Now showing items 1-10 of 13769
Co-occurrence of three types of egg policing in the Norwegian wasp Dolichovespula norwegica
In insect societies, workers often try to challenge the reproductive monopoly of the queen by laying their own eggs. Successful worker reproduction, however, is frequently prevented by queen policing or worker policing, ...
Behavioural responses of workers towards worker-produced male larvae and queen-produced worker larvae in Acromyrmex subterraneus brunneus Forel, 1911 (Hym., Formicidae)
(Blackwell Publishing, 2006-02-01)
Leaf-cutting ant workers care for larvae with an elaborate behavioural repertoire to satisfy the needs of the offspring. In order to investigate worker discrimination ability in the leaf-cutting ant Acromyrmex subterraneus ...
Worker demography in a large-colony, swarm-founding wasp
(SPRINGER TOKYO, 2011)
Neotropical swarm-founding wasps build nests enclosed in a covering envelope, which makes it difficult to count individual births and deaths. Thus, knowledge of worker demography is very limited for swarm-founding species ...
Beyond trade unions´ strategy? : The social construction of precarious workers organizing in the city of Buenos Aires
The paper presents preliminary findings of qualitative research, case study based, on the organization and collective mobilization of two groups of precarious workers in the city of Buenos Aires. Contrary to research that ...
Digging Stones in a Quarry, Trinidad, B.W.I.
(Cum Privilegio (Latin: With privilege), James Book Store, 2009-02-05)
A group labourers at a quarry.
The constant and continuous voice of workers in Argentina
(Emerald Group Publishing Limited, 2016-01)
It could be argued that in Argentina, workers’ voice has never been silenced. In a legislative system protecting workers and politically and legally empowering trade unions, these organisations have historically represented ...
Electrophoretical polypeptide pattern of hypopharyngeal glands extracts from workers and males of Scaptotrigona postica Latr. (Hymenoptera, Apidae, Meliponinae)
(Brill Academic Publishers, 1999-08-01)
In S. postica the hypopharyngeal glands are present in workers, males and queens. The glands of newly emerged workers are in a prefunctional phase, in nurse workers they reach their highest development and in forager workers ...