Recommended Conferences

2nd International Conference on Clinical Psychiatry

Miami, USA

Neuroscience Psychiatry

Dubai, UAE

Psychology and Mental Health

Chicago, USA
Related Subjects
 

Behavioral reduction of infection risk

Author(s): Kiesecker JM, Skelly DK, Beard KH, Preisser E

Abstract

Evolutionary biologists have long postulated that there should be fitness advantages to animals that are able to recognize and avoid conspecifics infected with contact-transmitted disease. This avoidance hypothesis is in direct conflict with much of epidemiological theory, which is founded on the assumptions that the likelihood of infection is equal among members of a population and constant over space. The inconsistency between epidemiological theory and the avoidance hypothesis has received relatively little attention because, to date, there has been no evidence that animals can recognize and reduce infection risk from conspecifics. We investigated the effects of Candida humicola, a pathogen that reduces growth rates and can cause death of tadpoles, on associations between infected and uninfected individuals. Here we demonstrate that bullfrog (Rana catesbeiana) tadpoles avoid infected conspecifics because proximity influences infection. This avoidance behavior is stimulated by chemical cues from infected individuals and thus does not require direct contact between individuals. Such facultative modulations of disease infection risk may have critical consequences for the population dynamics of disease organisms and their impact on host populations.

 

Similar Articles

The secret power of beauty

Author(s): Armstrong J

Social pressures in informal groups: A study of a housing community

Author(s): Festinger L, Schachter S, Back K

The acquaintance process

Author(s): Newcomb TM

The portrayal of overweight and obese persons in commercial television

Author(s): Greenberg BS, Eastin M, Hofshire L, Lachlan K, Brownell KD

Facial diversity and infant preferences for attractive faces

Author(s): Langlois JH, Ritter JM, Roggman LA, Vaughn LS

Infant preferences for attractive faces: Rudiments of a stereotype? Dev Psychol 23: 363-369

Author(s): Langlois JH, Roggman LA, Casey RJ, Ritter JM, Rieser-Danner LA, et al.

The behavioral immune system (and why it matters)

Author(s): Schaller M, Park JH

Origins of major human infectious diseases

Author(s): Wolfe ND, Dunavan CP, Diamond J

Facial disfigurement is treated like an infectious disease

Author(s): Ryan S, Oaten M, Stevenson RJ, Case TI

Perceived health contributes to the attractiveness of facial symmetry, averageness and sexual dimorphism

Author(s): Rhodes G, Yoshikawa S, Palermo R, Simmons LW, Peters M, et al.

Red, rank and romance in women viewing men

Author(s): Elliot AJ, Niesta Kayser D, Greitemeyer T, Gramzow M, Lichtenfeld S, et al.

Red and romantic behavior in men viewing women

Author(s): Niesta Kayser D, Elliot AJ, Feltman R

Pathogen prevalence and human mate preferences

Author(s): Gangestad SW, Buss DM