Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Animal Behaviour 36 (1988), S. 981-985 
    ISSN: 0003-3472
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 166 (1990), S. 545-552 
    ISSN: 1432-1351
    Keywords: Honeybees ; Learning ; Classical conditioning ; Selection ; Genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Four strains of the honeybee (Apis mellifera capensis), which were selected for high (N=2) or low (N=2) performance levels in classic conditioning of olfactory and mechanosensory stimuli, were examined in two instrumental visual learning tasks. Bees were trained to coloured cardboards either at the hive entrance or at the feeding station. Positive correlations were detected between olfactory/mechanosensory conditioning and visual learning. Good and poor learners from strains selected for olfactory conditioning differed significantly in their visual learning values. These strain differences reflect genetic differences in a common learning system rather than task specific differences in sensory, motor or motivational components. Parameters that were influenced by activity of the colony (duration of stay at the feeding place, time between visits) also differed among selected strains. These effects were not due to selection. Instead, they reflect a specific genetic background produced in each strain independently of selection. The results indicate that associative learning has a genetic basis which is independent of the sensory stimuli associated with reward, the learning procedure (classical conditioning or instrumental learning) or the motor patterns used to execute the learned behavior (proboscis extension, control for flight behavior, open field orientation).
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Behavior genetics 18 (1988), S. 119-132 
    ISSN: 1573-3297
    Keywords: Apis mellifera ; honeybees ; learning ; genetics ; heritability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract The learning behavior of Cape honeybees (Apis mellifera capensis) is examined using conditioning of the proboscis extension reflex. The bees are tested cumulatively with several learning tests. The genetic influence on differences in the learning scores is calculated by means of heritability (h 2) estimations obtained by different methods. Theh 2 values of the sum of the trials derived by each method range between 0.39 and 0.54. This shows that the proboscis extension reflex paradigm is suitable for the characterization and selection of genetic differences in learning behavior. Heritabilities in the narrow sense and in the broad sense are in the same range. The small differences obtained are discussed with respect to the type of selection existing in natural populations.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Behavior genetics 21 (1991), S. 271-294 
    ISSN: 1573-3297
    Keywords: Apis mellifera ; honeybees ; learning ; genetics ; selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Workers from colonies of Cape honeybees show marked phenotypic differences in performance in proboscis extension reflex (PER) conditioning. Analysis of these differences using parthenogenetic offspring groups permitted the estimation of genotypic values and revealed a high degree of genetic variability that is evident among related as well as unrelated bees. The results obtained from related groups are of particular importance, since they demonstrated the existence of strong genetic variability among individuals of the same colony. Quantitative analysis yielded high estimates of additive genetic effects and low estimates of dominance effects. Selection of individual workers resulted in an explicit increase in genetic variance of the next generation (G1). However, selection of bees from the parthenogenetic G1 generation, which was done to obtain parthenogenetic G2 offspring, did not lead to further improvement in selection. This observation suggests that recombination of linked genes underlying proboscis extension reflex was neglible during selection in parthenogenetic groups. Taken together with further behavioral analysis (Brandes and Menzel, 1990; Brandes et al., 1988), results from these quantitative genetic experiments suggest that additive genetic factors contribute significantly to variability among individuals for associative learning.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...