Distribution, Conditioning, and Interspecific Effects of Blackmargined Aphids and Yellow Pecan Aphids (Homoptera: Aphididae) on Pecan

Bumroongsook, S.; Harvin, Marvin K.

doi:10.1093/jee/85.1.187

Cited by 27 publications

(7 citation statements)

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“…Other studies have suggested that the two aphid species may be differentially affected by natural enemies because M. caryella produces copious amounts of honeydew. It has been suggested that the honeydew of M. caryella may attract or arrest natural enemies to a greater extent than the honeydew of M. caryaefoliae (Bumroongsook andHarris 1992, Harris andLi 1996). Green lacewings are among the most abundant natural enemies in pecans (Liao et al 1985).…”

Section: Study Systemmentioning

confidence: 99%

“…Many studies show leaf chemistry changes markedly over the life of a leaf, with variable consequences for herbivore feeding (Wellings andDixon 1987, Kaakeh andDutcher 1992). Thirdly, the differences in the history of aphid feeding on the experimental leaves are likely to have influenced the results (e.g., Bumroongsook and Harris 1992). Phloem feeding insects may facilitate conspecific or heterospecific feeding by altering the flow of photosynthate or the amino acid composition in a way that increases the body size or reproduction of others (Shearer 1976, Kidd et al 1985, Heard and Buchanan 1998.…”

Section: Effects Of Competition On Aphid Reproductionmentioning

confidence: 99%

“…Studies of pecan aphids suggest that previous feeding by M. caryella reduces the performance of M. caryaefoliae (Petersen and Sandströ m unpubl.) and another aphid species, the yellow pecan aphid, Monelliopsis pecanis Bissel (Bumroongsook and Harris 1992). It is yet unclear whether this inhibition of later feeding aphids is due to the physical damage to the sieve elements that this aphid causes (Tedders and Thompson 1981) or to other, as yet unexplored factors involved with the induction of host plant resistance (Gianoli and Niemeyer 1996, Agrawal 1998.…”

Section: Effects Of Competition On Aphid Reproductionmentioning

confidence: 99%

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Variation in the outcome of competition between two aphid species on pecan: plants matter more than predators

Petersen

Hunter

2001

Oikos

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The relative importance of resource‐mediated competition versus apparent competition was studied in two native aphids, Monellia caryella, and Melanocallis caryaefoliae, on pecan, Carya illinoensis. We compared reproduction and body size of the two aphid species when they were caged on pecan leaves as single or mixed species, and when green lacewing larvae (Chrysoperla comanche or Chyrsopa nigricornis) were present or absent. The experiment was repeated two times on mature compound leaves in the field in the autumn of 1997 and summer of 1998 and once in a greenhouse, on young seedlings with simple leaves.  Our results suggest that interspecific competition was variable and asymmetric; in both the Summer 98 experiment and the greenhouse experiment, reproduction of M. caryaefoliae was significantly reduced in the mixed species treatments relative to the single species treatment, while M. caryella reproduction was significantly reduced only in the Summer 98 experiment. No evidence of an effect of competition on reproduction was found in the Autumn 97 experiment. M. caryella body size was reduced in one of the mixed species treatments in the Autumn 97 experiment. Body size of both aphid species was reduced in the mixed species treatments of the greenhouse experiment.  The introduction of green lacewing larvae reduced the reproduction of aphids in two of the three experiments in comparison to controls. However, a significant interaction between aphid and predator treatment (M. caryella in the greenhouse experiment) was found in only one experiment. Variation in the outcome of competition was more likely to be due to aspects of plant quality, including leaf age and previous aphid feeding.

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Section: Study Systemmentioning

confidence: 99%

Section: Effects Of Competition On Aphid Reproductionmentioning

confidence: 99%

Section: Effects Of Competition On Aphid Reproductionmentioning

confidence: 99%

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Variation in the outcome of competition between two aphid species on pecan: plants matter more than predators

Petersen

Hunter

2001

Oikos

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“…Interspecific interactions often occur among sap-feeding insects and may be intense between related taxa (Miller, 1967;Moran & Whitham, 1990). Plant phloem alterations can positively or negatively affect the performance of other phloem feeders (Way & Banks, 1967;Dorschner & Baird, 1989;Bumroongsook & Harris, 1992). Understanding interactions between phytophagous insects that share a common host plant is of ecological interest when studying host-plant acceptance and colonization processes.…”

Section: Introductionmentioning

confidence: 99%

Local and systemic responses induced by aphids in Solanum tuberosum plants

Dugravot

Brunissen

Létocart

et al. 2007

Entomologia Exp Applicata

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The aphids Macrosiphum euphorbiae (Thomas) and Myzus persicae (Sulzer) (Homoptera: Aphididae) are serious pests of potato ( Solanum tuberosum L.) (Solanaceae), notably in transmitting several plant viruses. Heterospecific interactions may occur between these two species as they are often seen at the same time on the same potato plant in the field. As aphid infestation is known to induce both local and systemic changes, we conducted experiments to determine the effect of previous infestation on probing behaviour and feeding-related parameters. We used the DC electrical penetration graph technique to characterize the influence of previous infestation by conspecific M. persicae or by heterospecific Ma. euphorbiae on M. persicae feeding behaviour at both local and systemic levels, i.e., on previously infested leaves and on non-previously infested leaves of infested plants, respectively. Conspecific and heterospecific infestation led to similar modification of M. persicae feeding activities. However, the effects of previous infestation occurring at the local level were opposite to those observed at the systemic level. Myzus persicae food acceptance was slightly enhanced on previously infested leaves, whereas it was inhibited on non-infested leaves of infested plants, which indicated an induced resistance mechanism. Our results advance the understanding of the mechanisms involved in aphid-host plant acceptance and colonization processes on potato plants in conspecific and heterospecific situations.

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“…Action levels of ~30 aphids per leaf are recommended before applying insecticide. Outbreaks typically peak at 10-20 aphids per leaf during a week or two, and then natural enemies and intrinsic characteristics of the pecan tree combine to reduce the number of aphids to lower levels (Bumroongsook and Harris 1992). Outbreaks can be exacerbated if abundance of natural enemies is reduced by earlier season treatments and/or unusually aphid-susceptible pecan cultivars like 'Cheyenne' are grown.…”

Section: Introductionmentioning

confidence: 99%