Gone but not forgotten

A review published in the recent issue of Ethology suggests that the presence of multiple predators slows the loss of anti-predator abilities in isolated populations.

Many species find themselves isolated from predators with which they evolved. This can be natural, as on islands, or unnatural, as in zoos. In response to this isolation, many species lose the ability to respond appropriately to their predators. However, some species, despite many years of isolation, retain anti-predator behavior.

UCLA professor, Dan Blumstein, reviewed the literature and suggests that the key factor responsible for persistence, despite the loss of some predators, is that anti-predator behavior does not evolve independently. Most species have more than a single predator and we should expect co-adapted suites of anti-predator behavior. Thus, the loss of a single predator should have a limited effect on overall anti-predator abilities as long as other predators remain.

Evidence in support of this 'multi-predator hypothesis' comes from studies of wallabies, which retained anti-predator behavior for thousands of years following isolation from some predators, but rapidly lost anti-predator behavior when isolated from all predators.

The multi-predator hypothesis has important implications for conservation biology: taking animals from a predator-free location and putting them back into a predator rich area is more likely to fail than taking animals from an area with a sub-set of historically-important predators.


Contact: Dan Blumstein
Blackwell Publishing Ltd.

Page: 1

Related biology news :

1. The forgotten methane source

Post Your Comments:

(Date:9/17/2019)... ... September 17, 2019 , ... VISTAAR released ADVISORY Playbooks to ... as re-assurance / 2nd opinion to their internal strategies they formed for developing or ... going into new markets, or planning to change their product elements and want to ...
(Date:9/17/2019)... ... September 17, 2019 , ... Last week, Blackrock Microsystems, LLC, ... the Medical University of Warsaw, met at the Presidential Palace of the Republic ... neuroprosthetic system as part of an initiative called "Startups in the Palace – ...
(Date:9/17/2019)... ... September 17, 2019 , ... Dual-board certified ... of the Australia Society of Implant Dentistry (ASID) Accreditation Courses. His lecture, “Understanding ... the Surgical Aspects of Modern Implant Dentistry course. Dr. Kim’s expertise comes from ...
Breaking Biology News(10 mins):
(Date:8/23/2019)... ... August 22, 2019 , ... The EnozoPro® converts ordinary tap water ... germs and pathogens on hard surfaces including E. Coli, Salmonella, MRSA, Listeria and Legionella. ... For more information, visit the product page at rovingblue.com , ”At Enozo, our mission ...
(Date:8/14/2019)... ... August 13, 2019 , ... ... in vitro toxicology testing solutions, announced the appointment of Mark McLoughlin to the ... the Board. , Mark McLoughlin will lend his healthcare expertise and extensive background ...
(Date:8/7/2019)... ... , ... Locus Agricultural Solutions (Locus AG) reports record levels of carbon sequestered ... Rhizolizer ® , which is pulling up to 121% more carbon into the soil ... Results from the treatment of almonds, cherries, turf/sod, grapes and citrus across the U.S., ...
(Date:8/6/2019)... ... August 05, 2019 , ... Advanced Clinical, a ... a distinguished leader by PharmaVOICE magazine, earning him a prestigious spot on the ... July/August special issue. , As the executive vice president of business development and ...
Breaking Biology Technology:
Cached News: