HOME >> BIOLOGY >> NEWS
Penguin chicks exposed to human visitors experience spike in stress hormone

and 60 minutes after capture, newly hatched chicks regularly visited by humans had levels more than three times higher than undisturbed chicks. At 40 to 50 days old, the levels were nearly the same for chicks at 30 and 60 minutes after capture, and for those near fledging the levels were almost identical between visited and undisturbed chicks.

But even when the hormone levels evened out between the two groups as the chicks got older, their behavior was different. Nearly fledged chicks in tourist areas did not flee until people were within two feet, while those in the areas not visited by tourists sought safety when people were still 30 feet away.

The research will be published in the October issue of Conservation Biology, a journal of the Society of Conservation Biology. Co-authors are Dee Boersma and John Wingfield, UW biology professors and Walker's doctoral advisers. The work was funded by the Wildlife Conservation Society, the American Ornithologists' Union and the American Museum of Natural History.

There is no evidence of short-term negative effects, such as different growth rates or weight differences at fledging, caused by distinct differences in corticosterone levels between newly hatched chicks in tourist and non-tourist areas of the reserve, Walker said. But it is unclear what later effects the elevated stress hormones might have.

"We don't know yet what it means it might mean nothing, but it will take more research to be sure," he said. "We are seeing evidence in other species, including humans, that some detrimental physiological changes that happen to adults can only be traced back to stressful situations or elevated corticosterone levels when they were young."


'"/>

Contact: Vince Stricherz
vinces@u.washington.edu
206-543-2580
University of Washington
27-Sep-2005


Page: 1 2

Related biology news :

1. Penguins march into new park
2. Video explains what science learns from avian stars of Happy Feet and March of the Penguins
3. Penguins okay with human visitors for now
4. Penguins waddle but they dont fall down, UH researchers say
5. Mother birds give a nutritional leg up to chicks with unattractive fathers
6. Picking the best parent for your chicks
7. New data reveal pregnancies exposed to accutane despite risk management program
8. Lead-scrubbing drug may also improve muscle function in lead-exposed children
9. An infectious agent of deception, exposed through proteomics
10. Embryos exposed in 3-D
11. Nearly a quarter of children are especially susceptible to respiratory illness if they are exposed to second-hand smoke

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


(Date:8/5/2020)... , ... August 05, 2020 , ... Regenative Labs has ... new innovations, CoreText™ and ProText™, making them the first Wharton’s jelly allografts to be ... a syringe. The company’s solutions are the first Wharton’s jelly allograft product to be ...
(Date:7/31/2020)... , ... July 30, 2020 , ... ... digital therapeutics product portfolio with a near term focus on Type 2 diabetes ... pharma commercialization experience across multiple therapeutic areas and classes. As Chief Commercial Officer, ...
(Date:7/18/2020)... ... July 17, 2020 , ... Commercial launch readiness is ... ability to discover a COVID cure or vaccine, the global economic downturn will only ... pressure is not going away and capturing full value from every product launch is ...
Breaking Biology News(10 mins):
(Date:7/18/2020)... , ... July 16, 2020 , ... After research model ... completion of a great surgery is only the beginning of a successful study, while ... community. , Join Brad Gien, Global Head of Surgery from Envigo in ...
(Date:7/10/2020)... ... 2020 , ... Bode Technology, a leading provider ... through its COVID-19 testing service, Bode-CARES . Bode-CARES combines high-volume clinical testing ... provides a turnkey solution that includes a comprehensive collection and virus-management program for ...
(Date:7/7/2020)... ... July 06, 2020 , ... R3 International is now offering stem cell therapy ... stem cells. Depending on the patient's condition, treatment may be offered IV, intrathecal or ... some form of Alzheimers dementia, and the incidence continues to increase as individuals live ...
(Date:7/1/2020)... ... June 30, 2020 , ... ... announced that the launch of a new clinical diagnostics immuno-oncology service, ... tumor microenvironment (TME). , “Flagship’s TissueInsight is a service that aids pathologists, ...
Breaking Biology Technology:
Cached News: