The bacteria reside inside a structure on the underside of the squid called the light organ. “Divining the Essence of Symbiosis: Insights from the Squid-Vibrio Model.” PLoS Biology 12, 2 (2014): e1001783.

McFall-Ngai, Margaret. McFall-Ngai, Margaret. 2.C.2, 2.D.1, 2.E.2, 2.E.3, 3.D.1, 3.D.2, 4.A.5, 4.B.3; SP6, IB Environmental Systems and Societies (2017). But the species continues to thrive in these waters in part because of its symbiotic relationship with the bioluminescent bacteria Aliivibrio fischeri (formerly Vibrio fischeri ). In this short animated film, Ed Yong and scientists Margaret McFall-Ngai and Edward Ruby explain how the Hawaiian bobtail squid recruits a specific type of light-producing bacteria, Vibrio fischeri, to colonize its light organ. The bacteria are essential for the squid to develop its light organ and produce light. The “Student Handout” probes students’ understanding of the key concepts addressed in the film. The bobtail squid is no bigger than a walnut and is a tasty mouthful for predators in the coastal waters of Hawaii. Describe the nature and consequences of the mutualistic relationship between the bobtail squid and the bacteria in its light organ. McFall-Ngai, Margaret. New research led by University of Hawaiʻi at Mānoa scientists revealed that, in the mutually beneficial relationship between with the Hawaiian bobtail squid, Euprymna scolopes, and the luminescent bacterium, Vibrio fischeri, an immune protein called “macrophage migration inhibitory factor” or “MIF,” is the maestro of daily rhythms. But the species continues to thrive in these waters in part because of its symbiotic relationship with the bioluminescent bacteria Aliivibrio fischeri (formerly Vibrio fischeri). Winogradsky Column: Microbial Ecology in a Bottle, Winogradsky Columns: Microbial Ecology in the Classroom. https://doi.org/10.1371/journal.pbio.1001783. At night, the bacteria produce a glow that matches the moonlight coming from above, rendering the squid virtually invisible to predators from below. The squid and the bacteria maintain a lifelong symbiotic relationship that benefits both species. This activity explores the content presented in the animated video Nature’s Cutest Symbiosis: The Bobtail Squid, which describes how the light produced by bacteria living inside bobtail squid helps the squid avoid its predators. Please see the Terms of Use for information on how this resource can be used. Sepiolida are iteroparous and a female might lay several clutches, each of 1-400 eggs (dependent on species), over her estimated one-year-long lifetime. Can a Fungus Save Plants from Global Warming. This short video explores the symbiotic relationship between the Hawaiian bobtail squid and light-producing bacteria. Please see the Terms of Use for information on how this resource can be used. The bacteria reside inside a structure on the underside of the squid called the light organ.
The eggs are covered with sand and left without parental care. In this short animated film, Ed Yong and scientists Margaret McFall-Ngai and Edward Ruby explain how the Hawaiian bobtail squid recruits a specific type of light … “Divining the Essence of Symbiosis: Insights from the Squid-Vibrio Model.”, Nature’s Cutest Symbiosis: The Bobtail Squid, Superbugs That Resist Antibiotics Can Evolve in 11 Days, How Giant Tube Worms Survive at Hydrothermal Vents, Mosquitoes Might Save Lives, Thanks to Bacteria, Microbes from Mom: Vaginal Birth vs. C-Section. “Divining the Essence of Symbiosis: Insights from the Squid-Vibrio Model.” Public Library of Science Biology 12, 2 (2014): e1001783. 2.C.2, 2.D.1, 2.E.2, 2.E.3, 3.D.1, 3.D.2, 4.A.5, 4.B.3, IB Environmental Systems and Societies (2017), https://doi.org/10.1371/journal.pbio.1001783, Superbugs That Resist Antibiotics Can Evolve in 11 Days, How Giant Tube Worms Survive at Hydrothermal Vents, Mosquitoes Might Save Lives, Thanks to Bacteria, Microbes from Mom: Vaginal Birth vs. C-Section.

The “Educator Materials” document provides suggested pause points in the film with questions for students, background information, and detailed discussion points; a list of related resources and references; and an answer key for the “Student Handout.”, camouflage, counterillumination, light organ, marine biology, microbe, mutualism, predation, I Contain Multitudes. The “Abbreviated Film Guide” provides a short summary of the film, along with key concepts and connections to curriculum standards. The bobtail squid is no bigger than a walnut and is a tasty mouthful for predators in the coastal waters of Hawaii. Can a Fungus Save Plants from Global Warming? A spectacular feature of this symbiosis is that squid aren’t born with a complete light organ—the bacteria help the organ develop.

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