Growing meaty fish

Similar to humans, muscle growth in fish is increased with exercise. Unlike humans, however, teleost fish are able to continue growing in length as well as weight throughout their lives. This type of meat, I mean muscle, growth happens in two ways: 1) muscle cells get bigger and 2) new muscle cells form. Researchers at the University of Barcelona in…

Fin whales have coiled nerves

Fin whales have big mouths, really big mouths. When your meals consist of tiny krill, it is understandable why you would evolve the ability to stretch your mouth super-wide. With each meal comes a lot of water, which expands a pouch in the bottom of their mouths. As the pouch expands, all of the tissues in the pouch expand…

Pitcher plants are a known enemy of insects, but perhaps beneficial for people suffering from celiac disease. Chemist Dr. David Schriemer at the University of Calgary was studying the pitcher plant Nepenthes x ventrata (shown above) in his search for an enzyme similar to pepsin for use in his experiments. Pitcher plants secrete digestive fluids with a pH similar…

As I was looking through the scientific literature the other day, I came across an article published in 1973, “The Evolutionary Advantages of Being Stupid.” With a title like that, how could I not read it? In this article Dr. Eugene D. Robin discussed how larger and more complex brains are associated with greater intelligence, which…

I love fish. The diversity of these aquatic creatures is so vast, I find them fascinating. Take the eel for example: In a study published this month in the American Journal of Physiology – Regulatory, Integrative and Comparative Physiology, researchers wanted to link information they learned from sequencing the RNA of eels with understanding how…

Happy Valentine’s Day! Inotocin is the insect form of the so-called “love” hormone oxytocin. Oxytocin, as you may know, is responsible for inducing labor in pregnant women. A recent study published in Scientific Reports describes the work of a team of researchers that created a synthetic version of inotocin which could bind to both oxytocin and vasopressin receptors in human tissues.…

Frog tongues

I was surfing YouTube and found this neat video from Scientific American about the special properties of frog tongues and saliva that help them catch their prey:  

Camouflage in motion

Cuttlefish (Sepia officinalis) are masters of camouflage. Being able to mimic their surroundings helps them hide from predators. But how do they maintain their camouflage while moving through complex environments, such as coral reefs, sea grass, and varying light patterns? A new study published in Frontiers in Physiology examined this question. They wanted to know how small an object…

The cause of stomach rumbling

The stomach and small intestine of many species moves rhythmically during fasting, something called the rhythmic ‘migrating motor complex’, or MMC. The MMC has 3 phases: no contraction, intermittent small contractions followed by regular large contractions. These contractions are thought to help clean the GI tract by moving along debris and bacteria as well as preparing our guts for the…

The story begins in 1999 when Leonie, a zebra shark (aka a leopard shark in Australia), was captured from the wild. In 2006 she was transferred to Reef HQ Aquarium in Queensland, Australia where she met her mate. By 2008, she had started laying eggs and the pair had multiple litters of offspring through sexual reproduction. After her…