattern is often called “dancing flight”. The sound produced by the male wing beat has a frequency of ~600 cs–l. The frequency of the wing beat of the females is lower than that of the males at 500–550 cs–1 and even lesser when engorged. Fig. 3 Dispersal and Host-Seeking Behaviour In most mosquito species, oogenesis can only be completed when the females take a blood-meal. Therefore, they have developed a complex host-seeking behaviour to locate a potential host. Primarily, the location of the host is based on olfactory, visual and thermal stimuli.

The microclimate influenced by the vegetation type, which causes increased humidity and reduced wind, strongly affects the dispersal behaviour. Therefore, females usually fly close to the ground or slightly above the top of the vegetation. According to the preferred microclimate requirements, some species occur in greatest numbers in open areas (mostly strong flyers), others in woodlands (woodland species are moderate flyers), a third group prefers edges of fields and forests and finally the fourth group comprises the urban domestic species, which are usually weak flyers (Gillies 1972; Bidlingmayer 1975).

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