Navigation Links
Squid pheromone sparks extreme aggression on contact
Date:2/10/2011

When male squid come into contact with a chemical found on the outside of eggs laid by females, they instantly go from swimming along calmly and minding their own business to a state of extreme aggression, according to a new report published online on February 10 in Current Biology, a Cell Press publication. After just a touch of an egg, males will often fight vigorously with other males in an attempt to gain preferred access to mates, even when females aren't around.

The researchers believe that the findings represent the first detailed evidence of an aggression-inducing contact pheromone in any aquatic animal.

"The identification of this pheromone as a key component of this signaling system is highly unusual because the male squids need only to contact these protein molecules to initiate the complex cascade of behaviors that we term aggressive fighting," said Roger Hanlon of the Marine Biological Laboratory at Woods Hole.

That's particularly notable because aggression is generally thought to be a rather complex process, involving some combination of neural, hormonal, physiological, and psychological stimuli. "Here we find what appears to be a strong and seemingly direct stimulus from certain protein molecules," Hanlon says.

Squid are highly advanced marine invertebrates with a complex mating system rivaling that of vertebrates. The loliginid squid that were the focus of the current study live for about a year, with most mating and egg laying occurring in the spring, when the squids migrate from deeper offshore waters to shallower waters along the coast from North Carolina to southern Maine. Females typically mate multiple times, and males compete fiercely for the opportunity to mate. When males see eggs on the seafloor, they will typically approach and, upon touching them, immediately escalate into intense physical fighting with any nearby males.

Hanlon and his colleagues have now traced that reaction to a
'/>"/>

Contact: Elisabeth Lyons
elyons@cell.com
617-386-2121
Cell Press
Source:Eurekalert

Page: 1 2

Related biology news :

1. Squid studies provide valuable insights into hearing mechanisms
2. Habitat of elusive Northern squid documented by researcher
3. URI researcher sheds light on man-eating squid; finds them timid, nonthreatening
4. URI researcher sheds light on man-eating squid; finds them timid, non-threatening
5. Ocean acidification from CO2 emissions will cause physiological impairment to jumbo squid
6. Chloride increases response to pheromones and odors in mouse sensory neurons
7. Grant sparks hope for incurable disease
8. Sparks to receive Liebig Medal from International Union of Soil Sciences
9. Prolonged stress sparks ER to release calcium stores and induce cell death in aging-related diseases
10. A thirst for blood sparks toxic algal blooms
11. Volcanoes may have provided sparks and chemistry for first life
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/19/2015)... , March 19, 2015  NXT-ID, Inc. (NASDAQ: ... focused on the growing mobile commerce market, announces its biometric ... news clip that aired this week on Washington ... In a segment "The Next Great Thing", host ... new way to pay, and ,a really big breakthrough in ...
(Date:3/17/2015)... , March 17, 2015 MedNet ... specializing in clinical study management systems, is pleased ... attendance at ARENA,s Outsourcing in Clinical Trials Southeast ... event provides an excellent forum for MedNet to ... and affordable software-as-a-service (SaaS) eClinical technology platform. ...
(Date:3/17/2015)... 2015  MecklerMedia Corporation (OTCQX: MECK) announced its ... robots ever held in New York ... 11-13, 2015 at the Javits Convention Center. ... include: Acorn Product Development; Axis NJ; c-Link Systems; ... Littler; NewBotic Corporation; Neya Systems LLC; Reliabotics; RoboKind; ...
Breaking Biology News(10 mins):NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 2NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 3Connect With MedNet Solutions At Outsourcing In Clinical Trials Southeast 2MecklerMedia's RoboUniverse New York Announces Sponsors and Exhibitors, May 11-13, 2015 2
... crop in states such as Massachusetts, Wisconsin, New Jersey, ... problems for growers trying to realize profits in heavy ... pest damage can have a particularly significant negative impact ... feeding preferences of insects, entomologists have reported that several ...
... , JERUSALEM, ISRAEL, June 22, 2011 Ben-Gurion University ... most comprehensive report to date on Israel,s environmental movement. ... experts and public support, as well as its perilous ... Movement: Trends, Needs and Potential," was presented to Knesset ...
... Evolution is usually thought to be a very ... to adaptive mutations. But environmental change due to things ... very fast. There are just two options for species ... become extinct. So, according to McGill biology professor, ...
Cached Biology News:Pest preferences for cranberry cultivars determined 2Ben-Gurion University team presents environment movement report to Israel's Knesset 2Ben-Gurion University team presents environment movement report to Israel's Knesset 3Evolution to the rescue 2
(Date:4/16/2015)... and OSAKA, Japan ... Cell Research Application (CiRA) of Kyoto University and ... they will work together to develop clinical applications ... as heart failure, diabetes mellitus, neurological disorders and ... Cell Applications" (T-CiRA) is designed to expedite multiple ...
(Date:4/16/2015)... 2015 Proove Biosciences , Inc. ... BIO Contest for the 2015 BIO International Convention. ... BIO International Convention will take place June 15-18 at ... Buzz of BIO contest, industry leaders will be voting ... the conference. The community voting period began on April ...
(Date:4/16/2015)... OncoTAb, Inc., a University ... company, announced today the appointment of physician and ... Operating Officer (COO). Cooper brings to OncoTAb more ... diagnostic and biotechnology platforms in the fields of ... career transcends the field of medical and scientific ...
(Date:4/16/2015)... 2015  RegeneRx Biopharmaceuticals, Inc. (OTCQB: RGRX) ("the ... venture with G-treeBNT (ReGenTree LLC) has retained Ora, ... for the orphan disorder, neurotrophic keratopathy (NK), and ... syndrome (DES) in the U.S.  Both trials will ... year.  Each of these eye disorders was being ...
Breaking Biology Technology:CiRA and Takeda Enter 10-year Collaboration on iPS Cell Research 2CiRA and Takeda Enter 10-year Collaboration on iPS Cell Research 3Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 2Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 3OncoTAb Names Dr. David L. Cooper as COO 2RegeneRx JV Retains Ora, Inc. to Conduct Phase 3 Trial for NK and Phase 2b/3 Trial for Dry Eye Syndrome in U.S. 2RegeneRx JV Retains Ora, Inc. to Conduct Phase 3 Trial for NK and Phase 2b/3 Trial for Dry Eye Syndrome in U.S. 3RegeneRx JV Retains Ora, Inc. to Conduct Phase 3 Trial for NK and Phase 2b/3 Trial for Dry Eye Syndrome in U.S. 4RegeneRx JV Retains Ora, Inc. to Conduct Phase 3 Trial for NK and Phase 2b/3 Trial for Dry Eye Syndrome in U.S. 5
... , , SUNNYVALE, Calif., July ... endovascular devices for the treatment of chronic total occlusions (CTOs), today ... Operating Officer. Chris previously held the position of Executive VP, Sales ... in Medical Devices including the last 2 years at FlowCardia. , ...
... LONG BRANCH, N.J., July 23 The 2009 Pharma ... the current 500 attendees and 100 exhibitors have been posted ... Alexay of Apaporis LLC, the event organizer. Attendance is ... 2008,s record turnout. One thousand attendees are expected on ...
... , SEATTLE, July 23 Cell Therapeutics, Inc. (Nasdaq ... of an underwritten public offering of 29,332,107 shares of its common ... common stock at a price to the public of $1.30 per ... common stock, for gross proceeds of approximately $38.1 million. In ...
Cached Biology Technology:FlowCardia, Inc. Appoints Chris Barys to Chief Operating Officer 2ChemOutsourcing Unveils 2009 Attendee List for September Show in New Jersey 2Cell Therapeutics, Inc. Announces Pricing of Public Offering of Common Stock and Warrants 2Cell Therapeutics, Inc. Announces Pricing of Public Offering of Common Stock and Warrants 3
... for ChIP assays. Efficient fixation of a ... crucial step for the Chromatin-immunoprecipitation (ChIP) technique. ... most important parameter. Two major problems concerning ... into account: first, an excess of crosslinking ...
Mouse monoclonal antibody to ANAPC2 - anaphase promoting complex subunit 2...
Handy 100V Power Supply is Low-cost, compact and lightweight. Easy to operate - either 50 or 100 VDC is selectable as the output voltage. These voltages are sufficient for ordinary electrophoresis....
Rabbit polyclonal to Synapsin II ( Abpromise for all tested applications). entrezGeneID: 6854 SwissProtID: Q92777...
Biology Products: