Chemical diversity and potential biological functions of the pygidial gland secretions in two species of Neotropical dung roller beetles

Dung roller beetles of the genus Canthon (Coleoptera: Scarabaeinae) emit an odorous secretion from a pair of pygidial glands. To investigate the chemical composition of these secretions, we used stir bar sorptive extraction (SBSE), coupled with gas chromatography–mass spectrometry (GC–MS) for analysis of extracts of pygidial gland secretions secreted by the dung roller beetles Canthon femoralis femoralis and Canthon cyanellus cyanellus. Chemical analyses of volatiles collected from pygidial gland secretions comprise a great diversity of the functional groups. Chemical profile comparisons showed high intra- and interspecific variability. The pygidial gland secretion of Canthon f. femoralis was dominated by sesquiterpene hydrocarbons, whereas the profile of Canthon c. cyanellus was dominated by carboxylic acids. The different pygidial secretions have a high diversity of chemical compounds suggesting a multifunctional nature involving some key functions in the biology. We discuss the biological potential of these compounds found in the pygidial glands of each species with respect to their ecological and behavioral relevance.

Quo vadis Aethina tumida? Biology and control of small hive beetles

Small hive beetles (SHBs) are generalists native to sub-Saharan Africa and reproduce in association with honeybees, bumblebees, stingless bees, fruits and meat. The SHB has recently become an invasive species, and introductions have been recorded from America, Australia, Europe and Asia since 1996. hile SHBs are usually considered a minor pest in Africa, they can cause significant damage to social bee colonies in their new ranges. Potential reasons for differential impact include differences in bee behaviour, climate and release from natural enemies. Here, we provide an overview on biology, distribution, pest status, diagnosis, control and prevention to foster adequate mitigation and stimulate future research. SHBs have become a global threat to both apiculture and wild bee populations, but our knowledge of this pest is still limited, reating demand for more research in all areas of its biology.

The insect book : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies /

Bibliography.

Transport : the magic carpet of industry, briefly describing the history and development of transport by sea, road, canal and railway /

Mode of access: Internet.

Beetles of the genus Hyperaspis inhabiting the United States

At head of title: Thomas Lincoln Casey fund.

An illustrated descriptive catalogue of the Coleoptera or beetles (exclusive of the Rhynchophora) known to occur in Indiana.

Cover title: The Coleoptera or beetles known to occur in Indiana.

The essentials of modern carpet installation.

At head of title: Carpet and Rug Institute.

Museum pests : Dermestid beetles, clothes moth, case making moth : final report /

Pagination preceded by package no.: xxiii.

Bark beetles and ambrosia beetles (Coleoptera: Scolytoidea): with special references to species occurring in North Carolina,

Bibliography: p. [162]-167.

National Voluntary Laboratory Accreditation Program : carpet and carpet cushion /

"October 1994."

A taxonomic list of the genera of beetles of America north of Mexico.

"Reprinted from: A manual of the genera of beetles of America north of Mexico .. by J. Chester Bradley .. Ithaca, New York, Daw, Illston and Company, 1930."

Effect of DDT on Amphimallon majalis beetles.

Typewritten.

Mississippi bark beetles,

Bibliography: p. 122-126.

Beetles in your pines? How good cutting practices and management stop beetles from killing your timber,

Pages 28-29, blank for "Notes."