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Anonymous

eusocial insects....
    #2916752 - 07/22/04 05:57 PM (12 years, 4 months ago)

ever wonder why ants, termites, and bees live the way they do?

i think it's fascinating...

"Relatedness and the Origin of Eusociality

Many eusocial insects, including ants, bees, and wasps, are haplodiploid. Therefore, each female has two alleles at a locus, while each male has only one. This leads to a different kin relatedness than that which diploid species exhibit. For example, whereas a diploid female is related to her sister only 1/2, a haplodiploid female is related to her sister 3/4. Other degrees of relatedness are charted below:

Table 2: Genetic Relatedness in Haplodiploid and Diploid Species

(table at webpage)

The relatedness differences in haplodiploid species lead to differences in their display of kin selected behavior as compared to diploid species. On the basis of kin selection, eusocial females would be expected to prefer to help their mothers raise their sisters, increasing their indirect fitness, rather than concentrating on increasing their direct fitness by raising their own offspring. This explains why there are sterile castes in eusocial insects; these workers may give up potential direct benefits associated with raising their own children, because indirect benefits are so beneficial. The indirect benefits preference in social wasps can be used as a basis of comparison and analysis of the balance of indirect and direct benefits in other species.

Differences in genetic relatedness among the various individuals within a eusocial colony also make social insects important in the study of parent-offspring conflict. As mentioned above, female haplodiploids benefit from helping raise their sisters which they are related to 3/4. These females, on the other hand, are related to their brothers only 1/4. Therefore, they will prefer for their mothers to have daughters. Since the mother is related to both sons and to daughters 1/2, she will have a tendency to not show preference towards daughters, leading to a conflict of interest between the mother and her daughters."

eusocial insects

interesting. what would it be like if humans were eusocial animals?


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Offlinedaba
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Re: eusocial insects.... [Re: ]
    #2916864 - 07/22/04 06:31 PM (12 years, 4 months ago)

What if? But we're not... so no need to rake our brains for speculations.


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InvisibleLe_Canard
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Re: eusocial insects.... [Re: ]
    #2917456 - 07/22/04 09:51 PM (12 years, 4 months ago)

Interesting - I always suspected that social behaviors in insect was genetic. I've also always wondered how such behaviors evolved.


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Invisiblemicro
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Re: eusocial insects.... [Re: ]
    #2921684 - 07/23/04 08:21 PM (12 years, 4 months ago)

I wonder if ants get senile.

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