Responses of Leptinaria unilamellata (Gastropoda: Subulinidae) to Novel Micro-Environmental Conditions: Shift in Shell Morphology and the Balance between Protection against Desiccation and Reproductive Success

Resende, Raquel Seixas; Cardoso, Simone Jaqueline; D’ávila, Sthefane

doi:10.2108/zs180201

Cited by 2 publications

(1 citation statement)

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“…Gastropod abundance fluctuates over the year, accompanying variations in meteorological variables (mainly temperature and rainfall) (Choi et al, 2004). Previous studies have reported positive (Morii et al, 2018) and negative (Pearson et al, 2006) effects of temperature on gastropods, whereas rainfall and high relative humidity have been consistently reported to favour molluscs (Morii et al, 2018;Resende et al, 2020). In Brazil, studies on seasonality and main drivers of gastropod abundance on arable crops are scarce, even though economic losses caused by these organisms have increased in recent years (Landal et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Contributions of climate andBrassica oleraceacultivar to gastropod abundance and assemblage in southeastern Brazil

Farias

D’ávila

Santos

et al. 2023

Agri and Forest Entomology

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Terrestrial gastropods (slugs and snails, Mollusca: Eupulmonata) are destructive pests of brassica crops. These organisms defoliate plants and contaminate the harvest, leading to reduced crop yield and marketability. Losses caused by molluscs have escalated in recent years in Brazil. We aimed to determine the seasonal activity of gastropods in brassica fields and unravel the environmental variables associated with these dynamics. Gastropod abundance, assemblage and within‐plant distribution were also compared among Brassica oleracea cultivars (broccoli, cabbage and cauliflower). Mild temperatures and rainy periods were found to coincide with gastropod peaks. Regression analyses confirmed a positive association of rainfall and humidity with gastropod abundance, whereas gastropod abundance increased with decreasing temperature. Deroceras laeve (Müller) (Agriolimacidae) and Bradybaena similaris (Férussac) (Bradybaenidae) were the most constant species. Mollusc abundance and assemblage differed amid B. oleracea cultivar; cabbage had the highest abundance and its species composition differed from broccoli and cauliflower. Slugs and snails were more concentrated on lower plant portions, regardless of the cultivar. Management efforts should be reinforced in mild‐temperature and rainy periods to reduce damage by gastropods, and cabbage should be monitored more closely than other cultivars.

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