Further Evidence of Lack of Pheromonal Inhibition among Queens of the Ant Leptothorax acervorum

Ethology ◽  
2010 ◽  
Vol 101 (1) ◽  
pp. 46-50 ◽  
Author(s):  
Andrew F. G. Bourke
Keyword(s):  
Leptothorax Acervorum

scholarly journals The Origin of Workerless Parasites inLeptothorax(S. Str.) (Hymenoptera: Formicidae)

1995 ◽  
Vol 102 (3-4) ◽  
pp. 195-214 ◽  
Author(s):  
Jürgen Heinze
Keyword(s):  
Chromosome Number ◽  
Evolutionary Origin ◽  
Social Parasites ◽  
Leptothorax Acervorum ◽  
Using Data

The evolutionary origin of workerless parasitic ants parasitizing colonies ofLeptothorax(s.str.) is investigated using data on morphology, chromosome number, and allozyme phenotype of both social parasites and their hosts. Of the three previously proposed pathways, the evolution of workerless parasites from guest ants or slave-makers is unlikely, at least according to a phenogram obtained by UPGMA clustering of Nei's similarities based on seven enzymes, lntraspecific evolution of the workerless parasitesDoronomyrmex goesswaldi, D. kutteri, andD. pacisfrom their common host,Leptothorax acervorumcannot be excluded with the present data. The workerless parasiteL. paraxenus, however, clearly differs from its host,L.cf.canadensis, in morphology and biochemistry, and most probably did not evolve from the latter species. It is proposed to synonymizeDoronomyrmexunderLeptothorax(s.str.).

Colony structure and reproduction in the ant, Leptothorax acervorum

1995 ◽  
Vol 6 (4) ◽  
pp. 359-367 ◽  
Author(s):  
Jürgen Heinze ◽  
Norbert Lipski ◽  
Kathrin Schlehmeyer ◽  
Bert Hōlldobler
Keyword(s):  
Colony Structure ◽  
Leptothorax Acervorum

scholarly journals Age and ovarian development are related to worker personality and task allocation in the ant Leptothorax acervorum

2014 ◽  
Vol 60 (3) ◽  
pp. 392-400 ◽  
Author(s):  
Stephan Kühbandner ◽  
Andreas P. Modlmeier ◽  
Susanne Foitzik
Keyword(s):  
Social Insects ◽  
Task Allocation ◽  
Older Workers ◽  
Ovarian Development ◽  
Brood Care ◽  
Age Polyethism ◽  
Behavioral Variation ◽  
Worker Behavior ◽  
Leptothorax Acervorum ◽  
And Task

Abstract In social insects, workers of different morphological castes and age are known to act differently. Yet, it is unclear how body size and ovarian development influence worker personalities (i.e. consistent behavioral variation) and task allocation in similar aged ant workers of monomorphic species. Behavioral variation is thought to be a key element of division of labor, but few studies have linked worker personality to task allocation. We investigated individual behavior in Leptothorax acervorum ant workers at two time points during the first three months of their life and in two different settings. We observed worker behavior in the nest (i.e. task allocation) and in standardized aggression, exploration and brood care experiments (i.e. personality) and found behavioral repeatability in foraging and exploration. Further, workers acted consistently across settings: workers with a more aggressive and exploratory personality type were more active in the nest. Moreover, ovarian development was associated with worker personality and task allocation: older workers with well-developed ovaries foraged less, but were more aggressive and exploratory. In accordance with the typical age-polyethism of social insects, workers became more active and foraged more as they grew older. Consequently, our study suggests that task allocation in Leptothorax acervorum is not only influenced by ovarian development and age, but moreover by the personalities of its workers.

scholarly journals Cooperation of Nature and Physiologically Inspired Mechanisms in Visualisation

2012 ◽  
pp. 31-58 ◽  
Author(s):  
Mohammad Majid al-Rifaie ◽  
Ahmed Aber ◽  
John Mark Bishop
Keyword(s):  
Swarm Intelligence ◽  
Hybrid Algorithm ◽  
Biological Mechanism ◽  
Biologically Inspired ◽  
Novel Approach ◽  
Biologically Inspired Algorithms ◽  
Leptothorax Acervorum ◽  
Nature Inspired Algorithms ◽  
Scientific Value ◽  
Stochastic Diffusion Search

A novel approach of integrating two swarm intelligence algorithms is considered, one simulating the behaviour of birds flocking (Particle Swarm Optimisation) and the other one (Stochastic Diffusion Search) mimics the recruitment behaviour of one species of ants – Leptothorax acervorum. This hybrid algorithm is assisted by a biological mechanism inspired by the behaviour of blood flow and cells in blood vessels, where the concept of high and low blood pressure is utilised. The performance of the nature-inspired algorithms and the biologically inspired mechanisms in the hybrid algorithm is reflected through a cooperative attempt to make a drawing on the canvas. The scientific value of the marriage between the two swarm intelligence algorithms is currently being investigated thoroughly on many benchmarks, and the results reported suggest a promising prospect (al-Rifaie, Bishop & Blackwell, 2011). It may also be discussed whether or not the artworks generated by nature and biologically inspired algorithms can possibly be considered as computationally creative.

Sex allocation ratios in the facultatively polygynous ant, Leptothorax acervorum

2001 ◽  
Vol 50 (3) ◽  
pp. 270-274 ◽  
Author(s):  
Heinze J. ◽  
Hartmann A. ◽  
Rüppell O.
Keyword(s):  
Sex Allocation ◽  
Leptothorax Acervorum

The significance of latitudinal variation in body size in a holarctic ant,Leptothorax acervorum

Ecography ◽  
2003 ◽  
Vol 26 (3) ◽  
pp. 349-355 ◽  
Author(s):  
Jürgen Heinze ◽  
Susanne Foitzik ◽  
Birgit Fischer ◽  
Tina Wanke ◽  
Vladilen E. Kipyatkov
Keyword(s):  
Body Size ◽  
Latitudinal Variation ◽  
Leptothorax Acervorum
Sign in / Sign up

Export Citation Format

Share Document