1. The study of behavioural variability has a long research tradition in social insects. Because their contribution to division labour, between-individual variations have been mostly studied within the worker caste. In contrast, level variation between queens much less studied. 2. ants, high could contribute ecological success invasive species by favouring colonisation new environments. 3. ant ...

Ant colonies are complex biological systems that respond to changing conditions in nature by solving dynamic problems. Their ability of decentralized decision-making and their self-organized trail systems have inspired computer scientists since 1990s, and consequently initiated a class of heuristic search algorithms, known as ant colony optimization (ACO) algorithms. These have proven to be ver...

Borderline Ki?ilik Bozuklu?u (BKB), duygulan?mda dalgalanmalar?n, ki?ileraras? ili?kilerde dengesizli?in ve benlik karma?as?yla beraber dürtüsel davran??lar?n oldu?u bir psikiyatrik bozukluktur. BKB tan?s? alm?? olan bireylerin, tutars?z davran??lar?n?n varl??? ki?iler aras? ili?kilerdeki i?lev kayb? zorlanmalara neden olmaktad?r. Bireyin kendisini kar??s?ndaki bireyin yerine koyarak, ilgili du...

Abstract Ancestral eusocial insect societies were probably headed by a single and singly mated reproductive queen. However, Hymenoptera have since secondarily evolved highly diverse mating systems social structures, which include multiple queens, the coexistence of several queens within given colony, queen replacement over time. Here, we report pronounced plasticity in sociogenetic structure st...

I t has recently been observed that many weeks after injection of small amounts of antigen, removal of ant ibody from the circulation results in a specific, secondary-type, ant ibody response (1, 2). This observation suggests that a dynamic equilibrium between persisting immunogen and circulating antibody regulates the immune response (3), and further, that immunocompetent cells can capture ant...

Aim I examined the island biogeography and metapopulation dynamics of ants inhabiting two archipelagos of small Bahamian islands. Of particular interest were measurement and comparison of turnover rates, examination of variation in relative population abundances, and the effect of a hurricane force disturbance on the ant fauna of these small islands. Location Archipelagos of small islands in th...

This paper proposes an enhanced ant colony optimization with dynamic mutation and ad hoc initialization, ACODM-I, for improving the accuracy of Takagi-Sugeno-Kang- (TSK-) type fuzzy systems design. Instead of the generic initialization usually used in most population-based algorithms, ACODM-I proposes an ad hoc application-specific initialization for generating the initial ant solutions to impr...

The ant-tended Australian butterfly, Jalmenus evagoras, has been a model system for studying the ecology and evolution of mutualism. A phylogeographic analysis of mitochondrial DNA cytochrome oxidase I sequences from 242 butterflies (615 bp) and 66 attendant ants (585 bp) from 22 populations was carried out to explore the relationship between ant association and butterfly population structure. ...

This chapter introduces a new algorithm for classification, named AntMiner+, based on an artificial ant system with inherent self-organizing capabilities. The usage of ant systems generates scalable data mining solutions that are easily distributed and robust to failure. The introduced approach differs from the previously proposed AntMiner classification technique in three aspects. Firstly, Ant...

In this paper, we propose a new kind of ant algorithm called Ant Local Search. In most ant algorithms, the role of each ant is to build a solution in a constructive way. In contrast, we propose to consider each ant as a local search, where at each step and in concordance with all ant algorithms, each ant modifies the current solution by the use of the greedy force and the trail systems. We also...