Alien arthropod predators and parasitoids: interactions with the environment

Evans, Edward W.; Comont, Richard; Rabitsch, Wolfgang

doi:10.1007/s10526-011-9375-5

Cited by 16 publications

(13 citation statements)

References 110 publications

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“…All the facets of global change drive alien species invasions: Climate warming promotes invasions at all steps along an invasion process; extreme weather events, fragmentation and eutrophication may impair biotic resistance of native ant communities; and globalization and urbanization support an increasing influx of new species (Crist 2009;Walther et al 2009;Philpott et al 2009;Dukes 2011;Evans et al 2011). These changes of species composition and functional groups may affect predation rates and other processes mediated by ants therefore changing ecosystem functionality or (from a human perspective) ecosystem services (e.g.…”

Section: Global Changementioning

confidence: 99%

The hitchhiker’s guide to alien ant invasions

Rabitsch

2011

BioControl

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Alien ants are among the most deleterious predatory invertebrates causing havoc to native biodiversity including negative effects on other ant species, other invertebrates and vertebrates, particularly birds and lizards, ecosystem function, economy, animal and human health. The patterns of alien ant invasions and reasons for their success are among the most intensively studied facets of invasion ecology, with feedback to a general understanding of ant ecology. Alien ant management can intervene at any step during the invasion process, with action for preventive measures being the most efficient. Beside standard chemical treatments, new methods and technologies for mitigation and control of ant invasions are mostly in a trial stage. A brief outlook on the most promising offensive lines is given with particular attention paid to Wolbachia-symbiosis. Ultimately, an integrative alien species management strategy is imperative to cope with accelerating biodiversity losses due to biological invasions.

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Section: Global Changementioning

confidence: 99%

The hitchhiker’s guide to alien ant invasions

Rabitsch

2011

BioControl

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“…There is a possibility of a worse scenario as pointed out recently by many authors (for example, Dukes & Mooney, 1999;Walther et al, 2009;Evans et al, 2011a). They stress that habitat fragmentation and changes in climate can increase the adverse effect of invasive species by reducing the number of refuge habitats for native species in which they can avoid exploitative competition and direct predation from the invaders.…”

Section: Resultsmentioning

confidence: 99%

Laboratory studies on intraguild predation and cannibalism among coccinellid larvae (Coleoptera: Coccinellidae)

Rondoni¹,

Onofri²,

Ricci³

2012

Eur. J. Entomol.

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Abstract. Intraguild predation (IGP) and cannibalism occur in the field and could affect the dominance structure of guilds of coccinellid species. The exotic biological control agent Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) is now well established in most areas of Northern and Central Italy, but it is unclear what effect this species could have on native dominant and non-dominant coccinellids with which it co-occurs. In order to predict the trophic interactions in coccinellid guilds and the likely effect of H. axyridis, the incidence of IGP and cannibalism among the following six species were evaluated under laboratory conditions: H. axyridis, three native dominant species, Adalia bipunctata (L.), Oenopia conglobata (L.) and Coccinella septempunctata L. and two native non-dominant species, Platynaspis luteorubra (Goeze) and Scymnus apetzi (Mulsant). Unfed and fed fourth instar larvae of the above species were paired in an experimental arena and the incidence of predation recorded over a period of 24 h. In absence of aphids, the survival probabilities (SP) of A. bipunctata and O. conglobata were lowest when paired with either C. septempunctata or H. axyridis (< 0.20 SP after 24 h). The SP of C. septempunctata was similar if paired with either a conspecific larva or H. axyridis (< 0.34 SP after 24 h) and that of H. axyridis was reduced similarly if paired with either a conspecific larva or C. septempunctata (> 0.71 SP after 24 h). The SP of P. luteorubra was lower when paired with A. bipunctata and C. septempunctata (< 0.07 SP after 24 h) than with other species and that of S. apetzi was greatly reduced when paired with all the dominant and exotic species (< 0.27 SP after 24 h). In presence of aphids no predatory events occurred in most combinations. H. axyridis acted as a strong predator of native dominant and non-dominant coccinellids when the aphids are scarce. We did not find any evidence, however, that the incidence of IGP among exotic and native species is higher than either IGP or cannibalism in native species. The likelihood of IGP occurring in the field is discussed. 353* GR and CR contributed to all the phases of the work and AO contributed to the statistical analysis.

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“…Europe (Evans et al 2011b). Many of the alien arthropod records are from urban or man-made habitats.…”

Section: Future Trendsmentioning

confidence: 99%

Inventory of terrestrial alien arthropod predators and parasites established in Europe

Roy

Roques³

2011

BioControl

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There are currently 1590 terrestrial arthropod species identified as alien to Europe. Of these, 513 are predators or parasites. The largest group is the insects (409 species), followed by spiders (47 species), myriapods (34 species) and mites (23 species). The species within these alien groupings are extremely diverse, as highlighted by the large number of families represented (115 families). The majority (66.1%) of alien arthropod predator and parasite species arrived unintentionally, but at least 174 (33.9%) have been introduced intentionally, mainly for biological control purposes. Assessment of the major invasion pathways is difficult due to the lack of comprehensive information but it is likely that the majority of predatory or parasitic alien arthropods arrive through leading-edge dispersal or as contaminants and stowaways. The number of new species arriving in Europe has progressively increased since 1500, with the increase in global trade over the last century accelerating this rate of increase. Only a small number of alien predatory and parasitic arthropods in Europe have been shown to cause either an ecological or economical impact, yet knowledge is severely limited by a paucity of data.

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Alien arthropod predators and parasitoids: interactions with the environment

Cited by 16 publications

References 110 publications

The hitchhiker’s guide to alien ant invasions

The hitchhiker’s guide to alien ant invasions

Laboratory studies on intraguild predation and cannibalism among coccinellid larvae (Coleoptera: Coccinellidae)

Inventory of terrestrial alien arthropod predators and parasites established in Europe

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