Data/hora: 09/06/2024 05:47:21

Provedor de dados: 	5	
País: 	France	
Título: 	Oil gland and oil pores in billfishes: in search of a function	
Autores: 	Dhellemmes, F.; Hansen, M. J.; Bouet, S. D.; Videler, J. J.; Domenici, P.; Steffensen, J. F.; Hildebrandt, T.; Fritsch, G.; Bach, Pascal; Sabarros, Philippe; Krüger, A.; Kurvers, R. H. J. M.; Krause, J.	
Data: 	2020-10	
Ano: 	2020	
Palavras-chave: 	Comparative method; Functional morphology; Rostrum; Glandula oleofera; Rete lubricans; Fatty acids; Co-evolution.	
Resumo: 	Billfishes are well known for their distinctive elongated rostra, i.e. bills. The functional significance of billfish rostra has been frequently discussed and the recent discovery of an oil gland (glandula oleofera) at the base of the rostrum in swordfish, Xiphias gladius, has added an interesting facet to this discussion regarding the potential co-evolution of gland and rostra. Here, we investigated the oil gland and oil pores (through which the oil is brought to the skin surface) of four billfish species – swordfish, Atlantic blue marlin (Makaira nigricans), Indo-Pacific sailfish (Istiophorus platypterus) and striped marlin (Kajikia audax) – and provide detailed evidence for the presence of an oil gland in the last three. All four species had a high density of oil pores on the forehead which is consistent with the hypothesis of hydrodynamic benefits of the oil. The extension of the pores onto the front half of the rostrum in sailfish and striped marlin, but not in swordfish or blue marlin, suggests that the oil may have additional functions. One such function could be linked to the antibacterial and anti-inflammatory properties of the oil. However, the available evidence on predatory rostrum use (and hence the likelihood of tissue damage) is only partly consistent with the extension of pores on rostra across species. We conclude that the oil gland probably serves multiple, non-mutually exclusive functions. More detailed information on rostrum use in blue marlin and swordfish is needed to better link behavioural and morphological data with the aim of accomplishing a full comparative analysis.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00656/76805/77973.pdf

https://archimer.ifremer.fr/doc/00656/76805/83023.pdf

DOI:10.1242/jeb.224956

https://archimer.ifremer.fr/doc/00656/76805/	
Editor: 	The Company of Biologists	
Formato: 	application/pdf	
Fonte: 	Journal Of Experimental Biology (0022-0949) (The Company of Biologists), 2020-10 , Vol. 223 , N. 19 , P. jeb224956 (7p.)	
Fonte: 	info:eu-repo/semantics/openAccess

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