Featured Research

from universities, journals, and other organizations

Rare research into false killer whales reveals anti-predator partnerships

Date:
October 3, 2013
Source:
Wiley
Summary:
False killer whales (Pseudorca crassidens) are one of the least studied species of ocean dolphin, but new light has been cast on their behavior by a team of marine scientists from New Zealand. The research reveals how a population off the coast of New Zealand has developed a relationship with bottlenose dolphins to defend themselves from predation.

False killer whales (Pseudorca crassidens) are one of the least studied species of ocean dolphin, but new light has been cast on their behavior by a team of marine scientists from New Zealand. The research, published in Marine Mammal Science, reveals how a population off the coast of New Zealand has developed a relationship with bottlenose dolphins to defend themselves from predation.

The 17-year study revealed that all 61 individuals in the area were linked in a single social network, while 88% of identified individuals were re-sighted in the same area over several years.

Groups of false killer whales were also found to associate with bottlenose dolphins (Tursiops truncates). These partnerships were found to span more than 5 years and up to 650 km.

"The anti-predatory function of mixed species associations is mostly achieved through a greater chance of detecting a predator through more eyes watching out," said Jochen R. Zaeschmar, from Massey University, New Zealand. "However, it is hard to say if this is mutualistic or parasitic, that is whether the two species actually co-operate or whether one just opportunistically exploits the detection ability of the other. Lastly, as both species are highly social, sociality may also play a role."

"Given the level of site fidelity documented, a small and possibly closed false killer whale population in New Zealand waters cannot be ruled out. A reassessment of the current conservation status in New Zealand may therefore be prudent and further research warranted into the dynamics of this population," concluded Zaeschmar.


Story Source:

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


Journal Reference:

  1. Jochen R. Zaeschmar, Ingrid N. Visser, Dagmar Fertl, Sarah L. Dwyer, Anna M. Meissner, Joanne Halliday, Jo Berghan, David Donnelly, Karen A. Stockin. Occurrence of false killer whales (Pseudorca crassidens) and their association with common bottlenose dolphins (Tursiops truncatus) off northeastern New Zealand. Marine Mammal Science, 2013; DOI: 10.1111/mms.12065

Cite This Page:

Wiley. "Rare research into false killer whales reveals anti-predator partnerships." ScienceDaily. ScienceDaily, 3 October 2013. <www.sciencedaily.com/releases/2013/10/131003110158.htm>.
Wiley. (2013, October 3). Rare research into false killer whales reveals anti-predator partnerships. ScienceDaily. Retrieved August 29, 2014 from www.sciencedaily.com/releases/2013/10/131003110158.htm
Wiley. "Rare research into false killer whales reveals anti-predator partnerships." ScienceDaily. www.sciencedaily.com/releases/2013/10/131003110158.htm (accessed August 29, 2014).

Share This




More Plants & Animals News

Friday, August 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Killer Amoeba Found in Louisiana Water System

Killer Amoeba Found in Louisiana Water System

AP (Aug. 28, 2014) State health officials say testing has confirmed the presence of a killer amoeba in a water system serving three St. John the Baptist Parish towns. (Aug. 28) Video provided by AP
Powered by NewsLook.com
Raw: Australian Sheep Gets Long Overdue Haircut

Raw: Australian Sheep Gets Long Overdue Haircut

AP (Aug. 28, 2014) Hoping to break the record for world's wooliest, Shaun the sheep came up 10 pounds shy with his fleece weighing over 50 pounds after being shorn for the first time in years. (Aug. 28) Video provided by AP
Powered by NewsLook.com
Minds Blown: Scientists Develop Fish That Walk On Land

Minds Blown: Scientists Develop Fish That Walk On Land

Newsy (Aug. 28, 2014) Canadian scientists looking into the very first land animals took a fish out of water and forced it to walk. Video provided by Newsy
Powered by NewsLook.com
Fake Dogs Scare Real Geese from Wis. Park

Fake Dogs Scare Real Geese from Wis. Park

AP (Aug. 28, 2014) Parks officials in Stevens Point, Wisconsin had a fowl problem. Canadian Geese were making a mess of a park, so officials enlisted cardboard versions of man's best friend. (Aug. 28) 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