THE THORACIC MECHANISM OF THE MILKWEED BUG,<i>ONCOPELTUS FASCIATUS</i>(HETEROPTERA: LYGAEIDAE)

Govind, C. K.; Dandy, J. W. T.

doi:10.4039/ent1021057-9

Cited by 11 publications

(11 citation statements)

References 10 publications

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“…It is conspicuous that the episternal regions were not recruited for the storage compartment. As already noted by Scudder & Meredith (1982), muscles involved in wing movements arising on different parts of the pleura constrain the use of the episternal regions for the storage compartment (see also Larsén, 1942Larsén, , 1945Govind & Dandy, 1970).…”

Section: Discussionmentioning

confidence: 99%

Defence by plant toxins in milkweed bugs (Heteroptera: Lygaeinae) through the evolution of a sophisticated storage compartment

Bramer

Friedrich

Dobler

2016

Systematic Entomology

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Species of the heteropteran subfamily Lygaeinae possess special subcuticular compartments to store cardiac glycosides, plant‐derived defensive compounds, which they release upon predator attack. In adults of the large milkweed bug, Oncopeltus fasciatus, these storage compartments have previously been described as a modified integument, forming a fluid‐filled dorsolateral space. Here we use three‐dimensional imaging of serial histological sections and synchrotron radiation‐based micro‐computed tomography data to reveal the morphology of these storage compartments and the mechanisms used for the release of a cardiac glycoside‐rich fluid upon attack. Our comparative analysis revealed that the morphology and release mechanism vary among the species investigated. By reconstructing these traits on a recent molecular phylogeny of the Lygaeinae, we demonstrate that the adaptations for the storage and release of cardiac glycosides have evolved in a stepwise manner.

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Section: Discussionmentioning

confidence: 99%

Defence by plant toxins in milkweed bugs (Heteroptera: Lygaeinae) through the evolution of a sophisticated storage compartment

Bramer

Friedrich

Dobler

2016

Systematic Entomology

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“…The technique developed by Govind & Burton (1970) was used with a few modifications. In this, an insect is mounted on a suspension over a revolving turntable.…”

Section: Turn Table Experimentsmentioning

confidence: 99%

“…Photographs were analysed using the method described by Govind & Burton (1970), which produces a two-dimensional plot of a cylindrical projection of the wing tip path, in relation to the stationary wing base (see Fig. 4).…”

Section: Turn Table Experimentsmentioning

confidence: 99%

“…Muscles associated with this: bifunctional leg muscles; tergal remotor, promotor and tergotrochanteral; also TSM? (Govind & Dandy, 1972;Govind & Burton, 1970).…”

Section: The Wingstrokementioning

confidence: 99%

“…Previous flight studies on Heteroptera have been principally concerned with the measurement of flight range and endurance during tethered flight (Gringorten & Friend, 1979;Baker & Wood, 1982); the measurement of morphological parameters (Babu, Venkata Chalapathi & Chari, 1978;Puranik & Ahmed, 1976); and with the muscular control and powering of the wings. The latter studies incorporate information from tethered flight, manual manipulation of anaesthetised specimens and electrophysiological work (Barber & Pringle, 1966;Govind & Dandy, 1972;Govind & Burton, 1970;Mulloney, 1970).…”

Section: Introductionmentioning

confidence: 99%

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Functioning of the wings and axillary sclerites of Heteroptera during flight

Betts

1986

Journal of Zoology

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A high degree of automation of the wingstroke in the Heteroptera has resulted in the simplification of the axillae and associated musculature. The functions of the indirect, asynchronous flight muscles are summarised from previous investigations and original work. Functions are suggested for the tonic muscles but await confirmation by electrophysiological research. The deformations seen in heteropteran wings can be explained in terms of muscularly generated and aerodynamic forces. Unsteady aerodynamic benefits of such deformations, though unproven, may be of primary importance. Torsion, camber change and transverse flexion are all candidates for the generation of unsteady effects. The ‘near clap and peel’ seen at pronation has been described in other insects by Ellington (1984a), and it seems likely that it serves the same purpose in Heteroptera. Heteroptera, like many other insects, show wing‐tip flexion. Among several possible functions, inertial stress reduction is shown to be important.

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Morphological basis of cardiac glycoside sequestration by Oncopeltus fasciatus (Dallas) (Hemiptera: Lygaeidae)

Scudder

Meredith

1982

Zoomorphology

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THE THORACIC MECHANISM OF THE MILKWEED BUG,ONCOPELTUS FASCIATUS(HETEROPTERA: LYGAEIDAE)

Cited by 11 publications

References 10 publications

Defence by plant toxins in milkweed bugs (Heteroptera: Lygaeinae) through the evolution of a sophisticated storage compartment

Defence by plant toxins in milkweed bugs (Heteroptera: Lygaeinae) through the evolution of a sophisticated storage compartment

Functioning of the wings and axillary sclerites of Heteroptera during flight

Morphological basis of cardiac glycoside sequestration by Oncopeltus fasciatus (Dallas) (Hemiptera: Lygaeidae)

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