Figure 1 - uploaded by Gregory F Grether
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-A map of the 34 colony sites, created using the 2004 map of the Cocha Cashu trail system, courtesy of the Cocha Cashu website, accessed 29 April, 2020, https://cochacashu.sandiegozooglobal.org/maps/
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Group-living spiders are rare, and can be divided into multiple subcategories based on their tolerance of group mates. While social spiders are cooperative, colonial spiders are often antagonistic towards conspecifics. We examined colony dynamics in a colonial species, Philoponella republicana (Simon, 1891), focusing on aggressive behaviors to furt...
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Context 1
... census and behavior observations.-We recorded the locations of 20 P. republicana colonies within 10 m of established trails ( Fig. 1) and observed each colony once within three weeks of discovery in a randomized order, between 0800 and 1800 hours. Fifteen colonies were in intact forest, while the other 5 colonies were in treefall gaps, near the edge of an oxbow lake, or near streams. To characterize colony web size dimensions, we measured the longest horizontal, the ...
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... intrusion experiment uncovered elevated levels of aggression among orb-web holders towards individuals found within their territories. As in the colonial species M. ocellatus (Buskirk 1975a, b), P. republicana orb web holders shook and vibrated their webs in response to approaching conspecifics. However, residents in connecting webs usually only displayed non-aggressive behavior (e.g., leg tapping) toward intruders, if they responded at all. ...
Context 3
... census and behavior observations.-We recorded the locations of 20 P. republicana colonies within 10 m of established trails ( Fig. 1) and observed each colony once within three weeks of discovery in a randomized order, between 0800 and 1800 hours. Fifteen colonies were in intact forest, while the other 5 colonies were in treefall gaps, near the edge of an oxbow lake, or near streams. To characterize colony web size dimensions, we measured the longest horizontal, the ...
Context 4
... intrusion experiment uncovered elevated levels of aggression among orb-web holders towards individuals found within their territories. As in the colonial species M. ocellatus (Buskirk 1975a, b), P. republicana orb web holders shook and vibrated their webs in response to approaching conspecifics. However, residents in connecting webs usually only displayed non-aggressive behavior (e.g., leg tapping) toward intruders, if they responded at all. ...
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