Searching Activities by Coccinellids on Rolled Wheat Leaves Infested by the Russian Wheat Aphid

Kauffman, W. C.; Laroche, S.L.

doi:10.1006/bcon.1994.1037

Cited by 19 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of prey refugia often plays a signiÞ-cant role in predator foraging success (Mitchell et al 1973, Grevstad and Klepetka 1992, Kauffman and LaRoche 1994, Clark and Messina 1998a, 1998b). In this system, we speculated that there may be partial prey refugia on the underside of large leaves because of the need for predators to grip leaf edges to remain on the plant.…”

Section: Discussionmentioning

confidence: 99%

“…Kauffman and LaRoche (1994) tested the ability of Þve aphidophagous coccinellids to exploit curled wheat leaves while foraging for Russian wheat aphids, Diuraphis noxia (Kurdjumov). They found that several lady beetle species could not enter leaf curls where aphids were feeding, and consequently the plant structure served as partial refugia for the prey species.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Effects of Plant Gross Morphology on Predator Searching Behaviour

Reynolds

Cuddington

2012

Environ Entomol

View full text Add to dashboard Cite

Plant morphology influences insect predators' abilities to capture prey and control pest populations. Several mechanisms for this effect of plants on predator foraging have been proposed. In particular, it is often claimed that increased complexity of plant structures may increase search time and reduce foraging success. Using time-lapse photography we recorded search paths, and compared the total path lengths, percentages of plants searched, and path tortuosity of adult multicolored Asian lady beetles (Harmonia axyridis Pallas) and green lacewing larvae (Chrysoperla carnea Stephens) foraging for pea aphids (Acyrthosiphon pisum Harris) on pea near-isolines (Pisum sativum L.) that differed in shape. We found that H. axyridis searched leafy morphologies less thoroughly than those with more branches, while C. carnea larvae search paths did not differ on any of the pea morphologies. In addition, the ability of H. axyridis to attach to plants and maneuver was increased on morphologies with many branches and edges, while C. carnea was able to attach to all morphologies. Both species, however, had significantly reduced predation success on inverted leaf surfaces. We conclude that undersides of leaves, far from the leaf margin, may serve as partial prey refugia. In addition, we find increased plant branching or an increase in other morphological features which provide predator attachment points may promote foraging success.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Effects of Plant Gross Morphology on Predator Searching Behaviour

Reynolds

Cuddington

2012

Environ Entomol

View full text Add to dashboard Cite

show abstract

“…The fourteen-spotted ladybird beetle has been mass-released in western North America for control of D. noxia (Obrycki et al, 1993) but has become established only in eastern North America (Day et al, 1994). Its small size and longstanding association with D. noxia in Eurasia led Kauffman & LaRoche (1994) to suggest that it may be well suited to exploit D. noxia populations on cereals. By observing beetles on both aphid-free and aphid-infested plants, we attempted to distinguish plant effects on searching behavior per se from plant effects on prey accessibility (Grevstad & Klepetka, 1992;Coll et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Plant architecture and the foraging success of ladybird beetles attacking the Russian wheat aphid

Clark

Messina

1998

Entomologia Exp Applicata

View full text Add to dashboard Cite

We examined the interaction between the fourteen‐spotted ladybird beetle, Propylea quatuordecimpunctata (L.), and the Russian wheat aphid, Diuraphis noxia (Mordvilko), on two grasses with divergent leaf architectures. Like wheat, crested wheatgrass bears flat, broad leaves, whereas Indian ricegrass produces slender, tightly rolled leaves. In the absence of aphid prey, residence times and time budgets of larvae and adults of P. quatuordecimpunctata were similar on the two hosts, although larvae tended to remain longer on crested wheatgrass. When aphids were present, both predator stages dislodged, contacted, and captured aphids at higher rates on Indian ricegrass than on crested wheatgrass. Predator time budgets and behavior sequences also reflected a greater predation risk for D. noxia on Indian ricegrass, and were consistent with earlier, population‐level experiments in the field. Comparisons between aphid‐free and aphid‐infested plants suggest that the effect of host plant in this tri‐trophic system largely depended on differences in the availability of prey refuges rather than on differences in predator searching behavior; proportionally more aphids fed in exposed locations on Indian ricegrass than on crested wheatgrass. Plant architecture is likely to be an important component of the predation risk of D. noxia because of the aphid's tendency to feed in relatively concealed locations.

