Author: Andrew Thaler

Marine science and conservation. Deep-sea ecology. Population genetics. Underwater robots. Open-source instrumentation. The deep sea is Earth's last great wilderness.

Crowdsourcing ConGen – Populations in Hardy-Weinberg Equilibrium

Posted on By Andrew Thaler
Conservation, Science

This post is part of the Crowdsourcing ConGen project. Crowdsourcing is the process of opening up a resource to a community for input and contributions. Throughout the coming year I’ll be posting manageable pieces of this document for the audience of Southern Fried Science to read and review. Please visit the main post for an overview.

“I have never done anything useful. No discovery of mine has made, or is likely to make, directly or indirectly, for good or ill, the least difference to the amenity of the world.” ~ Godfrey Harold Hardy

The simplest model for a population is one in which the frequencies of alleles and genotypes remains constant from generation to generation. Under this model, there are no outside forces influencing selection, there is no tendency for any allele or genotype to be favored over any other, diploid alleles will recombine randomly in accordance with Mendelian inheritance. A population that behaves this way is said to be in Hardy-Weinberg Equilibrium. This almost never happens.

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Supply Side Conservation Redux

Posted on By Andrew Thaler 4 Comments on Supply Side Conservation Redux
Conservation

can fisheries be saved?

The following was posted at the old website on January 5, 2010. It is reposted here as a response to the question “Why would you encourage people to consume any kind of seafood when bycatch is always an issue? Would it not be better simply to avoid any seafood whatsoever when we can live perfectly healthy lives without?” raised in Reader Mail: Aquariums, seafood, and my shark documentary. Old comments have be stripped but can be found at the original post here.

The Guilty Planet blog has a novel proposal for the New Year: Boycott Seafood. No, not just unsustainable seafood, not just environmentally destructive seafood, ALL seafood.

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Commercial Interests Trump Endangered Species

Posted on By Andrew Thaler 7 Comments on Commercial Interests Trump Endangered Species
Conservation

The 15th United Nation Convention on International Trade in Endangered Species is meeting this week in Doha, Qatar to revise the current list of species protected under international trade agreements. On the proposed list for this year are Blue Fin Tuna, Nile Crocodile, Polar Bears, eight species of shark, and an entire family of red … Read More “Commercial Interests Trump Endangered Species” »

The Growing Consensus of Global Draining

Posted on By Andrew Thaler 13 Comments on The Growing Consensus of Global Draining
Science

Since my initial post of the new phenomenon of Global Draining, there has been an outpouring of support and a trickle of criticism (mostly stemming from hydrologists in the pockets of Big Flood Insurance). Dr. M of Deep Sea News kicked it of with an advanced mathematical model of the effects of Global Draining. Micheal Bok from the blog, Arthropoda, chimed in with his personal observation of Global Draining. Jeff Ives has been tweeting his thoughts on the big drain over the last month @thejives.

But my detractors have raised valid criticisms. Primarily that my original study covered too short a time frame and was biased to only a small period of the tidal cycle. To remedy these concerns, I have conducted a new study, tracking the draining of the sea over an 8 days period, by measuring the maximum high tide of each day. The results are shocking.

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Ancient sharks, not only sub-par, but also pretty gross

Posted on By Andrew Thaler 4 Comments on Ancient sharks, not only sub-par, but also pretty gross
Science

If you’re still unconvinced by previous meditations into the sub-par-ody of sharks, consider this study, reported over at Laelaps: The simplest explanation was that the shark (or sharks) which left the marks had been intentionally trying to eat the feces. “From the curvature of the toothmarks and their positions on the specimens,” Godfrey and Smith … Read More “Ancient sharks, not only sub-par, but also pretty gross” »

Bluefin tuna fails to make UN’s list of protected fish

Posted on By Andrew Thaler
Conservation

Seriously, what the fuck? A proposal to protect the Atlantic bluefin tuna prized in sushi was rejected at a UN wildlife meeting today. The decision was reached after Japan, Canada and scores of poor nations opposed the measure on the grounds that banning exports of the fish would devastate fishing economies. Monaco introduced the proposal … Read More “Bluefin tuna fails to make UN’s list of protected fish” »