Estimating the genetic variance of group characters: social behaviour of honeybees (Apis mellifera L.)

1986 ◽  
Vol 72 (4) ◽  
pp. 513-517 ◽  
Author(s):  
R. F. A. Moritz
2013 ◽  
Vol 3 (2) ◽  
pp. 80-86
Author(s):  
Muzafar Shah ◽  
Mian Sayed Khan ◽  
Muhammad Ather Rafi ◽  
Sardar Azhar Mehmood ◽  
Muhammad Farooq

2005 ◽  
Vol 52 (1) ◽  
pp. 1-5 ◽  
Author(s):  
F. B. Kraus ◽  
P. Neumann ◽  
R. F. A. Moritz

1989 ◽  
Vol 44 (7-8) ◽  
pp. 590-596 ◽  
Author(s):  
Robin M. Crewe ◽  
Robin F. A. Moritz

Quantitative analysis of nine major com ponents of the head extracts of workers and queens of Apis mellifera intermissa was carried out. Q ueen and worker component patterns were distinct. The patterns of both castes changed with age, and the worker patterns were also affected by being reared in the absence of a queen. The genetic variance of the component composition of the extracts was found to be higher in the queens than the workers. This may have functional significance in the recognition by workers of their own queen.


2020 ◽  
Vol 43 ◽  
Author(s):  
Julian Kiverstein ◽  
Erik Rietveld

Abstract Veissière and colleagues make a valiant attempt at reconciling an internalist account of implicit cultural learning with an externalist account that understands social behaviour in terms of its environment-involving dynamics. However, unfortunately the author's attempt to forge a middle way between internalism and externalism fails. We argue their failure stems from the overly individualistic understanding of the perception of cultural affordances they propose.


Author(s):  
Maria Anna Pabst

In addition to the compound eyes, honeybees have three dorsal ocelli on the vertex of the head. Each ocellus has about 800 elongated photoreceptor cells. They are paired and the distal segment of each pair bears densely packed microvilli forming together a platelike fused rhabdom. Beneath a common cuticular lens a single layer of corneagenous cells is present.Ultrastructural studies were made of the retina of praepupae, different pupal stages and adult worker bees by thin sections and freeze-etch preparations. In praepupae the ocellar anlage consists of a conical group of epidermal cells that differentiate to photoreceptor cells, glial cells and corneagenous cells. Some photoreceptor cells are already paired and show disarrayed microvilli with circularly ordered filaments inside. In ocelli of 2-day-old pupae, when a retinogenous and a lentinogenous cell layer can be clearly distinguished, cell membranes of the distal part of two photoreceptor cells begin to interdigitate with each other and so start to form the definitive microvilli. At the beginning the microvilli often occupy the whole width of the developing rhabdom (Fig. 1).


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