The pineal complex: a morphological and immunohistochemical comparison between a tropical (Paracheirodon axelrodi) and a subtropical (Aphyocharax anisitsi) characid species

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Cardinal neon Paracheirodon axelrodi and bloodfin tetra Aphyocharax anisitsi are two species of characids with high trade value as ornamental fish in South America. Although both species inhabit middle water layers, cardinal neon exhibits a tropical distribution and bloodfin tetra a subtropical one....

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Detalles Bibliográficos
Autor principal: Pandolfi, Matías
Publicado: 2016
Materias:
characiformes
opsins
pineal complex
pinealocytes
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03622525_v277_n10_p1355_RinconCamacho
http://hdl.handle.net/20.500.12110/paper_03622525_v277_n10_p1355_RinconCamacho
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03622525_v277_n10_p1355_RinconCamacho
record_format dspace
spelling paper:paper_03622525_v277_n10_p1355_RinconCamacho2023-06-08T15:35:04Z The pineal complex: a morphological and immunohistochemical comparison between a tropical (Paracheirodon axelrodi) and a subtropical (Aphyocharax anisitsi) characid species Pandolfi, Matías characiformes opsins pineal complex pinealocytes Cardinal neon Paracheirodon axelrodi and bloodfin tetra Aphyocharax anisitsi are two species of characids with high trade value as ornamental fish in South America. Although both species inhabit middle water layers, cardinal neon exhibits a tropical distribution and bloodfin tetra a subtropical one. In this work, we carried out an anatomical, histological and immunohistochemical study of the pineal complex of P. axelrodi and A. anisitsi. In both species, the pineal complex consisted of three components, the pineal and parapineal organs and the dorsal sac (DS). The pineal organ was composed of a short, thin pineal stalk (PS), vertically disposed with respect to the upper surface of the telencephalon, and a pineal vesicle (PV), located at the distal end of the PS and attached to the skull by connective tissue. The pineal window (PW), a site in the skull where the luminal information accesses the pineal organ, appeared just above the latter structures. In the epidermis of P. axelrodi's PW, club cells were identified, but were not observed in the epidermis of A. anisitsi's one. With respect to the DS, it appeared to be folded on itself, and was bigger and more folded in A. anisitsi than in P. axelrodi. Immunohistochemical assays revealed the presence of cone opsin-like and rod opsin-like photoreceptor cells in the PS and PV. These results provide a first insight into the morphological assembly of the pineal complex of both species, and contribute to a better understanding of the integration and transduction of light stimuli in characids. J. Morphol. 277:1355–1367, 2016. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc. Fil:Pandolfi, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03622525_v277_n10_p1355_RinconCamacho http://hdl.handle.net/20.500.12110/paper_03622525_v277_n10_p1355_RinconCamacho
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic characiformes
opsins
pineal complex
pinealocytes
spellingShingle characiformes
opsins
pineal complex
pinealocytes
Pandolfi, Matías
The pineal complex: a morphological and immunohistochemical comparison between a tropical (Paracheirodon axelrodi) and a subtropical (Aphyocharax anisitsi) characid species
topic_facet characiformes
opsins
pineal complex
pinealocytes
description Cardinal neon Paracheirodon axelrodi and bloodfin tetra Aphyocharax anisitsi are two species of characids with high trade value as ornamental fish in South America. Although both species inhabit middle water layers, cardinal neon exhibits a tropical distribution and bloodfin tetra a subtropical one. In this work, we carried out an anatomical, histological and immunohistochemical study of the pineal complex of P. axelrodi and A. anisitsi. In both species, the pineal complex consisted of three components, the pineal and parapineal organs and the dorsal sac (DS). The pineal organ was composed of a short, thin pineal stalk (PS), vertically disposed with respect to the upper surface of the telencephalon, and a pineal vesicle (PV), located at the distal end of the PS and attached to the skull by connective tissue. The pineal window (PW), a site in the skull where the luminal information accesses the pineal organ, appeared just above the latter structures. In the epidermis of P. axelrodi's PW, club cells were identified, but were not observed in the epidermis of A. anisitsi's one. With respect to the DS, it appeared to be folded on itself, and was bigger and more folded in A. anisitsi than in P. axelrodi. Immunohistochemical assays revealed the presence of cone opsin-like and rod opsin-like photoreceptor cells in the PS and PV. These results provide a first insight into the morphological assembly of the pineal complex of both species, and contribute to a better understanding of the integration and transduction of light stimuli in characids. J. Morphol. 277:1355–1367, 2016. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.
author Pandolfi, Matías
author_facet Pandolfi, Matías
author_sort Pandolfi, Matías
title The pineal complex: a morphological and immunohistochemical comparison between a tropical (Paracheirodon axelrodi) and a subtropical (Aphyocharax anisitsi) characid species
title_short The pineal complex: a morphological and immunohistochemical comparison between a tropical (Paracheirodon axelrodi) and a subtropical (Aphyocharax anisitsi) characid species
title_full The pineal complex: a morphological and immunohistochemical comparison between a tropical (Paracheirodon axelrodi) and a subtropical (Aphyocharax anisitsi) characid species
title_fullStr The pineal complex: a morphological and immunohistochemical comparison between a tropical (Paracheirodon axelrodi) and a subtropical (Aphyocharax anisitsi) characid species
title_full_unstemmed The pineal complex: a morphological and immunohistochemical comparison between a tropical (Paracheirodon axelrodi) and a subtropical (Aphyocharax anisitsi) characid species
title_sort pineal complex: a morphological and immunohistochemical comparison between a tropical (paracheirodon axelrodi) and a subtropical (aphyocharax anisitsi) characid species
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03622525_v277_n10_p1355_RinconCamacho
http://hdl.handle.net/20.500.12110/paper_03622525_v277_n10_p1355_RinconCamacho
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AT pandolfimatias pinealcomplexamorphologicalandimmunohistochemicalcomparisonbetweenatropicalparacheirodonaxelrodiandasubtropicalaphyocharaxanisitsicharacidspecies
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