Navigation Links
Green poison-dart frog varies mating call to suit situation
Date:11/11/2013

In the eyes of a female poison-dart frog, a red male isn't much brighter than a green one. This does not however mean that the mating behavior of the green and red variants of the same species of frog is exactly the same. A study in Springer's journal Behavioral Ecology and Sociobiology, led by Beatriz Willink of the Universidad de Costa Rica in Costa Rica, sheds light on these findings.

The bright colors of poison-dart frogs serve not only to attract potential mates, but also to warn possible predators such as birds that these amphibians are poisonous. Different color variants within the same species occur, such as in the granular poison frog (Oophaga granulifera) of the southwestern lowlands of Costa Rica, where yellow and green color morphs have evolved from red ancestors.

Willink and her colleagues wanted to test if the green variants of the granular poison frog were more or less conspicuous to potential mates and predators than red ones of the same species. Therefore, they measured how the skin of the frogs contrasted with their natural background. This was done because dorsal brightness is known to influence female preferences in at least one poison frog species. The calling activity of 12 red and 10 green male frogs was also noted to determine if green males adjust their display behavior according to the availability of potential mates.

The results show that the green frogs, despite being less visible in some cases, may appear as bright as red frogs to members of their own species - but not to birds - when they are viewed on dark backgrounds.

Green frogs therefore seem to adjust their sexual behavior accordingly: They can deliver relatively conspicuous signals to females while being less conspicuous to potential predators. The researchers found that green males called less frequently than red males when advertising to distant females. However, their calling activity dramatically increased when a female was near and they became as vocal as red males. In the right context, when mating opportunity is certain, green males appear to trade-off the risk of predation for the mate-securing benefits of bold behavior.

"Our results support the notion that populations of phenotypically or observably different divergent species may use different solutions to the trade-off between natural and sexual selection, by adjusting the place and time of displays to risks and opportunities," says Willink. "In poison frogs this may have contributed to the dramatic variation in color pattern conspicuousness observed across species."


'/>"/>

Contact: Renate Bayaz
renate.bayaz@springer.com
49-622-148-78531
Springer
Source:Eurekalert  

Related biology news :

1. Companies close to reusing the greenhouse gas carbon dioxide
2. MIT Portugal is a partner of 2 projects distinguished by the Green Project Awards
3. As world sets new development goals, Malaysia calls for poverty relief within green agenda
4. Green flame moths: Scientists discover 2 new Limacodidae species from China and Taiwan
5. Green algae move to the beat
6. Team uses forest waste to develop cheaper, greener supercapacitors
7. Walgreens Mike Ellis Named First President of National Association of Specialty Pharmacy (NASP)
8. Turfgrass tested in shallow green roof substrates
9. QUT develops software to reduce greenhouse gases
10. Green photon beams more agile than optical tweezers
11. A greener, more sustainable source of ingredients for widely used plastics
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Green poison-dart frog varies mating call to suit situation
(Date:2/13/2017)... SAN FRANCISCO , Feb. 13, 2017 /PRNewswire/ ... a centralized platform that is designed to enhance ... the latest release in the RSA Fraud & ... to enable organizations to leverage additional insights from ... anti-fraud tools to better protect their customers from ...
(Date:2/8/2017)... NEW YORK , Feb. 8, 2017 /PRNewswire/ ... an individual,s voice to match it against a ... voice such as pitch, cadence, and tone are ... systems require minimal hardware installation, as most PCs ... remotely for different transactions. Voice recognition biometrics are ...
(Date:2/8/2017)... 7, 2017 Report Highlights The ... from $8.3 billion in 2016 at a compound annual ... Report Includes - An overview of the global ... with data from 2015 and 2016, and projections of ... of the market on the basis of product type, ...
Breaking Biology News(10 mins):
(Date:2/24/2017)... Feb. 24, 2017 China Cord Blood Corporation (NYSE: ... leading provider of cord blood collection, laboratory testing, hematopoietic ... announced its unaudited financial results for the third quarter ... December 31, 2016. Third Quarter of Fiscal ... quarter of fiscal 2017 increased by 18.6% to RMB200.9 ...
(Date:2/24/2017)... DIEGO , Feb. 24, 2017  OncoSec Medical ... cancer immunotherapies, will host a Key Opinion Leader event ... as an oral and poster presentation at the upcoming ... plan. The KOL event will be held in-person and ... PM EST / 9:00 AM PST at the Lotte ...
(Date:2/23/2017)... TORONTO , Feb. 23, 2017 /PRNewswire/ - The ... Institute for Cancer Research (OICR) are pleased to report ... Series A financing, with Johnson & Johnson Innovation – ... investors include venture groups HealthCap, TPG Biotechnology Partners, and ... ...
(Date:2/23/2017)... 2017  Imanis Life Sciences announced today the ... vaccinia viruses for virotherapy research. These viruses are ... proprietary, vaccinia virus-based technology platform for research use. ... a partnership with Genelux to offer researchers, for ... use in research," said Dr. Kah Whye ...
Breaking Biology Technology: