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Related Concept Videos

Short-distance Transport of Resources02:12

Short-distance Transport of Resources

Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
Social Traps01:41

Social Traps

Social traps are negative situations where people get caught in a direction or relationship that later proves to be unpleasant, with no easy way to back out of or avoid. The concept was orignally introduced by John Platt who applied psychology to Garrett Hardin's "Tragedy of the Commons", where in New England herd owners could let their cattle graze in the common ground. This situation seems like a good idea, but an individual could have an advantage. If they owned more cows, the larger...
Microbial Interactions: Competition01:26

Microbial Interactions: Competition

Microbial competition is an ecological interaction in which microorganisms vie for limited resources within shared environments. These resources may include nutrients, space, or light, depending on the system. The intensity and outcome of competition are influenced by the environmental context, such as nutrient availability, spatial constraints, and the diversity of microbial species present. These competitive interactions significantly influence the structure, function, and resilience of...
Distribution and Dispersion00:54

Distribution and Dispersion

Ecology is the study of how organisms interact with their environment and with one another. An important aspect of ecology is understanding where species are found and how individuals are distributed within those areas. The geographic range of a species refers to the total area where its members are located, while dispersion describes the pattern of spacing of individuals within that range.Geographic Range and Dispersion PatternsWithin a species’ geographic range, individuals may be distributed...
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
Social Exchange Theory02:06

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Related Experiment Videos

Panhandling: sharing of resources.

J S Lockard, L L McDonald, D A Clifford

    Science (New York, N.Y.)
    |January 30, 1976
    PubMed
    Summary

    Resource sharing in animals was studied using panhandling. Male animals were more successful in spring, while females were more successful in autumn, especially when approaching those eating.

    Area of Science:

    • Animal behavior
    • Evolutionary biology
    • Behavioral ecology

    Background:

    • Resource sharing is crucial for animal survival and social dynamics.
    • Understanding the factors influencing food acquisition and sharing provides insights into social structures.
    • Panhandling, a form of food solicitation, offers a model to study these interactions.

    Purpose of the Study:

    • To investigate the dynamics of resource sharing through observational study of panhandling behavior.
    • To determine seasonal and sex-specific differences in the success of panhandling.
    • To identify specific conditions and social contexts that affect the success rate of panhandling.

    Main Methods:

    • Observational study of panhandling behavior in a wild population.
    • Recording the sex of the panhandler and the target individual.

    Related Experiment Videos

  • Noting the season (spring vs. autumn) and the target's feeding status.
  • Analyzing success rates based on these variables.

    • Main Results:

    • Male panhandlers achieved higher success rates during the spring season.
    • Female panhandlers outperformed males during the autumn season.
    • Panhandling was most successful when individuals submissively approached those who were actively eating.
    • Families and mixed-sex pairs exhibited resistance to panhandling attempts.

    Conclusions:

    • Seasonal and sex-based strategies influence resource acquisition through panhandling.
    • Submissive solicitation towards feeding individuals is an effective tactic.
    • Social units like families and pairs present challenges for panhandlers, possibly due to kin selection or social cohesion.