scholarly journals Trail-Laying Behaviour as a Function of Resource Quality in the AntCamponotus rufipes

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Pablo E. Schilman
Keyword(s):  
Food Quality ◽  
Food Source ◽  
Resource Quality ◽  
Nectar Feeding ◽  
Trail Marking ◽  
Sucrose Solutions ◽  
Trail Laying ◽  
Camponotus Rufipes ◽  
Marking Behaviour

Chemical trails have been shown to act as an orientation cue in some ant species. Here, I report that the trail-laying behaviour in the nectar-feeding ant,Camponotus rufipes, varies with the concentration of the sucrose solutions collected. Single workers collected solutions of different sucrose concentrations (5%, 20%, and 40% in weight) during 4 consecutive visits to the resource, and their trail-marking behaviour was recorded on soot-coated slides during their first and last visits. Results suggest that these chemical trails provide both an orientation cue between the nest and the food source, as previously suggested forCamponotusants, as well as information about food quality.

scholarly journals Quality of Food Source Affects Female Visitation and Display Rates of Male Broad-Tailed Hummingbirds

The Condor ◽  
2003 ◽  
Vol 105 (3) ◽  
pp. 603-606 ◽  
Author(s):  
Alaine F. Camfield
Keyword(s):  
Food Source ◽  
Resource Quality ◽  
Visitation Rates ◽  
Sucrose Solutions ◽  
Male Display ◽  
Selasphorus Platycercus ◽  
Quality Of Food ◽  
Para Determinar ◽  
The Relationship

Abstract I studied the relationships among energy availability, female visitation rates, and male display rates in Broad-tailed Hummingbirds (Selasphorus platycercus). Feeders contained 10%, 20%, or 30% sucrose solutions; female visitation rates and male hummingbird display rates were measured. Display rates of male Broad-tailed Hummingbirds and visitation rates of females depended on the quality of the food source. The fact that male display rates matched female visitation rates provides further evidence that dive displays play a role in courtship. More work needs to be done to determine if the relationship between resource quality, female visitation, and male display rates shows a threshold contingent on food availability. La Calidad de los Recursos Alimenticios Afecta las Tasas de Visita de las Hembras y de Despliegues de Cortejo de los Machos en Selasphorus platycercus Resumen. Evalué las relaciones entre la cantidad de energía disponible, la tasa de despliegues de cortejo por parte de los machos y la tasa de visita por parte de las hembras en Selasphorus platycercus. Para los comederos utilicé soluciones de agua azucarada en concentraciones de 10%, 20% ó 30%, y medí las tasas de visita de las hembras y de despliegues de cortejo de los machos en cada período de observación (1 hora por período). Las tasas de cortejo de los machos y de visita de las hembras dependieron de la calidad de los recursos alimenticios. El hecho de que las tasas de despliegue de los machos se relacionaran directamente con las tasas de visita de las hembras indica la importancia de los despliegues de caída libre durante el cortejo en esta especie. Se necesitan más investigaciones para determinar si la relación entre la calidad de recursos alimenticios, las visitas de las hembras y las tasas de despliegue presenta un límite relacionado con la disponibilidad de alimento por encima del cual la forma de esta relación se modifica.

Efficiency of facultative frugivory in the nectar-feeding bat Glossophaga commissarisi: the quality of fruits as an alternative food source

2008 ◽  
Vol 178 (8) ◽  
pp. 985-996 ◽  
Author(s):  
Detlev H. Kelm ◽  
Juliane Schaer ◽  
Sylvia Ortmann ◽  
Gudrun Wibbelt ◽  
John R. Speakman ◽  
...  
Keyword(s):  
Food Source ◽  
Alternative Food ◽  
Nectar Feeding ◽  
Alternative Food Source

Death in the Distance: Mortality Risk as Information for Foraging Ants

Behaviour ◽  
1990 ◽  
Vol 112 (1-2) ◽  
pp. 23-35 ◽  
Author(s):  
Peter Nonacs
Keyword(s):  
Food Quality ◽  
Mortality Risk ◽  
Food Source ◽  
Critical Factor ◽  
High Rate ◽  
Food Patch ◽  
Lasius Pallitarsis ◽  
Access To Food ◽  
The Way

AbstractAnt foragers are known to communicate food presence in distant patches, but do they also communicate information about distant mortality risk? Recruitment to a food source in a laboratory Lasius pallitarsis colony depended upon whether the initial returning foragers had encountered mortality risk (a larger Formica subnuda) and the quality of the food they found. When food quality was high, risk appeared to not affect recruitment; when quality was low, risk inhibited foraging. In a second experiment, L. pallitarsis colonies had access to food of several qualities through a divided trail, which forced foragers to take different routes to and from the food patch. Danger was either entirely absent, present only on the way to the patch, present only on the way from the patch, or along both routes. When food quality was poor colonies recruited to food when risk was absent, but risk anywhere significantly reduced the level of foraging. This included the situation where only returning foragers could encounter danger, which strongly suggests that their behaviour was a critical factor in whether nestmates would continue foraging. When food quality was moderate, only treatments with risk on the way to the food significantly inhibited foraging. When food quality was good, colonies continued to forage at a high rate, irrespective of presence or location or risk. In total, L. pallitarsis foragers appear to communicate and use information about both food and mortality risk in deciding whether to exploit patches.

scholarly journals The Bayesian Superorganism: externalised memories facilitate distributed sampling

2018 ◽  
Author(s):  
Edmund R. Hunt ◽  
Nigel R. Franks ◽  
Roland J. Baddeley
Keyword(s):  
Probability Distributions ◽  
Computational Cost ◽  
Cuticular Hydrocarbon ◽  
Sampling Technique ◽  
Central Place ◽  
Movement Trajectories ◽  
Trail Marking ◽  
Marking Behaviour ◽  
Distributed Sampling ◽  
Collective Information

AbstractA key challenge for any animal (or sampling technique) is to avoid wasting time by searching for resources (information) in places already found to be unprofitable. In biology, this challenge is particularly strong when the organism is a central place forager – returning to a nest between foraging bouts – because it is destined repeatedly to cover much the same ground. This problem will be particularly acute if many individuals forage from the same central place, as in social insects such as the ants. Foraging (sampling) performance may be greatly enhanced by coordinating movement trajectories such that each ant (‘walker’) visits separate parts of the surrounding (unknown) space. We find experimental evidence for an externalised spatial memory in Temnothorax albipennis ants: chemical markers (either pheromones or cues such as cuticular hydrocarbon footprints) that are used by nestmates to mark explored space. We show these markers could be used by the ants to scout the space surrounding their nest more efficiently through indirect coordination. We also develop a simple model of this marking behaviour that can be applied in the context of Markov chain Monte Carlo methods (Baddeley et al. 2019). This substantially enhances the performance of standard methods like the Metropolis–Hastings algorithm in sampling from sparse probability distributions (such as those confronted by the ants) with little additional computational cost. Our Bayesian framework for superorganismal behaviour motivates the evolution of exploratory mechanisms such as trail marking in terms of enhanced collective information processing.

Food Quality and Safety Regulation Systems at a Glance

2021 ◽  
pp. 1-19
Author(s):  
Dixit V. Bhalani ◽  
Arvind Kumar Singh Chandel ◽  
Poonam Singh Thakur
Keyword(s):  
Food Quality ◽  
Food Source ◽  
Safety Management ◽  
Food Products ◽  
Quality And Safety ◽  
Safety Regulation ◽  
Management Issue ◽  
Essential Parameter ◽  
Food Quality And Safety

The quality and safety of all food products are the essential parameter for both ends manufactures and end consumers. This parameter of the food products we cannot overlook or liberalize in any situation. More than two-thirds of diseases are spread through the contaminated or spoiled food source. Looking at the importance of quality and safety management issue, the various governments made a series of rules and regulations for the assessment of food products. This chapter explains the role of various assessment agencies and their rights and workflows.

Food Quality and Safety Regulation Systems at a Glance

2019 ◽  
pp. 275-293
Author(s):  
Dixit V. Bhalani ◽  
Arvind Kumar Singh Chandel ◽  
Poonam Singh Thakur
Keyword(s):  
Food Quality ◽  
Food Source ◽  
Safety Management ◽  
Food Products ◽  
Quality And Safety ◽  
Safety Regulation ◽  
Management Issue ◽  
Essential Parameter ◽  
Food Quality And Safety

The quality and safety of all food products are the essential parameter for both ends manufactures and end consumers. This parameter of the food products we cannot overlook or liberalize in any situation. More than two-thirds of diseases are spread through the contaminated or spoiled food source. Looking at the importance of quality and safety management issue, the various governments made a series of rules and regulations for the assessment of food products. This chapter explains the role of various assessment agencies and their rights and workflows.

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