Navigation Links
In the sea slug's defense against lobsters, confusion is key

Like many other marine creatures, Aplysia, a common sea slug, enlists chemical defenses against its predators, but the mechanisms by which such chemical attacks actually work against their intended targets are not well understood by researchers. New work has now shown that such chemical defenses can involve modes of trickery that had not previously been appreciated as components of chemical defense.

When attacked by predatory spiny lobsters, sea slugs (also known as sea hares) release an inky secretion, termed ink and opaline, from a pair of glands. The new findings show that Aplysia's defensive secretion includes a variety of chemicals that together comprise a multi-pronged attack on the predator's nervous system, resulting in the usurpation of its normal behavioral control system and a confused response that facilitates the slug's ultimate escape.

The team of researchers conducting the study, Cynthia Kicklighter, Zeni Shabani, and Paul Johnson, led by Charles Derby of Georgia State University, discovered that in addition to containing unpalatable, aversive chemicals, Aplysia's inky secretion contains large quantities of chemicals that are also found in the food of spiny lobsters and that indeed these chemicals serve to activate nervous-system pathways that control feeding behaviors of the lobster. The inky secretion also stimulates other behaviors in the lobster, including grooming and avoidance. Ironically, the slug's ability to trick the lobster's nervous system into activating feeding-associated behaviors succeeds, in combination with ink and opaline's other effects, in distracting the lobster sufficiently to enable the slug's successful evasion.

Because the set of behaviors stimulated by the slug's secretions resemble activation of a feeding pathway, the researchers named this novel chemical defense "phagomimicry." The stickiness of the slug's secretions appears to contribute to long-lasting effects on the target despite the aqueous envi ronment, enhancing the effectiveness of the slug's defense.

Cynthia E. Kicklighter, Shkelzen Shabani, Paul M. Johnson, and Charles D. Derby: "Sea Hares Use Novel Antipredatory Chemical Defenses"


'"/>

Source:Cell Press


Related biology news :

1. Female sex hormones play a vital role in defense against sexually transmitted diseases
2. Disease diagnosis, biodefense among UH chemical research projects
3. Comprehensive biodefense text published
4. Ancient immune defense mechanism is no match for HIV-1
5. Discovery could be key to bioterrorism defense
6. Variation in HIVs ability to disable host defenses contributes to rapid evolution
7. Scientists show that tick-borne flaviviruses use a novel mechanism to evade host defenses
8. Researchers uncover E. colis defense mechanism
9. Energy management in cells may hold key to cancer defense
10. Bacteria recognize antimicrobials, respond with counter-defenses
11. Researchers discover new tumor defense system
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/30/2017)... ANGELES , March 30, 2017  On April ... Hack the Genome hackathon at Microsoft,s ... exciting two-day competition will focus on developing health and ... Hack the Genome is the ... been tremendous. The world,s largest companies in the genomics, ...
(Date:3/30/2017)... 2017 Trends, opportunities and forecast in this ... technology (fingerprint, AFIS, iris recognition, facial recognition, hand geometry, ... end use industry (government and law enforcement, commercial and ... and others), and by region ( North America ... Asia Pacific , and the Rest of the ...
(Date:3/28/2017)... , March 28, 2017 The ... Hardware (Camera, Monitors, Servers, Storage Devices), Software (Video Analytics, ... Region - Global Forecast to 2022", published by MarketsandMarkets, ... 2016 and is projected to reach USD 75.64 Billion ... and 2022. The base year considered for the study ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... A new study published in ... and fresh in vitro fertilization (IVF) transfer cycles. The multi-center matched ... , After comparing the results from the fresh and frozen transfer cohorts, the ...
(Date:10/10/2017)... (PRWEB) , ... October 10, ... ... development-stage cancer-focused pharmaceutical company advancing targeted antibody-drug conjugate (ADC) therapeutics, today confirmed ... targeted HPLN (Hybrid Polymerized Liposomal Nanoparticle), a technology developed in collaboration with ...
(Date:10/10/2017)... International research firm Parks Associates announced today that Tom ... 2017 Annual Meeting , October 11 in Scottsdale, Arizona ... and how smart safety and security products impact the competitive landscape. ... Parks Associates: Smart Home Devices: Main Purchase Driver ... "The residential security market has experienced continued growth, and ...
(Date:10/10/2017)... ... October 10, 2017 , ... The ... prestigious awards honoring scientists who have made outstanding contributions to analytical ... during Pittcon 2018, the world’s leading conference and exposition for laboratory science, which ...
Breaking Biology Technology: