Olfactory coding in the mosquito antennal lobe: labeled lines or combinatorial code?

IF 5.8 1区农林科学 Q1 BIOLOGY

Current opinion in insect science Pub Date : 2024-11-14 DOI:10.1016/j.cois.2024.101299

Abin Thomas, Madhurima Roy, Nitin Gupta

引用次数: 0

Abstract

Odors serve as important cues for many behaviors in mosquitoes, including host-seeking, foraging, and oviposition. They are detected by olfactory receptor neurons present on the sensory organs, whose axons take this signal to the antennal lobe, the first olfactory processing center in the insect brain. We review the organization and the functioning of the antennal lobe in mosquitoes, focusing on two populations of interneurons present there: the local neurons (LNs) and the projection neurons (PNs). LNs enable information processing in the antennal lobe by providing lateral inhibition and excitation. PNs carry the processed output to downstream neurons in the lateral horn and the mushroom body. We compare the ideas of labeled lines and combinatorial codes, and argue that the PN population encodes odors combinatorially. Throughout this review, we discuss the observations from Aedes, Anopheles, and Culex mosquitoes in the context of previous findings from Drosophila and other insects.

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蚊子触角叶的嗅觉编码：标记线还是组合代码？

气味是蚊子许多行为的重要线索，包括寻找宿主、觅食和产卵。它们被感觉器官上的嗅觉受体神经元检测到，这些神经元的轴突将信号传到触角叶，即昆虫大脑中的第一个嗅觉处理中心。我们回顾了蚊子触角叶的组织和功能，重点是其中的两个中间神经元群：局部神经元（LN）和投射神经元（PN）。局部神经元通过提供横向抑制和兴奋来实现触角叶的信息处理。投射神经元将处理后的输出传给外侧角和蘑菇体的下游神经元。我们比较了标记线和组合编码的观点，认为PN群对气味进行组合编码。在这篇综述中，我们结合果蝇和其他昆虫以前的发现，讨论了伊蚊、按蚊和库蚊的观察结果。

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

Current opinion in insect science BIOLOGYECOLOGYENTOMOLOGY-ECOLOGY

CiteScore

10.40

自引率

1.90%

发文量

113

期刊介绍： Current Opinion in Insect Science is a new systematic review journal that aims to provide specialists with a unique and educational platform to keep up–to–date with the expanding volume of information published in the field of Insect Science. As this is such a broad discipline, we have determined themed sections each of which is reviewed once a year. The following 11 areas are covered by Current Opinion in Insect Science. -Ecology -Insect genomics -Global Change Biology -Molecular Physiology (Including Immunity) -Pests and Resistance -Parasites, Parasitoids and Biological Control -Behavioural Ecology -Development and Regulation -Social Insects -Neuroscience -Vectors and Medical and Veterinary Entomology There is also a section that changes every year to reflect hot topics in the field. Section Editors, who are major authorities in their area, are appointed by the Editors of the journal. They divide their section into a number of topics, ensuring that the field is comprehensively covered and that all issues of current importance are emphasized. Section Editors commission articles from leading scientists on each topic that they have selected and the commissioned authors write short review articles in which they present recent developments in their subject, emphasizing the aspects that, in their opinion, are most important. In addition, they provide short annotations to the papers that they consider to be most interesting from all those published in their topic over the previous year.