Morphology and Distribution of the Antennal Sensilla of Two Species, Megalurothrips usitatus and Thrips palmi (Thysanoptera: Thripidae)

Wang, Xiaoshuang; Ali, Shaukat; Han, Yun Jae; Yang, Bo; Tang, Liangde; Wu, Jing

doi:10.3390/insects10080251

Cited by 11 publications

(10 citation statements)

References 18 publications

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“…Insects have multiple types of mechanoreceptors and other sensilla on body appendages like legs or antenna [1][2][3][4][5][6][7]. The neuronal innervation pattern shows the organization of motor nerves and muscles [8,9] or sensory nerves and their relation to different sensory organs in insect legs [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Neuronal Innervation of the Subgenual Organ Complex and the Tibial Campaniform Sensilla in the Stick Insect Midleg

Strauß

2020

Insects

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Mechanosensory organs in legs play are crucial receptors in the feedback control of walking and in the detection of substrate-borne vibrations. Stick insects serve as a model for the physiological role of chordotonal organs and campaniform sensilla. This study documents, by axonal tracing, the neural innervation of the complex chordotonal organs and groups of campaniform sensilla in the proximal tibia of the midleg in Sipyloidea sipylus. In total, 6 nerve branches innervate the different sensory structures, and the innervation pattern associates different sensilla types by their position. Sensilla on the anterior and posterior tibia are innervated from distinct nerve branches. In addition, the variation in innervation is studied for five anatomical branching points. The most common variation is the innervation of the subgenual organ sensilla by two nerve branches rather than a single one. The fusion of commonly separated nerve branches also occurred. However, a common innervation pattern can be demonstrated, which is found in >75% of preparations. The variation did not include crossings of nerves between the anterior and posterior side of the leg. The study corrects the innervation of the posterior subgenual organ reported previously. The sensory neuroanatomy and innervation pattern can guide further physiological studies of mechanoreceptor organs and allow evolutionary comparisons to related insect groups.

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Section: Introductionmentioning

confidence: 99%

Neuronal Innervation of the Subgenual Organ Complex and the Tibial Campaniform Sensilla in the Stick Insect Midleg

Strauß

2020

Insects

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“…Antennal sensilla act as external “receivers” to accurately receive environmental signals from a variety of distances, then triggering a complexity of behaviors as response. The morphology of the receptors at different developmental stages in Thysanoptera have been reported previously [ 24 , 26 , 27 , 29 , 30 , 43 ], but their functions were mostly unknown [ 28 , 31 ]. Noteworthy, a high degree of morphological and positional similarities were found in the antennal sensilla of Thripidae, making it reasonable to hypothesize that sensilla sharing similar morphological characteristics may execute same functions in signal perception [ 44 , 45 ].…”

Section: Discussionmentioning

confidence: 97%

“…Therefore, it is not defined as a functional receptor in this paper. Microtrichia was the most abundant structures on the antenna, also acting as a derivative structure of the cuticular widely distributed on flagellum I-IV [ 24 , 27 , 28 ].…”

Section: Discussionmentioning

confidence: 99%

“…Compared to most Lepidoptera and Coleoptera species, thrips are micro-insects with antenna of only about 300 nm long, difficult for research. Thus far, the ultrastructure of the antennae has only been demonstrated in a few thrip species [ 24 , 26 , 27 , 28 , 29 , 30 , 31 ], not including the three ( O. loti , M. distalis , and S. Kaszabi ) presented in this study. Despite that all these three are alfalfa feeders; O. loti is the major pest of alfalfa in China.…”

Section: Introductionmentioning

confidence: 89%

“…Images were annotated using Adobe Photoshop CC2018. Terminology usage and classification of antennal sensilla follow previous work by Snodgrass [ 20 , 41 ], Schneider [ 21 ], Zacharuk [ 42 ], Facci [ 31 ], Li [ 26 ], Zhu [ 28 ], Wang [ 27 ], and Hu [ 24 ].…”

Section: Methodsmentioning

confidence: 99%

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Morphology and Distribution of Antennal Sensilla in Three Species of Thripidae (Thysanoptera) Infesting Alfalfa Medicago sativa

Liu

Ban

2021

Insects

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Thrips are important pests to alfalfa Medicago sativa. Similar as many other plant-feeding insects, thrips rely on the antennae to receive chemical signals in the environment to locate their hosts. Previous studies indicated that sensilla of different shapes on the surface of insect antenna play an important role in signal recognition. However, morphological analysis of the antennal sensilla in Thysanoptera has been limited to only a few species. To expand the understanding of how antennal sensilla are related to semiochemical detection in thrips, here we compared the morphology and distribution of antennal sensilla in three thrip species, Odontothrips loti, Megalurothrips distalis, and Sericothrips kaszabi, by scanning electron microscope (SEM). The antennae of these three species are all composed of eight segments and share similar types of sensilla which distribute similarly in each segment, despite that their numbers show sexual dimorphism. Specifically, nine major types of sensilla in total were found, including three types of sensilla basiconica (SBI, SBII, and SBIII), two types of sensilla chaetica (SChI and SChII), and one type for each of sensilla coeloconica (SCo), sensilla trichodea (ST), sensilla campaniformia (SCa), and sensilla cavity (SCav). The potential functions of sensilla were discussed according to the previous research results and will lay a morphological foundation for the study of the olfactory mechanism of three species of thrips.

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Effect of ultraviolet on the environmental adaptability of Megalurothrips usitatus (Thysanoptera: Thripidae)

Jin,

Wang,

Jiang

et al. 2024

Arch Insect Biochem Physiol

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Megalurothrips usitatus Bagnall, an important pest of bean plants, is primarily managed with synthetic insecticides. M. usitatus has developed considerable resistance to various insecticides in multiple cowpea‐growing areas in Hainan Province, China, posing challenges to its control in the field. Light control technology is a potentially effective physical control method for M. usitatus. The vision of thrips is highly sensitive to UV light, whereas other biological characteristics remain unknown. Therefore, this study evaluated the effects of ultraviolet light on the biological characteristics of M. usitatus. Results showed that the egg, larval, and pupal stages of M. usitatus were significantly shortened, and the emergence rate (79.59%) and adult survival rate (77.95%) were reduced under a devoid of UV light environment (UV−), compared with the full‐spectrum light (control treatment group, CK) (p < 0.05). However, the single spawning quantity and total amount of spawning were significantly higher, and the sex ratio (57%) was the highest under UV− (p < 0.05). Single UV light (UV+) only affected the pupation rate. Also, the antioxidant enzymes, polyphenol oxidase, superoxide dismutase (SOD), and peroxidase activities were significantly and negatively correlated with the progression of generations under UV−, whereas catalase and SOD activities were significantly and positively correlated with the progression of generations under UV+. The UV− light conditions significantly interfered with the behavior selection of M. usitatus. The results of this study showed that the adaptability of M. usitatus populations would be greatly reduced in the absence of ultraviolet light, providing a theoretical basis for the control of M. usitatus populations.

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Morphology and Distribution of the Antennal Sensilla of Two Species, Megalurothrips usitatus and Thrips palmi (Thysanoptera: Thripidae)

Cited by 11 publications

References 18 publications

Neuronal Innervation of the Subgenual Organ Complex and the Tibial Campaniform Sensilla in the Stick Insect Midleg

Neuronal Innervation of the Subgenual Organ Complex and the Tibial Campaniform Sensilla in the Stick Insect Midleg

Morphology and Distribution of Antennal Sensilla in Three Species of Thripidae (Thysanoptera) Infesting Alfalfa Medicago sativa

Effect of ultraviolet on the environmental adaptability of Megalurothrips usitatus (Thysanoptera: Thripidae)

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