HOME >> BIOLOGY >> NEWS
Species vs. Species

Because loggerhead shrikes on San Clemente Island are critically endangered, the foxes that prey on their nestlings should be controlled. Right? Wrong. The problem is that the foxes are also at-risk. A new analysis shows that instead of pitting the shrike against the fox, both species could have been protected with an ecosystem-wide conservation plan.

"This endangered species conflict might have been avoided through a more balanced ecosystem approach," say Gary Roemer of New Mexico State University in Las Cruces and Robert Wayne of the University of California at Los Angeles in the October issue of Conservation Biology. Roemer is also the World Conservation Union (IUCN) island fox coordinator.

The San Clemente loggerhead shrike is one of the most endangered birds in the world, with about 50 in the wild in 2003. Until this year, the shrike's federal recovery program included controlling all its predators even the San Clemente island fox, which is listed as threatened in California. The fox has declined by about 60% in the last decade and was down to about 400 in the year 2000.

In 1999, foxes were killed to protect the shrike. After that, foxes in shrike nesting areas were inadvertently caught in traps set for feral cats or held in captivity during the breeding season. Either way, these foxes were not breeding and so were not bolstering the population. In 2000, more than a tenth of the foxes were held in captivity during the breeding season. In 2003, fox control efforts finally stopped.

Besides having hurt the foxes, the shrike recovery program does not do enough to help the birds. While the feral goats and pigs that degraded the island's habitat have been eradicated, there has been little habitat restoration. Consequently, there are not enough shrubs, which provide foraging perches for the shrikes, and too many non-native grasses, which are taller and denser than native grasses and so presumably make it harder for the shrikes to hunt
'"/>

Contact: Gary Roemer
groemer@nmsu.edu
505-646-3394
Society for Conservation Biology
23-Sep-2003


Page: 1 2

Related biology news :

1. Snakehead in your inbox? Welcome to the nonindigenous Aquatic Species Alert System
2. Endangered Species Recovery Plans Face Comprehensive Scientific Review
3. New Species Of Human Ancestor
4. USGS Scientists To Speak On Rare Plants And Invasive Species At Santa Barbara Symposium
5. CU Research Team Unravels Mystery Of Larceny Among Tropical Ant Species
6. NSF-Funded Researcher Plucks Four Unknown Fish Species From Antarctic Waters
7. Alien Species Cost U.S. $123 Billion A Year
8. Exotic Species, Migratory Birds, Sea Level Rise, Wetlands, And Contaminants...USGS Scientists Discuss Innovative Chesapeake Bay Restoration Studies
9. Saving Endangered Species Becomes Part Of Ag Centers Animal Reproduction Projects
10. Study Of Origin Of Species Enters The Molecular Age
11. Mouse Study Trumpets New Way To Preserve Species

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/5/2019)... (PRWEB) , ... March 05, 2019 , ... Join this ... how a metadata-driven approach will help data analysts and bioinformaticians focus on data analysis ... unify data that can come from different source systems. Some sources of data include:, ...
(Date:2/27/2019)... ... ... Circulomics is launching the Short Read Eliminator Kit to perform ... , This kit enhances long-read sequencing read lengths by using size selective precipitation ... and recovered with high efficiency. Short DNA up to 25 kb in length are ...
(Date:2/22/2019)... ... 2019 , ... Clean label food is not just another passing trend in ... It is quite common to spot consumers running their index finger across the back ... this label scrutiny. , More than ever, meat and poultry producers are working ...
Breaking Biology News(10 mins):
(Date:3/14/2019)... ... 14, 2019 , ... ON NOVEMBER 27, 2018, Nova Oculus ... Machine Canada Inc., had been given approval to begin a clinical patient trial ... (AMD). , The previous month, the medical devices bureau of Health Canada had ...
(Date:3/14/2019)... ... March 14, 2019 , ... ... standard solution for preclinical research organizations. It is a low code, GDPR/21 ... systems and facilities, innovative technology-driven automated data capture and seamless data and ...
(Date:3/11/2019)... ... March 11, 2019 , ... In this live webinar, the featured speakers will ... efficiency and experience. Participants will learn how to use the information they have from ... the simple or complex randomization scheme is properly designed and set up to ensure ...
(Date:3/9/2019)... ... March 08, 2019 , ... ... announced the release of their Best Online Master's in Biotechnology Programs for ... curriculum quality, program flexibility, affordability, and graduate outcomes. , In addition to ...
Breaking Biology Technology:
Cached News: