EEB Seminars

Jenn doing field work

Spring 2013 Invited Seminar Speakers

Wednesdays, 12:30-1:30 PM
Natural Sciences II Annex 101

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Photo Journal

Assistant Professor Kathleen Kay studies a diverse radiation of the genus Costus, a group of gingers in the Central and South American rainforests. All species in the Neotropics use either orchid bees or hummingbirds for pollination, and hummingbird pollination has evolved many times.Professor Dan Costa and colleagues of the Souther Ocean Global Ocean Ecosystems Dynamics (SO GLOBEC) program are trying to understand the southern ocean circulation processes around Antarctica and their effect on sea ice formation, Antarctic krill distributions and the factors that affect krill survivorship and availability to higher trophic levels. Their focus is to relate the behavior of crabeater seals to the distribution and abundance of krill and to examine factors which contribute to krill being the optimal prey.The North American bullfrog (Rana catesbeiana) is thought to be a carrier of the pathogens that cause both chytridiomycosis and ranaviral disease, two emerging infectious diseases associated with large amphibian die-offs. Assistant Professor Marm Kilpatrick and colleagues found imported frogs infected with both pathogens in Los Angeles, New York, and San Francisco, suggesting that the amphibian trade can contribute to introductions of these pathogens into new regions.Professor Giacomo Bernardi documented tool use an orange-dotted tuskfish digs a clam out of the sand, carries it over to a rock, and repeatedly throws the clam against the rock to crush it.Assistant Professor Jarmila Pittermann studies xylem structure and function across the gymnosperm phylogenyAssistant Professor Rita Mehta discovered that morays have a reduced capacity to suction feed and apprehend their prey by biting. When the prey item is apprehended in their oral jaws, morays protract a pair of pharyngeal jaws, located behind the head, into their oral cavity. Once in the oral cavity, the pharyngeal jaws bite down on the prey item and transport the prey into the esophagus.Professor Laurel Fox downloading microclimate data at her ongoing herbivore exclusion experiment site in the chaparral ecosystem at Fort Ord, a UC reserve near Monterey, CA. For the past 15 years, Dr. Fox has been studying the community ecology of browsed and unbrowsed microcosms that she fences off using hog wire. Enclosed unbrowsed plants grow to be large and leafy while the controls are browsed continuously by deer to the point where they look like topiaries or shrublets.Professor Bruce Lyon and a former graduate student Alexis Chaine discovered that female lark buntings show strong preferences for certain traits in the males, but those preferences change from year to year. Their findings, published in the journal Science, show a surprising level of flexibility in the females, who enhance their nesting success by choosing mates with the right traits in any given year.Thompson Lab: A female Greya politella moth preparing to oviposit into a Lithophragma parviflorum flower that has been cut in half. Pollen from a visit to a previous flower is visible as a yellow ring at the base of the moth's abdomen.

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