Disruption of Ant Recruitment by the Frontal Gland Secretion of a Termite: A Chemical Defense Strategy

The components of the defence secretion of the soldiers of Nasutiterms nigriceps termite species (Isoptera: Termitidae: Nasutitermitinae) have been identified. In the volatile fraction the following components were found: α- and β-pinene, camphene, myrcene, α-terpinene, p-cymene, limonene and terpinolene. Ten diterpenic compounds (I - X), mostly derivatives of the tricyclic trinervitane, were found in the non-volatile fraction. The structure of the so far undescribed 1(15),8(19)-trinervitadiene-2β,3α,14α-triol triacetate (X) was determined on the basis of its mass and infrared spectra and a detailed analysis of 1H and 13C NMR spectra. Considerable differences were found in the composition of the non-volatile fraction of the secretion of the species of termites studied from various localities.

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Methyl 3α,6α-diacetoxy-10-oxo-(7α)-kemp-11-en-20-oate: The revised structure for the kempane derivative from the frontal gland secretion of Nasutitermes costalis soldiers

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19870707 ◽

1987 ◽

Vol 52 (3) ◽

pp. 707-713 ◽

Cited By ~ 4

Author(s):

Silvio Cerrini ◽

Doriano Lamba ◽

Irena Valterová ◽

Miloš Buděšínský ◽

Jan Vrkoč ◽

...

Keyword(s):

Gland Secretion ◽

Frontal Gland ◽

X Ray ◽

Nasutitermes Costalis ◽

Suggested Structure ◽

Defense Compound

The structure of methyl 3α,6α-diacetoxy-10-oxo-(7α)-kemp-11-en-20-oate (II) was established by X-ray analysis for a defense compound of termites Nasutitermes costalis. The previously suggested structure I with 7β-kempane skeleton is revised.

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Impact of a juvenile hormone analogue on the anatomy and the frontal gland secretion of Prorhinotermes simplex (Isoptera: Rhinotermitidae)

Journal of Insect Physiology ◽

10.1016/j.jinsphys.2009.09.004 ◽

2010 ◽

Vol 56 (1) ◽

pp. 65-72 ◽

Cited By ~ 5

Author(s):

Jan Šobotník ◽

Robert Hanus ◽

Rafal Piskorski ◽

Klára Urbanová ◽

Zdeněk Wimmer ◽

...

Keyword(s):

Juvenile Hormone ◽

Gland Secretion ◽

Hormone Analogue ◽

Frontal Gland ◽

Juvenile Hormone Analogue

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Specialized Vacuoles of Myrosin Cells: Chemical Defense Strategy in Brassicales Plants

Plant and Cell Physiology ◽

10.1093/pcp/pcy082 ◽

2018 ◽

Cited By ~ 6

Author(s):

Makoto Shirakawa ◽

Ikuko Hara-Nishimura

Keyword(s):

Chemical Defense ◽

Defense Strategy

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Cardenolide content of some leaf- and stem-feeding insects on temperate North American milkweeds (Asclepias spp.)

Canadian Journal of Zoology ◽

10.1139/z77-130 ◽

1977 ◽

Vol 55 (6) ◽

pp. 1024-1028 ◽

Cited By ~ 34

Author(s):

M. B. Isman ◽

S. S. Duffey ◽

G. G. E. Scudder

Keyword(s):

North America ◽

Chemical Defense ◽

Host Plant ◽

North American ◽

Oncopeltus Fasciatus ◽

Physiological Factors ◽

Defense Strategy ◽

Arctiid Moth ◽

Chrysomelid Beetles ◽

Cerambycid Beetles

The cardenolide content of eight species of insects which feed on the leaves and stems of milk weed (Asclepias spp.) in temperate North America was examined. Cerambycid beetles of the genus Tetraopes contained small quantities of cardenolides. while two genera of chrysomelid beetles, Chrysochus and Labidomera, contained little or no cardenolides in their bodies. All of these insects are thought to be warningly coloured. The cardenolide content of Tetraopes, in contrast with other milkweed herbivores such as the lygaeid bugs Oncopeltus fasciatus and Lygaeus kalmii, appears to be limited by physiological factors, rather than the cardenolide content of the host plant. Cardenolides were not detected in the pupae of an arctiid moth which has an aposematic larva, a cryptic grasshopper, or a cryptic plant hopper, all of which fed on milkweeds known to contain cardenolides. The implication for chemical defense and the position of these insects in mimicry complexes is briefly discussed. It appears that few of the principal milkweed-feeding insects in temperate North America may use host-derived cardenolides as a chemical defense strategy.

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