Feeding Stimulating Signal in Labial Gland Secretion of the Subterranean Termite Reticulitermes santonensis

1997 ◽  
Vol 23 (10) ◽  
pp. 2371-2381 ◽  
Author(s):  
Judith Reinhard ◽  
Horst Hertel ◽  
Manfred Kaib
Keyword(s):  
Subterranean Termite ◽  
Gland Secretion ◽  
Labial Gland ◽  
Labial Gland Secretion ◽  
Reticulitermes Santonensis

Composition of the Labial Gland Secretion of the Bumblebee Males Bombus pomorum

2001 ◽  
Vol 56 (5-6) ◽  
pp. 430-436 ◽  
Author(s):  
Irena Valterová ◽  
Klára Urbanová ◽  
Oldřich Hovorka ◽  
Jiří Kindl
Keyword(s):  
Scent Marking ◽  
Ethyl Esters ◽  
Gland Secretion ◽  
Labial Gland ◽  
Minor Components ◽  
The Czech Republic ◽  
Bumblebee Species ◽  
Labial Gland Secretion ◽  
Marking Behaviour ◽  
Labial Glands

Labial gland secretions of 22 males of the bumblebee Bombus pomorum , collected in the Czech Republic, were analysed separately for each individual. The secretions contained 70 compounds among which saturated and unsaturated hydrocarbons strongly dominated. The proportion of hydrocarbons in the secretion was unusually high (85-100% ) compared to other bumblebee species studied so far (3-15%). Methyl and ethyl esters of fatty acids, known from many other bumblebee species, formed only minor components (less than 1 % in sum) of the secretions of several B. pomorum individuals. No terpenic compounds, typical for males’ marking secretion of many bumblebee species, were detected in B. pomorum . The absolute quantities of hydrocarbons present in the labial gland extracts were comparable with those usually present in other species. The composition of hydrocarbons found in the labial glands was different from the profile of the cuticular hydrocarbons. Despite our expectations in species exhibiting a regular patrolling and scent-marking behaviour, the labial gland extracts obtained from B. pom orum males were unusually low concentrated and their chemical composition was atypical with respect of the proportions of hydrocarbons when compared with other patrolling species. This is the first report on the analysis of the labial gland secretion of the B. pomorum males.

scholarly journals Comparative Study of the Labial Gland Secretion in Termites (Isoptera)

PLoS ONE ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. e46431 ◽  
Author(s):  
David Sillam-Dussès ◽  
Jana Krasulová ◽  
Vladimír Vrkoslav ◽  
Jana Pytelková ◽  
Josef Cvačka ◽  
...  
Keyword(s):  
Comparative Study ◽  
Gland Secretion ◽  
Labial Gland ◽  
Labial Gland Secretion

scholarly journals Comparison of Age-dependent Quantitative Changes in the Male Labial Gland Secretion of Bombus Terrestris and Bombus Lucorum

2009 ◽  
Vol 35 (6) ◽  
pp. 698-705 ◽  
Author(s):  
Petr Žáček ◽  
Blanka Kalinová ◽  
Jan Šobotník ◽  
Oldřich Hovorka ◽  
Vladimír Ptáček ◽  
...  
Keyword(s):  
Bombus Terrestris ◽  
Gland Secretion ◽  
Labial Gland ◽  
Labial Gland Secretion ◽  
Age Dependent ◽  
Bombus Lucorum ◽  
Quantitative Changes

scholarly journals Correction: Comparative Study of the Labial Gland Secretion in Termites (Isoptera)

PLoS ONE ◽  
2012 ◽  
Vol 7 (11) ◽  
Author(s):  
David Sillam-Dussès ◽  
Jana Krasulová ◽  
Vladimír Vrkoslav ◽  
Jana Pytelková ◽  
Josef Cvačka ◽  
...  
Keyword(s):  
Comparative Study ◽  
Gland Secretion ◽  
Labial Gland ◽  
Labial Gland Secretion

scholarly journals The physiology of wandering behaviour in Manduca sexta. I. Temporal organization and the influence of the internal and external environments

1984 ◽  
Vol 110 (1) ◽  
pp. 35-51 ◽  
Author(s):  
O. S. Dominick ◽  
J. W. Truman
Keyword(s):  
Juvenile Hormone ◽  
Manduca Sexta ◽  
Temporal Organization ◽  
Gland Secretion ◽  
Major Influence ◽  
Labial Gland ◽  
Larval Size ◽  
Prothoracicotropic Hormone ◽  
Behavioural Changes ◽  
Labial Gland Secretion

A stereotyped series of behavioural changes occurs in preparation for pupation in Manduca sexta. Feeding declines over an 8-h period, after which the larva coats its body with a labial gland secretion. The animal then begins a 10- to 30-h wandering behaviour during which it constructs a pupation chamber underground. Wandering behaviour starts during a specific temporal gate which is determined by an internal circadian timer. The scotophase of the day prior to wandering has the major influence on the timing of internal processes which activate the behaviour. Wandering duration is correlated with larval size, reflecting a possible influence of juvenile hormone. The larva appears to be irrevocably committed to begin wandering by an event that occurs about 15 h previously, a time that corresponds to the second of three prothoracicotropic hormone (PTTH) pulses and the accompanying elevation of ecdysteroids as measured by Gilbert et al. (1981). We conclude that both the initiation and duration of wandering behaviour are governed primarily by processes which are internal to the larva.

Sign in / Sign up

Export Citation Format

Share Document