show abstract

“…However, in the region of eastern Colorado and northeastern New Mexico where D. noxia remains a consistent problem (Elliot et al 1998), the combined contributions of resistant cultivars and biological control are relied on to avert losses, and additivity/synergism between these two tactics has been variously demonstrated (Farid et al 1997, Messina andSorenson 2001). For example, resistant cultivars are less prone to leaf-rolling when infested by D. noxia, and this is thought to improve biocontrol efÞcacy by providing predators and parasitoids better access to developing aphid colonies (Kauffman and LaRoche 1994;Kindler et al 1995;Messina et al 1997, Clark andMessina 1998a, b). The apparent failure of resistant cultivars in eastern Colorado in spring 2003 (Haley et al 2004) resulted in economically damaging D. noxia populations that could not be suppressed by the combined activities of various natural enemies, underlining the importance of interactions between biological control and plant resistance traits.…”

mentioning

confidence: 99%

Comparative Biology of a Novel Strain of Russian Wheat Aphid (Homoptera: Aphididae) on Three Wheat Cultivars

Jyoti

Michaud

2005

View full text Add to dashboard Cite

In spring 2003, several outbreaks of the Russian wheat aphid, Diuraphis noxia (Mordvilko), were reported in fields of supposedly resistant wheat cultivars ('Stanton', 'Halt', and 'Prairie Red') in eastern Colorado. We conducted two laboratory experiments to compare the biological performance of this new biotype 2 (B2) to that of two D. noxia collections of biotype 1 (B1) from western Kansas by using three wheat cultivars as host plants: 'Trego', a susceptible cultivar, and Stanton and Halt, two cultivars with different genetic sources of resistance. Survival of solitary nymphs from first instar to adult for the two clones of B1 on Trego was 96 and 90%, respectively, compared with 67 and 43% on Stanton, and 65 and 57% on Halt. In contrast, B2 had 60% survival on Trego, 43% survival on Halt, and 85% survival on Stanton. One clone of B1 required longer to mature on Halt compared with Trego or Stanton, but no other differences in developmental time among cultivars were significant. The standardized fecundity of solitary foundresses of the B1 clones was 19.6 and 20.1 nymphs on Trego, compared with 4.6 and 0.9 on Stanton, and 2.8 and 1.1 on Halt, respectively, over the same period. In contrast, fecundity of B2 was 21.1, 20.8, and 19.7 on Trego, Stanton, and Halt, respectively. When larger colonies developed on individual plants over longer periods, Trego supported the largest number of B1 aphids by experiment's end, whereas Stanton and Halt yielded the largest numbers of B2. The order of overall plant damage was Trego > Stanton > Halt when infested with B1, with no significant differences for B2. Trego had more pronounced leaf rolling than other cultivars, independent of biotype. Collectively, the results suggest that D. noxia B2 from Colorado has evolved cross-virulence to both Dn4- and Dny-based resistance sources.

show abstract

Searching Activities by Coccinellids on Rolled Wheat Leaves Infested by the Russian Wheat Aphid

Cited by 19 publications

References 0 publications

Effects of Plant Gross Morphology on Predator Searching Behaviour

Effects of Plant Gross Morphology on Predator Searching Behaviour

Plant architecture and the foraging success of ladybird beetles attacking the Russian wheat aphid

Comparative Biology of a Novel Strain of Russian Wheat Aphid (Homoptera: Aphididae) on Three Wheat Cultivars

Contact Info

Product

Resources

About