Arthropod Structure & Development最新文献_第9页

Morphology of interommatidial sensilla of Discocephalini (Heteroptera: Pentatomidae: Discocephalinae) 蝶头虫的胞间感受器形态(异翅目:蝽科:蝶头虫科)

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101216

Breno Batista Campos , André Oliveira Correia , Luiz Alexandre Campos , José Antônio Marin Fernandes

{"title":"Morphology of interommatidial sensilla of Discocephalini (Heteroptera: Pentatomidae: Discocephalinae)","authors":"Breno Batista Campos , André Oliveira Correia , Luiz Alexandre Campos , José Antônio Marin Fernandes","doi":"10.1016/j.asd.2022.101216","DOIUrl":"10.1016/j.asd.2022.101216","url":null,"abstract":"<div>Interommatidial sensilla have been explored for their taxonomic value and other aspects in Diptera and Lepidoptera. In Heteroptera, Eurystethus is the only genus where these structures were examined in delimiting subgenera and species. This study investigates the presence, distribution, and morphology of interommatidial sensilla in Discocephalinae species and discusses the sensilla's value for cladistic and taxonomic appraisals. Twenty species of 18 genera were analyzed: 16 Discocephalini genera, one genus in Ochlerini, and one genus in Edessinae. Species' heads were observed from photographs taken with light microscopy (LM) and scanning electron microscopy (SEM). From these images, we identified eleven types of sensilla, classified into chaetica, trichoidea and coeloconica. In LM, only sensilla chaetica with a length of 40–100 μm were visible, present in six species. Under the SEM at least one type of sensillum was visible in 19 of the 20 species analyzed. No difference between the various kinds of sensilla were apparent between males and females or adults and nymphs of a given species. Both subgenera of Eurysthetus have the same type of sensillum (chaeticum type I), which suggests this is not a delimiting feature. We conclude that sensilla chaetica can be a valuable character to delimit groups of genera within Discocephalini.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101216"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9285339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Antennal and maxillary palp morphology, and sensillar equipment, of the spruce bark beetle predators, Medetera signaticornis and Medetera infumata (Diptera: Dolichopodidae) 云杉树皮甲虫捕食者——刺足螨和刺足螨的触须和上颌触须形态及感受器(双翅目:刺足螨科)

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101229

Maria Sousa , Rickard Ignell , Marc Pollet , Kristina K. Green , Paul G. Becher , Göran Birgersson

{"title":"Antennal and maxillary palp morphology, and sensillar equipment, of the spruce bark beetle predators, Medetera signaticornis and Medetera infumata (Diptera: Dolichopodidae)","authors":"Maria Sousa , Rickard Ignell , Marc Pollet , Kristina K. Green , Paul G. Becher , Göran Birgersson","doi":"10.1016/j.asd.2022.101229","DOIUrl":"10.1016/j.asd.2022.101229","url":null,"abstract":"<div>Many long-legged Medetera flies are natural enemies of bark beetle pests, which they detect using olfactory cues, likely through olfactory sensilla on the antennae and maxillary palps. Morphological characterisation of olfactory sensilla among insects can provide a basis for future taxonomic, phylogenetic or electrophysiological studies. Scanning electron microscopy was used to describe the morphology of olfactory organs and sensillar equipment of Medetera signaticornis and M. infumata. Three different olfactory sensillum types were found in both fly species, sensilla trichodea, s. basiconica and grooved pegs. Based on size and wall structure, s. trichodea and s. basiconica were categorised into different subtypes. Sharp-tipped curved s. trichodea, and small, large and thin s. basiconica were found on the antennal postpedicel of M. signaticornis adults, while grooved s. basiconica were found in M. infumata. The density of sharp-tipped long s. trichodea was significantly higher in males compared to females, and in M. signaticornis compared to M. infumata. Long-grooved s. basiconica were found grouped in a small pit on the maxillary palps of both species. Comparison of our results with the limited available ecological data suggests that differences in numbers of specific sensillum types may reflect adaptations related to olfactory-driven behaviours such as host seeking.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101229"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10742453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative morphology and ultrastructure of the labial gland among castes of Camponotus japonicus (Hymenoptera: Formicidae) 膜翅目:蚁科小蜂唇腺形态和超微结构的比较

