Food preferences of two sandy beach scavengers with different foraging strategies

Harris, Linda R.; Harris, Kylie

doi:10.1016/j.ecss.2019.02.001

Cited by 9 publications

(2 citation statements)

References 37 publications

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“…There was no significant difference between the number of ghost crab observations at AMDROtreated nests and cornmeal-treated nests, a finding consistent with previous research showing that ghost crabs primarily locate food by smell (Wellins et al 1989, Harris et al 2019. The scent of the cornmeal carrier could be a ghost crab attractant.…”

Section: Nest Survival and Productivitysupporting

confidence: 87%

Impact of the fire ant pesticide AMDRO on loggerhead turtle nest productivity and seafinding orientation

Smith

Hoover

Salmon

et al. 2020

Endang. Species. Res.

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Invasive fire ants prey on a variety of organisms in the southeastern USA, including the pipped eggs and hatchlings within sea turtle nests. The granular fire ant bait AMDRO® (active ingredient hydramethylnon) is currently used at some rookeries to protect nests, but no studies have been conducted to determine if the pesticide negatively impacts the eggs or the hatchlings. We examined the pesticide’s effect on loggerhead (Caretta caretta) nests at Juno Beach, Florida, USA, specifically targeting how exposure affected hatching success, hatchling emergence success, and the ability of the turtles to orient visually from the nest to the sea. Pesticide granules were placed within a 30 cm diameter circle on the sand directly above the nest during the final 5-10 days of incubation, representative of its typical application at nesting beaches. Cornmeal granules in soybean oil and untreated natural nests served as controls. AMDRO had no significant effect on hatching success or emergence success, nor did it result in any deficiencies in hatchling orientation accuracy. However, the pesticide and cornmeal control attracted other predators (Atlantic ghost crabs and avian species), in addition to fire ants, to the nest site, thus revealing the nest’s location and potentially increasing its vulnerability. Consequently, we suggest that its usage may not be beneficial at sites where predators other than ants are especially abundant.

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Section: Nest Survival and Productivitysupporting

confidence: 87%

Impact of the fire ant pesticide AMDRO on loggerhead turtle nest productivity and seafinding orientation

Smith

Hoover

Salmon

et al. 2020

Endang. Species. Res.

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show abstract

“…Under the framework of optimal foraging theory (Stephens and Krebs, 1986), animals are thought to have evolved foraging strategies that increase individual fitness by maximizing the benefits while minimizing the costs and risks related to the exploitation of resources in their natural habitats (Charnov, 1976). In turn, the outcomes of this optimization are suggested to be reflected in a variety of observable behaviors and domains, such as spatial ecology (Pyke, 2019b;Tórrez-Herrera et al, 2020), patch use (Bedoya-Perez et al, 2013) and dietary preferences (Harris et al, 2019). Accordingly, the evolution of foraging strategies must be accompanied by the evolution of (i) cognitive abilities that allow for a contextual computation of costs and benefits resulting in the decision-making processes expressed as behavior (Rosati, 2017) and (ii) their specific neuroanatomical correlates, such as overall brain size (e.g., DeCasien et al, 2017) or the size of specific brain regions involved in those processes (e.g., Louail et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Cost-Benefit Trade-Offs of Aquatic Resource Exploitation in the Context of Hominin Evolution

et al. 2022

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While the exploitation of aquatic fauna and flora has been documented in several primate species to date, the evolutionary contexts and mechanisms behind the emergence of this behavior in both human and non-human primates remain largely overlooked. Yet, this issue is particularly important for our understanding of human evolution, as hominins represent not only the primate group with the highest degree of adaptedness to aquatic environments, but also the only group in which true coastal and maritime adaptations have evolved. As such, in the present study we review the available literature on primate foraging strategies related to the exploitation of aquatic resources and their putative associated cognitive operations. We propose that aquatic resource consumption in extant primates can be interpreted as a highly site-specific behavioral expression of a generic adaptive foraging decision-making process, emerging in sites at which the local cost-benefit trade-offs contextually favor aquatic over terrestrial foods. Within this framework, we discuss the potential impacts that the unique intensification of this behavior in hominins may have had on the evolution of the human brain and spatial ecology.

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Social media in service of marine ecology: new observations of the ghost crab Ocypode quadrata (Fabricius, 1787) scavenging on Portuguese man-of-war Physalia physalis (Linnaeus, 1758)

et al. 2022

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Food preferences of two sandy beach scavengers with different foraging strategies

Cited by 9 publications

References 37 publications

Impact of the fire ant pesticide AMDRO on loggerhead turtle nest productivity and seafinding orientation

Impact of the fire ant pesticide AMDRO on loggerhead turtle nest productivity and seafinding orientation

Cost-Benefit Trade-Offs of Aquatic Resource Exploitation in the Context of Hominin Evolution

Social media in service of marine ecology: new observations of the ghost crab Ocypode quadrata (Fabricius, 1787) scavenging on Portuguese man-of-war Physalia physalis (Linnaeus, 1758)

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