Nacionalni inštitut za biologijo Vas vabi, da se udeležite predavanja: "The subgenual organ complex in orthopteroid insects: a hotspot for mechanosensory organ diversification",
Nacionalni inštitut za biologijo Vas vabi, da se udeležite predavanja:
"The subgenual organ complex in orthopteroid insects: a hotspot for mechanosensory organ diversification",
ki ga bo predstavil
dr. Johannes Strauss,
Institute for Animal Physiology, Integrative Sensory Physiology, Justus-Liebig Universität, Giessen, Germany.
Predavanje bo potekalo v ponedeljek 21.9.2015 ob 14.00 uri, v Biološkem središču, Večna pot 111, v Ljubljani, v predavalnici B3.
Povzetek predavanja: Chordotonal or scolopidial organs are mechanosensors which occur in great diversity in the insect body, and they detect internal stimuli like stretch, or external stimuli like vibration or sound.
An important vibration detector is the so-called subgenual organ, located in the leg of many insects. This seminar will consider the diversity of organs in the subgenual organ complex and their evolution in insects like stick insects, locusts, or cave crickets.
Neuroanatomy shows the diversification of mechanosensors in these insect groups, which suggests a differentiation of functions, like tuning to different vibration frequencies. Considering the evolutionary relationships within orthopteroid insects, highly ordered sensilla in linear arrangement evolved repeatedly.
In addition, axonal tracing allows to distinguish groups of neurons within one organ, or show small organs like the accessory organ, which has been neglected in several lineages. Neuroanatomy of the different organs may thus also guide physiological approaches.
Comparative neuroanatomy highlights that the subgenual organ complex was repeatedly modified and extended. This makes the orthopteroid insects a group suitable to study the sensory evolution of insect mechanosensors.
Predavanje bo potekalo v angleškem jeziku.