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2023.101236

Liangliang Zhang , Ruoqing Ma , WenJing Xu , Johan Billen , Hong He

{"title":"Comparative morphology and ultrastructure of the labial gland among castes of Camponotus japonicus (Hymenoptera: Formicidae)","authors":"Liangliang Zhang , Ruoqing Ma , WenJing Xu , Johan Billen , Hong He","doi":"10.1016/j.asd.2023.101236","DOIUrl":"10.1016/j.asd.2023.101236","url":null,"abstract":"<div>The labial gland is a major exocrine gland in the thoracic cavity of ants, which is connected to the mouth area and opens at the base of the labium. The labial gland in the various castes and males of Camponotus japonicus were examined using dissection, light microscopy, scanning and transmission electron microscopy. Our findings reveal clear caste differences in the appearance of the labial gland, and suggest a relationship between gland structure and its behavioral role in queens, males and workers: queens possess the largest reservoir sac; males have the smallest; workers have abundant secretion droplets in the gland cells of the tubules; epithelial thickness of gland cells varies considerably between workers and reproductive ants. The apical cell region has a high density of microvilli and polymorphic mitochondria, whereas the central cell region is rich in rough endoplasmic reticulum (RER) which means its main secretions are proteinaceous compounds. We believe that the labial gland has a different function in the castes of C. japonicus: the gland of workers and queens may be used to feed the larvae; workers participate in trophallaxis in the nest, while the males are not involved in these activities. Calculations of the relative size of the labial gland for each caste and males indicated that minor workers have the relative highest developed labial gland, supporting a role in trophallaxis. In addition, we found a phenomenon of enlarged labial gland in minor workers, which accounted for almost 22%, but the reason for this is unknown.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101236"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9286805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aphagy and vestigial stylets in first-instar nymphs of Aradidae (Hemiptera, Heteroptera) 蛛科一龄若虫的噬体和花柱退化(半翅目，异翅目)

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101226

Roman Rakitov

{"title":"Aphagy and vestigial stylets in first-instar nymphs of Aradidae (Hemiptera, Heteroptera)","authors":"Roman Rakitov","doi":"10.1016/j.asd.2022.101226","DOIUrl":"10.1016/j.asd.2022.101226","url":null,"abstract":"<div>Aradidae are known for their remarkably long stylets, coiled at rest in the anterior part of the head. However, previous reports indicated that at least some species lacked stylets during the first nymphal instar. A more detailed examination of Aradus betulae 1st-instar nymphs showed that their mandibular and maxillary stylets are abnormally short, not coiled, improperly interlocked, and clearly non-functional. The anteclypeus is relatively small and its internal diverticulum, which accommodates the stylet coil in the older stages, is vestigial. In contrast, the labium, labrum, food canal, and associated structures and muscles, including protractors and retractors of the stylets, are all normally developed. First-instar nymphs of Aradidae are the first known Heteroptera with non-functional mouthparts. To explain this phenomenon, a hypothesis is proposed which links previously unexplained records of non-feeding (but endowed with regular, functional mouthparts) 1st-instar nymphs of various pentatomomorphan families with the special role of that stage in acquiring microbial gut symbionts. A presumed loss of symbionts in the ancestors of Aradidae may have led to reduction of the now useless stylets in the first instar, which retained aphagy, despite a spectacular elongation of stylets in the older, feeding instars.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101226"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10732895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Editorial for January ASD (Volume 72) 一月ASD社论(第72卷)

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101233

引用次数: 0

Anatomy of the miniature four-legged mite Achaetocoptes quercifolii (Arachnida: Acariformes: Eriophyoidea) 小型四足螨Achaetocoptes quercifolii的解剖(蛛形纲:鞘翅目:鞘翅目)

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2023.101235

Evgenia A. Propistsova , Anastasia A. Makarova , Philipp E. Chetverikov , Alexey A. Polilov

{"title":"Anatomy of the miniature four-legged mite Achaetocoptes quercifolii (Arachnida: Acariformes: Eriophyoidea)","authors":"Evgenia A. Propistsova , Anastasia A. Makarova , Philipp E. Chetverikov , Alexey A. Polilov","doi":"10.1016/j.asd.2023.101235","DOIUrl":"10.1016/j.asd.2023.101235","url":null,"abstract":"<div>Miniaturization is one of the important trends in the evolution of terrestrial arthropods. In order to study adaptations to microscopic sizes, the anatomy of the smallest insects was previously studied, but not the anatomy of the smallest mites. Some of the smallest mites are Eriophyidae. In this study we describe for the first time the anatomy of the mite Achaetocoptes quercifolii, which is about 115 μm long. For this purpose, we used light, scanning, and transmission electron microscopy and performed 3D reconstructions. The anatomy of A. quercifolii is compared with the anatomy of larger representatives of Eriophyoidea. Despite the small size of the studied species, there is no considerable simplification of its anatomy compared to larger four-legged mites. A. quercifolii has a number of miniaturization effects similar to those found in microinsects: a strong increase in the relative volume of the reproductive system, an increase in the relative volume of the brain, reduction in the number and size of cells of the nervous system. As in some larger four-legged mites, A. quercifolii undergoes midgut lysis at the stage of egg production. On the other hand, in A. quercifolii a greater number of opisthosomal muscles are preserved than in larger gall-forming four-legged mites.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101235"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9286804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Review of insect-inspired wing micro air vehicle 昆虫翼微型飞行器研究进展

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101225

Fa Song, Yongwei Yan, Jiyu Sun

引用次数: 2

Changes in growth and developmental timing in Manduca sexta when exposed to altered oxygen levels 当暴露于改变的氧气水平时，Manduca sexta生长和发育时间的变化

