Argyrodes: phylogeny, sociality and interspecific interactions - a report on the Argyrodes symposium, Badplaas 2001

Whitehouse, M., Agnarsson, I., Miyashita, T., Smith, D., Cangialosi, K., Masumoto, T., Li, D. Q. and Henaut, Y. (2002) Argyrodes: phylogeny, sociality and interspecific interactions - a report on the Argyrodes symposium, Badplaas 2001. Journal of Arachnology, 30 2: 238-245. doi:10.1636/0161-8202(2002)030[0238:APSAII]2.0.CO;2

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Author Whitehouse, M.
Agnarsson, I.
Miyashita, T.
Smith, D.
Cangialosi, K.
Masumoto, T.
Li, D. Q.
Henaut, Y.
Title Argyrodes: phylogeny, sociality and interspecific interactions - a report on the Argyrodes symposium, Badplaas 2001
Journal name Journal of Arachnology   Check publisher's open access policy
ISSN 0161-8202
Publication date 2002
Sub-type Article (original research)
DOI 10.1636/0161-8202(2002)030[0238:APSAII]2.0.CO;2
Open Access Status File (Publisher version)
Volume 30
Issue 2
Start page 238
End page 245
Total pages 8
Place of publication New York, United States
Publisher American Arachnological Society
Collection year 2002
Language eng
Abstract Argyrodes Simon 1864 is a large, cosmopolitan theridiid genus whose members exhibit a wide range of foraging techniques which usually involve exploiting other spiders, either by using their webs, stealing their food, or preying on them directly. We held a symposium on this genus at the 15th International Congress of Arachnology, Badplaas, South Africa in order to obtain a clearer perspective on the relationship between the phylogeny of the genus and the different foraging techniques. We concluded that Argyrodes forms a monophyletic group within the Theridiidae, and that there are clear monophyletic clades within the genus (already identified as species groups) that appear to share behavioral characteristics. We found no clear indication that foraging behaviors such as kleptoparasitism (stealing food) evolved from araneophagy (eating spiders) or vice versa. However, it appears that species that specialize in either kleptoparasitism or araneophagy use additional techniques in comparison to species that readily use both foraging modes. During our examination of Argyrodes/host interactions we noted the importance of Nephila species as hosts of Argyrodes species around the world and the impact of Argyrodes on Nephila. We also noted the fluid nature of the relationship between Argyrodes and the spiders with which they interact. For example, an Argyrodes/host relationship can change to an Argyrodes/prey relationship, and the type of kleptoparasitic behavior employed by an Argyrodes can change when it changes host species. The importance of eating silk was also noted and identified as an area for further research. We concluded that more work involving international collaboration is needed to fully understand the phylogeny of the genus and the relationships between the different types of foraging behaviors.
Keyword Entomology
Kleptoparasitic Spider
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: Faculty of Science Publications
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Created: Tue, 14 Aug 2007, 17:28:29 EST