Navigation Links
Venomous sea snakes play heads or tails with their predators
Date:8/5/2009

head" was facing him while the tail probed the coral. Rasmussen's surprise grew when he saw a second head emerge from the coral instead of the expected tail. It was only when the snake swam away that the first head was clearly seen to be a paddling tail.

To build upon this discovery researchers examined 98 Sea Kraits from three major museum collections in Paris, Berlin and Copenhagen while also monitoring the behaviour of wild Sea Kraits in Solomon Islands during the Danish Galathea 3 Expedition. The research confirmed that all snakes of this species had a distinctive colouration pattern, with a bright yellow horseshoe marking on the tip of the head and the tail. The yellow was deeper than the colours on the rest of the body and the black colorations were much longer than the dark bands on the rest of the body, highlighting the similarity between the head and the tail.

The reason for this mixture of behaviour and coloration results from a developed defence strategy needed when the snake is probing for prey. Despite being extremely venomous sea snakes are susceptible to attack from several predators such as sharks, large bony fishes, and even birds.

"The value of such an adaptation is twofold; it may increase the chances of surviving predator attack by exposing a less 'vital' body part, but more importantly it may deter attack in the first place if attackers perceive the tail as the venomous snakes head," said Rasmussen.

Similar defence mechanisms have been discovered in lizards, and some land snakes have developed ingenious camouflage deterrent behaviour strategies, but this defence has never been associated with other lethally venomous predators such as sea snakes.

Traditionally the only evidence of a defence behaviour strategy in sea snakes has been documented in individual cases, when a snake was exposed to and aware of an imminent danger. This research is the first record of a combined false-head-behaviour and f
'/>"/>

Contact: Ben Norman
Benorman@wiley.com
44-124-377-0375
Wiley-Blackwell
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Tentacles of venom: New study reveals all octopuses are venomous
2. Snakes and how they helped our big brains evolve
3. Zoologists: Sea snakes seek out freshwater to slake thirst
4. Snakes, salamanders and other creatures thrive in areas with higher deer populations
5. The evolution of aversion: Why even children are fearful of snakes
6. Magnetic snakes control fluids, gravity-defying droplets, and solving a dragonfly mystery
7. Dogs, humans, put heads together to find cure for brain cancer
8. Our brains make their own marijuana: Were all pot heads deep inside
9. Male crickets with bigger heads are better fighters, study reveals, echoing ancient Chinese text
10. CT scans reveal that dinosaurs were airheads
11. United we stand: When cooperation butts heads with competition
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2014)... can affect animal movement and communication, with unknown ecological ... and the cole Pratique des Hautes tudes (EPHE) CRIOBE ... development and increases larval mortality in sea hares. , ... used in this study) usually hatch from their ... alga but this study, conducted in a coral reef ...
(Date:7/31/2014)... new meta-analyses involving tree nuts (almonds, Brazil nuts, cashews, ... recently published in the online publications, British Medical ... ONE (ii). The BMJ Open article ... syndrome (MetS) criteria and showed that tree nut consumption ... blood glucose. The PLOS ONE article focused ...
(Date:7/30/2014)... paving the way for a breakthrough that may ... exposed to poisonous chemicalsparticularly those in pesticides and ... current issue of the journal ChemBioChem ... compounds commonly used in pesticides and warfare agents. ... of Engineering Associate Professor of Chemical and Biological ...
Breaking Biology News(10 mins):Boat noise impacts development and survival of sea hares 2New international tree nut council study looks at nuts, diabetes and metabolic syndrome 2Engineering a protein to prevent brain damage from toxic agents 2
... Washington, D.C. (September 14, 2010) -- Piezoelectric materials ... electrical field. And vice-versa, they contract or expand when ... from the Greek word meaning to squeeze or press, ... was discovered in several crystals in 1880. But in ...
... Charlotte, North Carolina is a rapidly growing city. Charlotte ... that as a contradiction. , In Charlotte, there are ... shadow of the towers of the nation,s second largest ... undeveloped land within the city,s boundaries. Social scientists find ...
... EVANSTON, Ill. --- It seems the old nature versus ... study of men in the Philippines makes a strong case ... that rapid weight gain in the first six months of ... experienced rapid growth as babies -- an indication that they ...
Cached Biology News:Lead-free piezoelectric materials of the future 2Interdisciplinary research looks at Charlotte's green mystery 2Interdisciplinary research looks at Charlotte's green mystery 3Interdisciplinary research looks at Charlotte's green mystery 4Interdisciplinary research looks at Charlotte's green mystery 5Interdisciplinary research looks at Charlotte's green mystery 6Male maturity shaped by early nutrition 2Male maturity shaped by early nutrition 3
(Date:7/30/2014)... 30, 2014  Replikins Ltd. today released new data ... virus. Before the current outbreaks, the mean Ebola Reston ... acids) between 1995 and 2002 was 1.1; the mean ... and sixteen-fold in 2013, thus predicting the current outbreaks ... has been shown to be able to predict outbreaks ...
(Date:7/30/2014)... , July 30, 2014   Wyle ... Fully Integrated Lifecycle Mission Support Services (FILMSS) contract ... (NASA). Under the terms of the contract, Wyle ... at Moffett Field, Calif. In particular, Wyle will ... flight development projects on the International Space Station ...
(Date:7/30/2014)... Vycom announces the addition of Thermax PVC ... Factory Mutual (FM) 4910 fire propagation and smoke generation ... process tools, fume hoods, furniture and cabinetry. These criteria ... wafers used in electronic chip manufacturing. , ... excellent workability and superior aesthetics. It is available in ...
(Date:7/30/2014)... July 30, 2014 Researchers often use ... biology, but such devices can do much more ... As such, researchers have looked to patterned assemblies ... metabolic engineering to characterize – and potentially ... devices are envisioned to recreate animal and human ...
Breaking Biology Technology:Wyle Wins NASA's Fully Integrated Lifecycle Mission Support Services Contract 2Vycom Announces Flametec® Thermax PVC (FM4910 Listed) For a Variety of Clean Room Applications with Excellent Workability and Aesthetics 2UMD Researchers Bridge Gap between Microelectronics, Biological Systems 2UMD Researchers Bridge Gap between Microelectronics, Biological Systems 3UMD Researchers Bridge Gap between Microelectronics, Biological Systems 4
... LEUVEN, Belgium and LUND, Sweden, September 7 ... Anticoagulant Into Phase,II Clinical Development ThromboGenics NV ... disease, and co-development partner, BioInvent,International (Nordic Exchange: BINV), ... initial follow-up of all volunteers,in the first Phase ...
... 6 Globally, approximately 418 billion,people are currently ... costs of hepatitis in the 21st century cannot ... a,new report by Kalorama Information. Paradoxically, despite ... necessary steps to contain hepatitis. Yet the incidence ...
... VRUS ) and Roche (OTC: RHHBY) announced ... the treatment of chronic hepatitis C,virus (HCV) will ... Hepatitis C,Virus and Related Viruses being held from ... of PSI-6130, is an oral cytidine nucleoside,analog polymerase ...
Cached Biology Technology:ThromboGenics and BioInvent Announce Successful Completion of Phase I Clinical Trial of the Anticoagulant TB-402 2ThromboGenics and BioInvent Announce Successful Completion of Phase I Clinical Trial of the Anticoagulant TB-402 3ThromboGenics and BioInvent Announce Successful Completion of Phase I Clinical Trial of the Anticoagulant TB-402 4ThromboGenics and BioInvent Announce Successful Completion of Phase I Clinical Trial of the Anticoagulant TB-402 5Touching 418 Billion Lives, Hepatitis Still Presents Significant Threat to Global Health 2Pharmasset and Roche to Present R7128 Data at the 14th International Symposium on Hepatitis C Virus and Related Viruses 2Pharmasset and Roche to Present R7128 Data at the 14th International Symposium on Hepatitis C Virus and Related Viruses 3Pharmasset and Roche to Present R7128 Data at the 14th International Symposium on Hepatitis C Virus and Related Viruses 4Pharmasset and Roche to Present R7128 Data at the 14th International Symposium on Hepatitis C Virus and Related Viruses 5
Functionally tested for consistent G-banding of chromosomes....
... BacVector Insect Cell Medium is optimized ... Ea4 Insect Cells. In this protein-free medium, ... 1 * 107 cells/ml with viabilities above ... plaque assays, where color from X-gluc staining ...
... Grace's Insect Medium is formuatled for ... including Sf9 and Sf21 cells. Grace's ... transfectioin because it does not contain ... interfere with transfection. Grace's Insect Medium, ...
TNM-FH Insect Medium 1 liter...
Biology Products: