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:6/29/2015)... DUBLIN , June 24, 2015 ... the addition of the "Latin America Biomedical Sensors ... to their offering. The Latin America Biomedical ... at a CAGR of 2.04% over the period 2014-2020 ... that are adaptable to the genetic formulation of each ...
(Date:6/25/2015)... 25, 2015 According to ... (Swipe & Area), Technology, Material (Optical Prism, Piezoelectric, ... Security & Others) & Geography - Global Forecast ... said market is expected to reach $14,500.07 Million ... Browse 76 market Tables and 109 ...
(Date:6/25/2015)... , June 25, 2015  TAKE Solutions Ltd., a ... by the United States Patent and Trademark Office (USPTO) ... process leverages TAKE Solutions, Clinical Accelerators to reduce the ... (when compared to standardization without the accelerators), thus reducing ... At the heart of the patented ...
Breaking Biology News(10 mins):Latin America Biomedical Sensors Market Report 2015-2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 4TAKE Solutions Awarded Patent By USPTO 2
... a plant in Erie County that has never been recorded ... with the aid of a Mercyhurst College professor on the ... is known to exist in northern U.S. states and in ... until this discovery. WPC scientists found a small population of ...
... Blacksburg, Va. Camille Harris of Ridgeland, Mississippi, a graduate ... awarded a National Institutes of Health (NIH) Graduate Research ... ecological impacts on LaCrosse Virus, a mosquito-borne disease that ... in severe cases. Harris, a wildlife veterinarian, is ...
... The National Science Foundation has awarded $431,200 to the ... to facilitate the purchase of a new highly-specialized imaging ... that will be a centerpiece of a new ... physicists Andrei Stanishevsky, Ph.D., and Yogesh Vohra, Ph.D., plan ...
Cached Biology News:Erie County home to plant never before recorded in Pa. 2NIH fellowship recipient to study disease ecology 2NSF funds state's first imaging system for UAB microscale research lab 2
(Date:7/1/2015)... (PRWEB) , ... July 01, 2015 , ... The next-generation ... several key market segments, including the molecular diagnostics industry. BCC Research reveals in its ... of NGS-based tests, lower test costs, and a growing need for better diagnostics as ...
(Date:7/1/2015)... ... July 01, 2015 , ... A newly launched business ... to lower the barriers to innovation in life sciences R&D. The Pistoia Alliance President’s ... cash prizes of US$15,000 and a period of expert mentorship from a senior industry ...
(Date:6/30/2015)... 2015 R-Japan Co.,Ltd. obtained the license of cell ... Medicine from the Ministry of Health, Labour and Welfare Kinki ... The fact that R- Japan ... from Pharmaceuticals and Medical Devices Agency (PMDA) on May 18, ... provide stem cell manufacturing service to medical institutions. As of ...
(Date:6/30/2015)... BOSTON , June 30, 2015  Juniper ... company focused on developing therapeutics that address unmet ... CFO George Elston will present at ... , Wednesday, July 8, 2015Time: , 4:45 PM ... NYWebcast (live & archive): , www.juniperpharma.com, under  ...
Breaking Biology Technology:NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 2NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 3Pistoia Alliance Launches Startup Challenge 2Pistoia Alliance Launches Startup Challenge 3R-Japan Obtained Autologous Stem Cell Manufacturing License from the Ministry of Health, Labour and Welfare 2Juniper Pharmaceuticals to Present at Cantor Fitzgerald Inaugural Healthcare Conference on July 8, 2015 2
... Madison, Wis. -- One of the greatest agricultural and ... of the answer may lie in a plot of corn ... gives new life to ancient genetic material. , ,While many ... progenitor of maize, others believe that the differences between teosinte ...
... little bit of effort and a microphone, you can ... key is creating something that is worth listening to. ... combined the words "iPod" and "broadcasting." Podcast listeners typically ... and transfer the files to their MP3 players. The ...
... - Mobility is the new mantra for student technology ... finds laptop computer ownership about to surpass desktop computers ... 2005 University of Wisconsin-Madison Computing Survey, which randomly polled ... technology usage as well as future areas of need. ...
Cached Biology Technology:Single gene controls key difference between maize and its wild ancestor 2Single gene controls key difference between maize and its wild ancestor 3Can you hear me now? I'm podcasting 2Can you hear me now? I'm podcasting 3Student survey shows surging demand for wireless access 2
... Workstation brings together UV irradiation and antimicrobial ... against PCR contamination! Quickly inactivate DNA ... a clean environment with antimicrobial coated stainless ... within minutes with built-in 30-minute timer ...
... Recombinant Enterokinase (rEK) is a highly purified ... enterokinase, a serine protease which recognizes the ... (AspAspAspAspLys?) and has similar enzymatic activity (1). ... and purified to yield the highest activity ...
... benefits of a Hybridizer and UV Crosslinker (254nm ... , This unique, new design for ... at one location , Hybridizer and Crosslinker ... other , The Crosslinker is also available ...
Preparation Note: Prepared essentially by method of Singer, T.P., J. Biol. Chem., 174, 11 (1948). Quality Clarifier: Contains lipase Unit Definition: One unit will hydrolyze 1.0 μmole of p-ni...
Biology Products: