International Journal of Insect Morphology and Embryology最新文献_第2页

Seasonal changes in the ovariuterus of female Scorpio maurus fuscus (Scorpiones; Scorpionidae), and the effect of higher temperature 雌性天蝎座卵巢子宫的季节变化蝎子科)，以及温度升高的影响

International Journal of Insect Morphology and Embryology Pub Date : 1999-10-01 DOI: 10.1016/S0020-7322(99)00035-5

Rivka Elias, M.R Warburg, Mira Rosenberg

{"title":"Seasonal changes in the ovariuterus of female Scorpio maurus fuscus (Scorpiones; Scorpionidae), and the effect of higher temperature","authors":"Rivka Elias, M.R Warburg, Mira Rosenberg","doi":"10.1016/S0020-7322(99)00035-5","DOIUrl":"10.1016/S0020-7322(99)00035-5","url":null,"abstract":"<div>Changes in the ovariuterus of Scorpio maurus fuscus during the period of one year, and under stressful thermal conditions, are described. The ovariuteri of most females in the population contained 1 generation of large, embryonic diverticulae (Ed) and variable numbers of small, bud-like rudimentary diverticulae (Rd) belonging to 3–5 generations. Most females contained 1 or 2 generations of degenerated (Dd), post-partum diverticulae, but some, probably virgins, lacked them. The latter females were significantly (P<0.05) smaller than the others. They also contained a significantly higher (P<0.0001) number of Rd than is usually found in the other females. Embryonic diverticulae (Ed) of females with 1 generation of Dd (Dd1) were significantly longer (P<0.05) than Ed of females with 2 generations of Dd (Dd1+Dd2). The numbers and dimensions of the various diverticulae changed during the year. Under stressful thermal condition, the total number of Dd increased, and these were considerably longer than those observed under normal ambient conditions.</div>","PeriodicalId":100701,"journal":{"name":"International Journal of Insect Morphology and Embryology","volume":"28 4","pages":"Pages 337-348"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0020-7322(99)00035-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86866221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Head morphology of 1st and 5th instar nymphs of Triatoma circummaculata and Triatoma rubrovaria (Hemiptera, Reduviidae) 环状斑马病和红斑斑马病1、5龄若虫头部形态(半翅目，斑马病科)

International Journal of Insect Morphology and Embryology Pub Date : 1999-10-01 DOI: 10.1016/S0020-7322(99)00038-0

João A. da Rosa , José M.S. Barata , Mario Cilense , Francisco M. Belda Neto

{"title":"Head morphology of 1st and 5th instar nymphs of Triatoma circummaculata and Triatoma rubrovaria (Hemiptera, Reduviidae)","authors":"João A. da Rosa , José M.S. Barata , Mario Cilense , Francisco M. Belda Neto","doi":"10.1016/S0020-7322(99)00038-0","DOIUrl":"10.1016/S0020-7322(99)00038-0","url":null,"abstract":"<div>Morphological structures of the head of 1st and 5th instar nymphs of Triatoma circummaculata and Triatoma rubrovaria were revealed by analysis using scanning electron microscopy (SEM). Differences between 1st and 5th instar nymphs of these two species were observed in the postocular callosity, the number of ommatidia and tapered hair, the small segment between antennal segments, the rostrum third segment and slit lines. These slit lines were different only in the 5th instar. Similarities observed were the presence of tapered hairs in the joints, and the type of sensilla in the antennal segments. Only the 1st instar shows anteclypeus and gena sensilla. The antennal segments comprise the following types of sensilla: basiconica, bristles type I, bristles type II, bristles type III, campaniformia, coeloconica, chemosensilla, placodea, trichobothria and trichoidea. We describe here for the first time six (3+3) sensilla basiconica on the dorsal portion of the first segment of the rostrum.</div>","PeriodicalId":100701,"journal":{"name":"International Journal of Insect Morphology and Embryology","volume":"28 4","pages":"Pages 363-375"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0020-7322(99)00038-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89908384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 32

Pericardial cell ultrastructure in the tobacco hornworm 烟草角虫心包细胞的超微结构

International Journal of Insect Morphology and Embryology Pub Date : 1999-10-01 DOI: 10.1016/S0020-7322(99)00029-X

Abbey C. Brockhouse , Harry T. Horner , Tim F. Booth , Bryony C. Bonning

引用次数: 6

Fine structure of the salivary glands of Heliothrips haemorrhoidalis (Bouché) (Thysanoptera: Thripidae) 痔疮黑蓟马(bouch<s:1>)唾液腺的精细结构(蓟翅目:蓟科)

International Journal of Insect Morphology and Embryology Pub Date : 1999-10-01 DOI: 10.1016/S0020-7322(99)00033-1

Giovanna Del Bene , Vittoria Cavallo , Pietro Lupetti , Romano Dallai

引用次数: 15

Secretory products of the Malpighian tubules of Cicadellidae (Hemiptera, Membracoidea): an ultrastructural study 蝉科(半翅目，膜总科)马氏小管分泌产物的超微结构研究

International Journal of Insect Morphology and Embryology Pub Date : 1999-07-01 DOI: 10.1016/S0020-7322(99)00023-9

R.A Rakitov

{"title":"Secretory products of the Malpighian tubules of Cicadellidae (Hemiptera, Membracoidea): an ultrastructural study","authors":"R.A Rakitov","doi":"10.1016/S0020-7322(99)00023-9","DOIUrl":"10.1016/S0020-7322(99)00023-9","url":null,"abstract":"<div>The middle segment of the Malpighian tubules (MT), specialized for secretion of proteins and lipids, was investigated by transmission electron microscopy in nymphs and adults of nine cicadellid species (Hemiptera, Cicadellidae). In addition, the external cuticle coated with secretory products of the MT was studied by scanning electron microscopy. The ultimate secretory product found in adult cicadellids, both in the MT and on the cuticle, were intricately structured particles known as brochosomes (BS). These showed significant differences in size, shape and internal structure among species studied. Common features of all BS were a bounding outer membrane and regular cell-like depressions on the surface. Nascent BS develop in numerous Golgi regions as secretory vesicles individually enclosed in larger vacuoles. Definitive structure of BS is acquired during the peculiar post-Golgian maturation. Two basic patterns of the secretion in the MT during ontogenesis were recognized. In Cicadella viridis (L.), Bathysmatophorus reuteri J. Shlb., Graphocraerus ventralis (Fall.) and Doratura impudica Horv. BS are produced and applied onto the cuticle in both adults and nymphs. In contrast, in young nymphs of Vilbasteana oculata (Ldb.), Populicerus nitidissimus (H.-S.), Oncopsis flavicollis (L.) and Ulopa reticulata (F.) the MT are involved in production of various secretions other than BS. The secretory cells in these species undergo a change switching to BS production in the last nymphal instar, so that the BS are applied onto the cuticle for the first time only in freshly molted adults. The secretory patterns differ among subfamilies. The observed diversity of products suggests that the protective water- or feces-repellent function proposed for BS cannot completely explain the adaptive significance of the secretory specialization of the MT in cicadellids.</div>","PeriodicalId":100701,"journal":{"name":"International Journal of Insect Morphology and Embryology","volume":"28 3","pages":"Pages 179-193"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0020-7322(99)00023-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88365720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 36

Neurons with dopamine-like immunoreactivity target mushroom body Kenyon cell somata in the brain of some hymenopteran insects 某些膜翅目昆虫脑内具有多巴胺样免疫反应的神经元靶向蘑菇体Kenyon细胞体

International Journal of Insect Morphology and Embryology Pub Date : 1999-07-01 DOI: 10.1016/S0020-7322(99)00025-2

Wolfgang Blenau , Manfred Schmidt , Daniel Faensen , Friedrich-Wilhelm Schürmann

{"title":"Neurons with dopamine-like immunoreactivity target mushroom body Kenyon cell somata in the brain of some hymenopteran insects","authors":"Wolfgang Blenau , Manfred Schmidt , Daniel Faensen , Friedrich-Wilhelm Schürmann","doi":"10.1016/S0020-7322(99)00025-2","DOIUrl":"10.1016/S0020-7322(99)00025-2","url":null,"abstract":"<div>The mushroom bodies of the insect brain are centers for olfactory and multimodal information processing and they are involved in associative olfactory learning. They are comprised of numerous (340,000 in the bee brain), small (3–8 μm soma diameter) local interneurons, the Kenyon cells. In the brain of honeybees (Apis mellifera) of all castes (worker bees, drones and queens), wasps (Vespula germanica) and hornets (Vespa crabro) immunostaining revealed fibers with dopamine-like immunoreactivity projecting from the pedunculus and the lip neuropil of the mushroom bodies into the Kenyon cell perikaryal layer. These fibers terminate with numerous varicosities, mainly around the border between medial and lateral Kenyon cell soma groups. Visualization of immunostained terminals in the transmission electron microscope showed that they directly contact the somata of the Kenyon cells and contain presynaptic elements. The somata of the Kenyon cells are clearly non-immunoreactive. Synaptic contacts at the somata are unusual for the central nervous systems of insects and other arthropods. This finding suggests that the somata of the Kenyon cells of Hymenoptera may serve an integrative role, and not merely a supportive function.</div>","PeriodicalId":100701,"journal":{"name":"International Journal of Insect Morphology and Embryology","volume":"28 3","pages":"Pages 203-210"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0020-7322(99)00025-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73149604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

