Ellie Armstrong

Ellie Armstrong

Oct 05, 2016

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From forest to genome

The happy face spider resides in the wet montane forests in the Hawaiian Islands. Typically we find the spiders residing under large plant leaves, or hidden in the lower canopy. So, field work is super wet and can look something like this.

Here is me looking pretty happy because I am not soaking wet...yet.

Usually we visually search for spiders, or use something called a beat sheet (yes, seriously...) to shake plants so that the spiders will fall out. It looks like this (from the Mississippi Entomological Museum):

Often we find happy face females. Interestingly, happy face females are one of the only spiders which take care of their spiderlings, so we tend to flip leaves over and find the whole family! Here's a happy spider mama with her eggs (picture from dailymail.co.uk).

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About This Project

The Hawaiian happy face spider, T. grallator, is known for its striking color polymorphisms (variations within species), which include variable configurations of red, black, and white superimposed on a yellow background. We will use genomic sequencing to identify the genes responsible for color and pattern variation. This is interesting not only because the polymorphism is maintained across several different islands, but because other arthropods display similar patterns in the Hawaiian forests.

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