Navigation Links
Lionfish characteristics make them more 'terminator' than predator
Date:8/14/2014

nge of population levels of the fairy basslet. Ingeman found that when prey fish were present at a low population density, the rate of mortality with lionfish present was four times higher than that caused by native predators alone, such as medium-sized groupers or trumpet fish.

The findings are of some importance, researchers said, because fairy basslet live in small local populations, which are most vulnerable to local extinction. It also shows that the mechanisms that ordinarily regulate population size can be altered.

"Reef fish usually hide in rocks and crevices for protection, and with high populations, there is a scramble for shelter," Ingeman said. "Native predators take advantage of this situation by mostly eating when and where prey are abundant. As prey population levels decline, it takes a lot more energy to catch fish, so the predators often move on to other areas."

Because of this process that scientists call "density-dependent" predation, populations of native prey fish tend to shrink when they get too large, grow when they get too small, and are rarely ever wiped out completely.

Lionfish, however, have such advantages as an invasive species that they apparently feel no need to move on for better or easier hunting. They may not be recognized as a predator by other fish, leading to high mortality even when shelter is abundant. Lionfish are also very efficient hunters, are well defended themselves by poisonous spines, and can thrive at deep levels in the ocean. They tolerate a wide range of habitats and water conditions, reproduce rapidly most of the year, eat many different species of native fish and may overeat rare species.

Still unclear, Ingeman said, is whether evolutionary pressures may allow native fish in the Atlantic Ocean to adapt new behaviors that provide better defense against lionfish.

"There's a strong pressure here for natural selection to come into play eventually," Ingeman
'/>"/>

