Document Type
Article
Publication Date
1-1-2016
Journal
Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas / Sociedade Brasileira de Biofisica ... [et al.]
Volume
49
Issue
1
First Page
5005
Last Page
5005
URL with Digital Object Identifier
10.1590/1414-431X20155005
Abstract
The semipalmated sandpiper Calidris pusilla and the spotted sandpiper Actitis macularia are long- and short-distance migrants, respectively. C. pusilla breeds in the sub-arctic and mid-arctic tundra of Canada and Alaska and winters on the north and east coasts of South America. A. macularia breeds in a broad distribution across most of North America from the treeline to the southern United States. It winters in the southern United States, and Central and South America. The autumn migration route of C. pusilla includes a non-stop flight over the Atlantic Ocean, whereas autumn route of A. macularia is largely over land. Because of this difference in their migratory paths and the visuo-spatial recognition tasks involved, we hypothesized that hippocampal volume and neuronal and glial numbers would differ between these two species. A. macularia did not differ from C. pusilla in the total number of hippocampal neurons, but the species had a larger hippocampal formation and more hippocampal microglia. It remains to be investigated whether these differences indicate interspecies differences or neural specializations associated with different strategies of orientation and navigation.
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This work is licensed under a Creative Commons Attribution 4.0 License.
Notes
Version of record available as:
Diniz, C.G., Magalhães, N.G.M., Sousa, A.A., Santos Filho, C., Diniz, D.G., Lima, C.M., Oliveira, M.A., Paulo, D.C., Pereira, P.D.C., Sherry, D.F. & Picanço, C.W. (2016). Microglia and neurons in the hippocampus of migratory sandpipers. Brazilian Journal of Medical and Biological Research 49, e5005. DOI: 10.1590/1414-431X20155005