Rapid spread of Harmonia axyridis in Chile and its effects on local coccinellid biodiversity

Abstract

Brown, Peter M.J.; Bizama, Gustavo. 2016. Rapid spread of Harmonia axyridis in Chile and its effects on local coccinellid biodiversity. Diversity and Distributions, 22 (9). 982-994. 10.1111/ddi.12455 Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. The spread and impact of this species has been documented in Europe and North America, but no 28 information exists for South America. The aims of this study were to: 1) document the process of 29 invasion of H. axyridis in Chile, 2) compare the abundance of H. axyridis in different habitats with 30 varying degrees of disturbance, and 3) assess change in the coccinellid assemblages in alfalfa fields 31 over the six years following invasion. 32 Location Chile 33Methods The spread of H. axyridis was estimated using information from citizen scientists alongside 34 records from the National Pest Surveillance System. The abundance of H. axyridis in different habitat 35 types and of all coccinellids in alfalfa fields was assessed using yellow sticky traps. In alfalfa, the 36 variations in species richness, Shannon and Simpson diversity and equitability indices through time 37 were compared. 38

Predators and parasitoids of the harlequin ladybird, Harmonia axyridis, in its native range and invaded areas

“…In the field in central Chile, the assassin bug Zelus renardii Kolenati (Reduviidae) preyed on H. axyridis. Interestingly, this is another case where one invasive alien species is found preying on another invasive alien species, both of which being associated with anthropogenic habitats (Faúndez 2015;Grez et al 2016).…”

“…It has started to spread in some parts of western Asia (Orlova-Bienkowskaja 2014; Ukrainsky and OrlovaBienkowskaja 2014; Bukejs and Telnov 2015;Görür et al 2015;Roy et al 2016) and New Zealand (https:// www.mpi.govt.nz/document-vault/12261). In its invaded areas, H. axyridis can quickly become very common, posing a threat to native insect communities, especially to other ladybirds Grez et al 2016). It can also cause economic losses in horticulture and winemaking, as well as become a nuisance and health problem to some people (Koch and Galvan 2008;Roy et al 2016).…”

Harmonia axyridis (Coleoptera: Coccinellidae): Smelling the rat in native ladybird declines

“…The focus of this work has been actual or anticipated declines in native species abundance since the introduction of H. axyridis (e.g., Michaud, 2002;Martins et al, 2009;Adriaens et al, 2010;Roy et al, 2012Roy et al, , 2016Grez et al, 2016), although the detailed picture is complex (Harmon et al, 2007;Bahlai et al, 2015). This focus has been coupled to numerous ex-this amounts to a total budget of €198 million to €266 million per year (Chakir et al, 2016).…”

Fates of Rare Species under Siege from Invasion: Persistence of Coccinella novemnotata Herbst in Western North America alongside an Invasive Congener

“…The most prominent species currently among introduced lady beetles is Harmonia axyridis (Pallas). There is concern that this invasive species may be strongly, adversely affecting native lady beetles in many parts of the world (Roy and Brown, 2015;Grez et al, 2016;Roy et al, 2016;Kenis et al, 2017). In some cases, declines of native species have preceded introduction of this species (Honek et al, 2016).…”