Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

New insights on how tempo… - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

New insights on how temporal variation in predation risk shapes prey behavior

Artikel i vetenskaplig tidskrift
Författare Andrew Sih
Robert Ziemba
Karin C. Harding
Publicerad i Trends in Ecology and Evolution
Volym 15
Sidor 3-4
ISSN 01695347
Publiceringsår 2000
Publicerad vid Zoologiska institutionen, ekologisk zoologi
Sidor 3-4
Språk en
Ämneskategorier Evolutionsbiologi, Ekologi, Zoologi

Sammanfattning

The fact that predators come and go, so that individual prey experience temporal variations in predation risk, is an almost unavoidable aspect of nature. Predation risk routinely varies seasonally1, across lunar cycles2 and diurnal cycles3, or on a moment-to-moment basis4. In spite of its near ubiquity in nature, until recently no theory has focused explicitly on the effects of temporal variation in risk on prey behavior. That is, existing theory has generally taken a static view – contrasting antipredator effort for prey facing constant high versus constant low predation risk. Now, however, a new model by Steven Lima and Peter Bednekoff5 has extended the ‘Risk Spreading Theorem’6, to show that the pattern of temporal variation in predation risk experienced by individual prey can be crucial for understanding patterns of antipredator effort. Their model has produced insights that are important for empiricists because, to date, experiments have not addressed these temporal effects, and because, perhaps more importantly, the model suggests that standard laboratory protocols might err systematically in estimating the importance of predation risk in nature.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?