scholarly journals Single Sensillum Recordings for Locust Palp Sensilla Basiconica

10.3791/57863 ◽  
2018 ◽  
Author(s):  
Hongwei Li ◽  
Yinwei You ◽  
Long Zhang
Keyword(s):  
Sensilla Basiconica ◽  
Single Sensillum Recordings ◽  
Single Sensillum

Fine structure and neurophysiology of a gustatory sensillum on the ovipositors of Metasyrphus venablesi and Eupeodes volucris (Diptera: Syrphidae)

1982 ◽  
Vol 60 (12) ◽  
pp. 3187-3195 ◽  
Author(s):  
D. E. Hood Henderson
Keyword(s):  
Amino Acids ◽  
Fine Structure ◽  
Structural Study ◽  
Oxidation Product ◽  
Oviposition Site ◽  
Single Sensillum Recordings ◽  
Single Sensillum ◽  
Aphid Honeydew

A typical uniporous contact chemosensillum was identified on the ovipositor of two aphidophagous syrphids, Metasyrphus venablesi (Cn.) and Eupeodes volucris O.S. (Diptera: Syrphidae). Fine structural study of the sensillum of M. venablesi revealed one mechanosensitive and five chemosensitive neurons. Single sensillum recordings from both species showed ovipositor sensititivy to various compounds characteristic of the oviposition site including aphid honeydew, sucrose, the amino acids alanine and tryptophan, an oxidation product of tyrptophan (indoleacetaldehyde), and water.

scholarly journals Documentation and validation of chemosensory structures in antennae of Spodoptera litura (Fabricius) through Scanning Electron Microscope (SEM)

2019 ◽  
Author(s):  
R. Aruna ◽  
S. Jeyarani ◽  
S. Mohankumar ◽  
C. Durairaj
Keyword(s):  
Spodoptera Litura ◽  
Distal Portion ◽  
Apical Segment ◽  
Middle Region ◽  
Sensilla Basiconica ◽  
Male Antenna ◽  
Sensilla Trichodea ◽  
Sensillum Styloconicum ◽  
Typical Shape ◽  
Scanning Electron

The studies with SEM clearly depicted that the antenna of female was longer than male antenna. Five types of sensilla namely trichodea, chaetica, styloconica, coeloconica and auricillica, and scales were observed on the flagellum of both sexes. Sensilla trichodea were distributed randomly on all segments and were the most frequent type. Six sensilla chaetica were observed on each flagellar segment in both sexes, except in the apical segment. A sensillum styloconicum was always found at the upper-middle region of each flagellar subsegment. This sensillum had a smooth petiole and a conic extremity with one to three apical structures. Sensilla coeloconica were situated from middle to the distal portion of segment. Sensilla auricillica were found among the scales and had the typical shape of rabbit’s ear. Sensilla squamiformia were present on dorsal part of the antenna among scales. They were shorter and finer than scales and were embedded in a socket and point distally. Sensilla basiconica were smaller and least abundant of all sensilla.

Antennal Sensilla of Chrysis shanghalensis (Hymenoptera: Chrysididae), a Larval Ectoparasite of Monema flavescens (Lepidoptera: Limacodidae)

2021 ◽  
Vol 56 (1) ◽  
pp. 1-11
Author(s):  
Shu Z. Yang ◽  
Mei H. Yang ◽  
Yun Xu ◽  
Jin T. Zhang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Natural Enemy ◽  
Tree Species ◽  
External Morphology ◽  
Antennal Sensilla ◽  
Sensilla Basiconica ◽  
Sensilla Trichodea ◽  
Males And Females ◽  
Scanning Electron

Abstract Chrysis shanghalensis Smith (Hymenoptera: Chrysididae) is an ectoparasitoid and important natural enemy of Monema flavescens Walker (Lepidoptera: Limacodidae), a serious defoliator of a number of tree species. The external morphology of the antennal sensilla of this parasitoid was examined by scanning electron microscopy, and types and distribution of sensilla were recorded. The antennae of C. shanghalensis were geniculate in shape and composed of a scape with radicula, a pedicel, and a flagellum divided into 11 flagellomeres in males and females. Cuticular pore and 14 types of sensilla were identified on the antennae of both sexes. These included aporous Böhm's bristles, sensilla trichodea 1, 2, and 3 (nonporous), sensilla trichodea 4 (multiporous), two types of sensilla chaetica (nonporous), four morphological types of sensilla basiconica (multiporous), two morphological types of sensilla coeloconica (multiporous), and one type of sensillum campaniforme (nonporous).

scholarly journals Challenges in Modeling Pheromone Capture by Pectinate Antennae

2020 ◽  
Vol 60 (4) ◽  
pp. 876-885 ◽  
Author(s):  
Mourad Jaffar-Bandjee ◽  
Gijs Krijnen ◽  
Jérôme Casas
Keyword(s):  
Fluid Dynamics ◽  
Mass Transfer ◽  
Transfer Problem ◽  
Air Flow ◽  
Complex Objects ◽  
Single Sensillum ◽  
Mass Transfer Problem

Synopsis Insect pectinate antennae are very complex objects and studying how they capture pheromone is a challenging mass transfer problem. A few works have already been dedicated to this issue and we review their strengths and weaknesses. In all cases, a common approach is used: the antenna is split between its macro- and microstructure. Fluid dynamics aspects are solved at the highest level of the whole antenna first, that is, the macrostructure. Then, mass transfer is estimated at the scale of a single sensillum, that is, the microstructure. Another common characteristic is the modeling of sensilla by cylinders positioned transversal to the flow. Increasing efforts in faithfully modeling the geometry of the pectinate antenna and their orientation to the air flow are required to understand the major advantageous capture properties of these complex organs. Such a model would compare pectinate antennae to cylindrical ones and may help to understand why such forms of antennae evolved so many times among Lepidoptera and other insect orders.

Sign in / Sign up

Export Citation Format

Share Document