Tuesday, April 10, 2012
7:30 PM
Consequences of multiple species invasions: a native butterfly confronts exotic plants and parasitoids
MCZ 101, 26 Oxford Street, Harvard University
Dr. Frances Chew
Frances Chew, Professor of Ecology, Tufts University
Exotic invasive species pose challenges to native species encountering them
for the first time. In the 1800s, the native mustard white butterfly flew
in Harvard Yard. Since then it has been affected by serial invasions of
garlic mustard, parasitoid biological control agents for the related
cabbage white butterfly, and other exotic plant species. Despite its
current threatened status in Massachusetts, the ecological stage is now set
for recovery and population growth of this butterfly – an unintended
consequence of recent species introductions.
The talk is free and open to the public. The meeting is readily accessible via public transportation. Parking is available in the Oxford Street Garage with advance arrangement, as described here, or (usually but not always) at spaces on nearby streets. Everyone is also welcome to join us for dinner before the talk (beginning at 6:00 PM) at Cambridge Common restaurant.
CEC meetings are held the second Tuesday of the month from October through May. The evening schedule typically includes an informal dinner (6:00 to 7:15 PM) followed by our formal meeting (7:30 – 9:00 PM). The latter begins with club business and is followed by a 50 minute entomology related presentation. Membership is open to amateur and professional entomologists.
Tuesday, March 13, 2012
7:30 PM
Pretty and poisonous: the role of plant defenses in flowers
MCZ 101, 26 Oxford Street, Harvard University
Lynn Adler
Dr. Lynn Adler,Associate Professor, Department of Plant, Soil and Insect Science, UMass Amherst
The role of chemicals in mediating plant-animal interactions in flowers is relatively unexplored. Flowers act as signals for pollinators, but may also be used by unwelcome guests such as nectar robbers, flower eaters, and seed predators. If leaves and flowers both contain defensive chemicals, it may be difficult for plants to facilitate pollination and also maintain plant defenses. Exposure to defensive chemicals in pollen and nectar has the potential to affect pollinator health. Considering the role of floral defenses will provide a more in-depth understanding of how such traits evolve, and their consequences for population dynamics of both plants and insects.
The talk is free and open to the public. The meeting is readily accessible via public transportation. Parking is available in the Oxford Street Garage with advance arrangement, as described here, or (usually but not always) at spaces on nearby streets. Everyone is also welcome to join us for dinner before the talk (beginning at 6:15 PM) meeting at the Caspersen Student Center cafeteria, if you are late we may be at Cambridge Commons this month.
CEC meetings are held the second Tuesday of the month from October through May. The evening schedule typically includes an informal dinner (6:15 to 7:15 PM) followed by our formal meeting (7:30 – 9:00 PM). The latter begins with club business and is followed by a 50 minute entomology related presentation. Membership is open to amateur and professional entomologists.
