Topography and connections of the telencephalon in a chondrostean, Acipenser baeri: An experimental study
Abstract Sturgeons belong to an ancient group of the extant actinopterygian fishes. Accordingly, the study of their brain connections is important to understand brain evolution in the line leading to teleosts. We examined the topography and connections of the various telencephalic regions of the Sib...
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crwiley:10.1002/cne.20977 2024-06-02T08:14:23+00:00 Topography and connections of the telencephalon in a chondrostean, Acipenser baeri: An experimental study Huesa, Gema Anadón, Ramón Yáñez, Julián 2006 http://dx.doi.org/10.1002/cne.20977 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcne.20977 https://onlinelibrary.wiley.com/doi/pdf/10.1002/cne.20977 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Comparative Neurology volume 497, issue 4, page 519-541 ISSN 0021-9967 1096-9861 journal-article 2006 crwiley https://doi.org/10.1002/cne.20977 2024-05-03T11:19:20Z Abstract Sturgeons belong to an ancient group of the extant actinopterygian fishes. Accordingly, the study of their brain connections is important to understand brain evolution in the line leading to teleosts. We examined the topography and connections of the various telencephalic regions of the Siberian sturgeon ( Acipenser baeri ). The telencephalic regions were characterized on the basis of acetylcholinesterase histochemistry and calbindin‐D28k and calretinin immunohistochemistry. The telencephalic connections were investigated by using the fluorescent dye DiI (1,1′‐dioctadecyl 3,3,3′,3′‐tetramethylindocarbocyanine perchlorate) in fixed brains. Application of DiI to different areas of the pallial (dorsal) regions of the telencephalic lobes showed that they have mostly intratelencephalic connections. A posterior pallial region is characterized by its similar hodology to that of the posterior zone of the teleosts dorsal telencephalon and those described in other ancient groups. Extratelencephalic connections of the pallium are scarce, although a few afferent and efferent connections with the diencephalon, mesencephalon, and rostral rhombencephalon were observed. DiI application to subpallial regions showed both intratelencephalic connections and connections with different brain regions. Afferents to the subpallium originate from the olfactory bulbs, preoptic area, thalamus, posterior tuberculum, hypothalamus, secondary gustatory nucleus, and raphe nuclei. Some of these connections are quite similar to those described for other vertebrates. J. Comp. Neurol. 497:519–541, 2006. © 2006 Wiley‐Liss, Inc. Article in Journal/Newspaper Siberian sturgeon Wiley Online Library Journal of Comparative Neurology 497 4 519 541 |
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Abstract Sturgeons belong to an ancient group of the extant actinopterygian fishes. Accordingly, the study of their brain connections is important to understand brain evolution in the line leading to teleosts. We examined the topography and connections of the various telencephalic regions of the Siberian sturgeon ( Acipenser baeri ). The telencephalic regions were characterized on the basis of acetylcholinesterase histochemistry and calbindin‐D28k and calretinin immunohistochemistry. The telencephalic connections were investigated by using the fluorescent dye DiI (1,1′‐dioctadecyl 3,3,3′,3′‐tetramethylindocarbocyanine perchlorate) in fixed brains. Application of DiI to different areas of the pallial (dorsal) regions of the telencephalic lobes showed that they have mostly intratelencephalic connections. A posterior pallial region is characterized by its similar hodology to that of the posterior zone of the teleosts dorsal telencephalon and those described in other ancient groups. Extratelencephalic connections of the pallium are scarce, although a few afferent and efferent connections with the diencephalon, mesencephalon, and rostral rhombencephalon were observed. DiI application to subpallial regions showed both intratelencephalic connections and connections with different brain regions. Afferents to the subpallium originate from the olfactory bulbs, preoptic area, thalamus, posterior tuberculum, hypothalamus, secondary gustatory nucleus, and raphe nuclei. Some of these connections are quite similar to those described for other vertebrates. J. Comp. Neurol. 497:519–541, 2006. © 2006 Wiley‐Liss, Inc. |
format |
Article in Journal/Newspaper |
author |
Huesa, Gema Anadón, Ramón Yáñez, Julián |
spellingShingle |
Huesa, Gema Anadón, Ramón Yáñez, Julián Topography and connections of the telencephalon in a chondrostean, Acipenser baeri: An experimental study |
author_facet |
Huesa, Gema Anadón, Ramón Yáñez, Julián |
author_sort |
Huesa, Gema |
title |
Topography and connections of the telencephalon in a chondrostean, Acipenser baeri: An experimental study |
title_short |
Topography and connections of the telencephalon in a chondrostean, Acipenser baeri: An experimental study |
title_full |
Topography and connections of the telencephalon in a chondrostean, Acipenser baeri: An experimental study |
title_fullStr |
Topography and connections of the telencephalon in a chondrostean, Acipenser baeri: An experimental study |
title_full_unstemmed |
Topography and connections of the telencephalon in a chondrostean, Acipenser baeri: An experimental study |
title_sort |
topography and connections of the telencephalon in a chondrostean, acipenser baeri: an experimental study |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1002/cne.20977 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcne.20977 https://onlinelibrary.wiley.com/doi/pdf/10.1002/cne.20977 |
genre |
Siberian sturgeon |
genre_facet |
Siberian sturgeon |
op_source |
Journal of Comparative Neurology volume 497, issue 4, page 519-541 ISSN 0021-9967 1096-9861 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/cne.20977 |
container_title |
Journal of Comparative Neurology |
container_volume |
497 |
container_issue |
4 |
container_start_page |
519 |
op_container_end_page |
541 |
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1800738220580798464 |