Navigation Links
Which came first, the moth or the cactus?
Date:8/13/2007

HOUSTON, Aug. 13, 2007 It's not a good idea to put all your eggs in one basket unless you're a senita moth.

Found in the parched Sonoran desert of southern Arizona and northern Mexico, the senita moth depends on a single plant species -- the senita cactus -- both for its food and for a place to lay eggs. The senita cactus is equally dependent upon the moth, the only species that pollinates its flowers. Senita cacti and senita moths have a rare, mutually dependent relationship, one of only three known dependencies in which an insect actively pollinates flowers for the purpose of assuring a food resource for its offspring.

"Mutualistic relationships like this present a problem for ecological theory," said Rice University ecologist Nat Holland, who co-discovered the senita moth-senita cactus mutualism in 1995 and has studied it ever since.

The problem is that the moths lay their eggs inside the cacti's flowers immediately after pollination, and when the eggs hatch the moth larvae eat the fruit, destroying the flowers' chances to produce seeds. Historic theory predicts extreme ecological instability for this relationship; as moth populations increase, more flowers are destroyed, fewer new cacti appear, and the spiral continues until both species disappear.

Yet that hasn't happened, and Holland, assistant professor of ecology and evolutionary biology, spends several months each year observing moths and cacti in the Mexican desert to document why.

Holland, whose lab is just a few steps down the hall from his Houston office, jokes that his "real" lab is 1,500 miles away. He's studied senita at several locations in the Sonoran Desert, including the Organ Pipe Cactus National Monument in southern Arizona. But his primary site for more than a decade is a desolate, 30-acre patch of desert straddling three ranches near Bahia de Kino on the Gulf of California. Holland said he and his students sometimes go weeks without seeing ot
'/>"/>

Contact: Jade Boyd
jadeboyd@rice.edu
713-348-6778
Rice University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Identification of specific genes predicts which patients will respond to Hepatitis C treatment
2. Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals
3. Bacteria which sense the Earths magnetic field
4. Researchers discover which organs in Antarctic fish produce antifreeze
5. First-ever genomic test predicts which lung cancer patients need chemotherapy to live
6. Researchers discover key mechanism by which lethal viruses Ebola and Marburg cause disease
7. Newts which regrow their hearts
8. Reminding doctors which antibiotics to prescribe cuts C. difficile infection rates
9. Killing the messenger RNA -- But which one?
10. Scientists discover stage at which an embryonic cell is fated to become a stem cell
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2014)... the largest minority group in the United States, comprising ... are obese and are 1.2 times as likely to ... College of Nursing student researcher Lauren Gerchow, BSN, RN, ... contribute to this problem by compiling a systematic review ... Latina women recently published in Nursing Research . ...
(Date:7/31/2014)... study (HPV-023; NCT00518336) shows the sustained efficacy, ... virus (HPV) vaccine Cervarix. Women vaccinated with ... more than nine years, and vaccine efficacy ... is the longest follow-up report for a ... for the full paper. , HPV ...
(Date:7/31/2014)... team of scientists from Spain, France, and the ... that is the oldest definitive member of the ... amber. The discovery and description were made possible ... synchrotron imaging technique, which allows the detailed study ... new species is described in the journal ...
Breaking Biology News(10 mins):NYU research looks to combat US Latina immigrant obesity 2Sustained efficacy, immunogenicity, and safety for GlaxoSmithKline's HPV vaccine 2Sustained efficacy, immunogenicity, and safety for GlaxoSmithKline's HPV vaccine 3
... COLUMBUS , Ohio -- As sea levels rise, coastal communities ... water supplies than previously thought, according to a new study ... saltwater will intrude into fresh water aquifers, given the sea ... (IPCC). The IPCC has concluded that within the next 100 ...
... In a recent academic review, a University of Minnesota professor ... as opposed to specific nutrients, may be key to having ... practice in food industry and government, where marketers and regulators ... on specific vitamins and added supplements in food products, not ...
... produce lubricin, a thin film of protein found in ... friction in their joints, a new study led by ... friction and early wear in joints is a first; ... before. The finding, published in Arthritis & Rheumatism, sheds ...
Cached Biology News:Climate change could diminish drinking water more than expected 2Climate change could diminish drinking water more than expected 3Foods, not specific nutrients, may be key to good health 2First-ever study: lack of critical lubricant causes wear in joints 2
(Date:8/1/2014)... LA (PRWEB) August 01, 2014 Chantel Lee ... conduct research for 10 40-hour weeks with Dr. Juan Rodriguez, ... of diabetic retinopathy, a common diabetic eye disease caused by ... , "What Chantel and Eli accomplished is quite remarkable,” said ... only a concept when they started, and together carried it ...
(Date:8/1/2014)... As one of the 10 largest medical ... & Clinical Lab Expo is the place where breakthrough ... to the healthcare world. This year, many of the ... include the latest diagnostic technology in the field of ... biosensors have enabled the development of "labs-on-a-chip" that can ...
(Date:8/1/2014)... 1, 2014 Research and Markets ... Nucleotide Polymorphism (SNP) Genotyping and Analysis Market 2014-2018" ... http://photos.prnewswire.com/prnh/20130307/600769 Single Nucleotide Polymorphism (SNP) genotyping ... SNPs in the genome of various species. SNPs are ... and analysis technology can analyze thousands of SNPs and ...
(Date:8/1/2014)... August 01, 2014 Testing the ... to a better understanding embryonic development. How ... into structurally and functionally distinct tissues is important ... Prof. Todd McDevitt, Melissa Kinney, and Rabbia ... interact with biochemical cues to control many aspects ...
Breaking Biology Technology:Two Centenary College Students Tackle Diabetic Retinopathy Research 2Lab-on-a-Chip Technology to Be Featured at 2014 AACC Annual Meeting & Clinical Lab Expo 2Lab-on-a-Chip Technology to Be Featured at 2014 AACC Annual Meeting & Clinical Lab Expo 3Global Single Nucleotide Polymorphism (SNP) Genotyping and Analysis Market 2014-2018 2Study Links Biomechanics and Gene Expression in Stem Cells 2
... Oriental,Bioengineering, Inc. (NYSE: AOB ), a pharmaceutical ... and commercialization,of a broad range of prescription and ... the following statement regarding the earthquake in,China:, ... China,s earthquake and we,are thankful to report that ...
... EAST RUTHERFORD, N.J., May 15 Cambrex (NYSE:,CBM), a ... of,Directors appointed Steven M. Klosk, President and Chief Executive ... Directors effective May,14, 2008. James A. Mack, President and ... announced he will step down. The Company will,separate the ...
... PRINCETON, N.J., May 15 Derma Sciences, Inc.,(OTC ... results today for the first quarter ended March 31, ... the previous year, including sales,from the newly acquired First ... guidance, due primarily to higher than expected,integration costs associated ...
Cached Biology Technology:American Oriental Bioengineering Comments on Earthquake 2Cambrex Appoints Steven M. Klosk as President and CEO 2Derma Sciences Reports First Quarter 2008 Results 2Derma Sciences Reports First Quarter 2008 Results 3Derma Sciences Reports First Quarter 2008 Results 4Derma Sciences Reports First Quarter 2008 Results 5
...
Immunogen: Synthetic peptide (aa sequence is considered to be commercially sensitive) Storage: -20 C, Avoid Freeze/Thaw Cycles...
TRIzol Reagents are ready-to-use monophasic solutions of phenol and guanidine isothiocyanate suitable for isolating total RNA DNA and proteins (16)....
...
Biology Products: