Post List

  • February 6, 2011
  • 10:31 AM

RNA is so passé. Mitochondrial ribosomes ditch rRNA in favour of protein

by Gemma Atkinson in Protein evolution and other musings

Mitochondria are the energy-producing organelles of eukaryotes that evolved from a endosymbiotic bacterial ancestor, probably before the divergence of all known eukaryotes. They retain a minimal genome, which in humans amounts to just 37 genes: 13 for components of respiratory complexes and 24 for translation (22 transfer (t) RNAs and 2 ribosomal (r) RNAs).Translation is pretty bizarre in mitochondria, and very different among different eukaryotic lineages in terms of mRNA features and involveme........ Read more »

  • February 6, 2011
  • 10:28 AM

How “wild” is Ethiopian forest coffee?

by Julie Craves in Coffee & Conservation

Ethiopia is the birthplace of coffee.  Coffea arabica originates in and still grows wild in Ethiopia in areas which are included in the Eastern Afromontane Biodiversity hotspot.  This hotspot — [...]

... Read more »

  • February 6, 2011
  • 08:59 AM

Deep Sea 101: Lessons from the Census of Marine Life

by Kevin Zelnio in Deep Sea News

←Previous lesson: Introduction and What Is the Deep Sea?
Click image to go to Census of Marine Life!
Last week we kicked off our online class with an introduction to the deep sea environment. Before we continue on to spend a bit of time talking about the history of deep-sea exploration, I want to discuss the current state . . . → Read More: Deep Sea 101: Lessons from the Census of Marine Life... Read more »

Costa, D., Huckstadt, L., Crocker, D., McDonald, B., Goebel, M., & Fedak, M. (2010) Approaches to Studying Climatic Change and its Role on the Habitat Selection of Antarctic Pinnipeds. Integrative and Comparative Biology, 50(6), 1018-1030. DOI: 10.1093/icb/icq054  

  • February 6, 2011
  • 08:50 AM

random chance vs determinism | Knowing, Part 1

by Michael Lombardi in a New Life in the Sea

This post is a continuation of the analysis of my marathon movie weekend. As I escaped the creepiness, yet remained perplexed by The Fourth Kind, I found myself more deeply enveloped by 'Knowing'. The film followed my alien themed movie marathon, but more subtly, and emphasized a focus on our perceptions of reality.

In the early part of the film, we meet Nicholas Cage's character, a professor from MIT, who poses a challenge to his students to consider whether life is the product........ Read more »

unknown. (1932) Determinism Defined. Nature, 129(3250), 228-228. DOI: 10.1038/129228d0  

Kampen, N. (1991) Determinism and predictability. Synthese, 89(2), 273-281. DOI: 10.1007/BF00413908  

  • February 6, 2011
  • 08:00 AM

A crustacean genome at last

by Michael Bok in Arthropoda

This week saw the official publication of the first crustacean genome (unless you count the flying crustacean genomes: fruit flies, bees, wasps, aphids, mosquitoes, and beetles). The genome is that of a “water flea” Daphnia pulex, a Branchiopod related to brine shrimp (Arthemia) and fairy shrimp (Triops). Daphnia is tiny, between 1.5 and 3 millimeters [...]... Read more »

Colbourne, J., Pfrender, M., Gilbert, D., Thomas, W., Tucker, A., Oakley, T., Tokishita, S., Aerts, A., Arnold, G., Basu, M.... (2011) The Ecoresponsive Genome of Daphnia pulex. Science, 331(6017), 555-561. DOI: 10.1126/science.1197761  

  • February 6, 2011
  • 02:17 AM

Mental health assessments can directly benefit clients

by Keith Bredemeier in ionpsych

Relative to other mental health service providers (e.g., psychiatrists, social workers), clinical psychologists receive extensive training in conducting mental health assessments, placing them in a unique position to offer these services to clients.  As a result, assessment has been a … Continue reading →... Read more »

Eisman, E.J., et al. (2000) Problems and limitations in the use of psychological assessment in the contemporary health care delivery system. Professional Psychology: Research and Practice, 131-140. info:/

  • February 6, 2011
  • 01:52 AM

Don't Panic! Realities of Vector Borne Diseases after the Queenslands Floods

by Linda Lin in Oz Blog No. 159

While there's always a risk of rising disease incidence after a natural disaster, it's not always a cause for concern. For Western and developed countries, chances of acquiring a vector borne disease are slim. Yes, you should still probably take...... Read more »

  • February 6, 2011
  • 01:50 AM

Can the Tiger-Mom Approach Explain the Math Learning Gap Between America and China?

by Zijing He in ionpsych

Educators have long been concerned about the math learning gap between America and China: children in China and other East Asian countries outperform their American peers on various math tasks (e.g., counting, arithmetic, algebra, & geometry). To maintain America’s national … Continue reading →... Read more »

  • February 6, 2011
  • 01:45 AM

Alien Babies: To'au in He'eia Mangroves

by Megsie Siple in Fishpond Fever

While I was seining with the LAIP interns this past summer, we came across some interesting fish living near the mangroves. While some of the fish and nearly all the invertebrates we've seen are species that may spend their entire lives in the pond (the half-spotted goby, for example, or Podopthalmus vigil, the Hawai'ian swimming crab), others are transient. Many Hawai'ian fishponds are strategically placed at the mouths of streams because highly productive, protected estuaries ar........ Read more »

  • February 6, 2011
  • 12:40 AM

Insights into the pathogenesis of the Spanish Flu

by Michelle Ziegler in Contagions

One of the enduring mysteries of influenza is why the 1918 H1N1 influenza, better known as the Spanish Flu, was so unusually deadly. The 2009 H1N1 influenza was certainly capable of creating a pandemic but was not nearly as deadly. Granted most of the fatalities in 1918 had bacterial pneumonia that could probably have been [...]... Read more »

