为什么没有更多的食草昆虫种类?

IF 0.6 4区 生物学 Q4 ZOOLOGY Acta Zoologica Academiae Scientiarum Hungaricae Pub Date : 2021-05-19 DOI:10.17109/AZH.67.2.119.2021
T. Jermy, Á. Szentesi
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引用次数: 0

摘要

昆虫物种丰富度估计超过300万种,其中大约一半是草食性的。尽管有大量的物种和不同的生活史,草食性物种在植物消耗生物中的比例低于其可能由于限制其多样化的限制。这些因素包括生态因素,如模糊的种间竞争;解剖和生理限制,如神经限制和不能处理广泛的植物化感物质;系统发育约束,如生态位保守性;最重要的是,低水平的协同遗传变异是种系转换所必需的。这表明,多样化最终取决于我们所说的昆虫基因组多样化的内在趋势。为了支持上述观点,我们调查了寄主特异性的主要类型、寄主专门化的机制和限制、物种形成的可能途径以及有关昆虫多样化的假设。
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Why are there not more herbivorous insect species?
Insect species richness is estimated to exceed three million species, of which roughly half is herbivorous. Despite the vast number of species and varied life histories, the proportion of herbivorous species among plant-consuming organisms is lower than it could be due to constraints that impose limits to their diversification. These include ecological factors, such as vague interspecific competition; anatomical and physiological limits, such as neural limits and inability of handling a wide range of plant allelochemicals; phylogenetic constraints, like niche conservatism; and most importantly, a low level of concerted genetic variation necessary to a phyletic conversion. It is suggested that diversification ultimately depends on what we call the intrinsic trend of diversification of the insect genome. In support of the above, we survey the major types of host-specificity, the mechanisms and constraints of host specialization, possible pathways of speciation, and hypotheses concerning insect diversification.
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来源期刊
CiteScore
1.50
自引率
0.00%
发文量
26
审稿时长
>12 weeks
期刊介绍: Acta Zoologica Academiae Scientiarum Hungaricae publishes original works in the fields of animal taxonomy and systematics, zoogeography, animal ecology and behaviour, population biology, biodiversity studies and nature conservation problems of international interest. Short communications, check lists, catalogues or new species records for a given region are not in focus of the scope of the journal.
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