Navigation Links
Predators vs. alien: European shrimps win predatory battles with an American invader
Date:10/19/2013

A shrimp from America has been invading Europe's rivers and lakes for several decades, but something seems to be preventing this colonist from becoming numerous and problematic, like so many other invaders - such as the Californian grey squirrel and American crayfish. Could the resident European shrimps have something to do with this?

Jaimie Dick and his colleagues mapped the occurrence of the interloper and found it only existed where native shrimps were absent or rare. When native shrimps were common, the American shrimp simply could not establish and it disappeared. The results have been published in the open access journal NeoBiota.

'We came up with the idea that the native shrimps might be eating the exotic species to the point of local extinction, and hence its patchy occurrence' said Prof. Dick. 'So we staged fights between two of our native shrimps, Gammarus pulex and Gammarus duebeni, and they both proved very effective at killing and eating the invader Crangonyx pseudogracilis. Remarkably, one of the native shrimps. G. pulex, which almost never allows the invader to establish, was the better of the two predators in our experiments. The other native shrimp, G. duebeni, sometimes co-exists with the invader because it is a less effective predator. Thus, our laboratory experiments helped us understand a Europe-wide pattern of failed invasion'.

Invasion ecologists use the term 'biotic resistance' to describe how native species might fight back and drive invaders extinct. But unravelling how this occurs is not an easy task. By comparing the numbers of invaders killed over a range of their densities, the research showed that the native shrimps can kill most invaders to the point their populations crash, and hence the invasion is halted.

