A reaction-diffusion model motivated by Proteus mirabilis swarm colony development is presented and analyzed in this work. The principal variables are the concentrations of swarm cells and swimmer cells, which are multicellular and single-cell forms, respectively, of the Proteus mirabilis bacteria. The kinetic terms model the growth and division process of the swimmer cells, as well as the form...

In swarming season, honeybee queens emit two kinds of queen piping signals: tooting and quacking. These signals are considered to be important for swarming, honeybees distinguish between the through differences in their temporal structures. this study, we revealed that species, Apis cerana mellifera, had different The A. consisted almost one long syllable, while mellifera was constructed from s...

The Vicsek model is a prototype for the emergence of collective motion. In free space, it is characterized by a swarm of particles all moving in the same direction. Since this dynamic does not include attraction among particles, the swarm, while aligning in velocity space, has no spatial coherence. Adding specular reflection at the boundaries generates global spatial coherence of the swarms whi...

The collection of wild larvae seed as a source of raw material is a major sub industry of shellfish aquaculture. To predict when, where and in what quantities wild seed will be available, it is necessary to track the appearance and growth of planktonic larvae. One of the most difficult groups to identify, particularly at the species level are the Bivalvia. This difficulty arises from the fact t...

When vegetative bacteria that can swim are grown in a rich medium on an agar surface, they become multinucleate, elongate, synthesize large numbers of flagella, produce wetting agents, and move across the surface in coordinated packs: they swarm. We examined the motion of swarming Escherichia coli, comparing the motion of individual cells to their motion during swimming. Swarming cells' speeds ...

We consider a compromise model in one dimension in which pairs of agents interact through first-order dynamics that involve both attraction and repulsion. In the case of all-to-all coupling of agents, this system has a lowest energy state in which half of the agents agree upon one value and the other half agree upon a different value. The purpose of this paper is to study the behavior of this c...

This paper presents a searching and targetlocating algorithm for a group of agents moving in a swarm and sensing potential targets. The aim of the algorithm is to use these agents to efficiently search for and locate targets with a finite sensing radius in some bounded area. We present an algorithm that both controls agent movement and analyzes sensor signals to determine where targets are loca...