Morphological characteristics of sensilla on the female ovipositor of Lype phaeopa (Psychomyiidae; Trichoptera)

Spänhoff, Bernd; Alecke, Christian; Kaschek, Norbert; Lange, Jürgen; Meyer, Elisabeth I.

doi:10.1673/031.003.1201

Cited by 17 publications

(13 citation statements)

References 16 publications

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“…Various insects well-endowed with sensory organs on their ovipositor have been demonstrated by numerous authors (Wallis 1962;Kalogianni 1995;Brown and Anderson 1998;Vilhelmsen 2000;Spänhoff et al 2003). The results of this study indicate that the terminalia of C. nigripes are equipped with many different types of sensilla (namely, sensilla trichodea, sensilla basiconica, sensilla placodea and probably sensilla styloconica), thereby demonstrating that a variety of sense organs are used to detect stimuli from the external environment.…”

Section: Discussionsupporting

confidence: 57%

Fine structure of Chrysomya nigripes (Diptera: Calliphoridae), a fly species of medical importance

et al. 2007

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The fine structure of Chrysomya nigripes Aubertin, a blow fly species of medical importance, is presented using scanning electron microscopy (SEM) to contribute information on the morphology of the adult of this fly species. The surface of the dome-shaped ommatidia exhibits a microscopic granulose appearance. The palpus is equipped with small sensilla basiconica and sensilla chaetica, which provide sensory reception for detecting environmental information. At the apex of the mouthparts, the labellum is endowed with large numbers of sensilla trichodea and basiconic-like sensilla of variable length. The anterior (mesothoracic) spiracle is elliptical in shape and covered with extensively ramified setae except for a small dorsal aperture. The posterior (metathoracic) spiracle is shaped like a rounded isosceles triangle and covered by two valves of unequal size. The larger valve covers the upper approximately 2/3 of the spiracular opening, whereas the smaller valve covers the lower approximately 1/3 of the opening. Extensively ramified setae line and cover the valves over the entire spiracle. SEM analyses of the haltere knob and the prosternal organs, located adjacent to the cervical sclerites, revealed a striking resemblance of the morphological features of their sensilla. Each sensillum emanates from a cuticular ring, is approximately 12-15 mum in length, has a smooth surface, and terminates in a sharp tip. Various types of sensilla were associated with the ovipositor including sensilla trichodea, sensilla basiconica, sensilla placodea and probably sensilla styloconica. The possible function of sensilla distributed in particular regions of the fly integument is discussed.

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Section: Discussionsupporting

confidence: 57%

Fine structure of Chrysomya nigripes (Diptera: Calliphoridae), a fly species of medical importance

et al. 2007

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“…Females of L. phaeopa deposit their eggs into cracks and crevices of wood substrates in streams (Spänhoff et al 2003a), both on emergent and submerged parts of wood, by crawling into the water. The sensillar inventory of the ovipositor allows spatial orientation in searching for suitable oviposition places and additional proving of the substrate prior to oviposition (Spänhoff et al 2003a).…”

Section: Discussionmentioning

confidence: 99%

“…The sensillar inventory of the ovipositor allows spatial orientation in searching for suitable oviposition places and additional proving of the substrate prior to oviposition (Spänhoff et al 2003a). Larvae are specialised in wood exploitation by constructing their retreats mainly from wooden fragments, and exhibit high amounts of wood in their guts (Spänhoff et al 2003b), although their capability of enzymatic wood digestion is rather low (Schulte et al 2003).…”

Section: Discussionmentioning

confidence: 99%

“…The pleurae are slightly pushed out revealing the "egg-channel" opening near the ovipositor tip. B Detail view of the "egg-channel" opening and ovipositor tip with several sensilla of different types (for details see Spänhoff et al 2003a). Note the folded condition of the pleurae (pl) and the transition between terga IX and X indicating a hinge-like structure.…”

Section: Discussionmentioning

confidence: 99%

“…This is correlated with females choosing different substrates for egg deposition. L. phaeopa prefers submerged wood substrates, where the females can insert their ovipositor into cracks and crevices (Spänhoff et al 2003a). In contrast, T. unicolor lay eggs almost exclusively into porous tufa habitats in calcareous streams (Alecke 1998).…”

Section: Introductionmentioning

confidence: 99%

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Ecological aspects of the external morphology and functionality of the psychomyiid female ovipositor (Insecta, Trichoptera)

Spänhoff¹,

Alecke

2004

Zoomorphology

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Females of most psychomyiid species bear an elongated ovipositor enabling them to oviposit their eggs into grooves and cavities in different kinds of substrates in freshwaters. Although the preference of psychomyiid species for oviposition into distinct substrates and the subsequent larval life performance in aquatic habitats is already known, the mode of oviposition and the functional morphology of the elongated ovipositor have not been described until now. In this study we present SEM photographs of some psychomyiid species with female ovipositors of different lengths and shapes, explaining their preference for oviposition into distinct substrates. Additionally, we discuss some ecological aspects of the ovipositor shapes and the mode of egg laying for psychomyiids. The female ovipositor consists of two body segments, with an elongated IXth and a distinctly shorter Xth segment, which is flexible and can be pushed up dorsally when releasing the eggs. On the basis of SEM photographs, we suppose that the opening of the channel through which the eggs were released is located ventrally near the ovipositor tip. The ovipositor itself is characterised by a ventral cleft reaching from the gonoporus of segment IX to the tip of the last segment X. We stored adult females abdomina overnight in different aqueous dilutions of ethanol leading to different stages of swelling of the ovipositors (grade of swelling in distilled water >30% ethanol >70% ethanol). Some internal membranelike structures, normally infolded into the ovipositor, became visible by the swelling of the ovipositor. We discuss the possible rearrangement of the organisation of segment IX resulting in the development of an ovipositor on the basis of SEM photographs of the differently swollen ovipositors.

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External morphology of Trichogramma dendrolimi matsumura (hymenoptera: Trichogrammatidae) organ and ultrastructure of the sensilla

Zhang

Kong

et al. 2012

Microscopy Res & Technique

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In this article, we described the ultrastructure of the sensilla on the antenna, eyes, mouthparts, wings, legs, and external genitalia of female and male Trichogramma dendrolimi using scanning electron microscopy (SEM). The antenna possessed the most sensilla types. We found 13 types of sensilla on female antenna, which were trichoid sensilla (TS) type 1-4, chaetica sensilla (ChS) type 1-2, campaniform sensilla (CaS), falcate sensilla, placoid sensilla (PS) type 1-2, basiconic capitate peg sensilla (BCPS) type 1, coeloconic sensilla (CoS), and styloconic sensilla. Ten types of sensilla were found on the male antenna, some were the same as that on female T. dendrolimi antenna, such as TS types 1 and 3, CaS, PS type 1, BCPS type 1, and CoS, but TS types 5 and 6, ChS type 3, and BCPS 2 were specific to male T. dendrolimi antenna. The leg possesses eight types of sensilla and a kind of tympana structure. Four types of TSs were found on the wings. On the mouthparts, sensilla on the maxillary and labial palps were unique, including two TSs and one ChS. The ovipositor possesses three types of sensilla, and the copulatory organ possesses two types. The eyes had only one kind of TS. Furthermore, external morphology of antenna and external genitalia revealed distinct sexual dimorphisms. According to their morphology, the possible functions of these sensilla were discussed. These results may further our understanding of the sensory mechanisms of T. dendrolimi in response to infochemicals within the environment.

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Morphological characteristics of sensilla on the female ovipositor of Lype phaeopa (Psychomyiidae; Trichoptera)

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 17 publications

References 16 publications

Fine structure of Chrysomya nigripes (Diptera: Calliphoridae), a fly species of medical importance

Fine structure of Chrysomya nigripes (Diptera: Calliphoridae), a fly species of medical importance

Ecological aspects of the external morphology and functionality of the psychomyiid female ovipositor (Insecta, Trichoptera)

External morphology of Trichogramma dendrolimi matsumura (hymenoptera: Trichogrammatidae) organ and ultrastructure of the sensilla

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