Oil gland and oil pores in billfishes: in search of a function

Autor: Félicie Dhellemmes, A. Krüger, G. Fritsch, Matthew J. Hansen, P. S. Sabarros, Jens Krause, T. Hildebrandt, P. Bach, Ralf H. J. M. Kurvers, John F. Steffensen, Paolo Domenici, S. D. Bouet, John J. Videler
Přispěvatelé: CNR Institute for Coastal Marine Environment (IAMC), Consiglio Nazionale delle Ricerche (CNR), Institut Photovoltaïque d’Ile-de-France (UMR) (IPVF), École polytechnique (X)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-TOTAL FINA ELF-EDF (EDF)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Photovoltaïque d’Ile-de-France (ITE) (IPVF)-Air Liquide [Siège Social], Institut de Recherche pour le Développement (IRD), MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD)
Rok vydání: 2020
Předmět:
Zdroj: Journal Of Experimental Biology (0022-0949) (The Company of Biologists), 2020-10, Vol. 223, N. 19, P. jeb224956 (7p.)
Journal of Experimental Biology
Journal of Experimental Biology, The Company of Biologists, 2020, 223 (19), ⟨10.1242/jeb.224956⟩
Dhellemmes, F, Hansen, M J, Bouet, S D, Videler, J J, Domenici, P, Steffensen, J F, Hildebrandt, T, Fritsch, G, Bach, P, Sabarros, P S, Krüger, A, Kurvers, R H J M & Krause, J 2020, ' Oil gland and oil pores in billfishes : in search of a function ', The Journal of Experimental Biology, vol. 223, jeb224956 . https://doi.org/10.1242/jeb.224956
ISSN: 1477-9145
0022-0949
DOI: 10.1242/jeb.224956⟩
Popis: © 2020. Published by The Company of Biologists Ltd. 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.
Databáze: OpenAIRE
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