  • February 5, 2011
  • 11:23 PM

Mapping fitness: protein display, fitness, and Seattle

by Steve Matheson in The Panda's Thumb

A couple of months ago we started looking at the concept of fitness landscapes and at some new papers that have significantly expanded our knowledge of the maps of these hypothetical spaces. Recall that a fitness landscape, basically speaking, is a representation of the relative fitness of a biological entity, mapped with respect to some measure of genetic change or diversity. The entity in question could be a protein or an organism or a population,...... Read more »

Fowler, D., Araya, C., Fleishman, S., Kellogg, E., Stephany, J., Baker, D., & Fields, S. (2010) High-resolution mapping of protein sequence-function relationships. Nature Methods, 7(9), 741-746. DOI: 10.1038/nmeth.1492  

  • February 5, 2011
  • 06:51 PM

Welcome, "Monstrous Murderer"!

by Paleochick in Paleochick's Digs

Dearest readers,
Happy “Superbowl Sunday” weekend (Not that I’m keeping score OR...... Read more »

  • February 5, 2011
  • 06:08 PM

Hangovers: beware of the dog.

by B.F. Hebb in ionpsych

It’s Saturday morning, bright and early: how are you feeling? Headache? Yes. Nausea? Yes. Restlessness? Yes. Sweating, irritability, vomiting? Yes, yes, yes. No need to call the doctor. Given what you had to drink last night, your diagnosis is simple: … Continue reading →... Read more »

  • February 5, 2011
  • 06:00 PM

Are you a Shopping Addict? Try the ‘Shopaholic Test’!

by Stuart Farrimond in Dr Stu's Science Blog

I’m starting to get concerned. My wife has just started looking for her next handbag, and she has expensive tastes…

Are you the type of person who lives to shop? Or are you like me, and do you think that ‘retail therapy’ is a contradiction in terms? Today’s blog is all about the ‘Shopping Addiction’ phenomenon: Find out what it is, shopaholic myths and take an online quiz to find out if you are a shopaholic…... Read more »

Valence, G., d'Astous, A., & Fortier, L. (1988) Compulsive buying: Concept and measurement. Journal of Consumer Policy, 11(4), 419-433. DOI: 10.1007/BF00411854  

  • February 5, 2011
  • 10:59 AM

The Fourth Kind | a frank discussion and review

by Michael Lombardi in a New Life in the Sea

This weekend was an extra-terrestrial movie double header...but not of the District 9 type. Rather, despite the 'fiction' label on the DVD box, I took a deeper look at the realities of the paranormal and prophecy. This discussion will span the next several posts here on 'a New Life'.

The first film was 'The Fourth Kind'. Call me what you will, but I watched it late one night by myself, and it scared the bejeezums out of me.

This film portrays a series of psycho paranormal events&nbs........ Read more »

  • February 5, 2011
  • 10:46 AM

Egypt Week – Oxytocin and Ethnocentrism

by Jon Wilkins in Lost in Transcription

So, as we approach the end of Egypt Week, we are going to talk about recent paper in PNAS. The researchers examined the effects of oxytocin on the extent to which people exhibit in-group favoritism. They use ethnic markers to indicate in-group versus out-group membership. In this study, which was performed in the Netherlands, the in-group was Dutch and out-groups were German or Arab.

Here's the bottom line: subjects who were given oxytocin were more likely to favor in-group members relative to........ Read more »

De Dreu CK, Greer LL, Van Kleef GA, Shalvi S, & Handgraaf MJ. (2011) Oxytocin promotes human ethnocentrism. Proceedings of the National Academy of Sciences of the United States of America, 108(4), 1262-6. PMID: 21220339  

  • February 5, 2011
  • 07:11 AM

Studying viral infection at the whole-organism level

by Connor Bamford in The Rule of 6ix

What can the zebrafish tell us about viral infection? Well, a recently published paper uses transparent zebrafish larvae to follow infection and pathogenesis of Infectious Hematopoietic Necrosis Virus - an important salmonid pathogen.... Read more »

  • February 5, 2011
  • 05:22 AM

Belyaev's Foxes - Introduction - Part I

by Leema in Some Thoughts About Dogs

A summary of the work of Belaev in his ongoing experiment with foxes.... Read more »

Belyaev, DK. (1979) Destablizing selection as a factor in domestication. Journal of Heredity, 70(5), 301-308. info:/

Kukekova, A., Trut, L., Oskina, I., Johnson, J., Temnykh, S., Kharlamova, A., Shepeleva, D., Gulievich, R., Shikhevich, S., Graphodatsky, A.... (2007) A meiotic linkage map of the silver fox, aligned and compared to the canine genome. Genome Research, 17(3), 387-399. DOI: 10.1101/gr.5893307  

  • February 5, 2011
  • 03:52 AM

Welcome, "Monsterous Murderer"!

by Paleochick in Paleochick's Digs

A new Tyrannosaurus from the Kaiparowits Formation is named..... Read more »

  • February 5, 2011
  • 01:15 AM

Psycasm - It's like a blog in your ears

by Rift in Psycasm

So I've been a bit snowed under lately. As I mentioned recently, we've had some pretty big floods in my part of the world, and as a result all my summer semester workload has backed-up into one ugly pile of responsibility.And so my blogging has been a bit light on while I tackle these assignments and exams. Fear not, as soon as I get the chance I fully intend to look into what the litera; (read more)

Source: Psycasm - Discipline: Psychology... Read more »

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