Presence of morphological integration and modularity of the forcipular apparatus in Lithobius melanops (Chilopoda: Lithobiomorpha: Lithobiidae)

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY Arthropod Structure & Development Pub Date : 2022-11-01 DOI:10.1016/j.asd.2022.101203
Vukica D. Vujić, Bojan S. Ilić, Luka R. Lučić, Zvezdana S. Jovanović, Jelena Z. Milovanović, Boris D. Dudić, Dalibor Z. Stojanović
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引用次数: 2

Abstract

The presence of morphological integration and modularity of the forcipular apparatus, despite its evolutionary significance, has not been analyzed in centipedes. This morphological structure has a crucial role in feeding and defense, thanks to its poisonous part (forcipules), which is important for catching the prey. The aims of our study were: i) to test the hypothesis of modularity of the forcipular apparatus in centipede Lithobius melanops; and ii) to investigate the influence of allometry on overall morphological integration in the aforementioned species using a geometric morphometric approach. The presence of fluctuating asymmetry was obtained by Procrustes ANOVA. Allometry was significant only for the symmetric component of the forcipular apparatus. The modularity hypothesis was not accepted, because the covariance coefficients for symmetric and asymmetric components were lower than 89.5% and 72.1% (respectively) of other RV coefficients obtained by a random contiguous partition of the forcipular apparatus. Results of the present study indicate that allometry does increase the level of morphological integration in the forcipular apparatus. According to our results, the forcipular coxosternite and forcipules could not be considered as separate modules; namely, they probably share similar developmental pathways and function in different forms of behavior and survival in L. melanops.

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黑石bius (Lithobius melanops)截骨器形态整合和模块化的存在(Chilopoda: Lithobiomorpha: Lithobiidae)
形态整合和模组化的存在,尽管其进化意义,尚未在蜈蚣中分析。这种形态结构在捕食和防御中起着至关重要的作用,这要归功于它的有毒部分(镊子),这对捕捉猎物很重要。本研究的目的是:1)验证蜈蚣截骨器的模块化假说;ii)利用几何形态计量学方法研究异速生长对上述物种整体形态整合的影响。波动不对称的存在通过Procrustes方差分析得到。异速生长仅对矢状器官的对称部分有显著意义。不接受模块化假设,因为对称和非对称分量的协方差系数分别低于其他随机连续划分的RV系数的89.5%和72.1%。本研究的结果表明,异速生长确实增加了分形器的形态整合水平。根据我们的研究结果,分镜孔洞和分镜孔洞不能看作是单独的模块;也就是说,它们可能共享相似的发育途径,并在不同形式的行为和生存中发挥作用。
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来源期刊
CiteScore
3.50
自引率
10.00%
发文量
54
审稿时长
60 days
期刊介绍: Arthropod Structure & Development is a Journal of Arthropod Structural Biology, Development, and Functional Morphology; it considers manuscripts that deal with micro- and neuroanatomy, development, biomechanics, organogenesis in particular under comparative and evolutionary aspects but not merely taxonomic papers. The aim of the journal is to publish papers in the areas of functional and comparative anatomy and development, with an emphasis on the role of cellular organization in organ function. The journal will also publish papers on organogenisis, embryonic and postembryonic development, and organ or tissue regeneration and repair. Manuscripts dealing with comparative and evolutionary aspects of microanatomy and development are encouraged.
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