Diversity of spiders (Araneae) in the anthropic land covers of Davao City, Philippines

Sabanal, Brian; Achondo, Marion John Michael; Alviola, Pedro A.; Gamalo, Lief Erikson; Responte, Mae

doi:10.52547/jad.2022.4.4.4

JAD

2022

DOI: 10.52547/jad.2022.4.4.4

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Diversity of spiders (Araneae) in the anthropic land covers of Davao City, Philippines

Brian Sabanal¹,

Marion John Michael Achondo²,

Pedro A. Alviola³

et al.

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2024

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Cited by 1 publication

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How Urban-Tolerant Are They? Testing Prey–Capture Behavior of Introduced Jorō Spiders (Trichonephila clavata) Next to Busy Roads

Davis,

Stewart,

Phelan

et al. 2024

Arthropoda

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An invasive orb-weaving spider from east Asia is now spreading through the southeastern United States; Trichonephila clavata (the “jorō spider”) makes large, imposing webs seemingly everywhere, including in urban landscapes, and even next to busy roads. However, areas near roads come with frequent disturbances, including auditory and vibrational, which for many animals, leads to physiological or behavioral changes. Here we tested if varying levels of road traffic affect the prey–capture behavior of jorō spiders in northeast Georgia. We visited roadsides that ranged in traffic density and exposed nearby jorō spiders to a simulated prey (a tuning fork at 128 hz frequency, touched to the web), and recorded whether or not the spider attacked it. Out of 357 total trials across 20 different roads, jorō spiders attacked the simulated prey 59% of the time, but at the local scale, there was high variability in this rate; at some roadsides, over 80% of the spiders attacked, while at others, less than 30% did. When all roads were considered collectively, there was a small but significant (negative) correlation between daily road traffic and spider attack rates. Put another way, spiders near moderate- to heavy-traffic roads were slightly less likely to attack than those near low-traffic roads (51% vs. 65%). Jorō spiders appear to be able to live near roads, but this does come with a cost in terms of prey capture. However, spiders near busier roads did not weigh less than those in other sites, suggesting they may be able to compensate for the disturbance. These findings add to the accumulating evidence around this species that points to its ability to exist in human-dominated landscapes, which will likely aid its spread in the introduced range.

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How Urban-Tolerant Are They? Testing Prey–Capture Behavior of Introduced Jorō Spiders (Trichonephila clavata) Next to Busy Roads

Davis,

Stewart,

Phelan

et al. 2024

Arthropoda

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Diversity of spiders (Araneae) in the anthropic land covers of Davao City, Philippines

Cited by 1 publication

References 61 publications

How Urban-Tolerant Are They? Testing Prey–Capture Behavior of Introduced Jorō Spiders (Trichonephila clavata) Next to Busy Roads

How Urban-Tolerant Are They? Testing Prey–Capture Behavior of Introduced Jorō Spiders (Trichonephila clavata) Next to Busy Roads

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