Remora cranial vein morphology and its functional implications for attachment

Abstract Remora fishes adhere to, and maintain long-term, reversible attachment with, surfaces of varying roughness and compliance under wetted high-shear conditions using an adhesive disc that evolved from the dorsal fin spines typical of other fishes. Evolution of this complex hierarchical structu...

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Autores principales:	Brooke E. Flammang, Christopher P. Kenaley
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fe307ed800824e2698e19c191c918e2e
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spelling	oai:doaj.org-article:fe307ed800824e2698e19c191c918e2e2021-12-02T12:30:16ZRemora cranial vein morphology and its functional implications for attachment10.1038/s41598-017-06429-z2045-2322https://doaj.org/article/fe307ed800824e2698e19c191c918e2e2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06429-zhttps://doaj.org/toc/2045-2322Abstract Remora fishes adhere to, and maintain long-term, reversible attachment with, surfaces of varying roughness and compliance under wetted high-shear conditions using an adhesive disc that evolved from the dorsal fin spines typical of other fishes. Evolution of this complex hierarchical structure required extensive reorganization of the skull and fin spines, but the functional role of the soft tissues of the disc are poorly understood. Here I show that remora cranial veins are highly-modified in comparison to those of other vertebrates; they are transposed anteriorly and enlarged, and lie directly ventral to the disc on the dorsum of the cranium. Ancestrally, these veins lie inside the neurocranium, in the dura ventral to the brain, and return blood from the eyes, nares, and brain to the heart. Repositioning of these vessels to lie in contact with the ventral surface of the disc lamellae implies functional importance associated with the adhesive mechanism. The position of the anterior cardinal sinus suggests that it may aid in pressurization equilibrium during attachment by acting as a hydraulic differential.Brooke E. FlammangChristopher P. KenaleyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-5 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Brooke E. Flammang Christopher P. Kenaley Remora cranial vein morphology and its functional implications for attachment
description	Abstract Remora fishes adhere to, and maintain long-term, reversible attachment with, surfaces of varying roughness and compliance under wetted high-shear conditions using an adhesive disc that evolved from the dorsal fin spines typical of other fishes. Evolution of this complex hierarchical structure required extensive reorganization of the skull and fin spines, but the functional role of the soft tissues of the disc are poorly understood. Here I show that remora cranial veins are highly-modified in comparison to those of other vertebrates; they are transposed anteriorly and enlarged, and lie directly ventral to the disc on the dorsum of the cranium. Ancestrally, these veins lie inside the neurocranium, in the dura ventral to the brain, and return blood from the eyes, nares, and brain to the heart. Repositioning of these vessels to lie in contact with the ventral surface of the disc lamellae implies functional importance associated with the adhesive mechanism. The position of the anterior cardinal sinus suggests that it may aid in pressurization equilibrium during attachment by acting as a hydraulic differential.
format	article
author	Brooke E. Flammang Christopher P. Kenaley
author_facet	Brooke E. Flammang Christopher P. Kenaley
author_sort	Brooke E. Flammang
title	Remora cranial vein morphology and its functional implications for attachment
title_short	Remora cranial vein morphology and its functional implications for attachment
title_full	Remora cranial vein morphology and its functional implications for attachment
title_fullStr	Remora cranial vein morphology and its functional implications for attachment
title_full_unstemmed	Remora cranial vein morphology and its functional implications for attachment
title_sort	remora cranial vein morphology and its functional implications for attachment
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/fe307ed800824e2698e19c191c918e2e
work_keys_str_mv	AT brookeeflammang remoracranialveinmorphologyanditsfunctionalimplicationsforattachment AT christopherpkenaley remoracranialveinmorphologyanditsfunctionalimplicationsforattachment
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Remora cranial vein morphology and its functional implications for attachment

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