Event_Horizon hat geschrieben:Und in der Freien Natur mĂĽssen die Ameisen auch vom Futterplatz zum Nest laufen :-)
GruĂź
Eigentlich ein ziemlich interessanter Ansatz auf zwei Ebenen: 1. Wie schwer sollen es meine Ameisen haben (ob GrĂĽnderkolonie oder "ausgewachsen") an Nahrungsquellen zu gelangen? Jeder muss fĂĽr seine Nahrung in der Natur ja schlieĂźlich gewisse Schwierigkeiten in Kauf nehmen. Inwieweit sollte man dies in der Haltung (ohne dabei eine Dezimierung erzwingen zu wollen) in der Haltung umsetzen? Ob und ab wann es einen Unterschied macht, wenn in der Haltung alles "auf dem Silbertablett" serviert wird oder Erschwernisse dazu kommen?
2. Wie machen es Messor ĂĽberhaupt in freier Natur?
Zumindest was die "Länge, Gestalt und Typ von Ameisenstraßen" (meine Übersetzung des Zitats) angeht konnte ich das hier auf die Schnelle finden:
http://www.bioone.org/doi/abs/10.1603/0046-225X(2008)37%5B857%3AFSQRTT%5D2.0.CO%3B2
LG Frederick
Edit: Da der Link irgendwie nicht wirklich so will wie ich, hier das Zitat
Abstract
Animals principally forage to try to maximize energy intake per unit of feeding time, developing different foraging strategies. Temperature effects on foraging have been observed in diverse ant species; these effects are limited to the duration of foraging or the number of foragers involved. The harvester ant Messor barbarus L. 1767 has a specialized foraging strategy that consists in the formation of worker trails. Because of the high permeability of their body integument, we presume that the length, shape, and type of foraging trails of M. barbarus must be affected by temperature conditions. From mid-June to mid-August 1999, we tested the effect on these trail characteristics in a Mediterranean forest. We found that thermal stress force ants to use a foraging pattern based on the variation of the workers trail structure. Ants exploit earlier well-known sources using long physical trails, but as temperatures increases throughout the morning, foragers reduce the length of the foraging column gradually, looking for alternative food sources in nonphysical trails. This study shows that animal forage can be highly adaptable and versatile in environments with high daily variations.
Keywords: harvester ants, soil temperature, animal foraging, daily variations, trail system
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