caa a22 4500 469097884 CHVBK 20180323133036.0 cr unu---uuuuu 170328e19921001xx s 000 0 eng 10.1007/BF00650327 doi (NATIONALLICENCE)springer-10.1007/BF00650327 Hieber Craig Department of Biology, St. Anselm College, 87 St. Anselm Drive, 03102-1310, Manchester, NH, USA aut Spider cocoons and their suspension systems as barriers to generalist and specialist predators [Elektronische Daten] [Craig Hieber] Summary: This study tests hypotheses regarding spider cocoons and their suspension systems as barriers to generalist and specialist predators. Evidence presented here suggests that the suspension systems ofMecynogea lemniscata andArgiope aurantia cocoons are effective barriers against small generalists such as ants, but fail to stop large generalists such as birds. Cocoon covers were found to be generally ineffective against generalist predators. Various component layers of these cocoons are shown, however, to be an effective barrier against the attack modes of specific predator guilds. Cocoon covers function primarily as barriers to specialists that use active "burrowing” larvae to gain entrance into the cocoon, while the flocculent silk layer is shown to be an effective barrier against specialists which use a long ovipositor to attack cocoons. These findings support suggestions that the primary role of the cocoon is to provide protection from predators and parasites. These results also support a close evolutionary relationship between cocoon architecture and specialized predators. Springer-Verlag, 1992 Spiders nationallicence Araneidae nationallicence Mecynogea nationallicence Argiope nationallicence Cocoon nationallicence Oecologia Springer-Verlag 91/4(1992-10-01), 530-535 0029-8549 91:4<530 1992 91 442 https://doi.org/10.1007/BF00650327 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00650327 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Hieber Craig Department of Biology, St. Anselm College, 87 St. Anselm Drive, 03102-1310, Manchester, NH, USA aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 91/4(1992-10-01), 530-535 0029-8549 91:4<530 1992 91 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer