Navigation Links
UI biology professor finds 'Goldilocks' effect in snail populations
Date:12/3/2013

r, we showed that population density had a major influence on individual growth rate and embryo production, effects that were often apparent even when comparing treatments that differed in population density by only one individual."

For purposes of the study, the snail populations were grown, fed, and maintained in laboratory conditions in order to eliminate the effects of other variables.

Neiman and Zachar also detected a so-called "Goldilocks" effect, in which too few or too many snails living together could adversely affect reproduction. This possibility is especially intriguing in light of another 2013 study by Neiman's group, which showed that the reproductive output of these snails can be controlled by simply exposing the snails to water conditioned by other snails, suggesting that reproduction in these invasive snails is affected by waterborne, snail-produced chemicals.

"While individual growth rate generally decreased as population density increased, we detected a hump-shaped relationship between embryo production and density, with females from intermediate-density treatments producing the most embryos and females from low- and high-density treatments producing the fewest embryos," Neiman says.

"These results indicate that there are profound and complex relationships between population density, growth rate, and embryo production in at least two lineages of this important model system, with potential implications for the study of invasive populations, research on the maintenance of sex, and approaches used in ecotoxicology," she says.

In 2011, Neiman, together with UI colleagues John M. Logsdon Jr., UI associate professor of biology, and collaborator Jeffrey Boore of the University of California, Berkeley, received a four-year, $876,752 grant from the National Science Foundation. That research, which uses both sexual and asexually reproducing representatives of the snail species, tests ideas of why sexual reproduct
'/>"/>

Contact: Gary Galluzzo
gary-galluzzo@uiowa.edu
319-384-0009
University of Iowa
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Elsevier announces the launch of open access journal: Current Plant Biology
2. First-ever survey of Do-It-Yourself Biology community challenges myths
3. Wilson Center awarded European Union grant for synthetic biology work
4. American Society for Cell Biology 2013 meeting
5. Better batteries through biology?
6. CSHL launches bioRxiv, a freely accessible, citable preprint server for biology
7. An intersection of math and biology: Clams and snails inspire robotic diggers and crawlers
8. Will the Nagoya Protocol impact your synthetic biology research?
9. Molecular biology: Designer of protein factories exposed
10. 2 online science video pioneers combine to form new iBiology.org
11. Frontiers launches a new open-access journal in Cell and Developmental Biology
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
UI biology professor finds 'Goldilocks' effect in snail populations
(Date:8/22/2014)... and clinical research and technological advances, the fight ... spanning multiple fronts. , Work happening in a ... new and more selective therapies for cancer. Researchers ... enzyme overexpressed in certain cancersand they have tested ... Chemistry professor Christopher Cairo and his team synthesized ...
(Date:8/22/2014)... of captive black rhino reproduction in Europe highlights ... breeding programmes. , Researchers from Chester Zoo, The ... carried out a six-year study which encompassed 90% ... Katie Edwards led the research as part of ... says: "Although some black rhinoceros breed well in ...
(Date:8/22/2014)... is a multifunctional enzyme that localizes ... neuroprotective and cholesterol-synthesizing activities. DHCR24 overexpression ... amyloid β deposition. Dr. Xiuli Lu ... China constructed two recombinant adenoviruses (Ad-rSYN1-DHCR24-myc ... specifically in neuronal cells. They also ...
Breaking Biology News(10 mins):New enzyme targets for selective cancer therapies 2New enzyme targets for selective cancer therapies 3Hormone analysis helps identify horny rhinos 2
... increases resulting from climate change in the Southwest will likely ... in 60 to 90 years, according to a new study ... research team used models of future climate, an analysis of ... and the fossil record to project the future distribution of ...
... on Osteoporosis & Osteoarthritis by investigators from the UK ... fractures in five major European countries totals 31 billion ... of the economic burden is shown to be related ... the fracture, while pharmacological prevention and treatment management constitutes ...
... Researchers with the Los Angeles County Department of Public ... pathogen, carbapenem-resistant Klebsiella pneumoniae (CRKP) among the patient population ... care hospitals across the county. These findings are ... to East Coast facilities and communities. These findings will ...
Cached Biology News:Uncertain future for Joshua trees projected with climate change 2Drug-resistant pathogen found in large numbers in LA County 2
(Date:8/22/2014)... Surrey have discovered how the receptors responsible for contractions ... The new study, published today in The FASEB ... turn regulates the cycle of all cells in the ... local biological clock and its control are weakened in ... bladder physiology and ageing. , While currently ...
(Date:8/22/2014)... (PRWEB) August 22, 2014 Ophthalmic ... the interesting and challenging endeavors as the anatomy, ... impervious properties to the foreign substances. Ocular drug ... of self medication and minimal use of needles; ... weight drugs and provides specific targeting within the ...
(Date:8/22/2014)... August 22, 2014 The AMA is ... its members in Alaska that Alaska Governor Sean Parnell ... 15, further defining public use of Unmanned Aircraft Systems ... Force. House Bill 255states that it is, “An Act ... captured by an unmanned aircraft system.” It defines State ...
(Date:8/21/2014)... 2014  BioSpecifics Technologies Corp. (NASDAQ: ... class collagenase-based products marketed as XIAFLEX ® ... and XIAPEX ® in the EU, today ... double-blind Phase 2a study of CCH for the ... The results showed that all three doses of ...
Breaking Biology Technology:Treatment for overactive bladder and irritable bowel syndrome advanced through pioneering research 2Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 2Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 3Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 4State of Alaska Signs Unmanned Aircraft Systems Bill 2BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 2BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 3BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 4BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 5
... DIEGO, Sept. 9 Orexigen((R) )Therapeutics, Inc. (Nasdaq: OREX ), a ... will be speaking at two upcoming investor conferences. The details are as ... Stanley Global Healthcare Unplugged Conference, Date: September 15, 2009, ... Grand Hyatt Hotel, New York, Speaker: Michael Narachi, President ...
... TAI,AN, China, Sept. ... Bulletin Board: CBPO) ("China Biologic," or the ... in the People,s,Republic of China ("PRC"), operating ... Products Co. Ltd. ("Taibang") and,Chongqing Dalin Biologic ...
... , , THE WOODLANDS, ... LXRX ), a biopharmaceutical company focused on discovering and developing ... Sands, M.D., Ph.D. , Lexicon,s president and chief executive officer, will ... Hyatt hotel in New York, New York on Tuesday, September 15, 2009 ...
Cached Biology Technology:China Biologic Products Appoints Director of Research and Development 2China Biologic Products Appoints Director of Research and Development 3Lexicon Pharmaceuticals to Present at the Morgan Stanley Global Healthcare Unplugged Conference 2
Mouse Amphiregulin MAb (Clone 206220)...
Anti-Digoxigenin-AP, Fab fragments; from sheep...
The antibody recognizes the peptide sequence ESESQGPK (aa 441-448) of human class III beta-tubulin specific for neurones....
Unique enzyme blend containing Taq and Pwo DNA Polymerase and another thermostable enzyme. The Expand 20 kbPLUS PCR System also includes an optimized reaction buffer, MgCl2 solution, and a human cont...
Biology Products: