Navigation Links
Video study shows which fish clean up coral reefs, showing importance of biodiversity
Date:2/13/2013

turbance.

To determine which fish were most important information potentially useful for protecting them Hay and Georgia Tech graduate student Douglas Rasher moved samples of seven species of seaweed into healthy reef systems that had large populations of fish.

They set up three video cameras to watch the reef areas, then left the area to allow the fish to feed. They repeated the experiment over a period of five days in three different marine protected areas located off the Fiji Islands. In all, Rasher watched more than 45 hours of video to carefully record which species of fish ate which species of seaweed.

"The patterns were remarkably consistent among the reefs in terms of which fish were responsible for removing the seaweed," said Rasher. "Because different seaweeds use different defense strategies to deter herbivores from eating them, a particular mix of fish each adapted to a particular type of seaweed is needed to keep seaweeds off the reef."

Among the most important were two species of unicornfish, which removed numerous types of brown algae. A species of parrotfish consumed red seaweeds, while a rabbitfish ate a type of green seaweed that is particularly toxic to coral. Those four fish species were responsible for 97 percent of the bites taken from all the seaweeds.

"It's not enough to have herbivorous fish on the reef," said Hay, who holds the Harry and Linda Teasley Chair in Environmental Biology at Georgia Tech. "We need to have the right mix of herbivores."

While just four fish species consumed the large seaweeds, Rasher observed a different set of species involved in what he termed "maintenance" the removal of small algal growths before they have a chance to grow.

"Through our videos, we were able to observe both groups in action," he said. "There was not only little overlap in which fishes ate the large seaweeds, but there was also little overlap between fishes that comprised the
'/>"/>

Contact: John Toon
jtoon@gatech.edu
404-894-6986
Georgia Institute of Technology
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Get off my lawn: Song sparrows escalate territorial threats - with video
2. New American Chemical Society video highlights 5 of chocolates sweet benefits
3. Graduate student video on sequestration wins prize
4. 60th anniversary of NSF Grad Research Fellowship Program; UM fellow Staatermans video recognized
5. Medbox, Inc. Releases Demo Video and Collateral Media Concerning How Their Systems Will Be Used in Massachusetts Medical Marijuana Dispensaries
6. Feature package of Congo Basin forest photos, stories & videos
7. High-speed video and artificial flowers shed light on mysteries of hummingbird-pollinated flowers
8. Video-article shows how to purify magnetic bacteria
9. Can videogaming benefit young people with autism spectrum disorder?
10. Video-gaming fish play out the advantages of groups
11. Chemistry on Mars video with Curiosity Rover from the American Chemical Society
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Video study shows which fish clean up coral reefs, showing importance of biodiversity
(Date:4/18/2014)... contraceptive pills in Peru found that 28 percent ... quality or falsified. Many pills released the active ... ingredient. One batch had no active ingredient at ... researchers at the Georgia Institute of Technology developed ... assess suspected counterfeit drugs and then characterize their ...
(Date:4/18/2014)... to the story of how barnyard chickens came to be, ... journal Proceedings of the National Academy of Sciences . ... 200-2300 years ago in Europe, researchers report that just a ... different from the chickens we know today. , The results ... domestic chickens -- such as their yellowish skin -- only ...
(Date:4/17/2014)... 17 In the most densely forested and most ... two centuries of human needs, values and practices. Disturbances ... forests for agriculture and development, have set the stage ... Forest Service study reports. , The report Five ... management needs in the Northern United States ...
Breaking Biology News(10 mins):Counterfeit contraceptives found in South America 2Counterfeit contraceptives found in South America 3Ancient DNA offers clues to how barnyard chickens came to be 2Five anthropogenic factors that will radically alter northern forests in 50 years 2Five anthropogenic factors that will radically alter northern forests in 50 years 3
... estrogen receptors are more difficult to treat than ... Meeting 2013 demonstrates an investigational drug, Paragazole, that ... and that increases the sensitivity of these cells ... do is use triple-negative breast cancer models to ...
... identified four genes newly associated with severe childhood obesity. ... variations in severely obese children. The team found ... help to maintain protein receptors known to be involved ... targets for the development of new drugs against obesity. ...
... biologist at the Florida State University College of Medicine ... closer to understanding how life first emerged on Earth ... team produced data supporting the idea that 10 amino ... years ago were capable of forming foldable proteins in ...
Cached Biology News:Finding genes for childhood obesity 2Researcher offers clues on the origins of life 2Researcher offers clues on the origins of life 3
(Date:1/15/2014)... (PRWEB) January 15, 2014 AudioNotch is ... new therapy for the treatment of tinnitus. Patients listen ... frequency, and over a period of weeks to months, their ... Therapy in two forms: Notched Music and Notched White Noise. ...
(Date:1/14/2014)... , Jan. 14, 2014  3D Communications, a leading provider of strategic ... business, and media events in the United States ... associate Virginia Cox , JD, is returning to the firm,s ... Cox re-joins 3D after more than two years of service ...
(Date:1/14/2014)... iLab Solutions, the leader in core facility management software, today ... In this role, Michelle will work with current and potential ... development of iLab products. Her main goal will be to ... scientific community by offering the most advanced, user-friendly, and high-impact ...
(Date:1/14/2014)... January 13, 2014 Bob Hainsey, a ... than 20 years in the industry, has joined ... Hainsey will serve as the society’s Science and Technology ... join SPIE as our Technology Strategist, further strengthening the ...
Breaking Biology Technology:Former FDA Associate Commissioner Returns To 3D Communications 2iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2Photonics R&D Leader Bob Hainsey Joins SPIE Technical Staff 2
... -- After announcing last April a method for ... cylinders only a few atoms thick, a Duke ... process to create exclusively semiconducting versions of these ... way for manufacturing reliable electronic nanocircuits at the ...
... , ... Englewood, CO (PRWEB) January 21, 2009 -- ... (OTJ), has announced new solutions for human resource and recruitment professionals ... geographically localized markets. , , , , ,OTJ currently powers online ...
... in Diabetes Drug TherapyHARTFORD, Conn., Jan. 21 ... of certain genes in vascular and energy pathways ... retention) in patients taking the thiazolidinedione (TZD) drugs ... from Joslin Diabetes Center Affiliate at The Hospital ...
Cached Biology Technology:Semiconducting nanotubes produced in quantity at Duke 2Semiconducting nanotubes produced in quantity at Duke 3onTargetjobs Offers Employers New Recruitment Solutions to Reach Local Career Candidates 2Cardiovascular Side Effects of Pioglitazone and Rosiglitazone Linked to Vascular and Energy Pathways by Genomas Clinical Study 2
...
Contains L-glutamine...
...
... ZMD.358. Immunogen: Synthetic peptide ... of human mouse and rat ... human and mouse LRP5 proteins. ... controls: mouse LRP5-pSEC-tag-transfected 293T cells ...
Biology Products: