Navigation Links
Brain size determines whether fish hunters or slackers
Date:8/4/2010

Whether a fish likes to hunt down its food or wait for dinner to arrive is linked to the composition of its brain, a University of Guelph researcher has revealed.

Prof. Rob McLaughlin has discovered that foraging behaviour of brook trout is related to the size of a particular region in the fish's brain.

"We found that the fish that swim around in the open in search of food have larger telencephalons than the fish that sit along the shoreline and wait for food to swim by in the water column," said the integrative biology professor.

"This means there is a correlation between foraging behaviour and brain morphology."

The telencephalon is a brain region involved with fish movement and use of space.

"It's responsible for a fish's ability to swim around to different places and remember landmarks in the environment so they don't get lost."

In previous research, McLaughlin discovered that brook trout display two personality types: fish that are active foragers and appear to be risk takers, and those that are sedentary and apparently more timid.

"These are young fish that have been foraging for less than a month, and we are already seeing a difference in the propensity to take risks and move around. This made us wonder if these differences were significant biologically."

For the current research, which was recently published in the journal Behavioral Ecology and Sociobiology, McLaughlin and researcher Alexander Wilson collected these two types of fish from the Credit River near Toronto and measured the size of their telencephalon region.

They also measured the brain's olfactory bulb to ensure that the active foragers did not simply have larger brains overall than the sedentary fish.

"We found there was no significant difference in the size of the olfactory bulb between the two types of fish," he said. "We picked this part of the brain because trout are visual feeders, so th
'/>"/>

Contact: Prof. Robert McLaughlin
rlmclaug@uoguelph.ca
519-824-4120 x53620
University of Guelph
Source:Eurekalert

Page: 1 2

Related biology news :

1. Scripps research study shows infectious prions can arise spontaneously in normal brain tissue
2. Children with brain injuries have problems with story-telling
3. Irradiating stem cell niche doubles survival in brain cancer patients
4. Does the existing standard of care supply energy sources to brain tumor cells?
5. The brain of the fly -- a high-speed computer
6. Brain atrophy responsible for depression in people battling multiple sclerosis
7. A pacemaker for your brain
8. Virus explorers probe inner workings of the brain
9. Growing brain is particularly flexible
10. Tiny insect brains capable of huge feats
11. Helping the brains messengers get from A to B
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2014)... A first-of-its-kind study of bigeye tuna movements in the ... the Large Pelagics Research Center at the University of ... cover a wide geographical range with pronounced north-south movements ... favor a high-use area off Cape Hatteras southwest of ... a new approach to study one of the most ...
(Date:7/31/2014)... GAINESVILLE, Fla. --- By tracing nearly 3,000 genes ... moths, University of Florida scientists have created an ... to use large-scale, next-generation DNA sequencing. , ... more closely related to small moths than to ... how butterflies evolved. The study also found that ...
(Date:7/31/2014)... has long been known that biomass burning ... as a ritual , slash-and-burn agriculture and wildfires ... health. , But until the release of a ... Engineering Professor Mark Z. Jacobson, the degree of ... Jacobson,s research, detailed in a paper published July ...
Breaking Biology News(10 mins):Study of bigeye tuna in Northwest Atlantic uses new tracking methods 2Study of bigeye tuna in Northwest Atlantic uses new tracking methods 3UF study advances 'DNA revolution,' tells butterflies' evolutionary history 2UF study advances 'DNA revolution,' tells butterflies' evolutionary history 3Stanford professor finds that wildfires and other burns play bigger role in climate change 2Stanford professor finds that wildfires and other burns play bigger role in climate change 3Stanford professor finds that wildfires and other burns play bigger role in climate change 4
... headed by Prof. Johanna Ivaska (University of Turku and VTT ... of Turku and the National Institute for Health and Welfare) ... Published in a leading journal, the study concludes ... and of lung and prostate cancer cells. It is likely ...
... scientists have developed a new, integrated, ten-year science plan to ... role in it. Understanding the carbon cycle is central for ... builds on the first such plan, published in 1999, but ... as agents and managers of carbon cycling and climate change, ...
... COPENHAGEN (16 November 2011) In the lead up ... this month, an independent global commission of eminent scientists today ... how to achieve food security in the face of climate ... commissioners urged immediate, coordinated action toward transforming the food system ...
Cached Biology News:Scientists tackle the carbon conundrum 2Global commission charts pathway for achieving food security in face of climate change 2Global commission charts pathway for achieving food security in face of climate change 3Global commission charts pathway for achieving food security in face of climate change 4Global commission charts pathway for achieving food security in face of climate change 5Global commission charts pathway for achieving food security in face of climate change 6Global commission charts pathway for achieving food security in face of climate change 7
(Date:7/31/2014)... July 31, 2014 Rancho BioSciences ... integration of Omicsoft’s Array Suite with tranSMART . ... be able to send data in tranSMART to Array ... all versions of tranSMART including the new 1.2 release. ... visualization and storage for the analysis of high dimensional ...
(Date:7/31/2014)... (PRWEB) July 31, 2014 “Rapid ... automation across the U.S., increasing unemployment, depressing American ... It is a Catch 22—we need automated ... this means fewer jobs,” says economist and corporate ... Pollina Corporate Top 10 Pro-Business States for 2014, ...
(Date:7/31/2014)... The Kidney Cancer Association (KCA) has established a ... Kidney Cancer News. , Bill Bro, KCA CEO, says, ... by an international news organization. When we began using iReport ... This month’s program highlights news of an enzyme that is ... recent study. Kidney Cancer News also presents a report on ...
(Date:7/30/2014)... July 30, 2014 Regulus Therapeutics Inc ... leading the discovery and development of innovative medicines targeting ... and highlights for the quarter ended June 30, 2014 ... markets close. Regulus will host a ... at 5:00 pm Eastern Daylight Time to discuss its ...
Breaking Biology Technology:Rancho BioSciences, in Partnership with Omicsoft, have Integrated Array Suite with tranSMART 2Rancho BioSciences, in Partnership with Omicsoft, have Integrated Array Suite with tranSMART 3ITRA Global Affiliate’s Pollina Corporate Top 10 Pro-Business States Minimize the Impact of Automation on Middle Class and Unemployment 2ITRA Global Affiliate’s Pollina Corporate Top 10 Pro-Business States Minimize the Impact of Automation on Middle Class and Unemployment 3ITRA Global Affiliate’s Pollina Corporate Top 10 Pro-Business States Minimize the Impact of Automation on Middle Class and Unemployment 4Regulus Announces Timing for Second Quarter 2014 Financial Results Webcast and Conference Call 2Regulus Announces Timing for Second Quarter 2014 Financial Results Webcast and Conference Call 3
... Inc. (Nasdaq:,NUVA), a medical device company focused on developing ... today,details relating to its fourth quarter and full year ... 19, 2008, after,the close of the market., NuVasive ... 2008 at,5:30 p.m. ET / 2:30 p.m. PT to ...
... of Directors of US,Oncology Holdings, Inc. and its wholly ... "Company") announced that, effective,February 1, 2008, Dale Ross will ... and will continue as the Executive Chairman of the,Company. ... Company,s,President and CEO. The CEO transition is a planned ...
... investors to state, TOPEKA, Kan., Jan. 25 ... a "Come Home to Kansas" initiative that,focuses on ... Kansas. Partners in this project include the Kansas,Department ... Organization and the KTEC PIPELINE., This initiative ...
Cached Biology Technology:NuVasive Announces Webcast and Conference Call of Fourth Quarter and Full Year 2007 Results 2NuVasive Announces Webcast and Conference Call of Fourth Quarter and Full Year 2007 Results 3US Oncology Announces Realignment of Executive Team 2US Oncology Announces Realignment of Executive Team 3'Come Home to Kansas' Announced by KTEC 2
Rabbit polyclonal to XTP4 ( Abpromise for all tested applications). entrezGeneID: 84299 SwissProtID: Q9BRT3...
Chicken polyclonal to QPRT ( Abpromise for all tested applications). Antigen: Synthetic peptide, corresponding to Internal sequence amino acids 123-237 of Human QPRT Entrez Gene ID: 23475 ...
...
Antibody Diluent for IHC 125 ml...
Biology Products: