HOME >> BIOLOGY >> NEWS
Emory study finds monarch health tied to migration

Monarch butterflies in eastern North America have one of the longest migrations of any species, with a survival-of-the-fittest trek that can take them thousands of miles from Canada to Central Mexico. A new Emory University study has found that these journeys may be the key to maintaining healthy monarch populations at a time when habitat loss and other environmental issues could curb the ability of the butterflies to make the trip.

Emory researchers discovered that monarch butterflies infected with a protozoan parasite flew slower, tired faster and had to expend more energy flying than healthy monarchs. These results, published in the March issue of Ecology Letters, may explain why parasite burdens are much lower in migratory monarch populations compared to year-round residents -- an effect that possibly occurs in other migratory species as well, explains Sonia Altizer, lead researcher of the study and an assistant professor of environmental studies at Emory.

"We know that several species of birds, insects and other animals undergo two-way migrations of several thousand miles or longer. These journeys can be thought of as animals essentially running a marathon every fall and spring. So if animals are infected with parasites, this would be like a distance runner trying to run a marathon with the flu. In this case, parasitized animals will drop out of the race, and across the whole population, prevalence of disease will decline," Altizer says.

However, monarch migration in eastern North America is threatened by several environment factors such as habitat loss at wintering sites, climate warming trends and an increase of tropical milkweed species in milder climates. These dynamics could ultimately cause large migratory populations to be replaced with smaller remnants that stay put and breed year-round, she says.

"The results of our study add one more reason to protect monarch migration east of the Rockies. If this migration collapses
'"/>

Contact: Beverly Cox Clark
beverly.clark@emory.edu
404-712-8780
Emory University Health Sciences Center
1-Mar-2005


Page: 1 2

Related biology news :

1. New genetic test developed at Emory advances detection and diagnosis of muscular dystrophy
2. Emory scientists develop new map of genetic variation in human genome
3. Hormones may affect how brain listens, Emory study finds
4. Emory scientists discover unique binding method for essential cellular protein ubiquitin
5. Blood conservation strategies take center stage at Emory University Hospital forum
6. NIH awards Georgia Tech/Emory $11.5 M for nano cardiology research
7. Emory scientist finds different paths lead to similar cognitive abilities
8. Emory scientists find new prostate cancer suppressor gene
9. Emory researchers find more evidence for childrens growth spurts, pain
10. Emory biochemist writes lead essay describing Nobel Prize research on ubiquitin protein
11. Emory study details dolphin brain evolution for the first time

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


(Date:4/13/2017)... April 13, 2017 According to a new market ... Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, ... Market is expected to grow from USD 14.30 Billion in 2017 to ... of 17.3%. ... MarketsandMarkets Logo ...
(Date:4/11/2017)... Research and Markets has announced the addition of the ... ... grow at a CAGR of 30.37% during the period 2017-2021. ... prepared based on an in-depth market analysis with inputs from industry ... over the coming years. The report also includes a discussion of ...
(Date:4/11/2017)... April 11, 2017 NXT-ID, Inc. (NASDAQ: ... company, announces the appointment of independent Directors Mr. Robin ... its Board of Directors, furthering the company,s corporate governance and ... Gino Pereira ... look forward to their guidance and benefiting from their considerable ...
Breaking Biology News(10 mins):
(Date:6/20/2017)... ... June 20, 2017 , ... National executive ... leader with extensive assay development and biomarker expertise, as VP of Scientific Affairs ... CRO specializing in bio-analytical assay development and sample testing services. The organization acts ...
(Date:6/20/2017)... , ... June 20, 2017 , ... ... discovery of antibody therapeutics from millions-diverse immune repertoires, announces launch of its new ... Diego, California. Dave Johnson, PhD, CEO of GigaGen, will present on Surge at ...
(Date:6/19/2017)... ... June 19, 2017 , ... ... development reported today that it is launching two new additions of its award-winning ... demonstrating new capabilities at the DIA 2017 Annual Meeting in Chicago, IL, June ...
(Date:6/19/2017)... ... 2017 , ... A colony of healthy honey bees is like a superorganism--individual ... and nectar containing nutrients necessary for growth and survival. Better nutrition gives the colony ... point to a decline in honey bee health. Sick and weakened bees diminish the ...
Breaking Biology Technology:
Cached News: