蚱蜢(直翅目:蝼蛄科)臼齿形态的种间和种内变异:对食性生态学的影响。

IF 2.9 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Royal Society Open Science Pub Date : 2024-10-16 eCollection Date: 2024-10-01 DOI:10.1098/rsos.240596
Michael A Berthaume, Matthew J Morley
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引用次数: 0

摘要

与许多哺乳动物一样,蚱蜢(蚱蜢亚目)使用臼齿状结构进行咀嚼。尽管对哺乳动物进行了数十年的研究,但人们对蚱蜢臼齿的形态以及它与蚱蜢进食生物力学、饮食、饮食生态学和进化之间的关系知之甚少。在这里,我们开发了一种量化臼齿形态的方法,并将其应用于两种不同食性的远缘蚱蜢(Phymateus saxosus,7只雌性;Valanga nigricornis,7只雌性,11只雄性)。我们的研究表明,臼齿形状存在可量化的差异,这可能与饮食有关。在臼齿形状上,雌性和雄性的左右臼齿都存在一些差异,而在臼齿大小上也存在显著差异,这可能与鳞片脱落有关。与哺乳动物一样,臼齿磨损也会导致臼齿形状的巨大差异。臼齿形状的物种差异与哺乳动物臼齿功能形态的预期不符。牙齿地形分析是量化蚱蜢臼齿形态的一个很有前途的新途径,与传统的二维显微镜方法相比具有明显的优势,有望揭示蚱蜢的生物学、生物力学和进化方面的许多问题。
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Interspecific and intraspecific variation in grasshopper (Orthoptera: Acrididea) molar form: implications for dietary ecology.

Like many mammals, grasshoppers (infraorder Acrididea) chew using molariform structures. Despite decades of research on mammals, little is known about grasshopper molar form and how it relates to grasshopper feeding biomechanics, diet, dietary ecology and evolution. Here, we develop a method for quantifying molar form and apply it to two species of distantly related grasshoppers with different diets (Phymateus saxosus, seven females; Valanga nigricornis, seven females, 11 males). We show that there are quantifiable differences in molar form, potentially related to diet. There are some differences in molar shape between left and right molars in both species and sexes, and significant differences in molar size, potentially due to scaling. Like in mammals, molar wear can cause large differences in molar shape. Species differences in molar shape did not match what was expected based on mammalian molar functional morphology. Dental topographic analysis is a promising new avenue for quantifying molar form in grasshoppers and a distinct advantage over traditional two-dimensional microscopy methods, and promises to reveal much about the biology, biomechanics and evolution of Acrididea.

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来源期刊
Royal Society Open Science
Royal Society Open Science Multidisciplinary-Multidisciplinary
CiteScore
6.00
自引率
0.00%
发文量
508
审稿时长
14 weeks
期刊介绍: Royal Society Open Science is a new open journal publishing high-quality original research across the entire range of science on the basis of objective peer-review. The journal covers the entire range of science and mathematics and will allow the Society to publish all the high-quality work it receives without the usual restrictions on scope, length or impact.
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