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:
TAG: Species Species

(Date:3/31/2015)... , March 31, 2015  Elephant Talk Communications Corp. ... global provider of Software Defined Network Architecture (ET Software ... total revenue of approximately $20.4 million for the year ... $19.5 million for the year ended December 31, 2013. ... the Company had completed its multi-year transition away from ...
(Date:3/31/2015)... NEW YORK , March 31, 2015   ... announced the launch of the Post-Surgical Pain Management TRACKER, ... data products tracking usage trends in the medical device ... monthly access to data including treatment volumes, market share, ... manage the pain associated with joint surgery. ...
(Date:3/30/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/lc9bnl/global_gesture ... Gesture Recognition Market in Automotive Sector 2014-2018" report ... Global Gesture Recognition market in Automotive Sector to grow ... Gesture recognition is the ability of a ... an individual. Gesture recognition technology can be 2D-based or ...
Breaking Biology News(10 mins):Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6Guidepoint Launches Post-Surgical Pain Management TRACKER 2Guidepoint Launches Post-Surgical Pain Management TRACKER 3Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2
(Date:3/31/2015)... Diasome Pharmaceuticals, Inc. ( http://www.diasome.com ) has ... United States patent has recently been allowed for the ... Entitled “Lipid Construct for Delivery of Insulin to a ... to the use of Diasome’s proprietary Hepatocyte Directed Vesicles ... more effectively reach the liver’s metabolic cells, called hepatocytes. ...
(Date:3/30/2015)... NC (PRWEB) March 30, 2015 ... are pleased to announce the formation of VaxCorps, ... research centers specializing in the conduct of vaccine ... VaxCorps clinical sites have successfully conducted over ... experience in seasonal and pandemic influenza as well ...
(Date:3/30/2015)... March 30, 2015  NuGene International, Inc. ("NuGene") ... NuGene BioPharma, Inc. has added another internationally recognized ... Guan is an internationally recognized researcher in bio-inspired ... education at Peking University, China ... the University of North Carolina, Chapel Hill. Following ...
(Date:3/30/2015)... March 30, 2015 CASI Pharmaceuticals, Inc. (Nasdaq: ... acquisition, development and commercialization of innovative therapeutics addressing cancer ... with a commercial focus on China ... Administration (CFDA) has approved the Company,s application to conduct ... cell carcinoma (OCCC) patients for its proprietary drug candidate ...
Breaking Biology Technology:Diasome Pharmaceuticals, Inc. Announces Notice of Allowance from US PTO for Liver Targeting System for Insulin 2PMG Research announces formation of VaxCorps with two industry-leading vaccine site networks 2UCI Professor Zhibin Guan Joins NuGene Advisory Board 2UCI Professor Zhibin Guan Joins NuGene Advisory Board 3CASI Pharmaceuticals Receives Approval From CFDA For Phase 2 Clinical Trial In China With ENMD-2076 For Ovarian Clear Cell Carcinoma 2CASI Pharmaceuticals Receives Approval From CFDA For Phase 2 Clinical Trial In China With ENMD-2076 For Ovarian Clear Cell Carcinoma 3CASI Pharmaceuticals Receives Approval From CFDA For Phase 2 Clinical Trial In China With ENMD-2076 For Ovarian Clear Cell Carcinoma 4CASI Pharmaceuticals Receives Approval From CFDA For Phase 2 Clinical Trial In China With ENMD-2076 For Ovarian Clear Cell Carcinoma 5
Cached News: