Featured Research

from universities, journals, and other organizations

Damselfish 'gardeners' selectively weed algal gardens

Date:
June 21, 2010
Source:
BioMed Central
Summary:
A species of damselfish, Stegastes nigricans, selectively weed the algal gardens on which they feed in order to encourage the growth of their preferred algal species of Polysiphonia and suppress the growth of less palatable algae. In a new study, researchers investigate the feeding preferences of damselfish and explore their diverse gardening systems across the Indo-West Pacific region.

This is a damselfish.
Credit: Hata et al., BMC Evolutionary Biology

A species of damselfish, Stegastes nigricans, selectively weed the algal gardens on which they feed in order to encourage the growth of their preferred algal species of Polysiphonia and suppress the growth of less palatable algae. Researchers writing in the open access journal BMC Evolutionary Biology investigate the feeding preferences of damselfish and explore their diverse gardening systems across the Indo-West Pacific region.

Hiroki Hata from Ehime University, Japan, worked with a team of researchers to explore this 'gardening' behavior. He said, "We surveyed 320 territories of 18 damselfish species and thoroughly examined algae from each fish territory from coral reefs in Egypt, Kenya, Mauritius, the Maldives, Thailand, Borneo, the Okinawa Islands, and the Great Barrier Reef. We found that although the crop alga species shifted in the West Indian Ocean, the intensive farming by damselfish was seen throughout this geographic range."

The damselfish do not have any organs to allow them to grind cellulose fibers, and lack the digestive enzymes required to digest many algal species. The most common algae they can eat, the red alga Polysiphonia, are less competitive than the inedible species and so the damselfish help them out by killing off their rivals. This 'gardening' behavior results in a mutualistic association between Polysiphonia and this particular species of damselfish and it is notable for being one of the first examples of mutualism to be found in a non-terrestrial habitat.

Speaking about the results, Hata said, "Obligate reciprocal interaction between marine algae and herbivorous damselfish, called 'cultivation mutualism' was found to be largely maintained in the Indo-West Pacific."


Story Source:

The above story is based on materials provided by BioMed Central. Note: Materials may be edited for content and length.


Journal Reference:

  1. Hiroki Hata, Katsutoshi Watanabe and Makoto Kato. Geographic variation in the damselfish-red alga cultivation mutualism in the Indo-West Pacific. BMC Evolutionary Biology, 2010; (in press) [link]

Cite This Page:

BioMed Central. "Damselfish 'gardeners' selectively weed algal gardens." ScienceDaily. ScienceDaily, 21 June 2010. <www.sciencedaily.com/releases/2010/06/100617194322.htm>.
BioMed Central. (2010, June 21). Damselfish 'gardeners' selectively weed algal gardens. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2010/06/100617194322.htm
BioMed Central. "Damselfish 'gardeners' selectively weed algal gardens." ScienceDaily. www.sciencedaily.com/releases/2010/06/100617194322.htm (accessed July 31, 2014).

Share This




More Plants & Animals News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Visitors Feel Part of the Pack at Wolf Preserve

Visitors Feel Part of the Pack at Wolf Preserve

AP (July 31, 2014) Seacrest Wolf Preserve on the northern Florida panhandle allows more than 10,000 visitors each year to get up close and personal with Arctic and British Columbian Wolves. (July 31) Video provided by AP
Powered by NewsLook.com
Florida Panther Rebound Upsets Ranchers

Florida Panther Rebound Upsets Ranchers

AP (July 31, 2014) With Florida's panther population rebounding, some ranchers complain the protected predators are once again killing their calves. (July 31) Video provided by AP
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
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:
from the past week

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