Neuroscience Program Seminar

Speaker

Charles Derby

Georgia State University

Title

Chemical Communication in Affiliation, Aggression, and Mating of Decapod Crustaceans

Abstract

Decapod crustaceans such as lobsters and crabs have highly organized peripheral and central chemosensory systems. One of these systems is a sophisticated olfactory sense mediated by aesthetasc sensilla on their first pair of antennae, whose sensors connect to the olfactory lobes in the brain. I will discuss four examples of the use of this olfactory sense in detecting chemical signals that help decapods solve daily problems in their lives. Three examples are from the Caribbean spiny lobster, Panulirus argus, which is a social species that often lives in aggregations during the day and forages at night. These behaviors are gregarious sheltering based on conspecific urine signals, alarm responses mediated by conspecific blood, and modulation of aggression during social interactions using urine-based social signals. The fourth topic is the use of sex pheromones in courtship and mating in blue crabs, Callinectes sapidus. Our experimental approach is that of neuroecology, which includes identifying bioactive compounds, studying how these cues are used in modulating behavior, detailing the sensory and neural basis for these behaviors, and understanding how evolution shapes these processes.

Host

Dr. Heather Eisthen

Location

Thursday, November 29, 2018 at 12:30pm

1425 BPS

 

This seminar is also available for viewing in room 1102 A & B Grand Rapids Research Center