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:3/28/2017)... , March 28, 2017 The ... Hardware (Camera, Monitors, Servers, Storage Devices), Software (Video Analytics, ... Region - Global Forecast to 2022", published by MarketsandMarkets, ... 2016 and is projected to reach USD 75.64 Billion ... and 2022. The base year considered for the study ...
(Date:3/24/2017)... 24, 2017 The Controller General of Immigration from ... Abdulla Algeen have received the prestigious international IAIR Award for the ... Continue Reading ... ... Controller Abdulla Algeen (small picture on the right) have received the IAIR ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based ... to 2022", published by MarketsandMarkets, the market is expected to be worth USD ... 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... and LAGUNA HILLS, Calif. , Oct. ... Cancer Research, London (ICR) and University ... SKY92, SkylineDx,s prognostic tool to risk-stratify patients with multiple myeloma ... MUK nine . The University of Leeds ... partly funded by Myeloma UK, and ICR will perform the ...
(Date:10/10/2017)... ... 2017 , ... San Diego-based team building and cooking events company, Lajollacooks4u, has ... The bold new look is part of a transformation to increase awareness, appeal to ... period. , It will also expand its service offering from its signature gourmet cooking ...
(Date:10/10/2017)... 10, 2017 International research firm Parks Associates announced ... at the TMA 2017 Annual Meeting , October 11 in ... residential home security market and how smart safety and security products impact ... Parks Associates: Smart Home ... "The residential security market has ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
Breaking Biology Technology: