Topic
Euceraphis punctipennis
About: Euceraphis punctipennis is a research topic. Over the lifetime, 8 publications have been published within this topic receiving 371 citations.
Papers
TL;DR: In this article, an analysis of the released molecules from 23 aphid species, mainly collected on their natural host plant from May to July, was performed by gas chromatography-mass spectrometry.
Abstract: Herbivore insects use a broad range of chemical cues to locate their host to feed or to oviposit. Whether several plant volatiles are effective allelochemicals for insects, the latter also emit molecules which have infochemical role. The (E)-β-farnesene (EBF) is a well-known aphid alarm pheromone commonly found in all previously tested species. Analysis of the released molecules from 23 aphid species, mainly collected on their natural host plant from May to July, was performed by gas chromatography–mass spectrometry. While EBF was identified as the main volatile substance in 16 species, alone or associated with other molecules, the alarm pheromone was only a minor component of the volatile molecule pattern of five other species. Moreover, two species, Euceraphis punctipennis and Drepanosiphum platanoides, did not release EBF at all but other terpenes were identified. This original observation raised the question on the utility and the source of the non-EBF volatiles. Are these potential infochemical substances produced by the aphid or only absorbed from the host plant? Here we determined that terpenes released by insects were not only provided by the host plants. Indeed, Megoura viciae emitted additional molecules than the ones from several aphid species reared on the same host plant. Moreover, no systematic relation between the feeding behaviour of the aphid species and the volatile releases was observed. Aphid terpene composition and proportion would provide reliable cues to identify the emitting organism, plant or insect. The next step of this work will be to determine the infochemical role of terpenes found in the range of tested aphid samples to better understand the relations between the different tritrophic levels.
159 citations
TL;DR: Marked and significant changes occurred in levels of soluble tannins in the damaged and adjacent leaves but the relationship between crude tannin levels and changed palatability was not simple cause and effect.
Abstract: Leaves of Betula were damaged artificially in April, June and August 1982. Palatability of damaged and adjacent undamaged leaves was assessed against controls in bioassays using the polyphagous Lepidoptera Spodoptera littoralis and Orgyia antiqua. Assessments were carried out at intervals from six hours to five months following each damage date. Palatability (relative proportions of leaves consumed) was significantly lower than controls in damaged and adjacent leaves after six hours and remained detectable for up to two months but this was less clear in the June-damaged samples and undetectable in the August group. Adjacent leaves were significantly affected whether distal or proximal to the damaged leaves. Marked and significant changes occurred in levels of soluble tannins in the damaged and adjacent leaves but the relationship between crude tannin levels and changed palatability was not simple cause and effect. No significant effects of damage on aphid (Euceraphis punctipennis) reproduction could be detected among birches in a growth room experiment in which half the trees were artificially damaged and half were controls. The results are discussed in the light of earlier work on induced defence in birch and five areas of significant new information represented by the results in this paper are identified.
84 citations
TL;DR: The reproductive and growth rates of some tree-dwelling aphids such as the sycamore aphid also decline in mid-summer and reproduction may cease or remain at a low level for up to 2 months, mainly in response to the deterioration in food quality.
Abstract: The concentration of soluble nitrogen in the leaves of many deciduous trees declines markedly as summer approaches and the leaves mature; there is a slight recovery at senescence (Lindemann 1948; Mittler 1958; Dixon 1963, 1971). The reproductive and growth rates of some tree-dwelling aphids such as the sycamore aphid (Drepanosiphum platanoidis (Schr.)) also decline in mid-summer and reproduction may cease or remain at a low level for up to 2 months, mainly in response to the deterioration in food quality. At this time the population consists almost entirely of adults in reproductive diapause (Dixon 1963). The reproductive rate of the birch aphid Euceraphis punctipennis also declines in mid-summer, but for a relatively short period. The extent to which this aphid, through its aggregation behaviour, overcomes the disadvantages of the variable quality of its food through the year is discussed in this paper.
43 citations
TL;DR: Seasonal variations in morphometrics, pigmentation and development of wax glands in the two species are described and compared and a key to European and North American species of Euceraphis is provided.
Abstract: . Aphids formerly regarded as Euceraphis punctipennis (Zetterstedt) are distinguished as two species, E.punctipennis and E.betulae (Koch), on the basis of cytological and morphological differences. E.punctipennis is primarily associated with Betula pubescens Ehrh., and E. betulae with B.pendula Roth. Seasonal variations in morphometrics, pigmentation and development of wax glands in the two species are described and compared. A key to European and North American species of Euceraphis is provided.
19 citations
TL;DR: This is the first paper which 3 aphid species determined in 3 genera on Betula spp.
Abstract: To date, about 400 aphid species have been recorded in Turkey (see References). However, this is the first paper which 3 aphid species determined in 3 genera on Betula spp. in Turkey. These species, namely Calaphis flava Mordvilko, Callipterinella calliptera (Hartig) and Euceraphis punctipennis (Zetterstedt) all belong to the family: Aphididae, subfamily: Myzocallinae, tribe: Calaphini and none of the species has previously been recorded in aphid fauna lists on Betula spp. in Turkey. Their synonyms, morphological characteristics and biological data, supported by literature, were also considered.
9 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2005 | 1 |
| 2003 | 1 |
| 1998 | 1 |
| 1996 | 1 |
| 1989 | 1 |
| 1984 | 1 |