HOME >> BIOLOGY >> NEWS
Crickets on Hawaiian Island develop silent wings in response to parasitic attack

RIVERSIDE, Calif. -- In only a few generations, the male cricket on Kauai, one of the Hawaiian Islands, underwent a mutation a sudden heritable change in its genetic material that rendered it incapable of using song, its sexual signal, to attract female crickets, according to a new study by UC Riverside evolutionary biologists.

In addition, the researchers found that although the new male crickets' wings lack the file and scraper apparatus required for producing sound, the males are able to mate successfully with females, thus ensuring evolutionary success. The males accomplish this with a change in behavior, suggesting that behavior can help what may seem like a harmful mutation spread.

The research team, led by Marlene Zuk, a professor of biology, found that greater than 90 percent of male field crickets (Teleogryllus oceanicus) on Kauai shifted in less than 20 generations from having normal wings to mutated "flat wings" that inhibit the crickets from calling. Like all mutations, the wing alteration arose spontaneously, but it likely spread, the researchers conclude, because it offered protection from a deadly parasitic fly (Ormia ochracea), which uses the cricket's song to locate crickets as hosts.

Upon finding a male cricket, the fly deposits larvae onto it; these then burrow into the cricket, develop inside, and subsequently kill the cricket when they emerge from its body. Of three Hawaiian Islands (Oahu, the Big Island of Hawaii, and Kauai) where the cricket and fly co-occur, Kauai, where the rapid spread of this wing mutation in male crickets was observed, has the highest prevalence of the parasitic fly.

Study results appear in Biology Letters, a scientific journal of the Royal Society in the United Kingdom, publishing short papers from across the biological sciences.

"With each visit we made to Kauai since 1991, we observed fewer crickets," said

Contact: Iqbal Pittalwala
iqbal@ucr.edu
951-827-6050
University of California - Riverside
22-Sep-2006


Page: 1 2 3

Related biology news :

1. New species and new records of marine species discovered in NW Hawaiian Islands
2. First Biodiversity Census of coral reef ecosystems in the NW Hawaiian Islands
3. Hawaiian soils reveal clues to cultural history
4. Finding hidden invaders in a Hawaiian rain forest
5. World Wildlife Fund warns against iron dumping experiment near the Galapagos Islands
6. UF scientists discover new genus of frogmouth bird in Solomon Islands
7. Islands spark accelerated evolution
8. Rhode Island physician honored nationally for establishing first HIV menopause clinic
9. Pacific Islands paradise protected
10. Eruption update: Island in British Overseas Territory is growing in size
11. Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

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


(Date:4/13/2017)... MONICA, Calif. , April 13, 2017 ... New York will feature emerging and evolving ... Summits. Both Innovation Summits will run alongside the expo ... of speaker sessions, panels and demonstrations focused on trending ... coast,s largest advanced design and manufacturing event will take ...
(Date:4/11/2017)... BEACH GARDENS, Fla. , April 11, 2017 ... identity management and secure authentication solutions, today announced ... contract by Intelligence Advanced Research Projects Activity (IARPA) ... for IARPA,s Thor program. "Innovation has ... onset and IARPA,s Thor program will allow us ...
(Date:4/11/2017)... N.Y. , April 11, 2017 ... fingerprints, but researchers at the New York University ... College of Engineering have found that partial similarities ... security systems used in mobile phones and other ... thought. The vulnerability lies in the ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... Proscia Inc ., a ... Webinar titled, “Pathology is going digital. Is your lab ready?” with Dr. Nicolas ... practices and how Proscia improves lab economics and realizes an increase in diagnostic ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... implantation and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... and maternal age to IVF success. , After comparing the results from the ...
(Date:10/10/2017)... ... October 10, 2017 , ... For the ... won a US2020 STEM Mentoring Award. Representatives of the FirstHand program travelled to ... Experience from US2020. , US2020’s mission is to change the trajectory of STEM ...
(Date:10/10/2017)... CALIFORNIA (PRWEB) , ... October 10, 2017 , ... ... technological innovation and business process optimization firm for the life sciences and healthcare ... BoxWorks conference in San Francisco. , The presentation, “Automating GxP Validation for ...
Breaking Biology Technology:
Cached News: