Tergal Gland Secretion of the Rove Beetle Aleochara pseudochrysorrhoa (Staphylinidae: Aleocharinae): Chemical Composition and Biological Roles

2020 ◽  
Vol 17 (10) ◽  
Author(s):  
Maycon R. Silva ◽  
Diogo M. Vidal ◽  
Leonardo Figueiredo ◽  
Pamela T. Bandeira ◽  
Jan Bergmann ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Gland Secretion ◽  
Tergal Gland ◽  
Rove Beetle ◽  
Tergal Gland Secretion

scholarly journals The Tergal Gland Secretion of the Two Rare Myrmecophilous SpeciesZyras collarisandZ. haworthi(Coleoptera: Staphylinidae) and the Effect onLasius fuliginosus

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Michael Stoeffler ◽  
Lea Boettinger ◽  
Till Tolasch ◽  
Johannes L. M. Steidle
Keyword(s):  
Filter Paper ◽  
Aphid Species ◽  
Gland Secretion ◽  
Beetle Species ◽  
Tergal Gland ◽  
Lasius Fuliginosus ◽  
Tergal Glands ◽  
Rove Beetle ◽  
Tergal Gland Secretion

The beetle speciesZyras collarisandZ. haworthibelong to the rove beetle tribe Myrmedoniini (Staphylinidae: Aleocharinae), which comprises many myrmecophilous species. Due to their rareness, it is unknown how the two species interact with their host ants. GC-MS analyses revealed that both species releaseα-pinene,β-pinene, myrcene and limonene from their defensive tergal glands. This composition of tergal gland secretion is unique within the subfamily Aleocharinae. In biotests,Lasius fuliginosusants showed increased antennation towards filter paper balls treated with mixtures of these substances in natural concentrations. Because these monoterpenes are also present in some aphid species which are attended by ants, we hypothesize thatZyrasbeetles mimic the presence of aphids and thereby achieve acceptance by their host ants.

Chemical Composition of the Rectal Gland and Volatiles Released by Female Queensland Fruit Fly, Bactrocera tryoni (Diptera: Tephritidae)

2019 ◽  
Vol 48 (4) ◽  
pp. 807-814 ◽  
Author(s):  
Ashraf M El-Sayed ◽  
Uppala Venkatesham ◽  
C Rikard Unelius ◽  
Andrew Sporle ◽  
Jeanneth Pérez ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Chemical Analysis ◽  
Fruit Fly ◽  
Gland Secretion ◽  
Rectal Gland ◽  
Bactrocera Tryoni ◽  
Headspace Volatiles ◽  
Ethyl Palmitate ◽  
Minor Compounds

Abstract The composition of the rectal gland secretion and volatiles emitted by female Queensland fruit fly, Bactrocera tryoni was investigated. Esters were found to be the main compounds in the gland extracts and headspace, while amides were the minor compounds in the gland extracts and headspace. Ethyl dodecanoate, ethyl tetradecanoate, ethyl (Z9)-hexadecenoate and ethyl palmitate were the main esters in the gland extracts, while ethyl dodecanoate and ethyl tetradecanoate were the main esters in the headspace. Four amides (N-(3-methylbutyl)acetamide), N-(2-methylbutyl)propanamide, N-(3-methylbutyl)propanamide, and N-(3-methylbutyl)-2-methylpropanamide were found in the gland extracts and the headspace. Among the amides, N-(3-methylbutyl)acetamide and N-(3-methylbutyl)propanamide were the main amides in the gland extracts and the headspace. Traces of three spiroacetals were found both in the gland extracts and in the headspace. (E,E)-2,8-Dimethyl-1,7-dioxaspiro[5.5]undecane, (E,E)-2-ethyl-8-methyl-1,7-dioxaspiro[5.5]undecane, (E,E)-2-propyl-8-methyl-1,7-dioxaspiro[5.5]undecane. All compounds found in the headspace were present in the extract of the rectal gland suggesting that the rectal gland is the main source of the headspace volatiles, whose function remains to be elucidated. This is the first comprehensive chemical analysis of the rectal gland secretions and volatiles of female B. tryoni, and further laboratory and field bioassays are required to determine the function of compounds identified in this study. Discovery of the same amides previously identified in the male rectal gland in the female rectal gland raises questions about the pheromonal role previously suggested for these compounds.

Schistosoma mansoni Cercariae: Stimulation of Acetabular Gland Secretion Is Adapted to the Chemical Composition of Mammalian Skin

1997 ◽  
Vol 83 (6) ◽  
pp. 1079 ◽  
Author(s):  
Wilfried Haas ◽  
Dirk Diekhoff ◽  
Karin Koch ◽  
Gerold Schmalfuss ◽  
Christina Loy
Keyword(s):  
Chemical Composition ◽  
Schistosoma Mansoni ◽  
Gland Secretion ◽  
Mammalian Skin ◽  
Stimulation Of
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