Arthropod Structure & Development最新文献_第10页

Larvae of two parasitic barnacles, Parasacculina pilosella (Van Kampen et Boschma, 1925) (Rhizocephala: Polyascidae) and Sacculina pugettiae Shiino, 1943 (Rhizocephala: Sacculinidae) studied by scanning electron microscopy 用扫描电子显微镜研究了两种寄生藤壶的幼虫，即毛囊副藤壶(paracculina pilosella, Van Kampen et Boschma, 1925) (rhizocephae: Polyascidae)和粗藤壶(Sacculina pugettiae Shiino, 1943) (rhizocephae: sacculinae)

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101227

Darya D. Golubinskaya, Olga M. Korn

{"title":"Larvae of two parasitic barnacles, Parasacculina pilosella (Van Kampen et Boschma, 1925) (Rhizocephala: Polyascidae) and Sacculina pugettiae Shiino, 1943 (Rhizocephala: Sacculinidae) studied by scanning electron microscopy","authors":"Darya D. Golubinskaya, Olga M. Korn","doi":"10.1016/j.asd.2022.101227","DOIUrl":"10.1016/j.asd.2022.101227","url":null,"abstract":"<div>The complete larval development of Parasacculina pilosella (Van Kampen et Boschma, 1925) and Sacculina pugettiae Shiino, 1943 including five naupliar stages and one cypris stage is described and illustrated using SEM. P. pilosella and S. pugettiae have a sacculinid type of development. Nauplii possess a naupliar eye, short frontolateral horns with terminal processes, and a ventral process between the furcal rami. Larvae lack a flotation collar, seta 6 on the antennule and a seta on the antennal basis. Cyprids have a nearly straight LO2. Breakage zone and a spinous process are present only in male larvae. Nauplii of the two species differ by the morphology of the furca: in P. pilosella, the furcal rami are longer and not drowned into cuticular sockets. Naupliar antenna of S. pugettiae has a lateral seta on the endopod which is lacking in P. pilosella. Dorsal head shield setae 1 and 2a are present in S. pugettiae nauplii and not found in P. pilosella larvae. In P. pilosella, all dorsal setae have subterminal pores, whereas in S. pugettiae, pores of the setae 2 are shifted proximally. It is possible that the presence/absence of setae 1 and 2a is the distinctive feature of nauplii of the families Sacculinidae and Polyascidae.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101227"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10723847","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

Morphology of male and female reproductive systems in the ground beetle Apotomus and the peculiar sperm ultrastructure of A. rufus (P. Rossi, 1790) (Coleoptera, Carabidae) 土甲虫(Apotomus)雌雄生殖系统的形态及A. rufus (P. Rossi, 1790)奇特的精子超微结构(鞘翅目，步甲科)

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101217

R. Antonio Gomez , David Mercati , Pietro Lupetti , Paolo P. Fanciulli , Romano Dallai

{"title":"Morphology of male and female reproductive systems in the ground beetle Apotomus and the peculiar sperm ultrastructure of A. rufus (P. Rossi, 1790) (Coleoptera, Carabidae)","authors":"R. Antonio Gomez , David Mercati , Pietro Lupetti , Paolo P. Fanciulli , Romano Dallai","doi":"10.1016/j.asd.2022.101217","DOIUrl":"10.1016/j.asd.2022.101217","url":null,"abstract":"<div>Relatively few studies have focused on evolutionary losses of sexually selected male traits. We use light and electron microscopy to study the male and female reproductive anatomy of Apotomus ground beetles (Coleoptera, Carabidae), a lineage that we reconstruct as likely having lost sperm conjugation, a putative sexually selected trait. We pay particular attention to the structure of the testes and spermatheca. Both of these organs share a strikingly similar shape–consisting of long blind canals arranged into several concentric overlapping rings measuring approximately 18 mm and 19.5 mm in total length, respectively. The similarity of these structures suggests a positive evolutionary correlation between female and male genital organs. Males are characterized by unifollicular testes with numerous germ cysts, which contain 64 sperm cells each, and we record a novel occurrence of sperm cyst “looping”, a spermatogenic innovation previously only known from some fruit fly and Tenebrionid beetle sperm. The sperm are very long (about 2.7 mm) and include an extraordinarily long helicoidal acrosome, a short nucleus, and a long flagellum. These findings confirm the structural peculiarity of sperm, testis, and female reproductive tract (FRT) of Apotomus species relative to other ground beetles, which could possibly be the result of shifts in sexual selection.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101217"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10735134","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: 2

Fine structure of the posterior midgut in the mite Anystis baccarum (L.) 沙螨后中肠的精细结构

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101218

Svetlana Filimonova

{"title":"Fine structure of the posterior midgut in the mite Anystis baccarum (L.)","authors":"Svetlana Filimonova","doi":"10.1016/j.asd.2022.101218","DOIUrl":"10.1016/j.asd.2022.101218","url":null,"abstract":"<div>Homology of the posterior midgut regions (PMG) in different phylogenetic lineages of acariform mites (superorder Acariformes) remains unresolved. In the order Trombidiformes, the ultrastructure of the PMG is known primarily in derived groups; thus this study focuses on species belonging to a relatively basal trombidiform family.PMG of Anystis baccarum consists of the colon and postcolon separated by a small intercolon. The fine structure of the colon and postcolon is close to that of the corresponding organs of sarcoptiform mites with the epithelium showing absorptive and endocytotic activity. The epithelial cells produce a variety of excretory vacuoles and a peritrophic matrix around the feces. Morover, the epithelium of the postcolon is characterized by the highest apical brush border and especially numerous mitochondria suggesting involvement in water and ion absorption. The intercolon functions as a sphincter lined with an epithelium capable of producing excretory granules. A pair of short blind extensions arises assimmetrically from the intercolon into the body cavity. Ultrastructurally, these extensions are similar to the arachnid Malpighian tubules and may be their reduced version. Rare endocrine-like cells have been observed in the colon and postcolon.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 ","pages":"Article 101218"},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10740904","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

Myoblast proliferation during flight muscle development in Manduca sexta is unaffected by reduced neural signaling 在飞行肌发育过程中成肌细胞增殖不受神经信号减少的影响

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2023-01-01 DOI: 10.1016/j.asd.2022.101232

J. Clark Ludwig, Barry Trimmer

引用次数: 0

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，六角曼杜卡生长和发育时间的变化。

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2022-12-24 DOI: 10.2139/ssrn.4217283

S. Wilmsen, E. Dzialowski

{"title":"Changes in growth and developmental timing in Manduca sexta when exposed to altered oxygen levels.","authors":"S. Wilmsen, E. Dzialowski","doi":"10.2139/ssrn.4217283","DOIUrl":"https://doi.org/10.2139/ssrn.4217283","url":null,"abstract":"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.","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"72 1","pages":"101231"},"PeriodicalIF":2.0,"publicationDate":"2022-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47530947","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

Morphology and ultrastructure of the prepharyngeal and pharyngeal glands in the ant Camponotus japonicus 日本冠蚁咽前腺和咽前腺的形态和超微结构

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2022-11-01 DOI: 10.1016/j.asd.2022.101212

Wenjing Xu , Guoyun Zhang , Liangliang Zhang , Xiaolei Wang , Johan Billen , Hong He

{"title":"Morphology and ultrastructure of the prepharyngeal and pharyngeal glands in the ant Camponotus japonicus","authors":"Wenjing Xu , Guoyun Zhang , Liangliang Zhang , Xiaolei Wang , Johan Billen , Hong He","doi":"10.1016/j.asd.2022.101212","DOIUrl":"10.1016/j.asd.2022.101212","url":null,"abstract":"<div>The prepharyngeal gland (prePG) and pharyngeal gland (PG) make up the largest exocrine structures in the head of the ant Camponotus japonicus. We used microscopy to study the histological and ultrastructural features of both glands in different castes. The number of secretory units in the prePG is considerably higher than in other ant species and shows a complex duct system which is made up by duct cells, secondary ducts and a main duct. These lead the secretions of hundreds to thousands of secretory cells into the prepharynx through a modified sieve plate at each side. The glove-shaped PG shows clear caste differences in tubule number. The ultrastructure of both the prePG and PG shows abundant mitochondria and secretion vesicles. Moreover, the prePG is loaded with rough endoplasmic reticulum (RER) which means its main secretions are proteinaceous compounds, while the PG is dominated by smooth endoplasmic reticulum (SER) which means the main secretions are lipids. The morphological differences like cell number of the prePG and tubule number of the PG indicate different secretory abilities of each caste. We for the first time introduce histology-based relative size to indicate secretory activity. The proportionally high development of the prePG in minor workers supports a role in trophallaxis.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"71 ","pages":"Article 101212"},"PeriodicalIF":2.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40650974","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

Larval and adult digestive tract of the carrion beetle Oxelytrum discicolle (Brullé, 1840) (Coleoptera: Silphidae) 腐尸甲虫Oxelytrum discicolle (brull<s:1>， 1840)的幼虫和成虫消化道(鞘翅目:Silphidae)

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2022-11-01 DOI: 10.1016/j.asd.2022.101213

Alessandra Santana Batista Toni , Verônica Saraiva Fialho , Jamile Fernanda Silva Cossolin , José Eduardo Serrão

{"title":"Larval and adult digestive tract of the carrion beetle Oxelytrum discicolle (Brullé, 1840) (Coleoptera: Silphidae)","authors":"Alessandra Santana Batista Toni , Verônica Saraiva Fialho , Jamile Fernanda Silva Cossolin , José Eduardo Serrão","doi":"10.1016/j.asd.2022.101213","DOIUrl":"10.1016/j.asd.2022.101213","url":null,"abstract":"<div>Oxelytrum discicolle is a necrophagous beetle occurring in Central and South America, with potential use in forensic entomology for investigations in the context of legal medicine. The present work aimed to describe the morphology of the digestive tract of larvae and adults and contributes to the knowledge about the digestion associated with necrophagy. In the three larval instars, the foregut is short and narrow, the midgut is a dilated tube, elongated with a smooth surface, and the hindgut is narrow and long, with small lateral projections and a dilated terminal region. The gut epithelium in the second and third instar larvae is vacuolated in the mid- and hindgut, with high production of apocrine secretions in the midgut lumen. In adults, the foregut is short, with small spines in the cuticular intima that covers the flattened epithelium. The midgut is dilated, with many short gastric caeca with regenerative cells in the blind portion, which differentiate in digestive columnar cells towards the midgut lumen. The hindgut is long and narrow, with an enlarged distal portion with folded epithelium lined by a thin cuticle. The histochemical tests reveal the absence of protein storage granules in the gut epithelium of larvae and adults. The gut characteristics of the carrion beetle O. discicolle are similar to those of other predatory and phytophagous Coleoptera, which may indicate that ancestry may influence the alimentary canal morphology more than the feeding habits.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"71 ","pages":"Article 101213"},"PeriodicalIF":2.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33495161","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: 2

Morphology and evolution of the mesopleuron in Bethylidae (Hymenoptera: Chrysidoidea) mapped on a molecular phylogeny 膜翅目:姬蜂科中膜蜂的形态与进化

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2022-11-01 DOI: 10.1016/j.asd.2022.101214

Chirlei D. de Brito , Geane de O. Lanes , Celso O. Azevedo

{"title":"Morphology and evolution of the mesopleuron in Bethylidae (Hymenoptera: Chrysidoidea) mapped on a molecular phylogeny","authors":"Chirlei D. de Brito , Geane de O. Lanes , Celso O. Azevedo","doi":"10.1016/j.asd.2022.101214","DOIUrl":"10.1016/j.asd.2022.101214","url":null,"abstract":"<div>The mesopleuron of Bethylidae has morphostructural characters that remain poorly understood, explored, and defined. The wide range of variability of this sclerite has generated confusion both in taxonomic and cladistic studies. Aiming to solve this issue, we describe the general mesopleural anatomy of Bethylidae. Our goal is to propose primary homologies by matching external and internal structures (muscles and apodemes). We reconstruct the ancestral state of the main mesopleural structures by applying the maximum-likelihood method on ten selected character states. The phylogeny of Bethylidae is built by analyzing a dataset of COI and 28S sequences, using maximum-likelihood and Bayesian inference methods. The Bethylidae and all subfamilies are recovered as monophyletic in both resulting phylogenies, with high clade support values. Although the two analyses yielded similar results, we used the tree resulting from the Bayesian inference to map the evolution of the morphological characters, as it is better supported. The study of mesopleural anatomy allows exploration and discussion of the evolution of characters and their present states in Bethylidae and Hymenoptera in general. Reconstruction of the ancestral states shows that many characters arose independently in Bethylidae subfamilies.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"71 ","pages":"Article 101214"},"PeriodicalIF":2.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40455584","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: 2

