Title

Variation in GABA-Immunoreactive Neurons Across Three Stylommatomorpha Gastropods

Date

6-1-2017 11:00 AM

End Time

1-6-2017 1:00 PM

Location

WUC Pacific Room

Department

Biology

Session Chair

Jeff Snyder

Session Chair

Michael Baltzley

Session Title

The Kenneth M. Walker Scholarship in Biology poster Session

Faculty Sponsor(s)

Michael Baltzley

Presentation Type

Poster session

Abstract

There is typically little variation in the structure of nervous systems of closely related species, but there is often variation in the size, number, and location of individual neurons. To explore the variation of nervous systems among several gastropod species, GABA-immunoreactive (GABA-IR) cells were identified in the grey field slug Deroceras reticulatum. GABA-IR cells were chosen in order to compare results to previously unpublished data from the garden snail Cornu aspersum and the scarlett-backed taildropper slug Prophysaon vanattae. All three species are gastropods in the clade Stylommatomorpha and are found in the Pacific Northwest. We expected to find same number of GABA-IR neuron clusters across the different species but also expected to find that the number of cells within those clusters varied across species. In all three species, GABA-IR clusters were found in both the cerebral ganglia and in the fused pedal, plural, visceral and parietal ganglia. Buccal ganglia tended to have individual GABA-IR cells rather than clusters. An analysis of the number of GABA-IR neurons in the various ganglia will also be presented.

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Jun 1st, 11:00 AM Jun 1st, 1:00 PM

Variation in GABA-Immunoreactive Neurons Across Three Stylommatomorpha Gastropods

WUC Pacific Room

There is typically little variation in the structure of nervous systems of closely related species, but there is often variation in the size, number, and location of individual neurons. To explore the variation of nervous systems among several gastropod species, GABA-immunoreactive (GABA-IR) cells were identified in the grey field slug Deroceras reticulatum. GABA-IR cells were chosen in order to compare results to previously unpublished data from the garden snail Cornu aspersum and the scarlett-backed taildropper slug Prophysaon vanattae. All three species are gastropods in the clade Stylommatomorpha and are found in the Pacific Northwest. We expected to find same number of GABA-IR neuron clusters across the different species but also expected to find that the number of cells within those clusters varied across species. In all three species, GABA-IR clusters were found in both the cerebral ganglia and in the fused pedal, plural, visceral and parietal ganglia. Buccal ganglia tended to have individual GABA-IR cells rather than clusters. An analysis of the number of GABA-IR neurons in the various ganglia will also be presented.