Interactions Between Predation Risk and Competition: A Field Study of Kangaroo Rats and Snakes

Amos Bouskila

doi:10.2307/1940639

Characteristics of kangaroo rats, Dipodomys merriami, associated with differential predation risk

Animal Behaviour ◽

10.1016/s0003-3472(05)80934-0 ◽

1990 ◽

Vol 40 (2) ◽

pp. 380-389 ◽

Cited By ~ 49

Author(s):

Martin Daly ◽

Margo Wilson ◽

Philip R. Behrends ◽

Lucia F. Jacobs

Keyword(s):

Predation Risk ◽

Kangaroo Rats ◽

Dipodomys Merriami ◽

Differential Predation

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Food caching and differential cache pilferage: a field study of coexistence of sympatric kangaroo rats and pocket mice

Oecologia ◽

10.1007/s004420100686 ◽

2001 ◽

Vol 128 (4) ◽

pp. 577-584 ◽

Cited By ~ 54

Author(s):

Lisa A. Leaver ◽

Martin Daly

Keyword(s):

Field Study ◽

Kangaroo Rats ◽

Food Caching

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Sexually differentiated effects of radio transmitters on predation risk and behaviour in kangaroo rats Dipodomys merriami

Canadian Journal of Zoology ◽

10.1139/z92-252 ◽

1992 ◽

Vol 70 (9) ◽

pp. 1851-1855 ◽

Cited By ~ 18

Author(s):

Martin Daly ◽

Margo I. Wilson ◽

Philip R. Behrends ◽

Lucia F. Jacobs

Keyword(s):

Mortality Rate ◽

Predation Risk ◽

Sex Difference ◽

Behavioural Response ◽

Kangaroo Rats ◽

Dipodomys Merriami ◽

Radio Transmitters ◽

Differentiated Effects ◽

Merriam's Kangaroo Rats

In a 12-year study involving 191 radio-tracked Merriam's kangaroo rats and 337 subcutaneous radio implantations, females were killed by predators at a rate of 0.0054 per radio-bearing night and males at a rate of 0.0116. Both the mortality rate and the sex difference therein declined over the course of several nights after radio implantation. Females reduced their excursions from the day burrow for the first few nights after radio implantation, whereas males exhibited little if any such inhibition of movement. This sexually differentiated behavioural response to the transmitters is a likely source of the sexually differentiated mortality patterns.

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Seminar and Field Study

Kappa Delta Pi Record ◽

10.1080/00228958.1966.10516624 ◽

1966 ◽

Vol 2 (4) ◽

pp. 146-146

Keyword(s):

Field Study

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Investigating the Unified Motive Scales

European Journal of Psychological Assessment ◽

10.1027/1015-5759/a000571 ◽

2020 ◽

pp. 1-5

Author(s):

Martin Bettschart ◽

Marcel Herrmann ◽

Benjamin M. Wolf ◽

Veronika Brandstätter

Keyword(s):

Field Study ◽

Predictive Validity ◽

Selection Process ◽

Police Department ◽

Longitudinal Field ◽

Explicit Motives ◽

Achievement Motive

Abstract. Explicit motives are well-studied in the field of personality and motivation psychology. However, the statistical overlap of different explicit motive measures is only moderate. As a consequence, the Unified Motive Scales (UMS; Schönbrodt & Gerstenberg, 2012 ) were developed to improve the measurement of explicit motives. The present longitudinal field study examined the predictive validity of the UMS achievement motive subscale. Applicants of a police department ( n = 168, Mage = 25.11, 53 females and 115 males) completed the UMS and their performance in the selection process was assessed. As expected, UMS achievement predicted success in the selection process. The findings provide first evidence for the predictive validity of UMS achievement in an applied setting.

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Employees’ Critical Thinking, Leaders’ Inspirational Motivation, and Voice Behavior

Journal of Personnel Psychology ◽

10.1027/1866-5888/a000193 ◽

2018 ◽

Vol 17 (1) ◽

pp. 33-41 ◽

Cited By ~ 4

Author(s):

Jing Jiang ◽

Ang Gao ◽

Baiyin Yang

Keyword(s):

Critical Thinking ◽

Field Study ◽

Voice Behavior ◽

Research And Practice ◽

Inspirational Motivation ◽

Positive Effect

Abstract. This study uses implicit voice theory to examine the influence of employees’ critical thinking and leaders’ inspirational motivation on employees’ voice behavior via voice efficacy. The results of a pretest of 302 employees using critical thinking questionnaires and a field study of 273 dyads of supervisors and their subordinates revealed that both employees’ critical thinking and leaders’ inspirational motivation had a positive effect on employees’ voice and that voice efficacy mediates the relationships among employees’ critical thinking, leaders’ inspirational motivation, and employees’ voice. Implications for research and practice are discussed.

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