Population Responses and Food Consumption by Predators<i>Coleomegilla maculata</i>and<i>Harmonia axyridis</i>(Coleoptera: Coccinellidae) During Anthesis in an Illinois Cornfield

Lundgren, Jonathan G.; Razzak, Anthony; Wiedenmann, Robert N.

doi:10.1603/0046-225x-33.4.958

Cited by 81 publications

(39 citation statements)

References 21 publications

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“…In field crops of the High Plains region of the central United States, however, H. axyridis has not become a prominent coccinellid, although it has been present there for more than a decade (Michaud & Qureshi, 2006). The difference may be due to either the arid climate or a certain preference of H. axyridis for arboreal habitats (Lucas et al, 1997), although its willingness to enter fields of corn (Zea mays) (Lundgren et al, 2004;Galvan et al, 2005) and soybean (Glycine sp.) (Fox et al, 2004;Mignault et al, 2006) appears rather anomalous in this perspective.…”

Section: Intraguild Relationsmentioning

confidence: 99%

Why is Coccinella septempunctata so successful? (A point-of-view)

Hodek¹,

Michaud²

2008

Eur. J. Entomol.

124

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Abstract. Factors were examined that could be responsible for the predominance of Coccinella septempunctata (C7) in most habitats of the Palaearctic and for its successful invasion of the Nearctic Region. C7 is euryphagous, but less polyphagous than Harmonia axyridis or Coleomegilla maculata in that it cannot develop or reproduce on non-aphid food. The intraguild status of C7 is intermediate. Although adult size is large, preimaginal stages are palatable to those of H. axyridis and Adalia bipunctata, whereas it is not an intraguild predator of these species. Although these traits appear to be neutral or negative, many aspects of population plasticity are advantageous for C7, often acting in concert with a bet-hedging strategy. Given its high mobility and eurytopy, the inhibition of oviposition in the presence of conspecific larval trails represents an adaptive advantage that favors increased egg dispersal and lowers the risk of offspring mortality due to cannibalism. The ability to temporarily suspend oviposition, combined with heterogenous voltinism and diapause tendencies, enable a portion of C7 populations to feed and reproduce on unpredictably occurring aphid populations. An absence of reproductive diapause in males and pre-hibernation mating are other significant adaptations, along with the tendency to produce offspring in excess of the carrying capacity of local food resources. We suggest that one explanation for the broad geographic success of C7 resides in an ecological plasticity that is based on both genetic and phenotypic polymorphisms.

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Section: Intraguild Relationsmentioning

confidence: 99%

Why is Coccinella septempunctata so successful? (A point-of-view)

Hodek¹,

Michaud²

2008

Eur. J. Entomol.

124

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“…On the other hand, alternative and suitable habitats such as field crops and orchards, vineyards, hedgerows and gardens on urban environments may be searched by the invader (Iablokoff-Khnzorian 1982;Adriaens et al 2007). For instance, corn fields are important for feeding and reproductive activity of H. axyridis in many invaded areas (Musser and Shelton 2003b;Nault and Kennedy 2003;Lundgren et al 2004;Musser et al 2004;Park and Obrycki 2004;Firlej et al 2005). Corn fields are common on the Azores and, thus, have the potential to contribute to the establishment of H. axyridis.…”

Section: Azores the First Failure Of H Axyridis?mentioning

confidence: 99%

Harmonia axyridis: What will stop the invader?

Soares

Borges

et al. 2007

BioControl

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In recent years Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) has become a very popular insect among biological control practitioners and scientists, not only for its potential to be an efficient biological control agent but also because it is considered invasive. Individuals of this species were deliberately introduced into several countries for biological control of different arthropods pests. However the predator itself became an invasive species, affecting the dynamics and composition of several guilds through direct or indirect interactions with established species, including intraguild predation. In this paper we discuss the reasons why the species has a high invasiveness and what are the limits to invasion by this species. It is not clear if the invasiveness of the beetle is linked to its biological, ecological and behavioural abilities, or to other factors such as invasibility and interactions between the invaders, the noninvaders, and the habitat, which may in part explain the reasons of its success and help us to answer the question ''what will stop the invader?'' We also discuss the reason for the absence of the predator in the Azores islands. Despite the intentional introduction of H. axyridis in the Azores and the high number of individuals released, there are no records of this species in the wild, despite recent extensive sampling effort. In this paper we discuss the reasons for the apparent failure or the delay in establishment of the predator. One factor which may hamper the establishment of H. axyridis in some of the Azores islands is the absence of winter

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“…The majority of entomophagous species consume plant-based foods (i.e., seeds, pollen, nectar, and vegetation) to augment their diet and improve various aspects of their fitness (Alomar and Wiedenmann 1996;Altieri and Whitcomb 1979;Coll and Guershon 2002;Lundgren et al 2004Lundgren et al , 2005. Diverse plant communities also support alternative prey ordinarily not found in monocultures, and these alternative prey can be used to sustain natural enemies when target pest densities are low (Andow 1991;Holt and Lawton 1994;Murdoch et al 1985;Symondson et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Population responses by Orius insidiosus to vegetational diversity

Lundgren

Wyckhuys²,

Desneux³

2008

BioControl

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The abundance of different life stages of Orius insidiosus (Say) (Heteroptera: Anthocoridae) and its prey were recorded in vegetationally diverse (soybean and agronomic weeds) and monoculture (soybean only) fields. Orius insidiosus adults and nymphs were more abundant in diversified plots than in monocultures. A similar number of O. insidiosus eggs were found in the two treatments, but twice as many eggs were laid on non-crop plants than on soybeans within the vegetationally diverse plots. Prey densities were equivalent in the two treatments. In olfactometer assays, naïve O. insidiosus females were unresponsive to odors from three weed species (morning glory, redroot pigweed and velvetleaf). The current results, coupled with previous experimental observations, lead us to believe that higher abundance of O. insidiosus in vegetationally diverse habitats could be related to improved fitness of the predator, which in turn is related to certain plant qualities (e.g., nutrition, plant architecture, etc.). Proximal cues are likely more influential to oviposition decisions by O. insidiosus females than volatile signals.

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Population Responses and Food Consumption by PredatorsColeomegilla maculataandHarmonia axyridis(Coleoptera: Coccinellidae) During Anthesis in an Illinois Cornfield

Cited by 81 publications

References 21 publications

Why is Coccinella septempunctata so successful? (A point-of-view)

Why is Coccinella septempunctata so successful? (A point-of-view)

Harmonia axyridis: What will stop the invader?

Population responses by Orius insidiosus to vegetational diversity

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