Contact: Kurt Ingeman
ingemank@science.oregonstate.edu
541-908-0805
Oregon State University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Pythons, lionfish and now willow invade Floridas waterways
2. Caribbeans native predators unable to stop aggressive lionfish population growth
3. War on lionfish shows first promise of success
4. Female mice exposed to BPA by mothers show unexpected characteristics
5. Juniper essential oil characteristics determined
6. Unique new dataset CLIMBER: Climatic niche characteristics of the butterflies in Europe
7. Surface characteristics influence cellular growth on semiconductor material
8. Characteristics of lung cancers arising in germline EGFR T790M mutation carriers
9. UNC researchers find unsuspected characteristics of new CF drugs, offering potential paths to more effective therapies
10. Dinosaur fossil: Even specialized predators didnt turn down free meals
11. Loss of predators in Northern Hemisphere affecting ecosystem health
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Lionfish characteristics make them more 'terminator' than predator
(Date:3/24/2015)... March 24, 2015   Crossmatch ™, a ... announced that its U.are.U ® 4500 Fingerprint ... Goorin Bros . to achieve PCI compliance for ... access to the POS terminal, protecting the retailer ... data breaches. With one-third of ...
(Date:3/23/2015)... Conn. , Mar. 23, 2015 NXT-ID, Inc. (NASDAQ: ... company focused on the growing mobile commerce market, announces its ... new advertising campaign on CNBC television starting March 30 th ... will commence airing in New York ... Officer said: "We are excited about our new ad campaign ...
(Date:3/20/2015)... , Mar. 19, 2015 Research and Markets ... "Iris Biometrics - Global Strategic Business Report" report ... markets for Iris Biometrics in US$ Thousands. The report provides ... , Japan , Europe ... , and Latin America . ...
Breaking Biology News(10 mins):Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 3Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 2Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 3Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 4Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 5
... 2009) -- A husband and wife team of American paleontologists has ... ago during the early Cretaceous of central Montana. The new ... of the Canadian Journal of Earth Sciences . Ankylosaurs are ... a plate-like armour with two sets of sharp spikes on each ...
... decades, climate scientists have worked to identify and measure key ... affect Earth,s climate. And they,ve been aided by ever more ... each type of pollutant more reliable. Yet the ... it -- continues to serve up surprises. The most recent? ...
... KATHMANDU, October 30 - China received praise here today from ... its neighbors to end tiger trade and bring back wild ... opposed to tiger trade from any source, praised comments by ... the Kathmandu Global Tiger Workshop, who pledged to replace the ...
Cached Biology News:New dinosaur species from Montana 2Interactions with aerosols boost warming potential of some gases 2Interactions with aerosols boost warming potential of some gases 3Interactions with aerosols boost warming potential of some gases 4Asia's biggest 'tiger' unviels promise for wild tigers 2
(Date:4/16/2015)... 2015 Avelas Biosciences, an in vivo ... announced today that it has initiated a Phase 1b ... women with primary, non-recurrent breast cancer undergoing surgery. In ... addition of Steven Chen , M.D., as vice ... dose escalation study will enroll up to 39 women ...
(Date:4/16/2015)... Switzerland , April 16, 2015 /PRNewswire/ ... Debiopharm Group ™ , a Swiss-based global biopharmaceutical ... medical needs as well as companion diagnostics, ... investigational compounds Debio 1143 (SMAC mimetic) and Debio 1347/CH5183284 ... the 2015 Annual meeting of the American Association for Cancer Research ...
(Date:4/16/2015)... April 16, 2015 Fairleigh Dickinson ... V. Gulfo to become the Executive Director of ... FDU announced the kick-off of the Initiative for ... by Dr. Gulfo, under the Rothman Institute of ... Business) and in collaboration with FDU’s School of ...
(Date:4/16/2015)... 2015 Dana-Farber Cancer Institute and ... Resolution Bioscience, Inc. today announced the successful completion ... blood-based, clinic ready, Next Generation Sequencing (NGS) assay ... is the first to demonstrate the successful sequencing ... in blinded plasma samples and highlights the ability ...
Breaking Biology Technology:Avelas Biosciences Initiates Phase 1b Trial of AVB-620 in Breast Cancer Patients 2Avelas Biosciences Initiates Phase 1b Trial of AVB-620 in Breast Cancer Patients 3Debiopharm International SA Announces Results of 2 Key Oncology Programs at 2015 AACR Conference 2Debiopharm International SA Announces Results of 2 Key Oncology Programs at 2015 AACR Conference 3Dr. Joseph V. Gulfo Named Executive Director of Fairleigh Dickinson University’s Rothman Institute to Spearhead New Initiative for Patient-Centered Innovation (iPCI) 2Dr. Joseph V. Gulfo Named Executive Director of Fairleigh Dickinson University’s Rothman Institute to Spearhead New Initiative for Patient-Centered Innovation (iPCI) 3Resolution Bioscience announces successful collaboration on a novel, non-invasive, targeted NGS test for lung cancer 2Resolution Bioscience announces successful collaboration on a novel, non-invasive, targeted NGS test for lung cancer 3
... Immunotec,looks to the beginning of its twelfth year ... C.H. (Chuck) Roberts announces,his retirement from his role ... will continue his involvement with the corporation, both ... and as Co-founder, in a variety,of public relations ...
... 26 InterMune, Inc.,(Nasdaq: ITMN ) today ... shares of common stock at a price to ... of common stock, representing the exercise,by the underwriters ... the,offering. The net proceeds to the company of ...
... Sept. 26 Advanced Bio-Technologies,Inc (ABT) is pleased to ... purchased by HealthEdge Investment Partners of Tampa,FL. (http://www.healthedgepartners.com ... "This is a new stage,in the exciting development of ... marketing in the USA, build the necessary infrastructure for ...
Cached Biology Technology:Immunotec Inc. announces retirement of President & CEO C.H. (Chuck) Roberts 2InterMune Announces Closing of Public Offering of Common Stock 2Advanced Bio-Technologies Inc Announces Acquisition by HealthEdge Investment Partners, Tampa FL 2
Recommended for use as a cell culture substratum at 0.1-0.2 mg/cm 2 or 5-10 μl/cm 2 . Optimal concentration depends on cell type as well as the application or research objectives. Type B...
... Yellow crystalline solid. PROTECT FROM LIGHT. Useful in ... required. Purity: ≥98% by TLC. Soluble in ... preparation of a 10 mM stock in DMSO is ... to H 2 O with rapid mixing (e.g. 10 ...
... IgM binds poorly to Protein A and, ... existed for one- step IgM purification. Standard methods ... or they are not effective for removing all ... Pierce has developed ...
... 3′-(α-Amino- p- methoxyhydrocinnamamido)-3′-deoxy-N,N-dimethyladenosine, 2HCl ... FROM MOISTURE. Protein synthesis inhibitor. Inhibits ... nascent polypeptide chains. Induces DNA fragmentation ... leukemia cells. Purity: ≥98% by ...
Biology Products: