scholarly journals Cuticular Structures in Micropterous Crickets (Orthoptera, Gryllidae, Petaloptilini, Gryllomorphini)

Insects ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 708
Author(s):  
Pablo Barranco ◽  
José Luis Molina-Pardo
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Morphological Study ◽  
Terrestrial Ecosystems ◽  
Diverse Group ◽  
Campaniform Sensilla ◽  
Biometric Parameters ◽  
Social Importance ◽  
Cuticular Structures ◽  
Scanning Electron

Orthoptera is a very diverse group that has colonized practically all terrestrial ecosystems on the planet. They have adapted to live in the endogenous environment as well as in caves so that some species exhibit troglomorphic characteristics. This group has been extensively studied due to its economic and social importance; however, many basic morphological and biological questions remain to be solved. In this study, a comparative morphological study by scanning electron microscopy of different structures of eight species of micropteran crickets of the tribes Gryllomorphini and Petaloptilini, whose tegmina had lost their flight and song functionality was carried out. Special emphasis was placed on the tegmina and their possible relationship to reproductive functions. In addition, to assess troglomorphism in the genus Petaloptila, the biometric parameters of six other species have been considered. Actualization of the lifestyle of the studied species has also been carried out. The results show structures not previously described in this group (gland openings, setae, pores, or group of campaniform sensilla). Structures not previously described in this group have been detected, and tegmina (glandular openings and devoured tegmina) seem to confer a role in reproduction. Troglomorphisms are only observed in species of the subgenus Zapetaloptila. Statistically, significant differences have been found in characters such as cephalic elongation, ocular reduction, greater length of appendages, and depigmentation.

Cibarial sensilla and armature in mosquito adults (Diptera: Culicidae)

1983 ◽  
Vol 61 (3) ◽  
pp. 633-646 ◽  
Author(s):  
Robert M. K. W. Lee ◽  
D. A. Craig
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Campaniform Sensilla ◽  
Anopheles Species ◽  
Anopheles Farauti ◽  
Wyeomyia Smithii ◽  
Force Feeding ◽  
Culiseta Inornata ◽  
Scanning Electron

Cibaria of 37 species of mosquitoes representing nine genera were examined using light microscopy, and those of Anopheles farauti Laveran, Aedes aegypti (L.) Culiseta inornata (Williston), and Culex declarator Dyar and Knab were studied using scanning electron microscopy. Uniporous, trichoid, and campaniform sensilla were found inside the cibarial pump. Based on force-feeding studies of other workers and external structure of sensilla, it is suggested that some of these sensilla may be chemoreceptors involved in determining acceptability of ingested food, whereas the others may be involved in dispatch of ingested blood into the midgut. Trichoid sensilla probably function as flow receptors. Number of palatal papillae in the cibarium varied between species: some have four, others have six. Generally, number and location of cibarial sensilla are similar between species. Cibarial armature was found in the cibaria of females of Culex, some Anopheles species, and Wyeomyia smithii (Coquillett), and also in both sexes of Opifex fuscus (Hutton). The function of this armature is discussed. Possible use of cibarial sensilla and armature to separate taxonomically difficult species is suggested.

Pars flaccida perforation in tissue culture: morphological study

1990 ◽  
Vol 104 (2) ◽  
pp. 91-96 ◽  
Author(s):  
L.-E. Stenfors ◽  
E. G. Olsen ◽  
A. Ö. Henriksen
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tissue Culture ◽  
Inflammatory Reaction ◽  
Granulation Tissue ◽  
Contact Area ◽  
Morphological Study ◽  
Squamous Epithelium ◽  
Pars Flaccida ◽  
Scanning Electron

AbstractSubtotal pars flaccida perforation was effected in vitro in rat tympanic membranes. The drums were subsequently kept in tissue culture and after various intervals studied by means of light and scanning electron microscopy. No complete covering of the perforation was seen, though a marked thickening and hyperplasia of the outer, keratinizing, squamous epithelium (OE) was evident. The inner, tympanal epithelium (IE) appeared swollen, containing rounded structures in the cytoplasm especially close to the contact area with the OE. Ingrowth of OE onto the tympanal side of the drum was seen particularly in the areas where the IE was sparse and completely lacking. Complete covering of a drum perforation seems to be dependent on the formation of supporting granulation tissue, probably resulting from an inflammatory reaction in the healing area.

Morphological study of the lingual papillae in the fruit bat ( Rousettus amplexicaudatus ) by scanning electron microscopy and light microscopy

2020 ◽  
Vol 49 (2) ◽  
pp. 173-183 ◽  
Author(s):  
Geraldus Gunawan ◽  
Golda Rani Saragih ◽  
Yusuf Umardani ◽  
Srikanth Karnati ◽  
Hevi Wihadmadyatami ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Morphological Study ◽  
Lingual Papillae ◽  
Fruit Bat ◽  
Scanning Electron

scholarly journals Contracaecumovale (Nematoda: Anisakidae) from Rollandia rolland Quoy & Gaimard 1824 (Aves, Podicipedidae) in Argentina

2012 ◽  
Vol 21 (2) ◽  
pp. 143-147 ◽  
Author(s):  
Noelia Adelina Galeano ◽  
Ruben Daniel Tanzola
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Morphological Study ◽  
Buenos Aires ◽  
First Record ◽  
Buenos Aires Province ◽  
Marked Specificity ◽  
Scanning Electron

Necropsy on 15 specimens of white-tufted grebe, Rollandiarolland, caught in the Mar Chiquita and Chascomús lagoons (Buenos Aires province), revealed the presence of Contracaecumovale (Linstow, 1907). This nematode shows a marked specificity for podicipediform birds. The specimens were identified from morphological study on features such as cephalic and esophageal structures and caudal papillae, using both optical and scanning electron microscopy. This is the first record of C. ovale parasitizing R. rolland in Argentina.

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