Salad with Clams: Prey Choice of an Intentionally Carnivorous Turtle

2021 ◽  
Vol 28 (4) ◽  
Author(s):  
Kayleigh R. Erazmus ◽  
Luca Luiselli ◽  
Russell L. Burke
Keyword(s):  
Prey Choice

Prey choice affects the trade-off balance between predation and starvation in an avian herbivore

2006 ◽  
Vol 71 (6) ◽  
pp. 1335-1341 ◽  
Author(s):  
Richard Inger ◽  
Stuart Bearhop ◽  
James A. Robinson ◽  
Graeme Ruxton
Keyword(s):  
Prey Choice ◽  
Trade Off

Detecting Prey Preferences and Prey Switching

2021 ◽  
pp. 89-100
Author(s):  
John P. DeLong
Keyword(s):  
Functional Response ◽  
Single Species ◽  
Prey Choice ◽  
Prey Switching ◽  
Prey Preferences ◽  
Different Types ◽  
Simplified Analysis

In this chapter I consider the question of whether predators switch their preference for different types of prey as those prey change in abundance. There are numerous experiments in the literature focusing on this, but generally they have focused on a simplified analysis that ignores the functional response. Here I show why the functional response is crucial for understanding prey choice, and I show that null expectations considering a multi-species functional response lead to different interpretations than standard null expectations. I also derive null expectations for the proportion of prey consumed given the single-species functional response.

Foraging and avoiding predators

2020 ◽  
pp. 120-139
Author(s):  
Graham Scott
Keyword(s):  
Optimal Foraging ◽  
Feeding Behaviour ◽  
Predator Avoidance ◽  
Prey Choice ◽  
Urban Living ◽  
Cooperative Hunting ◽  
Cooperative Foraging ◽  
The Impact

The chapter considers the generalist and specialist diets of birds, and the behaviours and adaptations used by birds to find food. Special attention is given to the threat to birds from plastics pollution and the impact of plastic ingestion. Cooperative foraging and cooperative hunting are discussed as are the behaviours adopted by birds that do not cooperate or share. Feeding behaviour is considered in light of the theory of optimal foraging, particularly in relation to prey choice and to the balancing of risk. The impact of urban living upon the diets and foraging behaviours of birds is discussed. A broad range of predator avoidance behaviours are described and evaluated.

scholarly journals Modeling Incipient Use of Neolithic Cultigens by Taiwanese Foragers: Perspectives from Niche Variation Theory, the Prey Choice Model, and the Ideal Free Distribution

Quaternary ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 26
Author(s):  
Pei-Lin Yu
Keyword(s):  
Choice Model ◽  
Ideal Free Distribution ◽  
Variation Theory ◽  
Prey Choice ◽  
Encounter Rates ◽  
Free Distribution ◽  
Niche Variation ◽  
Native Populations ◽  
Ideal Free ◽  
The Ideal

The earliest evidence for agriculture in Taiwan dates to about 6000 years BP and indicates that farmer-gardeners from Southeast China migrated across the Taiwan Strait. However, little is known about the adaptive interactions between Taiwanese foragers and Neolithic Chinese farmers during the transition. This paper considers theoretical expectations from human behavioral ecology based models and macroecological patterning from Binford’s hunter-gatherer database to scope the range of responses of native populations to invasive dispersal. Niche variation theory and invasion theory predict that the foraging niche breadths will narrow for native populations and morphologically similar dispersing populations. The encounter contingent prey choice model indicates that groups under resource depression from depleted high-ranked resources will increasingly take low-ranked resources upon encounter. The ideal free distribution with Allee effects categorizes settlement into highly ranked habitats selected on the basis of encounter rates with preferred prey, with niche construction potentially contributing to an upswing in some highly ranked prey species. In coastal plain habitats preferred by farming immigrants, interactions and competition either reduced encounter rates with high ranked prey or were offset by benefits to habitat from the creation of a mosaic of succession ecozones by cultivation. Aquatic-focused foragers were eventually constrained to broaden subsistence by increasing the harvest of low ranked resources, then mobility-compatible Neolithic cultigens were added as a niche-broadening tactic. In locations less suitable for farming, fishing and hunting continued as primary foraging tactics for centuries after Neolithic arrivals. The paper concludes with a set of evidence-based archaeological expectations derived from these models.

Plant effects on prey choice by a vespid wasp, Polistes arizonensis

1996 ◽  
Vol 21 (3) ◽  
pp. 227-234 ◽  
Author(s):  
HEATHER L. GEITZENAUER ◽  
ELIZABETH A. BERNAYS
Keyword(s):  
Prey Choice ◽  
Plant Effects

Prey choice of Tengmalm's owls (Aegolius funereus funereus): preference for substandard individuals?

1996 ◽  
Vol 74 (5) ◽  
pp. 816-823 ◽  
Author(s):  
Vesa Koivunen ◽  
Erkki Korpimäki ◽  
Harri Hakkarainen ◽  
Kai Norrdahl
Keyword(s):  
Common Shrew ◽  
Common Vole ◽  
Clethrionomys Glareolus ◽  
Prey Choice ◽  
Aegolius Funereus ◽  
Nest Boxes ◽  
Bank Voles ◽  
The Common ◽  
Common Voles ◽  
Prey Items

Errington proposed that predators mainly kill substandard prey, because dominant individuals force subordinate ones into poor habitats, where the predation risk is higher. We studied the prey choice of breeding male Tengmalm's owls (Aegolius funereus funereus) in 1992, when vole densities crashed. We trapped small mammals in the main habitat types in 21 owl territories, and simultaneously identified prey items cached by the same owls in their nest boxes. The main prey of owls in western Finland are the common vole (Microtus epiroticus), field vole (M. agrestis), bank vole (Clethrionomys glareolus), and common shrew (Sorex araneus). Common voles were the preferred prey of owls, followed by field voles, bank voles, and common shrews. Prey captured by owls tended to be lighter and smaller than those available in the field. This tendency was significant for field voles and common shrews. Field voles, common voles, and female common shrews captured by owls tended to have more internal fat than those available in the field. This tendency was significant for male field voles and female common shrews. Owls appeared to choose small individuals of some, but not all, prey species, and that these prey items were not in poor physiological condition.

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