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101231

Sara M. Wilmsen, Edward M. Dzialowski

{"title":"Changes in growth and developmental timing in Manduca sexta when exposed to altered oxygen levels","authors":"Sara M. Wilmsen, Edward M. Dzialowski","doi":"10.1016/j.asd.2022.101231","DOIUrl":"10.1016/j.asd.2022.101231","url":null,"abstract":"<div>The effect of chronic oxygen exposure on growth and development of insects is an active field of research. It seeks to unravel the triggers and limitations to molting and growth across many insect groups, although even now there are gaps in our knowledge and inconsistencies that need to be addressed. The oxygen dependent induction of molting (ODIM) hypothesis states that the impetus for molting is triggered by the development of hypoxic tissue due to the rapid increase in mass coupled with the fixed nature of tracheal systems between molts. In this study, we raised Manduca sexta in three chronic oxygen treatments (10, 21, & 30% O2). We measured the mass of these insects throughout their larval development and as adults. We found that both hyperoxia and hypoxia had marked effects on size and developmental times. Hyperoxia exposure resulted in increased mass throughout development and into adulthood while increasing developmental times. Hypoxia also increased developmental time and decreased mass of adult moths. We show that pupation is a critical window for exposure to altered oxygen levels. This suggests that oxygen may play a role in affecting the timing of eclosion at the end of pupation.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101231"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10735683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A morphometric analysis of Thrips tabaci Lindeman species complex (Thysanoptera: Thripidae) 烟叶蓟马种复合体形态计量学分析(蓟翅目:蓟马科)

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101228

Saranda Musa , Márta Ladányi , Roberto Carlos Loredo Varela , József Fail

{"title":"A morphometric analysis of Thrips tabaci Lindeman species complex (Thysanoptera: Thripidae)","authors":"Saranda Musa , Márta Ladányi , Roberto Carlos Loredo Varela , József Fail","doi":"10.1016/j.asd.2022.101228","DOIUrl":"10.1016/j.asd.2022.101228","url":null,"abstract":"<div>The onion thrips, Thrips tabaci Lindeman, is a cryptic species complex of three distinct lineages: L1, L2, and T, which exhibit considerable variation in their biological and ecological traits. The most accurate method for their identification is based on molecular techniques. This study aimed to investigate the morphometric variation of T. tabaci cryptic species complex and to distinguish characters that may be useful in discriminating the lineages. For this purpose, morphometric measurements were performed on the eggs, newly hatched first instar larvae, and newly emerged adults. Our results revealed significant differences in egg size between the three lineages. Moreover, the PCA analysis conducted on morphometric measurements of the first instar larvae and adults showed that females of the T lineage are very well separated from the females of the L lineages in the adult stage but not in the first instar larval stage. The distinction between the females is partially congruent with the results of genetic studies. Moreover, our results indicate that adult sexual dimorphism with regard to size in L1 and T lineages is not mediated by the size of eggs and first instar larvae, and this may be due to the different growth rates of males and females.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101228"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10740947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phylogenetic implications based on an ultrastructural study with emphasis on the tracheal system of the compound eyes of three species of nymphalid butterflies 基于三种蛱蝶复眼气管系统超微结构研究的系统发育意义

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101230

Qing-Xiao Chen, Qi-Hui Lyu, Ying-Wu Chen, Yue-Qin Song

{"title":"Phylogenetic implications based on an ultrastructural study with emphasis on the tracheal system of the compound eyes of three species of nymphalid butterflies","authors":"Qing-Xiao Chen, Qi-Hui Lyu, Ying-Wu Chen, Yue-Qin Song","doi":"10.1016/j.asd.2022.101230","DOIUrl":"10.1016/j.asd.2022.101230","url":null,"abstract":"<div>Compound eyes are the prominent visual organs of insects and can provide valuable information for the reconstruction of insect phylogeny. Although the largest butterfly family (Nymphalidae) has been well defined, the infrafamilial phylogenetic relationships remain controversial hitherto. In the present study the ultrastructure of the compound eyes of three nymphalids Neptis beroe, Childrena zenobia, and Palaeonympha opalina was investigated using light and transmission electron microscopy in an attempt to seek potentially important phylogenetic characters. The compound eyes of the nymphalids share a tracheal system in a “1–4−8” branching pattern. The eight tracheal subbranches exhibit distinct distribution patterns along the basal retinula cell as follows: the tracheal subbranches of Palaeonympha opaline are close to the rhabdom in the distance from the distalmost part of the basal retinula cell to the rhabdom end, while those of N. beroe and C. zenobia are on the periphery of the retinula along almost the whole basal retinula cell and become close to the rhabdom just at the proximal end of the basal retinula cell. The tracheal structure of the three nymphalids is discussed for their potential phylogenetic implications.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101230"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10725453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0