Nocturnal Surface Activity and Behavioural Responses to Floods inAllocosa senex(Araneae: Lycosidae)

Eight‐legged swimmers: Behavioral responses to floods in two South American spiders

“…Our results show that both Allocosa are able to withstand floods & Junk, 2002;Albín et al, 2017;Hayashi et al, 2015;Stratton et al, 2004;Suter et al, 2003Suter et al, , 2004. Morphological, physiological, and behavioral adaptations for facing floods have been reported in other arthropods such as scorpions, amblypygids, collembola, miriapods, and fire ants (Decleer, 2003;Hebets & Chapman, 2000;Marx et al, 2012;Mlot et al, 2011;Warburg, 2000).…”

“…These last species are able to survive the floods by remaining within their nests for up to 10 days. Wolf spiders are able to develop several strategies to face immersion such as vertical dispersion onto vegetation or rocks, aerial dispersal through ballooning, swimming across the water, or remaining in the burrow during the flood (Adis & Junk, 2002; Albín et al, 2017; Hayashi et al, 2015; Stratton et al, 2004; Suter et al, 2003, 2004). Morphological, physiological, and behavioral adaptations for facing floods have been reported in other arthropods such as scorpions, amblypygids, collembola, miriapods, and fire ants (Decleer, 2003; Hebets & Chapman, 2000; Marx et al, 2012; Mlot et al, 2011; Warburg, 2000).…”

“…Studies in individuals of A . senex inhabiting a coastal lagoon in Uruguay suggest that this species would show different adaptations to overcome unexpected and sudden changes in water levels (Albín et al, 2017). However, detailed comparisons between the two Allocosa species and between sexes are unavailable.…”