Neural organization of the second optic neuropil, the medulla, in the highly visual semiterrestrial crab Neohelice granulata
Crustaceans are widely distributed and inhabit very different niches. Many of them are highly visual animals. Nevertheless, the neural composition of crustacean optic neuropils deeper than the lamina is mostly unknown. In particular, semiterrestrial crabs possess a highly developed visual system and...
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2014
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219967_v522_n14_p3177_Sztarker http://hdl.handle.net/20.500.12110/paper_00219967_v522_n14_p3177_Sztarker |
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paper:paper_00219967_v522_n14_p3177_Sztarker2023-06-08T14:45:01Z Neural organization of the second optic neuropil, the medulla, in the highly visual semiterrestrial crab Neohelice granulata Sztarker, Julieta Tomsic, Daniel Arthropod Crustacean Golgi impregnation Insect Transmedullary cells adult animal behavior animal cell animal tissue article cell composition cell structure cell type comparative anatomy controlled study crab functional anatomy male medulla oblongata Neohelice granulata neuropil nonhuman optic nerve priority journal terrestrial species visual system anatomy and histology animal Brachyura cytology image processing medulla oblongata nerve cell neuropil optic nerve physiology silver staining ultrastructure Animals Brachyura Image Processing, Computer-Assisted Medulla Oblongata Neurons Neuropil Optic Nerve Silver Staining Visual Pathways Crustaceans are widely distributed and inhabit very different niches. Many of them are highly visual animals. Nevertheless, the neural composition of crustacean optic neuropils deeper than the lamina is mostly unknown. In particular, semiterrestrial crabs possess a highly developed visual system and display conspicuous visually guided behaviors. A previous study shows that the first optic neuropil, the lamina of the crab Neohelice granulata, possesses a surprisingly high number of elements in each cartridge. Here, we present a comprehensive description of individual elements composing the medulla of that same species. Using Golgi impregnation, we characterized a wide variety of cells. Only considering the class of transmedullary neurons, we describe over 50 different morphologies including small- and large-field units. Among others, we describe a type of centrifugal neuron hitherto not identified in other crustaceans or insects that probably feeds back information to every cartridge in the medulla. The possible functional role of such centrifugal elements is discussed in connection with the physiological and behavioral information on visual processing available for this crab. Taken together, the results reveal a very dense and complex neuropil in which several channels of information processing would be acting in parallel. We further examine our results considering the similarities and differences found between the layered organization and components of this crustacean medulla and the medullae of insects. © 2014 Wiley Periodicals, Inc. Fil:Sztarker, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tomsic, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219967_v522_n14_p3177_Sztarker http://hdl.handle.net/20.500.12110/paper_00219967_v522_n14_p3177_Sztarker |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Arthropod Crustacean Golgi impregnation Insect Transmedullary cells adult animal behavior animal cell animal tissue article cell composition cell structure cell type comparative anatomy controlled study crab functional anatomy male medulla oblongata Neohelice granulata neuropil nonhuman optic nerve priority journal terrestrial species visual system anatomy and histology animal Brachyura cytology image processing medulla oblongata nerve cell neuropil optic nerve physiology silver staining ultrastructure Animals Brachyura Image Processing, Computer-Assisted Medulla Oblongata Neurons Neuropil Optic Nerve Silver Staining Visual Pathways |
| spellingShingle |
Arthropod Crustacean Golgi impregnation Insect Transmedullary cells adult animal behavior animal cell animal tissue article cell composition cell structure cell type comparative anatomy controlled study crab functional anatomy male medulla oblongata Neohelice granulata neuropil nonhuman optic nerve priority journal terrestrial species visual system anatomy and histology animal Brachyura cytology image processing medulla oblongata nerve cell neuropil optic nerve physiology silver staining ultrastructure Animals Brachyura Image Processing, Computer-Assisted Medulla Oblongata Neurons Neuropil Optic Nerve Silver Staining Visual Pathways Sztarker, Julieta Tomsic, Daniel Neural organization of the second optic neuropil, the medulla, in the highly visual semiterrestrial crab Neohelice granulata |
| topic_facet |
Arthropod Crustacean Golgi impregnation Insect Transmedullary cells adult animal behavior animal cell animal tissue article cell composition cell structure cell type comparative anatomy controlled study crab functional anatomy male medulla oblongata Neohelice granulata neuropil nonhuman optic nerve priority journal terrestrial species visual system anatomy and histology animal Brachyura cytology image processing medulla oblongata nerve cell neuropil optic nerve physiology silver staining ultrastructure Animals Brachyura Image Processing, Computer-Assisted Medulla Oblongata Neurons Neuropil Optic Nerve Silver Staining Visual Pathways |
| description |
Crustaceans are widely distributed and inhabit very different niches. Many of them are highly visual animals. Nevertheless, the neural composition of crustacean optic neuropils deeper than the lamina is mostly unknown. In particular, semiterrestrial crabs possess a highly developed visual system and display conspicuous visually guided behaviors. A previous study shows that the first optic neuropil, the lamina of the crab Neohelice granulata, possesses a surprisingly high number of elements in each cartridge. Here, we present a comprehensive description of individual elements composing the medulla of that same species. Using Golgi impregnation, we characterized a wide variety of cells. Only considering the class of transmedullary neurons, we describe over 50 different morphologies including small- and large-field units. Among others, we describe a type of centrifugal neuron hitherto not identified in other crustaceans or insects that probably feeds back information to every cartridge in the medulla. The possible functional role of such centrifugal elements is discussed in connection with the physiological and behavioral information on visual processing available for this crab. Taken together, the results reveal a very dense and complex neuropil in which several channels of information processing would be acting in parallel. We further examine our results considering the similarities and differences found between the layered organization and components of this crustacean medulla and the medullae of insects. © 2014 Wiley Periodicals, Inc. |
| author |
Sztarker, Julieta Tomsic, Daniel |
| author_facet |
Sztarker, Julieta Tomsic, Daniel |
| author_sort |
Sztarker, Julieta |
| title |
Neural organization of the second optic neuropil, the medulla, in the highly visual semiterrestrial crab Neohelice granulata |
| title_short |
Neural organization of the second optic neuropil, the medulla, in the highly visual semiterrestrial crab Neohelice granulata |
| title_full |
Neural organization of the second optic neuropil, the medulla, in the highly visual semiterrestrial crab Neohelice granulata |
| title_fullStr |
Neural organization of the second optic neuropil, the medulla, in the highly visual semiterrestrial crab Neohelice granulata |
| title_full_unstemmed |
Neural organization of the second optic neuropil, the medulla, in the highly visual semiterrestrial crab Neohelice granulata |
| title_sort |
neural organization of the second optic neuropil, the medulla, in the highly visual semiterrestrial crab neohelice granulata |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219967_v522_n14_p3177_Sztarker http://hdl.handle.net/20.500.12110/paper_00219967_v522_n14_p3177_Sztarker |
| work_keys_str_mv |
AT sztarkerjulieta neuralorganizationofthesecondopticneuropilthemedullainthehighlyvisualsemiterrestrialcrabneohelicegranulata AT tomsicdaniel neuralorganizationofthesecondopticneuropilthemedullainthehighlyvisualsemiterrestrialcrabneohelicegranulata |
| _version_ |
1768542302628741120 |