HOME >> BIOLOGY >> NEWS
Tiny bugs in mealybugs have smaller bugs inside them

Like tiny Russian dolls, the mealybugs that infest your houseplants carry bacteria inside their cells that are themselves infected with another type of bacteria. A new study by researchers at the University of California, Davis, shows that instead of spreading from bug to bug, the second set of bacteria infected the first several times in the past and are now being passed along and evolving with them.

The knowledge could be useful for working out how the insect species are related to each other, aiding pest control efforts.

Scientists had previously known that mealybugs carry two different types of bacteria. In 2001, researchers at Utah State University led by Carol von Dohlen showed that one type, called the secondary or S-endosymbiont, was actually inside the other, called the primary or P-endosymbiont. The P-endosymbionts were themselves inside specialized cells in the mealybug's body.

The P-endosymbionts seem to benefit mealybugs by making essential amino acids not found in their diet of plant sap, said UC Davis microbiology professor Paul Baumann.

"The insect has domesticated a bacterium for its own use," Baumann said. So far, no one knows what benefits flow to the insect or the P-endosymbiont from the S-endosymbionts, he said.

Baumann, with postgraduate researcher My Lo Thao and entomology professor Penny Gullan studied DNA sequences of P-and S-endosymbionts from several different species of mealybugs to see how they were related to each other.

The P-endosymbionts are all descended from an infection of an ancestor bug 150 to 250 million years ago, Baumann said. The S-endosymbionts had infected P-endosymbionts at least four times. Since then, the bacteria have been passed down through generations of bugs and split into new species at the same time as their hosts.

Because the evolutionary trees of the bugs, their bacteria and their bacteria's bacteria are so similar, the bacterial DNA sequences can b
'"/>

Contact: Andy Fell
ahfell@ucdavis.edu
530-752-4533
University of California - Davis
27-Aug-2002


Page: 1 2

Related biology news :

1. Why some animals have smaller eyes: Lifestyle matters
2. Brain size in premature infants significantly smaller than full-term babies
3. Peering inside the body, with a new spinliterally
4. Microbes found in Mayan ruins may deteriorate stone from inside out
5. Scripps scientists look deep inside sharks and their high-performance swimming system
6. IUB scientists to study the ecology of infectious disease -- inside ticks
7. 3-D imaging inside living organism, using quantum dots
8. Automated imaging of brain tissue, high-quality glimpses inside arteries
9. Heart disease among some Japanese may be due to sequencing variation inside a gene
10. Peering inside a blood vessel
11. Buffalo neuroimaging researchers studying multiple sclerosis from inside human brain

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


(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:
Cached News: