If you decided to build a quite a little , where would you put your young ? Would you stick them in the midsection of the raft to protect them , or place them around the basis of the muckle to help it float ? That depends on whether you ’re an ant .
Many species of flood plain - dwelling antsform rafts to browse the flood Ethel Waters , and a young newspaper published inPLOS ONElooks specifically at the position of pismire of different castes in those hatful . The researchers collected fellow member of Formica selysi and canvass how they form mass when pismire of dissimilar castes and unlike floaty materials are uncommitted . They expected that the ants would protect the most vulnerable or valuable members of the group by post them in the center of the plenty , and they did find that the queen was always placed at the middle of the peck out of the water . However , they were surprised to discover that member of the brood were always placed at the base pot , even if there were enough adult workers to keep the brood items out of the water .
https://gizmodo.com/how-masses-of-swimming-fire-ants-capture-oxygen-bubbles-5795862

So why put babe on the bottom ? For one thing , the researcher observed very short fatality rate in these dozens , suggesting that , even after being submerged for foresighted period of time , the brood items are not at risk for death . The brood items also happen to be more buoyant than the grownup emmet , suggesting they may serve as better floatation equipment . Another opening is that it ’s important to keep a sure proportion of grownup worker ants above the water , so that , once the need for the raft has passed , they can recuperate more quick and get to back to employment while the brood rests from its rafting escapade .
Photo fromPLOS ONE .
Ant Brood Function as Life Preservers during Floods[PLOS ONE viaPhysOrg ]

Biology
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