scholarly journals Ultrastructure of the frontal gland in Prorhinotermes simplex (Isoptera: Rhinotermitidae) and quantity of the defensive substance

2004 ◽  
Vol 101 (1) ◽  
pp. 153-163 ◽  
Author(s):  
Jan SOBOTNIK ◽  
Frantisek WEYDA ◽  
Robert HANUS ◽  
Pavlina KYJAKOVA ◽  
Jan DOUBSKY
Keyword(s):  
Frontal Gland ◽  
Defensive Substance

scholarly journals New emerging fields of application of propolis

2016 ◽  
Vol 35 (1) ◽  
pp. 1 ◽  
Author(s):  
Vassya Bankova ◽  
Milena Popova ◽  
Boryana Trusheva
Keyword(s):  
Medical Devices ◽  
Honey Bees ◽  
Food Packaging ◽  
Biomedical Application ◽  
Modern Science ◽  
Food Preservation ◽  
Over The Counter ◽  
Textile Materials ◽  
The World ◽  
Defensive Substance

Propolis (bee glue) is a sticky resinous material applied by honey bees Apis mellifera L. as a building material in their hives and as a defensive substance against infections. Propolis has been used as a remedy in traditional medicine systems all over the world, mainly to treat wounds and burns, sore throat, stomach ulcer, etc. Modern science has confirmed the antimicrobial and antiviral action of propolis, and has discovered numerous other beneficial pharmacological properties of bee glue: immunomodulating, anti-inflammatory, antiobesity, antitumor, and many others. For this reason, significant number of products containing propolis have been developed and commercialised: medical devices, over-the-counter preparations, health foods and beverages, cosmetics. This review is not dealing with propolis applications in improvement and protection of human health. Instead, it is focused on some new and promising areas of propolis use and innovative propolis containing products, emerging in the last few years: improving growth performance of livestock, food preservation, food packaging, textile materials for biomedical application, etc.

scholarly journals A new structure on the frons of male adults of the Asian rice spittlebug Callitettix versicolor (Hemiptera: Auchenorrhyncha: Cercopidae)

Zootaxa ◽  
2020 ◽  
Vol 4801 (3) ◽  
pp. 591-599
Author(s):  
AI-PING LIANG
Keyword(s):  
Short Range ◽  
Sexual Communication ◽  
Acoustic Signals ◽  
Average Density ◽  
Porous Structures ◽  
Frontal Gland ◽  
Deep Cavity ◽  
Asian Rice ◽  
Male Sex ◽  
Gland System

A new structure, here tentatively named the “frontal gland,” specifically found on frons of male adults of the Asian rice spittlebug, Callitettix versicolor (Fabricius, 1794) (Hemiptera:  Auchenorrhyncha: Cercopidae), is reported. Adult C. versicolor is distinctly dimorphic in frons morphology. The frons in female adults, like that in most cercopid species, is normally swollen and nearly bulbose and is covered with short pilosity, while the frons in male adults is visibly different, with the lower 3/5 of the postclypeus and anteclypeus being centrally flat, bare and smooth on the surface. SEM observations revealed that the flat frons surface of the male adults is covered with numerous, very fine pores. In total, each frons has over 4500 pores on the central flat area, with an average density of 55.5 ± 1.50 pores per 100 µm2. The distance among the pores averages 10.63 ± 1.8 µm. Each pore unit is composed of a round, deep cavity in which one central conical process is set. The cavity is delimited by a cuticular rim and the opening of the cavity averages 2.89 ± 0.20 µm in diameter. The central, conical process has a sponge-like apex and measures 2.52–2.70 µm in diameter. In addition, one or two (two in most cases) extremely fine pits (0.42–0.56 µm in diameter) are located on the marginal cuticle rim surrounding the cavity and its central conical process. These cuticular, fine pits are located proximal to the pores, at a distance of 0.98–1.96 µm. These porous structures are not present on the frons in female adults. They are assumed to be an exocrine gland system and are possibly the male sex pheromone-releasing glands, as they are only present in male adults. Observations of mating behavior showed that it is likely that the secretions made by the frontal gland constitute short-range attractants and may fulfil aphrodisiac functions to stimulate mating. The species of Auchenorrhyncha were previously thought to communicate via acoustic signals, but the findings described here suggest that at least one Auchenorrhynchan species also uses chemicals for sexual communication. 

The frontal gland in workers of Neotropical soldierless termites

2010 ◽  
Vol 97 (5) ◽  
pp. 495-503 ◽  
Author(s):  
Jan Šobotník ◽  
David Sillam-Dussès ◽  
František Weyda ◽  
Alain Dejean ◽  
Yves Roisin ◽  
...  
Keyword(s):  
Frontal Gland

Investigation of different ontogenetic stages of Raillietiella sp. (Pentastomida: Cephalobaenida): suboral gland and frontal gland

2000 ◽  
Vol 86 (5) ◽  
pp. 385-400 ◽  
Author(s):  
Susanne Stender-Seidel ◽  
Gabriele Thomas ◽  
Wolfgang Böckeler
Keyword(s):  
Frontal Gland ◽  
Ontogenetic Stages

Armed reproductives: Evolution of the frontal gland in imagoes of Termitidae

2013 ◽  
Vol 42 (4) ◽  
pp. 339-348 ◽  
Author(s):  
Kateřina Kutalová ◽  
Thomas Bourguignon ◽  
David Sillam-Dussès ◽  
Robert Hanus ◽  
Yves Roisin ◽  
...  
Keyword(s):  
Frontal Gland

Chemistry and Anatomy of the Frontal Gland in Soldiers of the Sand Termite Psammotermes hybostoma

2012 ◽  
Vol 38 (5) ◽  
pp. 557-565 ◽  
Author(s):  
Jana Krasulová ◽  
Robert Hanus ◽  
Kateřina Kutalová ◽  
Jan Šobotník ◽  
David Sillam-Dussès ◽  
...  
Keyword(s):  
Frontal Gland

scholarly journals Synthesis by microbial reduction of (S)-13-hydroxy-9Z,11E-octadecadienoic acid, a defensive substance in rice.

1985 ◽  
Vol 33 (5) ◽  
pp. 2168-2170 ◽  
Author(s):  
Hiroshi Suemune ◽  
Noriyuki Hayashi ◽  
Kazuhisa Funakoshi ◽  
Hiroyuki Akita ◽  
Takeshi Oishi ◽  
...  
Keyword(s):  
Octadecadienoic Acid ◽  
Microbial Reduction ◽  
Defensive Substance
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