Morphological Diversity and Evolution of Jaw Morphologies in Zeiform Fishes (Teleostei, Paracanthopterygii).

IF 2.2 4区 生物学 Q2 BIOLOGY
Integrative Organismal Biology Pub Date : 2024-04-15 eCollection Date: 2024-01-01 DOI:10.1093/iob/obae011
J W Peters, K K Duclos, M V H Wilson, T C Grande
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引用次数: 0

Abstract

Zeiformes (dories, tinselfishes, and oreos) are primarily benthopelagic acanthomorph fishes, distributed between 50 and 1000 m depth on continental slopes and on flanks of oceanic islands and seamounts. Among the interesting morphological adaptations of zeiform fishes are their unique and highly protrusible jaws involving premaxillae with long ascending processes and a four-bar linkage, including mobile palatines that pivot on their posterior articulation. This adaptation for increased jaw protrusion has enabled zeiform fishes to capture elusive prey more efficiently and is arguably a major factor in their morphological diversity and evolutionary success. This study examines the evolution of zeiform jaw morphologies using 3D landmark-based multivariate morphometrics as well as phylomorphospace analysis. Results show that the descendants of the zeiform ancestor branched rapidly early in their history, retaining conservative jaw morphologies during this early branching, but subsequently strongly diverged in many of the resulting lineages. Results from this study are compared with earlier research based on overall body form, demonstrating that morphological variation within Zeiformes arose along at least two distinct trajectories: body form and jaw morphology. Variation among genera in body form is not associated with variation among the same genera in jaw morphology, and vice versa. Hypotheses to explain the apparent decoupling of body shape and jaw morphology are addressed along with avenues for further study to better understand the morphological evolution of these iconic fishes.

泽形目鱼类(远洋鱼类,副栉目)下颌形态的多样性和进化。
泽形目(多丽鱼、丁斯鱼和奥利斯鱼)主要是底栖棘皮动物,分布于水深 50 米至 1000 米的大陆坡以及大洋岛屿和海山的侧翼。泽形目鱼类有趣的形态适应性之一是其独特的、高度突出的颌,包括具有长上升突和四杆连杆的前颌,包括可移动的腭骨,这些腭骨可在其后关节上转动。这种增加颌突的适应性使颧形目鱼类能够更有效地捕捉难以捉摸的猎物,可以说这是它们形态多样性和进化成功的一个主要因素。本研究利用基于三维地标的多元形态计量学以及系统形态空间分析,研究了泽形目颌部形态的进化。结果表明,泽状祖先的后代在其历史早期迅速分化,在早期分化过程中保留了保守的颌骨形态,但随后在许多由此产生的世系中出现了强烈分化。这项研究的结果与早先基于整体身体形态的研究结果进行了比较,表明泽形目内部的形态变异至少是沿着两条不同的轨迹产生的:身体形态和颌骨形态。不同属之间身体形态的变异与同一属之间颚部形态的变异无关,反之亦然。本文提出了一些假设来解释体形和颌骨形态明显脱钩的现象,并提出了进一步研究的途径,以便更好地了解这些标志性鱼类的形态演化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
3.70
自引率
6.70%
发文量
48
审稿时长
20 weeks
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