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W. Weisser ; C. Braendle | 2001Aphids (Homoptera: Aphidoidea) produce a number of different phenotypes in their life-cycle, among which are winged (alate) and wingless (apterous) morphs. Lowe & Taylor (1964) and Sutherland (1969 a, b) were the first to suggest that aphid clon[...]
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B. Stadler ; W. Weisser ; A. Houston | 19941. This paper investigates the influence of life-history traits on the defence reactions shown by aphids. In particular, we combine experimental data on the reproductive biology of the monophagous aphid Uroleucon jaceae (L.) feeding on Centaurea[...]
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W. Weisser ; E. Siemann | London [GB] : Springer | Ecological studies (Springer Nature), ISSN 0070-8356 | 2004In the past two decades, an increasing number of ecologists have started to investigate the importance of biodiversity for ecological processes such as energy flow and nutrient cycling, often referred to as 'ecosystem functioning'. Insects are a[...]
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J. Sloggett ; W. Weisser | 2002In animals, inducible morphological defences against natural enemies mostly involve structures that are protective or make the individual invulnerable to future attack. In the majority of such examples, predators are the selecting agent while ex[...]
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W. Weisser ; B. Stadler | 1994In holocylic aphid species many different morphs are produced during the phase of parthenogenetic reproduction. Because these morphs differ in their life-histories, research has been focused on how individual life-histories can be explained in t[...]
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C. Braendle ; W. Weisser | 2001Many insect species have evolved a number of antipredator tactics among which the animal can choose when attacked by a natural enemy. While it is known that individuals may differ in how the antipredator tactics are employed, quantitative studie[...]
