Microglia and neurons in the hippocampus of migratory sandpipers

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 i...

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Main Authors: C.G. Diniz, N.G.M. Magalhães, A.A. Sousa, C. Santos Filho, D.G. Diniz, C.M. Lima, M.A. Oliveira, D.C. Paulo, P.D.C. Pereira, D.F. Sherry, C.W. Picanço-Diniz
Format: Article
Language:English
Published: Associação Brasileira de Divulgação Científica 2016-01-01
Series:Brazilian Journal of Medical and Biological Research
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000100603&lng=en&tlng=en
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author C.G. Diniz
N.G.M. Magalhães
A.A. Sousa
C. Santos Filho
D.G. Diniz
C.M. Lima
M.A. Oliveira
D.C. Paulo
P.D.C. Pereira
D.F. Sherry
C.W. Picanço-Diniz
author_facet C.G. Diniz
N.G.M. Magalhães
A.A. Sousa
C. Santos Filho
D.G. Diniz
C.M. Lima
M.A. Oliveira
D.C. Paulo
P.D.C. Pereira
D.F. Sherry
C.W. Picanço-Diniz
author_sort C.G. Diniz
collection DOAJ
description 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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spelling doaj.art-5f0a14fde27f42be89d35eafaf0401f52022-12-21T20:14:31ZengAssociação Brasileira de Divulgação CientíficaBrazilian Journal of Medical and Biological Research1414-431X2016-01-0149110.1590/1414-431X20155005S0100-879X2016000100603Microglia and neurons in the hippocampus of migratory sandpipersC.G. DinizN.G.M. MagalhãesA.A. SousaC. Santos FilhoD.G. DinizC.M. LimaM.A. OliveiraD.C. PauloP.D.C. PereiraD.F. SherryC.W. Picanço-DinizThe 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000100603&lng=en&tlng=enHippocampusNeuronsMicrogliaShorebirdsStereologyMorphometry
spellingShingle C.G. Diniz
N.G.M. Magalhães
A.A. Sousa
C. Santos Filho
D.G. Diniz
C.M. Lima
M.A. Oliveira
D.C. Paulo
P.D.C. Pereira
D.F. Sherry
C.W. Picanço-Diniz
Microglia and neurons in the hippocampus of migratory sandpipers
Brazilian Journal of Medical and Biological Research
Hippocampus
Neurons
Microglia
Shorebirds
Stereology
Morphometry
title Microglia and neurons in the hippocampus of migratory sandpipers
title_full Microglia and neurons in the hippocampus of migratory sandpipers
title_fullStr Microglia and neurons in the hippocampus of migratory sandpipers
title_full_unstemmed Microglia and neurons in the hippocampus of migratory sandpipers
title_short Microglia and neurons in the hippocampus of migratory sandpipers
title_sort microglia and neurons in the hippocampus of migratory sandpipers
topic Hippocampus
Neurons
Microglia
Shorebirds
Stereology
Morphometry
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000100603&lng=en&tlng=en
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