Structure and function of seminal vesicles of Orthoptera Tettigonioidea 直翅目精囊的结构与功能

International Journal of Insect Morphology and Embryology Pub Date : 1999-07-01 DOI: 10.1016/S0020-7322(99)00022-7

Renata Viscuso, Lucia Narcisi, Lorenzo Sottile

引用次数: 27

Ontogenesis of hemocytes in the stick insect Bacillus rossius (Rossi) (Phasmatodea, Bacillidae) studied with an anti-hemocyte monoclonal antibody 用抗血细胞单克隆抗体研究了竹节虫芽孢杆菌(芽孢杆菌科)血细胞的形成

International Journal of Insect Morphology and Embryology Pub Date : 1999-07-01 DOI: 10.1016/S0020-7322(99)00020-3

S Meloni, M Mazzini, G Scapigliati

引用次数: 6

Differentiation of primordial germ cells during embryogenesis of Allacma fusca (L.) (Collembola: Symphypleona) 褐花Allacma fusca (L.)胚胎发生过程中原始生殖细胞的分化

International Journal of Insect Morphology and Embryology Pub Date : 1999-07-01 DOI: 10.1016/S0020-7322(99)00021-5

Jerzy Klag, Piotr Świa̧tek

{"title":"Differentiation of primordial germ cells during embryogenesis of Allacma fusca (L.) (Collembola: Symphypleona)","authors":"Jerzy Klag, Piotr Świa̧tek","doi":"10.1016/S0020-7322(99)00021-5","DOIUrl":"10.1016/S0020-7322(99)00021-5","url":null,"abstract":"<div>The youngest primordial germ cells (PGCs) of Allacma fusca (L.) (Collembola: Sminthuridae) can be identified in embryos at the blastoderm stage as scattered in the yolk mass. They are arranged in pairs connected via intercellular bridges and dispersed among the yolk granules over a relatively small area but they never form multicellular clusters. With progressing development, the mesoderm of the germ band differentiates, the PGCs migrate to the abdominal part of the germ band and enter among mesoderm cells making two clusters of cells in the left and right parts of the abdomen. The mesoderm cells neighbouring the PGC cluster differentiate into a one-layered gonad envelope and produce a thin basal lamina separating the gonad from the rest of the mesoderm. The PGCs are still connected in pairs. At the end of the embryonic development, the gonads have regular spherical shapes and are enclosed within the envelope built up by a layer of flat somatic cells. Now, the PGCs do not occur only in pairs, but chains of cells connected with a sequence of intercellular bridges can also be seen.</div>","PeriodicalId":100701,"journal":{"name":"International Journal of Insect Morphology and Embryology","volume":"28 3","pages":"Pages 161-168"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0020-7322(99)00021-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75225770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Structural and ultrastructural studies of Anticarsia gemmatalis midgut cells infected with the baculovirus A. gemmatalis nucleopolyhedrovirus 杆状病毒多角体病毒感染生殖抗虫中肠细胞的结构和超微结构研究

International Journal of Insect Morphology and Embryology Pub Date : 1999-07-01 DOI: 10.1016/S0020-7322(99)00024-0

Tatiana G.T. Matos, Lilian G. Giugliano, Bergmann M. Ribeiro, Sônia N. Báo

{"title":"Structural and ultrastructural studies of Anticarsia gemmatalis midgut cells infected with the baculovirus A. gemmatalis nucleopolyhedrovirus","authors":"Tatiana G.T. Matos, Lilian G. Giugliano, Bergmann M. Ribeiro, Sônia N. Báo","doi":"10.1016/S0020-7322(99)00024-0","DOIUrl":"10.1016/S0020-7322(99)00024-0","url":null,"abstract":"<div>Anticarsia gemmatalis is a lepidopteran insect susceptible to A. gemmatalis nucleopolyhedrovirus (AgNPV), which is being used in a large scale, in Brazil, as a biological control agent against this serious soybean pest. Baculovirus usually infects its insect host through the midgut epithelium. In the midgut, it replicates in the nuclei of epithelial cells, producing progeny virus and establishing systemic infection. The AgNPV infection of A. gemmatalis midgut was studied using light and electron microscopy. It was observed that AgNPV enters the midgut mainly through columnar cells. Although the virus was not found in the nuclei of columnar cells until late on infection, it is believed that these cells are the primary sites of infection and replication. This fact can be explained by the continuous regeneration of the midgut epithelium. Besides, the infection may be occurring in isolated cells, making it more difficult to be visualized by electron microscopy. At 48 h post infection, hemocytes and tracheoblasts are infected and polyhedra are formed later in these cells, which are the secondary sites of infection.</div>","PeriodicalId":100701,"journal":{"name":"International Journal of Insect Morphology and Embryology","volume":"28 3","pages":"Pages 195-201"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0020-7322(99)00024-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81584489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17