Patch use Under Predation Hazard: Effect of the Red Imported Fire Ant on Deer Mouse Foraging Behavior

Holtcamp, Wendee; Grant, William E.; Vinson, S. Bradleigh

doi:10.2307/2265998

Cited by 18 publications

(28 citation statements)

References 36 publications

(66 reference statements)

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“…Our results support other evidence that S. invicta can affect rodent behavior (Holtcamp et al 1997). In a laboratory setting with rich and poor foraging patches, Holtcamp et al (1997) found that deer mice, P. maniculatus, reduced within-patch handling time when S. invicta was present.…”

Section: Discussionsupporting

confidence: 90%

“…Although we did not test whether P. polionotus experiences diminishing returns while foraging, studies with similar Peromyscus spp. (P. maniculatus and P. leucopus) have found that the diminishing returns are experienced in the presence (Holtcamp et al 1997) and absence (Holtcamp et al 1997;Morris and Davidson 2000) of S. invicta. Similarly, rodents have been found to use fixed quitting harvest rate strategies, but may also use fixed-time foraging strategies (Morris and Davidson 2000).…”

Section: Study Location and Designmentioning

confidence: 99%

“…By pairing foraging trays within close proximity, it can be assumed that all metabolic foraging costs and missed-opportunity costs are the same, such that differences in giving-up density represent perceived changes in risk of competition or predation among the two foraging trays. Giving-up density has been successfully used to assess factors that affect foraging by rodents (e.g., Kotler et al 1991;Holtcamp et al 1997;Thorson et al 1998;Morris and Davidson 2000), including P. polionotus (Orrock et al 2004). Although not technically a density, we measure GUD as the proportion of seeds remaining in each foraging tray to provide information regarding relative changes caused by S. invicta, and facilitate comparison with other studies (Orrock et al2004); use of seed mass does not change our findings.…”

Section: Study Location and Designmentioning

confidence: 99%

“…In laboratory studies, deer mice, Peromyscus maniculatus, reduced time spent in foraging patches when S. invicta was present (Holtcamp et al 1997). Similarly, Pygmy mice, Baiomys taylori, avoided the arm of a Y-maze with crushed S. invicta in behavioral trials (Lechner and Ribble 1996).…”

Section: Introductionmentioning

confidence: 99%

“…Competition with S. invicta may be particularly risky because rodents that are not deterred by stings are more likely to be killed if S. invicta workers recruit nestmates. Given this evidence that S. invicta affects rodent activity (e.g., Lechner and Ribble 1996;Holtcamp et al 1997), a profitable next step would be to determine how S. invicta is incorporated into other costs (e.g., exposure to predators) that rodents encounter during foraging. For example, if S. invicta is present in a foraging area, do rodents shift their behavior in ways that increase their susceptibility to vertebrate predators (Kotler et al 1992)?…”

Section: Introductionmentioning

confidence: 99%

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Rodents balancing a variety of risks: invasive fire ants and indirect and direct indicators of predation risk

Orrock

Danielson

2004

Oecologia

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We used foraging trays to compare how oldfield mice, Peromyscus polionotus, altered foraging in response to the presence of fire ants, Solenopsis invicta, and in the presence of direct (predator urine) and indirect (sheltered or exposed microhabitat, moonlight, and precipitation) indicators of predation risk. Foraging reductions elicited by S. invicta were greater than reductions in response to well-documented indicators of risk (i.e., moonlit nights) and the presence of predator urine. The presence of S. invicta always led to reduced foraging, but the overall impact of S. invicta was dependent upon microhabitat and precipitation. When S. invicta was not present, foraging was greater in sheltered microhabitats compared to exposed microhabitats. S. invicta made sheltered microhabitats equivalent to more risky exposed microhabitats, and this effect was especially pronounced on nights without precipitation. The effect of S. invicta suggests that interactions with S. invicta may entail a potentially heavy cost or that presence of S. invicta may represent a more reliable indicator of imminent competition or predation compared to indirect cues of risk and predator urine. The presence of S. invicta led to reduced foraging under situations when foraging activity would otherwise be greatest (i.show $132#e., under vegetative cover), potentially reducing habitat quality for P. polionotus and the distribution of seeds consumed by rodents.

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Section: Discussionsupporting

confidence: 90%

Section: Study Location and Designmentioning

confidence: 99%

Section: Study Location and Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rodents balancing a variety of risks: invasive fire ants and indirect and direct indicators of predation risk

Orrock

Danielson

2004

Oecologia

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The possible role of predator–prey dynamics as an influence on early hominin use of burned landscapes

Hoare

2019

Evolutionary Anthropology

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Foraging in burned areas has been suggested to represent the earliest stage in the use and control of fire by early hominins. Recently burned areas offer immediate foraging benefits including increased search efficiency for high‐ranked food items and decreased hunting opportunities for ambush predators. As such, they provide a triple‐bonus (reduced risk from ambush, ease of terrestrial travel and higher foraging returns) for some primates. However, previous studies have not yet accounted for other types of predators e.g., coursing (endurance predators that can pursue prey over long distances) which were sympatric with hominins and may also have exploited these environments. Behavioral ecology studies on the use of burned landscapes by extant carnivores demonstrate that while some ambush predators avoid recently burned areas, coursing predators do take advantage of their immediate hunting opportunities. Research examining habitat selection by animals under the simultaneous threat of multiple predator species with different modes of hunting, and the diversity of Plio‐Pleistocene carnivore guild is suggestive of two possible evolutionary scenarios in which hominins could either have selected or avoided burned areas (3–2 mya), based on whether ambush or coursing predators were perceived as presenting the greatest risk.

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Presence of the red imported fire ant at gopher tortoise nests

et al. 2016

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Red imported fire ants (Solenopsis invicta; fire ants) are predators of turtle (Testudine) eggs and hatchlings, but little information is available indicating how and when fire ants detect turtle nests during incubation. Therefore, during 2014, we compared fire ant presence at gopher tortoise (Gopherus polyphemus) nests in burrow aprons in early and late incubation with paired burrow aprons that did not contain eggs. To determine whether fire ants were attracted to soil disturbance associated with nesting, we compared fire ant presence at physically disturbed burrow aprons without eggs (i.e., simulated empty nests) with paired burrow aprons with no disturbance or eggs at Ichauway, Georgia, USA. We found fire ants more frequently at nests than at paired aprons early in incubation, but not late in incubation. Additionally, we found no difference in fire ant presence between simulated empty nests and paired sites. Our results indicate that fire ants are attracted to gopher tortoise nests because of a factor other than the initial soil disturbance that accompanies nest deposition, possibly the mucous and moisture released by the female as eggs are laid. Ó 2016 The Wildlife Society.

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Patch use Under Predation Hazard: Effect of the Red Imported Fire Ant on Deer Mouse Foraging Behavior

Cited by 18 publications

References 36 publications

Rodents balancing a variety of risks: invasive fire ants and indirect and direct indicators of predation risk

Rodents balancing a variety of risks: invasive fire ants and indirect and direct indicators of predation risk

The possible role of predator–prey dynamics as an influence on early hominin use of burned landscapes

Presence of the red imported fire ant at gopher tortoise nests

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