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 21, 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 21, 2014).

Share This




More Plants & Animals News

Thursday, August 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Newsy (Aug. 21, 2014) — An experimental drug used to treat Marburg virus in rhesus monkeys could give new insight into a similar treatment for Ebola. Video provided by Newsy
Powered by NewsLook.com
Terrifying City-Dwelling Spiders Are Bigger And More Fertile

Terrifying City-Dwelling Spiders Are Bigger And More Fertile

Newsy (Aug. 21, 2014) — According to a new study, spiders that live in cities are bigger, fatter and multiply faster. Video provided by Newsy
Powered by NewsLook.com
Lost Brain Cells To Blame For Sleep Problems Among Seniors

Lost Brain Cells To Blame For Sleep Problems Among Seniors

Newsy (Aug. 21, 2014) — According to a new study, elderly people might have trouble sleeping because of the loss of a certain group of neurons in the brain. Video provided by Newsy
Powered by NewsLook.com
Ramen Health Risks: The Dark Side of the Noodle

Ramen Health Risks: The Dark Side of the Noodle

AP (Aug. 21, 2014) — South Koreans eat more instant ramen noodles per capita than anywhere else in the world. But American researchers say eating too much may increase the risk of diabetes, heart disease and stroke. (Aug. 21) 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