Navigation Links
Hormone-mimicking chemicals cause inter-species mating
Date:7/10/2012

Hormone-mimicking chemicals released into rivers have been found to impact the mating choices of fish, a new study has revealed. The controversial chemical BPA, which emits oestrogen-like properties, was found to alter an individual's appearance and behavior, leading to inter-species breeding. The study, published in Evolutionary Applications, reveals the threat to biodiversity when the boundaries between species are blurred.

The research, led by Dr Jessica Ward from the University of Minnesota, focused on the impact of Bisphenol A (BPA) on Blacktail Shiner (Cyprinella venusta) and Red Shiner (Cyprinella lutrensis) fish which are found in rivers across the United States. BPA is an organic compound used in the manufacture of polycarbonate and other plastics. It is currently banned from baby bottles and childrens' cups in 11 U.S. states.

"Chemicals from household products and pharmaceuticals frequently end up in rivers and BPA is known to be present in aquatic ecosystems across the United States," said Ward. "Until now studies have primarily focused on the impact to individual fish, but our study demonstrates the impact of BPA on a population level."

The team collected individuals of both species from two streams in the state of Georgia. The species were kept separated for 14 days in tanks, some of which contained BPA. On the 15th day behavioral trials were undertaken as individuals from different tanks were introduced to each other.

The scientists monitored any physiological or signalling differences the individuals displayed, such as colour, as well as any behavioral differences during courtship, such as mate choice.

BPA disrupts an individual's endocrine system, which controls the release of hormones. This impacts behavior and appearance, which in turn can lead an individual to mistake a newly introduced species as a potential mate.

This process poses long-term ecological consequences, especially in areas threatened by the introduction of invasive species. BPA and other hormone-mimicking chemicals can escalate the loss of native biodiversity by breaking down species barriers and promoting the invader.

"Our research shows how the presence of these manmade chemicals leads to a greater likelihood of hybridization between species," concluded Ward. "This can have severe ecological and evolutionary consequences, including the potential for the decline of our native species."


'/>"/>
Contact: Ben Norman
sciencenewsroom@wiley.com
44-012-437-70375
Wiley
Source:Eurekalert

Related biology news :

1. Production of chemicals without petroleum
2. Effect of chronic exposure to chemicals used as weapons, pesticides under study
3. Zebrafish provide insights into causes and treatment of human diseases
4. Scientists discover an epigenetic cause of osteoarthritis
5. UCLA study looks at why heart attacks cause so much more damage in late pregnancy
6. Flu immunity is affected by how many viruses actually cause the infection
7. Gene mutations cause massive brain asymmetry
8. Double the pain: RUB biologists find the cause of pain in the treatment of fair skin cancer
9. Glycogen accumulation in neurons causes brain damage and shortens the lives of flies and mice
10. Yeast cell reaction to Zoloft suggests alternative cause, drug target for depression
11. Changes in brains blood flow could cause brain freeze
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/16/2017)... CeBIT 2017 - Against identity fraud with DERMALOG solutions "Made in Germany ... ... in one project, multi-biometric solutions provide a crucial contribution against identity fraud. (PRNewsFoto/Dermalog Identification Systems) ... Used combined in one project, multi-biometric solutions provide a crucial ... ...
(Date:3/7/2017)... Brandwatch , the leading social intelligence company, today announces that it ... insights to support its reporting, help direct future campaigns, and share ... charity will be using Brandwatch Analytics social listening and analytics technology ... the topics and issues that are a priority for its supporters. ... "Until recently we,ve ...
(Date:3/2/2017)... LONDON , March 2, 2017 Summary ... require to better understand Merck KGaA and its partnering ... report: https://www.reportbuyer.com/product/3605601/ Description The Partnering Deals ... into the partnering activity of one of the world,s ... reports are prepared upon purchase to ensure inclusion of ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... 2017 Kineta, Inc., a biotechnology company ... in immuno-oncology, today announced the discovery and characterization ... that activate interferon response factor 3 (IRF3) via ... tumor regression in a murine colon carcinoma mouse ... complete tumor regression to initial drug treatment were ...
(Date:3/23/2017)... ... March 23, 2017 , ... Advanced Polymer Monitoring Technologies (APMT), ... Sigmund “Sig” Floyd as Vice President ? Global Business Development. Dr. Floyd will ... “Dr. Floyd’s career has spanned 30 years in the chemicals and equipment industries. ...
(Date:3/22/2017)... 2017 Good Start Genetics, a leading family ... 130 million covered lives mark through its most recent ... Texas . With newly signed contracts nationally and ... strong payor acceptance based on the quality of its ... counseling, its industry-leading customer care and support and its ...
(Date:3/22/2017)... , March 22, 2017 /PRNewswire/ - FACIT announced ... "Company" or "Propellon"), a start-up created by FACIT ... therapeutics. FACIT,s investment, combined with non-dilutive capital, achieves ... The seed funding enables Propellon to accelerate the ... Company for financing and/or entering a strategic partnership ...
Breaking Biology Technology: