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Invertebrates in Medical News

Genome sequence of lancelet shows how genes quadrupled during vertebrate evolution

... sea squirt; and vertebrates like us. Cephalocordates and urochordates are invertebrates that have a flexible notochord rather than a bony spine protecting their ... genome, two lancelets differ at one of every 16 nucleic acids. "Marine invertebrates actually vary about 6 percent, which means that, on average, one of every ...

The world's best brains descend on Canberra

... and regeneration. Thursday 5pm Professor Russell Foster, University of Oxford, will describe how linking visual light detection between humans and invertebrates (molluscs, crustaceans, insects) closes a long standing gulf in our understanding of evolution. Friday 11.30am ...

Evolution and epilepsy

... sea squirts, and lampreys, as well as vertebrates, have sodium channels with the anchor sequence. The sodium channels of nonchordates (including invertebrates such as insects and mollusks) lacked this clustering sequence. This is important because sodium channel clustering makes nerve signaling much more ...

Old gastrointestinal drug slows aging, McGill researchers say

... Strathcona Chair of Zoology and Robert Archibald & Catherine Louise Campbell Chair in Developmental Biology. "Because clock-1 affects longevity in invertebrates and mice, and because we're talking about three age-dependent neurodegenerative diseases, we hypothesize that clioquinol affects them by slowing down ...

Hebrew University research on octopuses sheds light on memory

... University of Jerusalem. Why octopuses? Octopuses and other related creatures, known as cephalopods, are considered to be the most intelligent invertebrates because they have relatively large brains and they can be trained for various learning and memory tasks, says Dr. Hochner. Their behavior ...

X-rays power discoveries at Chicago's Field Museum

... the artifact. Anthropology Collections Manager Chris Philip identified shells inside the stuffing of the mask. The clarity of the image allowed invertebrates Collections Manager Jochen Gerber to specify two complete shells as Mesodesma donacium, an edible marine clam inhabiting the waters off the west ...

Small sea creatures may be the 'canaries in the coal mine' of climate change

... a major economic role in California fisheries, since the roe of the sea urchin is a valuable sushi called uni. Hofmann explained that as marine invertebrates deal with increasing acidity, the larvae have to re-tune their metabolism in order to still make a shell. But this is done at a cost. The ...

Cockroaches are morons in the morning, geniuses in the evening

... and memory and learning in general. Much of the new information about the molecular basis of memory and learning has come from the study of other invertebrates (animals without backbones) such as the sea slug (Apylsia) and the fruit fly (Drosophila). Studies like this suggest that time of day can have a ...

Corals added to IUCN Red List of Threatened Species for first time

... The GMSA is the first strategic global review of the conservation status of marine species, including every marine vertebrate species and selected invertebrates and plants. Funded predominantly by CI, the five-year GMSA initiative is engaging experts from around the world to compile and analyze all existing ...

One Species' Genome Found Within Another

... code between species and then to the offspring of the new species is more common than previously thought. Wolbachia is found in the majority of invertebrates worldwide. The Rochester team studied the impact of Wolbachia genes in fruit flies by treating the flies with antibiotics so that they no longer ...

The Origin of the Brain Lies in a Worm

... a rope-ladder-like chain of nerve cell clusters on their belly side. Other invertebrates on the other hand have their nerve cells distributed diffusely over their ... of Platynereis," Arendt says. "How the inversion occurred and how other invertebrates have modified the ancestral CNS throughout evolution are the next exciting ...

Pond in High Artic Drying Up Due to Global Warming

... water in many polar areas, and part of the Arctic ecosystem. They provide habitat for waterfowl, drinking water for animals and homes for tiny invertebrates like shrimp, which are a food source for larger animals. "It's really interesting to see how quickly it is happening. We could see this trend ...

Boffins Find Evidence for Novel Brain Cell Communication

... Gap junctions are found in many parts of the body, such as the heart and have been most studied in older vertebrates (such as fish) and in invertebrates (such as leeches and crabs). The current study provides the first electron microscopic evidence for gap junctions on the axons of ...

Saving Powers Of The Ocean On The Wane

... Scientists say that this sink effect is changing the ocean chemistry. The resulting changes have slowed growth of plankton, corals, and other invertebrates that serve as the most basic level of the ocean food chain. Scientists warn, the impacts on marine life could be severe. "The oceans are ...

Flies too Have Immune Memory!

... fly's immune response can adapt to - or retain memory of - an earlier infection contradicts the long-held dogma that immune memory cannot exist in invertebrates such as insects. Such memory of a specific pathogen, known as adaptation, is supposed to be a hallmark of the higher-level immune system response of ...

Blame Myelin for Many Neuropsychiatric Disorders

... argues Bartzokis, who directs the UCLA Memory Disorders and Alzheimer's Disease Clinic, is “a recent invention of evolution. Vertebrates have it; invertebrates don't. And humans have more than any other species.” Bartzokis studied the reported effects of cholinergic treatments, using drugs that are ...

Leeches Provide Clues Regarding The Prevention Of Heart Disease

... an extensive list of new potential molecules that may become useful tools. There has been an increasing tendency to turn towards blood-feeding invertebrates as a source for drugs and lead compounds to treat cardiovascular disease because these animals have evolved highly efficient mechanisms to feed on ...

The route to fertilization

... with the build-up of nitric oxide gas inside the sperm.// The research is based on the sex lives of male and female sea urchins - spiny, purple invertebrates found in the Pacific Ocean just a few yards from Epel's laboratory on California's Monterey Bay. Experiments reveal that normal sea urchin sperm ...
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