Featured Research

from universities, journals, and other organizations

Small fish recover faster than large fish

Date:
September 30, 2011
Source:
University of Illinois College of Agricultural, Consumer and Environmental Sciences
Summary:
In football, linebackers are usually the largest players and have the endurance required to get through a game plus overtime. But when it comes to fish, larger doesn't always mean stronger. A new study showed smaller fish recover from exertion faster than larger fish.

This is a largemouth bass being released.
Credit: University of Illinois

In football, linebackers are usually the largest players and have the endurance required to get through a game plus overtime. But when it comes to fish, larger doesn't always mean stronger. A University of Illinois study showed smaller fish recover from exertion faster than larger fish.

Related Articles


"The point of the study was to replicate an angling situation where anglers catch and release fish," said researcher Cory Suski. "We wanted to know if large fish and small fish had similar physiological responses to being exercised and released, particularly regarding the time it takes the fish to recover from exercise.

"What we found is that the large fish take longer to recover from exercise than the small fish do. None of the fish really experienced any major hardships, and they all survived easily, but the small fish recovered faster than the big fish."

Suski said the findings will be important for fisheries conservation.

"Big fish are reproductively valuable as they tend to have more babies than small fish," he said. " Big fish are also rarer than small fish, and they are more often targeted by anglers. If anglers are planning to release a large fish after catching it, the results from this study emphasize the importance of angling the fish for a short duration, handling the fish gently, and getting it back into the water quickly so that excessive disturbances are minimized and the fish can recover quickly, begin feeding, and get back to normal."

The fish in the study were largemouth bass. They were caught in nets, put into dark tanks and allowed to rest.

Later they were chased for 60 seconds to simulate angling and the amount of energy they might expend during a catch-and-release episode. They were allowed to recover for 0, 1, 2, or 4 hours before being sampled for plasma and white muscle.

Large largemouth bass exhibited elevated concentrations of plasma glucose and sodium relative to small fish following the exercise challenge.

Large fish required additional time to clear metabolic disturbances in plasma and failed to restore potassium to basal levels even following 4 hours of recovery, indicating an improved ability of the smaller fish to recover from disturbances.

"Before we began the research, we predicted that the larger fish would respond and recover from exercise more quickly, providing another size-based advantage for larger fish, but we found the opposite to be true," Suski said.

Suski said anglers have always known that big fish are special, and the results of this study emphasize the need to treat big fish gently so they can be caught again in the future.

The effect of body size on post-exercise physiology in largemouth bass was published in Fish Physiology and Biochemistry. Andrew J. Gingerich co-authored the paper.


Story Source:

The above story is based on materials provided by University of Illinois College of Agricultural, Consumer and Environmental Sciences. Note: Materials may be edited for content and length.


Journal Reference:

  1. Andrew J. Gingerich, Cory D. Suski. The effect of body size on post-exercise physiology in largemouth bass. Fish Physiology and Biochemistry, 2011; DOI: 10.1007/s10695-011-9510-3

Cite This Page:

University of Illinois College of Agricultural, Consumer and Environmental Sciences. "Small fish recover faster than large fish." ScienceDaily. ScienceDaily, 30 September 2011. <www.sciencedaily.com/releases/2011/09/110921120126.htm>.
University of Illinois College of Agricultural, Consumer and Environmental Sciences. (2011, September 30). Small fish recover faster than large fish. ScienceDaily. Retrieved January 25, 2015 from www.sciencedaily.com/releases/2011/09/110921120126.htm
University of Illinois College of Agricultural, Consumer and Environmental Sciences. "Small fish recover faster than large fish." ScienceDaily. www.sciencedaily.com/releases/2011/09/110921120126.htm (accessed January 25, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Sunday, January 25, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Florida Might Legalize Black Bear Hunting

Florida Might Legalize Black Bear Hunting

Newsy (Jan. 24, 2015) A string of black bear attacks has Florida officials considering lifting the ban on hunting the animals to control their population. Video provided by Newsy
Powered by NewsLook.com
Ebola Killing Large Portion Of Ape Population

Ebola Killing Large Portion Of Ape Population

Newsy (Jan. 23, 2015) Experts estimate Ebola has wiped out one-third of the world&apos;s gorillas and chimpanzees. Video provided by Newsy
Powered by NewsLook.com
Controversy Shrouds Captive Killer Whale in Miami

Controversy Shrouds Captive Killer Whale in Miami

Reuters - Light News Video Online (Jan. 23, 2015) Activists hope the National Oceanic and Atmospheric Agency (NOAA) will label killer whales endangered, allowing lawyers to sue a Miami aquarium to release an orca into the wild after 44 years. Jillian Kitchener reports. Video provided by Reuters
Powered by NewsLook.com
‘Healthy’ Foods That Surprisingly Pack on Pounds

‘Healthy’ Foods That Surprisingly Pack on Pounds

Buzz60 (Jan. 23, 2015) Some &apos;healthy&apos; foods are actually fattening. Fitness and nutrition expert John Basedow (@JohnBasedow) shines a light on the sneaky foods like nuts, seeds, granola, trail mix, avocados, guacamole, olive oil, peanut butter, fruit juices and salads that are good for you...but not so much for your waistline. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins