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Titolo:
Spiders and harvestmen as gastropod predators
Autore:
Nyffeler, M; Symondson, WOC;
Indirizzi:
Univ Bern, Inst Zool, Div Ecol, CH-3012 Bern, Switzerland Univ Bern BernSwitzerland CH-3012 , Div Ecol, CH-3012 Bern, Switzerland Cardiff Univ, Sch Biosci, Cardiff CF10 3TL, S Glam, Wales Cardiff Univ Cardiff S Glam Wales CF10 3TL ardiff CF10 3TL, S Glam, Wales
Titolo Testata:
ECOLOGICAL ENTOMOLOGY
fascicolo: 6, volume: 26, anno: 2001,
pagine: 617 - 628
SICI:
0307-6946(200112)26:6<617:SAHAGP>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORB-WEAVING SPIDERS; CARABID BEETLES; ABAX-PARALLELEPIPEDUS; LYNX SPIDER; PREY; COLEOPTERA; ARANEAE; FIELD; ARANEIDAE; SLUGS;
Keywords:
Araneae; convergent evolution; foraging behaviour; malacophagy; Opiliones; prey choice; slug; snail;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
111
Recensione:
Indirizzi per estratti:
Indirizzo: Nyffeler, M Univ Bern, Inst Zool, Div Ecol, Baltzerstr 3, CH-3012 Bern, Switzerland Univ Bern Baltzerstr 3 Bern Switzerland CH-3012 , Switzerland
Citazione:
M. Nyffeler e W.O.C. Symondson, "Spiders and harvestmen as gastropod predators", ECOL ENT, 26(6), 2001, pp. 617-628

Abstract

1. Reports are reviewed of gastropod feeding (malacophagy) by spiders and harvestmen. Although the standard textbooks on arachnids recognise the importance of gastropods as prey of harvestmen, none apparently refers to malacophagy by spiders. A review of several hundred papers on spider feeding habits revealed that species from several families kill and devour slugs and snails in the laboratory and/or field.2. Malacophagy has been reported most frequently among mygalomorph spiders, and can make up a substantial proportion of the diets of some species, however gastropods make up an insignificant percentage of the prey of most araneomorph spiders. The spiders that eat gastropods are species with broad diets composed predominantly of arthropod prey. No species of spider appearsto feed exclusively on gastropod prey.3. Harvestmen from several families have broad diets that often include gastropods. Several species of the family Trogulidae and at least one speciesof the family Ischyropsalididae [Ischyropsalis hellwigi (Panzer)] are specialised gastropod predators. The trogulids are slender animals that attack the snail through the shell aperture (shell intruders). Ischyropsalis hellwigi, on the other hand, can crush snail shells with its powerful chelicerae(shell breakers).4. The review highlights apparent convergent evolution by harvestmen and Carabidae of two mutually exclusive morphologies found among gastropod predators. It also suggests that there is an urgent need for systematic studies to be conducted to establish the extent and ecological importance of malacophagy in natural and anthropogenically altered habitats.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/10/20 alle ore 05:51:46