Pleopodal lung development in a terrestrial isopod, Porcellio scaber (Oniscidea) 陆生等足动物多足肺的发育

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2022-11-01 DOI: 10.1016/j.asd.2022.101210

Naoto Inui, Ryosuke Kimbara, Haruka Yamaguchi, Toru Miura

{"title":"Pleopodal lung development in a terrestrial isopod, Porcellio scaber (Oniscidea)","authors":"Naoto Inui, Ryosuke Kimbara, Haruka Yamaguchi, Toru Miura","doi":"10.1016/j.asd.2022.101210","DOIUrl":"10.1016/j.asd.2022.101210","url":null,"abstract":"<div>During evolution, various lineages of arthropods colonized land and independently acquired air-breathing organs. Some taxa of oniscidean isopods (Crustacea, Isopoda, Oniscidea) are the most successful crustacean lineages on land and possess organs called “lungs” or “pseudotrachea” for air-breathing in their abdominal appendages, i.e., in pleopods. Although these lungs are important for adapting to the terrestrial environment, their developmental process has not yet been elucidated. In the present study, we investigated the process of lung development in Porcellio scaber, the common rough woodlouse with pleopodal lungs in the first two pairs of pleopods. The lungs in the second pleopods developed at the manca 1 stage (immediately after hatching) and became functional at the manca 2 stage. In the first pleopods, which appear at the manca 3 stage, the lungs were gradually developed during the manca 3 stage and became functional in post-manca juveniles. In the second pleopods, epithelial invaginations led to lung development. These results suggest that some novel developmental mechanisms with epithelial invaginations and cuticle formation were acquired during terrestrialization, resulting in the development of functional lungs in the terrestrial isopod lineages.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"71 ","pages":"Article 101210"},"PeriodicalIF":2.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33492199","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: 2

Presence of morphological integration and modularity of the forcipular apparatus in Lithobius melanops (Chilopoda: Lithobiomorpha: Lithobiidae) 黑石bius (Lithobius melanops)截骨器形态整合和模块化的存在(Chilopoda: Lithobiomorpha: Lithobiidae)

IF 2 3区农林科学

Arthropod Structure & Development Pub Date : 2022-11-01 DOI: 10.1016/j.asd.2022.101203

Vukica D. Vujić, Bojan S. Ilić, Luka R. Lučić, Zvezdana S. Jovanović, Jelena Z. Milovanović, Boris D. Dudić, Dalibor Z. Stojanović

{"title":"Presence of morphological integration and modularity of the forcipular apparatus in Lithobius melanops (Chilopoda: Lithobiomorpha: Lithobiidae)","authors":"Vukica D. Vujić, Bojan S. Ilić, Luka R. Lučić, Zvezdana S. Jovanović, Jelena Z. Milovanović, Boris D. Dudić, Dalibor Z. Stojanović","doi":"10.1016/j.asd.2022.101203","DOIUrl":"10.1016/j.asd.2022.101203","url":null,"abstract":"<div>The presence of morphological integration and modularity of the forcipular apparatus, despite its evolutionary significance, has not been analyzed in centipedes. This morphological structure has a crucial role in feeding and defense, thanks to its poisonous part (forcipules), which is important for catching the prey. The aims of our study were: i) to test the hypothesis of modularity of the forcipular apparatus in centipede Lithobius melanops; and ii) to investigate the influence of allometry on overall morphological integration in the aforementioned species using a geometric morphometric approach. The presence of fluctuating asymmetry was obtained by Procrustes ANOVA. Allometry was significant only for the symmetric component of the forcipular apparatus. The modularity hypothesis was not accepted, because the covariance coefficients for symmetric and asymmetric components were lower than 89.5% and 72.1% (respectively) of other RV coefficients obtained by a random contiguous partition of the forcipular apparatus. Results of the present study indicate that allometry does increase the level of morphological integration in the forcipular apparatus. According to our results, the forcipular coxosternite and forcipules could not be considered as separate modules; namely, they probably share similar developmental pathways and function in different forms of behavior and survival in L. melanops.</div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":"71 ","pages":"Article 101203"},"PeriodicalIF":2.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33458494","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: 2