'Understanding how native species resist exotic species could help us pr
'/>"/>

Contact: Jaimie Dick
j.dick@qub.ac.uk
Pensoft Publishers
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Dinosaur fossil: Even specialized predators didnt turn down free meals
2. Loss of predators in Northern Hemisphere affecting ecosystem health
3. T cells hunt parasites like animal predators seek prey, a Penn Vet-Penn Physics study reveals
4. Predators have outsized influence over habitats
5. Top predators key to extinctions as planet warms
6. Copper making salmon prone to predators
7. Bright life on the ocean bed: Predators may even color code food
8. City birds adapt to their new predators
9. Bering Sea study finds prey density more important to predators than biomass
10. Baby sharks stay still to avoid being detected by predators
11. Dietary flexibility may have helped some large predators survive after last ice age
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Predators vs. alien: European shrimps win predatory battles with an American invader
(Date:9/2/2014)... through a U.S. suburb , Observations and mapping ... the hours and days after the August 24 earthquake ... earthquake caused so much damage in the region, according ... by the American Geophysical Union. , ... Places to Direct Our Curiosity , Selecting where ...
(Date:9/2/2014)... The Field Museum will present the prestigious Parker/Gentry Award ... commitment to biodiversity conservation awareness. The Parker/Gentry Award is ... individual, team or organization whose efforts have had a ... and whose actions can serve as a model to ... an environmental science and conservation news website that draws ...
(Date:9/2/2014)... In Bavaria, the Tithonian Konservat-Lagersttte of lithographic limestone ... discoveries of emblematic fossils from that area (for ... have found fossil insects in the French equivalent ... new species representing the oldest known water treader. ... equivalent Bavarian outcrops, fewer fossils have been obtained ...
Breaking Biology News(10 mins):This week From AGU: California earthquake, future Mars rovers, models underestimate ozone 2Exceptionally well preserved insect fossils from the Rhône Valley 2
... marine animals find their way back to their birthplace to ... has mystified scientists for more than a century. But marine ... think they might finally have unraveled the secret. At ... read the magnetic field of their home area and "imprint" ...
... from the California Institute of Technology (Caltech) have created ... the first time, the connection between the configuration of ... More precisely, they showed that the muscular band--which ... a helix--is actually a sort of twisting highway along ...
... (ST. LOUIS): The Missouri Botanical Garden Press (MBG ... species of vascular plants for the Southern Cone region, ... Plantas Vasculares del Cono Sur (Catalogue of the Plants ... the plants of Argentina, southern Brazil, Chile, Paraguay and ...
Cached Biology News:No place like home: New theory for how salmon, sea turtles find their birthplace 2No place like home: New theory for how salmon, sea turtles find their birthplace 3Caltech scientists show function of helical band in heart 2Missouri Botanical Garden publishes first catalogue of plants of the Southern Cone 2
(Date:9/2/2014)... 02, 2014 Myriant Corporation, a ... of a distribution agreement with Azelis Group, a ... Myriant’s bio-succinic acid in the Nordics, Benelux, France, ... customers in the industrial and base chemicals markets. ... offers a far-reaching chemical portfolio with extensive distribution ...
(Date:9/2/2014)... Md. , Sept. 2, 2014  Synthetic ... novel anti-infective biologic and drug candidates targeting specific ... today positive results from its final preclinical toxicology ... Administration (FDA) guidance, this bridging study was required ... candidate designed to prevent the devastating effects of ...
(Date:9/2/2014)... (PRWEB) September 02, 2014 The inventors ... cure for chronic tinnitus are seeking support for development ... the Indiegogo platform ( http://igg.me/at/tinaway ), was launched on ... a therapeutic ‘mHealth’ app and is based on ten ... a team of biomedical and software engineers, Dr. Ian ...
(Date:8/31/2014)... Available spectra is similar for ... and cultivation of a wide range of plants. ... with proven patented and pending wide spectrum technology. ... in critical applications in contrast to growth spectra ... customers have a large variety of differently sized ...
Breaking Biology Technology:Myriant and Azelis Sign European Distribution Agreement for Bio-Succinic Acid 2Synthetic Biologics to Initiate Clinical Trials of SYN-004 in 4Q 2014 to Prevent Potentially Deadly C. difficile Infections 2Synthetic Biologics to Initiate Clinical Trials of SYN-004 in 4Q 2014 to Prevent Potentially Deadly C. difficile Infections 3Synthetic Biologics to Initiate Clinical Trials of SYN-004 in 4Q 2014 to Prevent Potentially Deadly C. difficile Infections 4Synthetic Biologics to Initiate Clinical Trials of SYN-004 in 4Q 2014 to Prevent Potentially Deadly C. difficile Infections 5tinAway Pty. Ltd. launch a crowdfunding campaign to fund a clinical trial of tinAway, a new potential cure for chronic tinnitus 2tinAway Pty. Ltd. launch a crowdfunding campaign to fund a clinical trial of tinAway, a new potential cure for chronic tinnitus 3tinAway Pty. Ltd. launch a crowdfunding campaign to fund a clinical trial of tinAway, a new potential cure for chronic tinnitus 4tinAway Pty. Ltd. launch a crowdfunding campaign to fund a clinical trial of tinAway, a new potential cure for chronic tinnitus 5
... expansion of PROVENT(R) Sleep Apnea Therapy in Limited ... Inc. a privately-held, medical device company, focused on ... the appointment of John McCutcheon as President and ... company also announced that current CEO Jeffrey Nugent ...
... Group (OTC Bulletin Board: SNBP) is pleased to ... Director of Marketing.Ms. Tan joins Sinobiopharma from Organon ... China-based Unit Marketing Director for Organon, which was ... Tan held senior marketing management roles at China ...
... Kiadis,Pharma reported preliminary clinical data on ATIR(TM) ... Data was presented by the,company,s principal investigator ... Symposium at the Annual European Bone Marrow ... March 30, 2009. Only the 6,highest ranked ...
Cached Biology Technology:Ventus Medical Appoints John McCutcheon as President and CEO 2Sinobiopharma, Inc. Appoints New Director of Marketing 2Kiadis Pharma Reports ATIR(TM) Clinical Data, Further Supporting its Potential in Mismatched Bone Marrow Transplantations 2
... label transfer is fast emerging as a ... and confirmation. Until now, only amino groups ... label transfer reagents such as our Sulfo-SBED. ... Mts-Atf-LC-Biotin, are exciting additions to the protein ...
... siRNA --- a cocktail of 3 siRNAs ... interestis our most popular product. The siTrio ... knockdown of your target gene when used ... transfection and confirmation of optimal transfection with ...
... transfer is fast emerging as a powerful ... confirmation. Until now, only amino groups have ... transfer reagents such as our Sulfo-SBED. Sulfhydryl-reactive ... are exciting additions to the protein interaction ...
... siTrio siRNA --- a cocktail of 3 ... of interestis our most popular product. The ... 75% knockdown of your target gene when ... for transfection and confirmation of optimal transfection ...
Biology Products: