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My son (he's 12) is currently infatuated with ants, he bought a colony from a GAN farmer through AntsCanada and is watching his videos all the time (they are gr
by Jun8 7y ago
My son (he's 12) is currently infatuated with ants, he bought a colony from a GAN farmer through AntsCanada and is watching his videos all the time (they are great, by the way). We checked out Holldobler and Wilson's epic tome Ants (it's too expensive, even for a used copy, but a beautiful, large volume) but he found Wilson's Journey to the Ants much more readable, he's going through it page by page, taking notes, which I've never seen him to with a book before.
So, this led to some ant-related discussions with him. Did you know that ant colonies can have memories older than individual ants? (see this great Ted talk: https://www.ted.com/talks/deborah_gordon_digs_ants?language=en https://www.ted.com/talks/deborah_gordon_digs_ants?language=...) The bizarre concept of eusociality also came up, how did such a thing involve? If ants (and termites and bees) are so successful with this strategy why wasn't it adopted by more species? According to https://en.wikipedia.org/wiki/Eusociality https://en.wikipedia.org/wiki/Eusociality very few animals other than these exhibit eusociality (humans aside, which presents a complicated case).
There's fierce debate about the evolution of eusocial behavior, kin selection vs. other explanations. Wilson's theory presented in his 2010 Nature paper, co-written with two mathematical biologists [1], seems to be at odds with others and generated a strong reaction from other researchers [2] (see this Quora answer for a high-level intro to this technical discussion: https://www.quora.com/Does-EO-Wilson-Corina-Tarnita-and-Martin-Nowaks-paper-on-eusociality-spell-the-death-of-gene-level-selection-in-evolutionary-biology https://www.quora.com/Does-EO-Wilson-Corina-Tarnita-and-Mart...).
My son is planning to put his mark on this debate in next year's science fair by trying to measure DNA similarity of worker ants from his colony :-)
[1] https://www.nature.com/articles/nature09205 https://www.nature.com/articles/nature09205
[2] https://www.nature.com/articles/nature09836 https://www.nature.com/articles/nature09836
- jly 7y ago> very few animals other than these exhibit eusociality (humans aside, Technically, humans are not eusocial, which by definition requires a biological division of reproductive labor. Most eusocial species actually have significant morphological differences in their classes (i.e. females that physically can or cannot reproduce). Wilson tends to repeat the idea of humans and other primates as eusocial which I find confusing. Eusociality and its evolution is indeed a fascinating topic. There are some great discussions on this from WD Hamilton (the study of led him to inclusive fitness theory and kin selection) and Richard Alexander (who discovered the only eusocial mammal - the naked mole-rat).
- lazzlazzlazz 7y ago> humans are not eusocial, which by definition requires a biological division of reproductive labor Wouldn't the biological division of labor regarding breast-feeding in humans be sufficient? It's a significant morphological difference.
- MaxBarraclough 7y agoNot sure why you're being downvoted. You're right of course that the male/female distinction of sexual reproduction is in itself is a clear case of 'biological division of reproductive labor'. Child-bearing itself is an even clearer example than breast-feeding. I'm not sure jly was really getting at the core aspects of eusociality there. Humans aren't eusocial, but we certainly have division of reproductive labor. So do non-social sexual species.