Data/hora: 02/06/2024 02:27:39

Provedor de dados: | Naturalis Digital Academic Repository
País: | Netherlands
Título: | How do the molluscivorous beetles Carabus granulatus and Phosphuga atrata (Insecta, Coleoptera) deal with sinistral and dextral prey?
Autores: | Bergamin, Susan; Smits, Anne.
Data: | 2015
Ano: | 2015
Palavras-chave: | Carabidae; Silphidae; Lymnaea stagnalis; Molluscivory; Chirality; Predation; Behaviour; Mouth parts.
Resumo: | Predators of asymmetric prey (such as snails) are often  asymmetric themselves or display a predation behaviour that  is adapted to the asymmetry of their prey. We studied predation  of sinistral and dextral forms of the freshwater snail  Lymnaea stagnalis (Linnaeus, 1758) by two snail-feeding  beetle species, Phosphuga atrata (Linnaeus, 1758) and  Carabus granulatus Linnaeus, 1758. We investigated a possible  preference for or more efficient predation of prey items  with a certain coiling direction. We found that C. granulatus  displayed a preference for dextral snails, as opposed to P.  atrata, which did not show any preference. We also looked at  the asymmetry of the mandibles. In C. granulatus the left  mandible overlay the right one in a higher proportion of specimens  (93.7%) than in the non-molluscivorous carabid,  Calosoma inquisitor (Linnaeus, 1758) (86.7%), whereas these  differences were reversed in P. atrata and the non-molluscivorous  silphid Oiceoptoma thoracicum (Linnaeus, 1758)  (77.0% and 87.4%, respectively). We discuss our results in  the context of differences in feeding behaviour: C. granulatus  uses its mandibles to tear the body of the snail as it has withdrawn  itself in its shell, whereas P. atrata feeds by pre-digesting  the snail.
Tipo: | Article / Letter to the editor

Identificador:

http://www.repository.naturalis.nl/record/588051

http://www.repository.naturalis.nl/document/621882

Formato: | application/pdf
Fonte: | Various articles ( 1572-6371) vol.13 (2015) p.49
Fonte: | (c) Naturalis