UNi Logo
UNi Logo UNi Logo UNi Logo UNi Logo

Über diesen Blog.

Hier schreiben Wissenschaftler*innen der Universität Oldenburg und Gastautor*innen darüber, wie sich Gesellschaften selbst wahrnehmen und thematisieren, sich ihrer jeweiligen Gegenwart vergewissern und dabei in die Zukunft entwerfen.

Wie stehen diese Selbstwahrnehmungen und -entwürfe mit Institutionen, Medien und Techniken zur Gestaltung von Natur, Gesellschaft und Subjektivität in Verbindung? Wie modellieren sie den lebensweltlichen Alltag und halten Menschen zu einem bestimmten Verhalten an? Wie werden diese Interventionen in das Gegebene begründet und legitimiert, aber auch kritisiert, verworfen oder unterlaufen?

Diesen Fragen, deren interdisziplinäre Reflexion eines der zentralen Anliegen des Wissenschaftlichen Zentrums „Genealogie der Gegenwart“ ist, gehen die Blogger aus unterschiedlichen Fachperspektiven und Tätigkeitszusammenhängen mit Blick auf kontrovers verhandelte Themen wie Migration, Ungleichheit, Digitalisierung, Kriminalität, Gesundheit und Ökologie nach.

cupid visitors

An important facet of an excellent predator-victim relationships ‘s the direct impact the predation has on variety of their victim

von Team

There are virtually countless samples of predator-victim relationships. A few of them will be lion-zebra, bear-fish, and you may fox-bunny. A herb can also be sufferer. Bears, instance, feed on fruit, a bunny feeds to the lettuce, and you will a grasshopper feeds towards the makes.

Predators and sufferer exist certainly one of perhaps the greatest lifestyle forms towards World, single-celled organisms titled germs. The new bacteria Bdellovibrio feed on most other bacterium that are bioluminescent (it generate interior light because of a substance response). Indeed, the study out-of Bdellovibrio predation shows a great amount of the brand new mechanics away from predation and how brand new predator and you may sufferer populations fluctuate in the amount over the years in an associated trends.

Predator and you may target populations perform dynamically to each other. If the variety of a prey such rabbits explode, the abundance at this number of meals strings helps highest amounts of predator populations such foxes. Should your bunny population is over-rooked or drops because of situation or other calamity, the fresh new predator inhabitants will quickly refuse. Over the years, the two populations course along within the count.

In many high organisms, brand new sufferer will likely be slain because of the predator before eating. Such, an effective cheetah usually stalk, rundown, and you will destroy its target (for example this new gazelle, wildebeest, springbok, impala, and you may zebra). Having said that, seafood and seals that will be new victim of a few species of shark try samples of prey that’s provided to the when you are nonetheless live.

Historical History and you will Scientific Fundamentals

Predators and you will prey features advanced together with her, as well as their matchmaking was ancient. For example, fossils going back nearly eight hundred billion years keeps revealed facts that extinct pet also known as Hederellids have been the victim regarding an as but really not familiar animal that murdered her or him because of the drilling openings by way of their tubular shells.

As the kinds build and you will blossomed, other kinds rooked her or him because their dinner. A kinds that is a successful predator and has now live is promoting several otherwise plenty of methods to acquire the latest target. The newest predator can use rates; stealth (the capacity to approach undetected by being silent and you can intentional when you look at the its moves, or of the addressing off upwind); camouflage; a very install feeling of smell, eyes, or hearing; threshold so you can poison developed by the latest prey; production of its own victim-eliminating poison; or a physiology that enables the new target getting ate or broken down. While doing so, this new sufferer features techniques to make it avoid being slain from the good predator. A target types can also utilize the the latter characteristics listed to have the new predator to cease being trapped and you can slain.

The fitness of the latest sufferer inhabitants-how many somebody about people, chance of to be able to reproduce, and you will threat of success-try subject to cupid this new predator population.

Predator–Prey Relationships

The methods in which predators stem, destroy, and feast upon its target can be utilized for the a classification program. A very-named genuine predator kills the fresh victim immediately after which feeds with it. Correct predation constantly does not involve harm to brand new victim past in order to dying. Such as, prior to are chased down and slain from the a good cheetah, an effective gazelle try fit. Cattle one to graze to the lawn are not noticed a predator-victim relationship, since the merely the main lawn was consumed, on unchanged root enabling re-development of this new grassy stalk to take place.

A great predator and its own victim is also one another getting microscopic, as it is the way it is into the bacteria Bdellovibrio or any other Gram-negative micro-organisms. However,, the size difference between predator as well as target will be tremendous. An illustration ‘s the Bowhead whale, and therefore is located at up to 65 foot (20 yards) in total, however, whose emergency is based on straining making use of their baleen (bony formations on whale’s mouth) scores of tiny zooplankton you to come to only numerous centimeters in total.

Diskussion einblenden/ausblenden

Bis jetzt noch keine Kommentare.

Einen Kommentar abgeben