External sense organs in freshwater oligochaetes (Annelida, Clitellata) revealed by scanning electron microscopy

2006 ◽  
Vol 267 (2) ◽  
pp. 198-207 ◽  
Author(s):  
Eva Yáñez ◽  
Sergio Cuadrado ◽  
Enrique Martínez-Ansemil
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Sense Organs ◽  
Freshwater Oligochaetes ◽  
Scanning Electron

Ultrastructural Analysis of Mouthparts of Adult Horn Fly (Diptera: Muscidae) From the Brazilian Midwest Region

2020 ◽  
Vol 57 (5) ◽  
pp. 1447-1458 ◽  
Author(s):  
Fernando de Freitas Fernandes ◽  
Ana Cristina Bahia ◽  
Nágila Francinete Costa Secundino ◽  
Paulo Filemon Paolucci Pimenta
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Morphological Characteristics ◽  
Sense Organs ◽  
Horn Fly ◽  
Phylogenetic Studies ◽  
Midwest Region ◽  
Well Differentiated ◽  
Maxillary Palps ◽  
Scanning Electron

Abstract The ultrastructure of the mouthparts of Haematobia irritans (L.) was investigated by scanning electron microscopy. The morphological characteristics of the maxillary palps, labium (prementum and postmentum), labrum, hypopharynx, haustellum, and labellar lobes are described, as well as of the sensilla evidenced on all the surface of the mouthparts, and the set of different positions assumed by the mouth apparatus of this fly. Based on their morphology, 12 well-differentiated sensilla were identified, among three types of cuticular sensilla: trichoidea, coeloconica, and campaniformia. A slight sexual dimorphism in the sensilla patterns found in the mouthparts of H. irritans was evidenced. These observations are discussed with reference to the current literature on the functional morphology of sense organs of Insecta. These results could facilitate the recognition of the chemosensory sensilla by electrophysiological techniques, and foment future taxonomic and phylogenetic studies to better elucidate the evolution of Diptera, Muscomorpha.

Scanning Electron Microscopy of Antennal Sense Organs in Prosapia bicincta (Say) (Hemiptera: Cercopidae)

2001 ◽  
Vol 36 (4) ◽  
pp. 335-341 ◽  
Author(s):  
Ai-Ping Liang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
External Morphology ◽  
Sense Organs ◽  
Trichoid Sensilla ◽  
Campaniform Sensillum ◽  
First Time ◽  
Scanning Electron

The external morphology of the sensilla on the antennae of the adult spittlebug, Prosapia bicincta (Say) (Hemiptera: Cercopidae), is described for the first time, using scanning electron microscope observations. The sensilla include one peg-like basiconic sensillum (about 65.05 to 65.90 μ in length and 13.33 to 14.08 μ in width at base), 18 to 23 porous coeloconic sensilla (mostly 7.38 to 8.94 μ in diam), one campaniform sensillum and a cluster of trichoid sensilla (about 45 to 55 (μ long). The first two types of sensilla are located on the expanded flagellar base, while the latter two sensilla are on the pedicel.

Cephalic sense organs of the parasitic nematode Capillaria hepatica (Bancroft, 1893)

1974 ◽  
Vol 52 (10) ◽  
pp. 1207-1213 ◽  
Author(s):  
K. A. Wright
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Parasitic Nematode ◽  
Nerve Ring ◽  
Dense Material ◽  
Basal Bodies ◽  
Sense Organs ◽  
Capillaria Hepatica ◽  
Scanning Electron ◽  
Sensory Endings

The kinds and distribution of cephalic sense organs of Capillaria hepatica (Bancroft, 1893) have been determined by transmission and scanning electron microscopy. A total of 18 sense organs occur. All contain the modified endings of sensory dendrites whose cell bodies occur in the region of the nerve ring, some 48 microns (μ) from the head. After noting the number of dendritic endings, their modifications, and the association they make with the cephalic cuticle, it is possible to distinguish five types of sense organs. All of these have a pore through the cuticle, and hence may function as chemoreceptors. One type includes an expanded dendritic ending that contains much dense material between neurotubules, and lies under an infolded flap of cuticle; this ending is probably mechanoreceptive. Hypodermal cells enclose the sensory endings from their tips to a level below their basal bodies, but posteriorly, the dendrites lie freely in the pseudocoelom and form two subdorsal and two sublateral nerves. Just anterior to the circumesophageal nerve ring, the subdorsal nerves unite. These findings are discussed in terms of previous studies.

Scanning electron microscopy of foreleg tarsal sense organs of the poultry red mite, Dermanyssus gallinae (DeGeer) (Acari:Dermanyssidae)

Micron ◽  
2005 ◽  
Vol 36 (5) ◽  
pp. 415-421 ◽  
Author(s):  
M.D. Soler Cruz ◽  
M.C. Vega Robles ◽  
J.B. Jespersen ◽  
O. Kilpinen ◽  
M. Birkett ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Dermanyssus Gallinae ◽  
Sense Organs ◽  
Poultry Red Mite ◽  
Scanning Electron

Labrocibarial sensilla in the female of the black fly Simulium damnosum s.l. (Diptera: Simuliidae)

1987 ◽  
Vol 65 (2) ◽  
pp. 441-444 ◽  
Author(s):  
D. Jefferies
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fine Structure ◽  
External Morphology ◽  
Sense Organs ◽  
Black Fly ◽  
Food Canal ◽  
Simulium Damnosum ◽  
Scanning Electron

Five types of sensilla were identified at the entrance to or within the food canal in female Simulium damnosum s.l., four on the labrum and one in the cibarium. The external morphology of these sense organs was investigated using scanning electron microscopy. Other cuticular projections present do not appear to be sensory in nature. No differences were found in the number, position, or fine structure of the mouthpart sensilla in two different cytospecies of S. damnosum, S. sanctipauli Vajime &Dunbar and S. sirbanum Vajime &Dunbar.

Fractographic Studies of the Honey Bee Sensilla Coeloconica and Sensilla Amupullacea Campaniformia by SEM

1974 ◽  
Vol 32 ◽  
pp. 186-187
Author(s):  
Alfred Dietz ◽  
Leroy M. Anderson ◽  
Malcolm T. Sanford
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fine Structure ◽  
Surface Structure ◽  
Honey Bee ◽  
Honey Bees ◽  
Sense Organs ◽  
The Past ◽  
Sensory Structures ◽  
Scanning Electron

The antennal sensory organs of honey bees have been studied by many researchers in the past. In most instances their work was confined to readily identifiable cuticular sensory structures such as the pore plate organ (Figs. 1, 3) and several types of hair-like sensilla (Fig. 1). The total number of receptors on a honey bee antennae is roughly 13,000 of which about 8,200 belong to the hair-like receptors or s. trichodea group (Fig. 1). The pore plate organs or s. placodea comprise the next largest group with 3,000 receptors. The pit peg sense organs or s. ampullacea (Figs. 3, 5), and s. coeloconica (Figs. 1, 2) are present in considerably smaller number (approximately 300) and have received little attention since they cannot be readily identified on the basis of their surface structure. Thus, little is known about the fine structure of these pit peg organs. In this study, pit peg organs of plastic embedded antennae were examined by scanning electron microscopy.

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