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Unraveling the morphological patterns of a subantarctic eelpout:a geometric morphometric approach

作     者:Fernanda S.ORREGO Mathias HÜNE Hugo A.BENÍTEZ Mauricio F.LANDAETA 

作者机构:Laboratorio de Ictiología e Interacciones Biofísicas(LABITI)Instituto de BiologíaFacultad de CienciasUniversidad de ValparaísoValparaísoChile Centro de Investigación para la Conservación de los Ecosistemas Australes(ICEA)Punta ArenasChile Laboratorio de Ecología y Morfometría EvolutivaCentro de Investigación de Estudios Avanzados del MauleUniversidad Católica del MauleTalcaChile Centro de Observación Marino para Estudios de Riesgos del Ambiente Costero(COSTA-R)Universidad de ValparaísoViña del MarChile Millennium Nucleus for Ecology and Conservation of Temperate Mesophotic Reef Ecosystems(NUTME) Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems(BASE)SantiagoChile 

出 版 物:《Integrative Zoology》 (整合动物学(英文版))

年 卷 期:2023年第18卷第2期

页      面:372-384页

核心收录:

学科分类:07[理学] 0707[理学-海洋科学] 

基  金:Specimens were captured under the Chilean legislation(Technical Memorandum P.INV N°224/2016 and N°E-2020-120 SUBPESCA) funded by the Chilean Antarctic Institute project INACH RT_08-18 grant to M.F.L.and project RED21992,Sistema articulado de investigación en Cambio Climático y Sustentabilidad en zonas costeras de Chile 

主  题:Austrolycus depressiceps geometric morphometrics morphology phenotype spatial distribution 

摘      要:Phenotypic variation in organisms depends on the genotype and the environmental constraints of the habitat that they ***,for marine species inhabiting contrasting aquatic conditions,it is expected tofind covari-ation between the shape and its spatial *** studied the morphology of the head and cephalic sensory canals of the eelpout Austrolycus depressiceps(4.5–22.5 cm TL)across its latitudinal distribution in South Pacific(45°S–55°S).Geometric morphometric analyses show that the shape varied from individuals with larger snout and an extended suborbital canal to individuals with shorter snouts and frontally compressed suborbital *** was size variation across the sampled populations,but that size does not have a clear latitudinal *** 8%of the shape variation relates to this size variation(allometry),represented by a decrease in the relative size of the eye,and a depression of the posterior margin of the *** were spatial differences in the shape of the head,but these differences were probably caused by allometric ***,2 of the canals of the cephalic lateralis pores and the head shape showed modularity in its *** study shows that the morphology of marinefish with a shallow distribution varies across distances of hundreds of kilometers(i.e.,phenotypic modulation).

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