scholarly journals Route reassessment by transporter ants improves speed and directional accuracy of cooperative transport in Formica japonica

2019 ◽  
Vol 38 (1) ◽  
pp. 107-116
Author(s):  
Shumpei Hisamoto ◽  
Natsumi Hosaka ◽  
Yuka Matsunami ◽  
Hideo Iwasaki
Keyword(s):  
Food Item ◽  
Directional Accuracy ◽  
Cooperative Transport ◽  
Navigation Information

AbstractEncircling cooperative transport in ants is categorized into coordinated and uncoordinated types. Coordinated cooperative transport is considered to be advantageous for ants because it transports food quickly without creating a deadlock. Contrarily, uncoordinated transport is slow and frequently becomes deadlocked. This study assessed the characteristics of uncoordinated cooperative transport, which has scarcely been studied before, through experiments performed on Formica japonica. Based on our experiment and analysis, we report that the transport speed remains unchanged with the number of transporters. We also found that pulling transporter ants often left the food item transiently as the transport speed decreased, and then went back to the item. Upon rejoining transport, the transport speed increased. This is presumably because the ants gain navigation information during the period that they leave the food. We propose that this ‘route reassessment’ behavior is important for transport coordination and navigation in F. japonica.

scholarly journals Correction to: Route reassessment by transporter ants improves speed and directional accuracy of cooperative transport in Formica japonica

2020 ◽  
Author(s):  
Shumpei Hisamoto ◽  
Natsumi Hosaka ◽  
Yuka Matsunami ◽  
Hideo Iwasaki
Keyword(s):  
Open Access ◽  
Directional Accuracy ◽  
Cooperative Transport

The article Route reassessment by transporter ants improves speed and directional accuracy of cooperative transport in Formica japonica, written by Shumpei Hisamoto, Natsumi Hosaka, Yuka Matsunami, Hideo Iwasaki, was originally published Online First without Open Access.

Cooperative Transport by Insects and Robots

1999 ◽  
Author(s):  
Eric Bonabeau ◽  
Marco Dorigo ◽  
Guy Theraulaz
Keyword(s):  
Problem Solving ◽  
Prey Item ◽  
Direct Contact ◽  
Food Item ◽  
Large Prey ◽  
Formal Description ◽  
Trail Laying ◽  
Cooperative Transport ◽  
Robotic Architecture ◽  
Insight Into

Collective robotics is a booming field, and cooperative transport—particularly cooperative box-pushing—has been an important benchmark in testing new types of robotic architecture. Although this task in itself is not especially exciting, it does provide insight into the design of collective problem-solving robotic systems. One of the swarm-based robotic implementations of cooperative transport that seems to work well is one that is closely inspired by cooperative prey retrieval in social insects. Ants of various species are capable of collectively retrieving large prey that are impossible for a single ant to retrieve. Usually, a single ant finds a prey item and tries to move it alone; when successful, the ant moves the item back to the nest. When unsuccessful, the ant recruits nestmates through direct contact or trail laying. If a group of ants is still unable to move the prey item for a certain time, specialized workers with large mandibles may be recruited in some species to cut the prey into smaller pieces. Although this scenario seems to be fairly well understood in the species where it has been studied, the mechanisms underlying cooperative transport—that is, when and how a group of ants move a large prey item to the nest—remain unclear. No formal description of the biological phenomenon has been developed, and, surprisingly, roboticists went further than biologists in trying to model cooperative transport: perhaps the only convincing model so far is one that has been introduced and studied by roboticists [207] and, although this model was not aimed at describing the behavior of real ants, few adjustments would be required to make it biologically plausible. This chapter first describes empirical research on cooperative transport in ants, and then describes the work of Kube and Zhang [205, 206,207, 209]. A small prey or food item is easily carried by a single ant.

CURRENT STATE AND DEVELOPMENT PERSPECTIVES OF THE CASPIAN SPRAT FISHERIES

2018 ◽  
pp. 69-75
Author(s):  
Tatiana Vasilievna Pomogaeva ◽  
Aliya Ahmetovna Aseinova ◽  
Yuriy Aleksandrovich Paritskiy ◽  
Vjacheslav Petrovich Razinkov
Keyword(s):  
Food Item ◽  
Growth Potential ◽  
North West ◽  
Marine Fishery ◽  
The North ◽  
Current State ◽  
West Part ◽  
Eggs And Larvae ◽  
Intensive Growth

The article presents annual statistical data of the Caspian Research Institute of Fishery. There has been kept track of the long term dynamics of the stocks of three species of Caspian sprat (anchovy, big-eyed kilka, sprat) and investigated a process of substituting a food item of sprats Eurytemora grimmi to a small-celled copepod species Acartia tonsa Dana. According to the research results, there has been determined growth potential of stocks of each species. Ctenophoran-Mnemiopsis has an adverse effect on sprat population by eating fish eggs and larvae. Ctenophoram - Mnemiopsis is a nutritional competitor to the full-grown fishes. The article gives recommendations on reclamation of stocks of the most perspective species - common sprat, whose biological characteristics helped not to suffer during Ctenophoram outburst and to increase its population during change of the main food item. Hydroacoustic survey data prove the intensive growth of common sprat biomass in the north-west part of the Middle Caspian. According to the results of the research it may be concluded that to realize the volumes of recommended sprat catch it is necessary to organize the marine fishery of common sprat at the Russian Middle Caspian shelf.

Cooperative Transport of a Nonwetting Liquid in a Random System of Pores

JETP Letters ◽  
2021 ◽  
Vol 113 (6) ◽  
pp. 378-383
Author(s):  
V. D. Borman ◽  
A. A. Belogorlov ◽  
I. V. Tronin
Keyword(s):  
Random System ◽  
Nonwetting Liquid ◽  
Cooperative Transport

The Impact of Crowding on Calorie Consumption

2017 ◽  
Vol 44 (5) ◽  
pp. 1123-1140 ◽  
Author(s):  
Stefan J Hock ◽  
Rajesh Bagchi
Keyword(s):  
Consumer Behavior ◽  
Food Item ◽  
Affective Processing ◽  
Environmental Cues ◽  
Calorie Consumption ◽  
Managerial Implications ◽  
The Impact ◽  
Specific Reason ◽  
Human Crowding ◽  
Rule Out

Abstract Consumer behavior is often influenced by subtle environmental cues, such as temperature, color, lighting, scent, or sound. We explore the effects of a not-so-subtle cue—human crowding—on calorie consumption. Although crowding is an omnipresent factor, it has received little attention in the marketing literature. We present six studies showing that crowding increases calorie consumption. These effects occur because crowding increases distraction, which hampers cognitive thinking and evokes more affective processing. When consumers process information affectively, they consume more calories. We show the specific reason for the increase in calories. When given a choice between several different options, people select and eat higher-calorie items, but when presented with only one option, people eat more of the same food item. We document this process, rule out alternative explanations, and discuss theoretical and managerial implications.

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