Testing genetic variance hypotheses for the evolution of polyandry in the honeybee (Apis mellifera L.)

2000 ◽  
Vol 47 (3) ◽  
pp. 271-279 ◽  
Author(s):  
P. Neumann ◽  
R.F.A. Moritz
Keyword(s):  
Apis Mellifera ◽  
Genetic Variance ◽  
Evolution Of Polyandry

Genetic variance of mating frequency in the honeybee (Apis mellifera L.)

2005 ◽  
Vol 52 (1) ◽  
pp. 1-5 ◽  
Author(s):  
F. B. Kraus ◽  
P. Neumann ◽  
R. F. A. Moritz
Keyword(s):  
Apis Mellifera ◽  
Genetic Variance ◽  
Mating Frequency

Variation in the Components of Head Extracts of Workers and Queens of Apis mellifera intermissa Buttel-Reepen

1989 ◽  
Vol 44 (7-8) ◽  
pp. 590-596 ◽  
Author(s):  
Robin M. Crewe ◽  
Robin F. A. Moritz
Keyword(s):  
Quantitative Analysis ◽  
Apis Mellifera ◽  
Functional Significance ◽  
Genetic Variance ◽  
Component Composition ◽  
Apis Mellifera Intermissa

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.

Differentiation Processes of the Ocellar Retina of the Honeybee (Apis Mellifera L.)

1990 ◽  
Vol 48 (3) ◽  
pp. 430-431
Author(s):  
Maria Anna Pabst
Keyword(s):  
Apis Mellifera ◽  
Distal Part ◽  
Cell Layer ◽  
Single Layer ◽  
Photoreceptor Cells ◽  
Distal Segment ◽  
Compound Eyes ◽  
Thin Sections ◽  
Ultrastructural Studies ◽  
Adult Worker

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).

УГРОЗЫ РАСПРОСТРАНЕНИЯ ВИРУСНЫХ ИНФЕКЦИЙ У ПЧЕЛ (Apis mellifera L.) И РОЛЬ КЛЕЩА Varroa destructor В РАЗВИТИИ ПАТОЛОГИЙ

2016 ◽  
Vol 51 (2) ◽  
pp. 156-171
Author(s):  
А.В. СПРЫГИН ◽  
◽  
Ю.Ю. БАБИН ◽  
Е.М. ХАНБЕКОВА ◽  
Л.Е. РУБЦОВА ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Varroa Destructor
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