Alien Non-Marine Snails and Slugs of Priority Quarantine Importance in the United States: A Preliminary Risk Assessment

Cowie, Robert H.; Dillon, Robert T.; Robinson, David G.; Smith, James W.

doi:10.4003/006.027.0210

Cited by 113 publications

(94 citation statements)

References 113 publications

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“…These are among the most damaging gastropods in Hawaii and other parts of the U.S. (Staples and Cowie 2001;Cowie et al 2009), and A. fulica, which is one of the largest land snails in the world (Mead 1961), has been designated as one of the world's most damaging pests (Lowe et al 2000). In Hawaii, A. fulica and V. cubensis are among the five most frequently observed gastropod species in horticultural settings (Cowie et al 2008) and they are established in wet forests (Meyer and Cowie 2010).…”

Section: Gastropod and Plant Species Testedmentioning

confidence: 99%

Trait-based plant mortality and preference for native versus non-native seedlings by invasive slug and snail herbivores in Hawaii

2014

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Non-native herbivores may alter plant communities through their preferential consumption of seedlings of different species. We assessed seedling herbivory by two invasive gastropod species in Hawaii, the giant African snail (Achatina fulica) and the Cuban brown slug (Veronicella cubensis). We hypothesized that six native species would suffer greater gastropod herbivory than four non-native species, and that species with short stature, thin leaves, and lacking physical defenses would suffer the greatest mortality from gastropods. Herbivory was measured during 13-day preference trials using enclosures that each contained four different woody species (two native, two non-native) and were assigned to one of three treatments: giant African snail, Cuban brown slug, or control (no gastropod). Discriminant function analysis was used to predict gastropod-induced seedling mortality from a suite of seedling characteristics. Native species did not always experience greater herbivory than non-natives species, and seedling mortality was 0-100 %. Native Pipturus albidus and Clermontia parviflora suffered 100 % mortality from V. cubensis herbivory, and P. albidus, Psychotria hawaiiensis, and Myrsine lessertiana suffered C80 % mortality from A. fulica. Two non-natives (Fraxinus uhdei, Clidemia hirta), and two natives (Metrosideros polymorpha, Diospyros sandwicensis), suffered little damage and no mortality. Non-native Ardisia elliptica suffered 10-30 % gastropod mortality, and non-native Psidium cattleianum mortality was 0-50 %. Leaf thickness best predicted species mortality caused by slugs and snails; some thicker-leaved species suffered most. Invasive snails and slugs threaten some native and non-native seedlings by directly consuming them. Current and future plant community structure in Hawaii may in part reflect the feeding preferences of invasive gastropods.

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Section: Gastropod and Plant Species Testedmentioning

confidence: 99%

Trait-based plant mortality and preference for native versus non-native seedlings by invasive slug and snail herbivores in Hawaii

2014

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“…For three decades, the only published North American record of X. obvia (then reported as Helicella obvia) was this Bethany population, but more recently, X. obvia has been found in the United States, first at Detroit, Michigan, in 2001 in a Canadian Pacific rail yard (Robinson and Slapcinsky 2005) and most recently in Cascade County, Montana (Montana Natural Heritage Program 2013). Xerolenta obvia is ranked moderately high in a list of terrestrial gastropod species that are potential major pests (Cowie et al 2009). In the last several years, the continuing existence of the Bethany population has been confirmed (Grimm et al 2010) and somewhat chance encounters of this species by biologists, naturalists, and landowners, have added several new records.…”

mentioning

confidence: 99%

Forty years later: distribution of the introduced Heath Snail, Xerolenta obvia, in Ontario, Canada (Mollusca: Gastropoda: Hygromiidae)

Forsyth¹,

Oldham²,

Snyder³

et al. 2015

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Xerolenta obvia is a Central European land snail that has been introduced to Ontario, Canada, where it was first recorded in the literature in 1975 from a single population at Bethany (City of Kawartha Lakes). Over the four decades since that publication, additional records have been found clustered near Bethany, within the City of Kawartha Lakes, neighbouring Peterborough and Northumberland counties, as well as the Regional Municipality of Durham. Two distant sites are also now known, one in rural Ottawa (southeastern Ontario), and one at Windsor, Essex County (southwestern Ontario).

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“…In Israel, a shipment of 23 tonnes of apples has been sent back to France after several live white snails were discovered (Mienis & Rittner, 2010). The species C. (C.) virgata is on quarantine lists in the U.S. and Canada (Cowie et al, 2009). Michalak (2010) systematized data on intercepted shipments arriving in the U.S. over the period that contained the invasive quanrantine species C. (C.) virgata.…”

Section: Pest Significance and Control Of C (C) Virgatamentioning

confidence: 99%

“…Data from studies conducted outside Serbia (Godan, 1983;Baker, 1986Baker, , 1996Baker, , 2002Barker, 2002;Cowie et al, 2009;White-McLean, 2011) have shown that hygromiid snails may have considerable economic effect on cultivated plants, including vegetable crops. A survey of domestic and international literature revealed no report on damage by xerophilic snails on vegetables in our country, so that the data presented here constitute an initial report.…”

Section: Introductionmentioning

confidence: 99%

Damage caused by white snail Cernuella virgata (Da Costa) to green onion crop

Stojnić

Jokić

Djedovic

et al. 2013

Pesticidi i fitomedicina

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SuMMARYDamage caused by the white snail Cernuella virgata (Da Costa, 1778) was for the first time observed in vegetable crops in Serbia during the summers of 2011 and 2012. In this country, serious damage to vegetable crops is usually caused by slugs, while snails do not normally cause any significant harm. Typical xerophilic snail species in the genera Cernuella, Xerolenta and Theba cause damage even more rarely since they are limited to wild flora in uncultivated and ruderal areas, and local outbreaks occur seldom and only in forage leguminous crops. The species C. virgata was for the first time found to cause damage to a number of vegetable crops during long periods of extremely warm and dry weather, including total devastation of a green onion crop.

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Alien Non-Marine Snails and Slugs of Priority Quarantine Importance in the United States: A Preliminary Risk Assessment

Cited by 113 publications

References 113 publications

Trait-based plant mortality and preference for native versus non-native seedlings by invasive slug and snail herbivores in Hawaii

Trait-based plant mortality and preference for native versus non-native seedlings by invasive slug and snail herbivores in Hawaii

Forty years later: distribution of the introduced Heath Snail, Xerolenta obvia, in Ontario, Canada (Mollusca: Gastropoda: Hygromiidae)

Damage caused by white snail Cernuella virgata (Da Costa) to green onion crop

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