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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 ...

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Invertebrates in Biological News

Snakes, salamanders and other creatures thrive in areas with higher deer populations

... of several species of snakes, salamanders, and invertebrates studied, a greater diversity of animals were ... The researchers then counted the number of invertebrates and vertebrates under each board every three to ... by comparing the variety of insect groups and invertebrates found in each area. The results, Greenwald ...

Red List overlooks island species

... to the Canary Islands (38 vertebrates, 510 plants, 2,960 arthropods or invertebrates and 196 molluscs) should be labelled as threatened, because only the ... Islands), are not covered by Red List criteria for threatened species. As invertebrates usually have a smaller distribution area than large vertebrates and birds ...

Uncovering secrets of life in the ocean

... Larvae of marine invertebrates worms, sponges, jellyfish - have the simplest eyes that exist. They ... early landmark in the evolution of animal eyes. Many contemporary marine invertebrates still employ the strategy for phototaxis. ...

UCSB researcher leads worldwide study on marine fossil diversity

... and lobsters, while also revealing that most of the early propagation of invertebrates took place before the Late Cretaceous period. In addition, the research contends that the increase of those invertebrates in the period since is relatively small when compared to the 100 million ...

Origins of the brain

... proteins was embellished by addition of new proteins with the evolution of invertebrates and vertebrates and this has contributed to the more complex behaviours of ... time, the synapse proteins from brains of flies, which confirmed that invertebrates have a simpler set of proteins than vertebrates. Most important for ...

Rats on islands disrupt ecosystems from land to sea, researchers find

... birds--sea gulls and oystercatchers, in particular--are major predators of invertebrates in the intertidal zone. In their absence, the snails, limpets, and other ... increase in abundance, eat more algae, and clear more space for other invertebrates to settle and grow. The result is a shoreline practically stripped bare of ...

Smithsonian scientists working to save microscopic threatened species

... habitat. In August, Zoo Reproductive Scientist Dr. Mary Hagedorn and invertebrates Keeper Mike Henley traveled to Puerto Rico with marine scientists involved ... healthy coral populations in the Caribbean. Meanwhile, at the Zoos invertebrates Exhibit, keeper Mike Henley has been coaxing the 12,000 coral larvae to ...

Leicester research paves way for first use in Europe of an insect to fight invasive plant

... to focus their collecting efforts on the precise region of Japan where the European clone of Japanese Knotweed originated. "A number of Japanese invertebrates and micro organisms have been subjected to a rigorous testing regime. The aim of biological control is not to eradicate the target organism, but to ...

NOAA report finds threats to California's Cordell Bank Marine Sanctuary

... in 1989, the sanctuary's productive waters are a destination feeding area for local and migratory marine life. Its unique rocky undersea thrives with invertebrates and fishes and is surrounded by the softer sediments of the continental shelf. ...

Wildlife Conservation Society supports world's first study of egg-laying mammal

... legs with long claws. The snout of the echidna ends in a tiny mouth with no teeth. Long-beaked echidnas feed on insect larvae, worms, and other invertebrates (whereas short-beaked echidnas prefer ants and termites). Echidnas and platypuses are more reptile-like than other mammals, with features such as: a ...

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Invertebrates in Biological Technology

Agent in red wine found to keep hearts young

... the same time, it plugs into the biology of caloric restriction." Previous research has shown that resveratrol in high doses extends lifespan in invertebrates and prevents early mortality in mice given a high-fat diet. The new study, conducted by researchers from academia and industry, extends those ...

RNA Interference and Gene Silencing: History and Overview

... NJ, Parrish S, Imani F, Fire A, and Morgan RA. (2001) Specific inhibition of gene expression by small double-stranded RNAs in invertebrates and vertebrate systems. Proc. Natl. Acad. Sci. USA 98 : 9746-9747. Holen T, Amarzguioui M, Wiiger M, Babaie E, and ...
Invertebrates in Biological Definition

Blood

... different species 1.1 Humans 1.2 Small invertebrates 1.3 Insects 2 Anatomy of blood 3 ... maintain a pH between 7.35 and 7.45. Small invertebrates In some small invertebrates like insects , oxygen is simply dissolved in ...

Endosymbiont

... in marine oligochaetes 2 Bacterial endosymbionts in other marine invertebrates 3 Symbiodinium dinoflagellate endosymbionts in marine metazoa and ... gut, mouth or nephridia). Bacterial endosymbionts in other marine invertebrates Extracellular endosymbionts are also represented in all 5 extant ...

Endosymbiont

... in marine oligochaetes 2 Bacterial endosymbionts in other marine invertebrates 3 Symbiodinium dinoflagellate endosymbionts in marine metazoa and ... gut, mouth or nephridia). Bacterial endosymbionts in other marine invertebrates Extracellular endosymbionts are also represented in all 5 extant ...

Reproduction

... creates a genetically similar copy of itself without the combination of genetic material with another individual. For example, the Hydra ( invertebrates of the order Hydroidea ) and yeast are able to reproduce by budding . These organisms do not have different sexes, and they are capable of ...

Brain

... other neurons in the brain and throughout the body by sending various chemicals called neurotransmitters across gaps known as synapses . Small invertebrates such as insects may have a million neurons in the brain, larger vertebrate brains have over one hundred billion neurons. The human brain is ...

Carnivore

... There are also several species of carnivorous plants , though most are primarily insectivorous , some digest nematodes and other small invertebrates . Many dinosaurs and other extinct animals were carnivores, for example the well known Tyrannosaurus rex and sabretooth tiger . See ...

Cell growth

... neuron onto other cells. For example, the size of motoneurons usually reflects the size of the motor unit that is controlled by the motoneuron. invertebrates often have giant neurons and axons that provide special functions such as rapid action potential propagation. Mammals also use this trick for ...

Cladistics

... For instance, the traditional class Reptilia excludes birds even though they evolved from the ancestral reptile. Similarly, the traditional invertebrates are paraphyletic because Vertebrates are excluded, although the latter evolved from an Invertebrate. A group with members from separate ...

Ecdysone

... (ecdysone and its homologues) are generally called ecdysteroids . Ecdysteroids act as moulting hormones of arthropods but also occur in other invertebrates where they can play different role. Ecdysteroids also appear in many plants mostly as a protection agents (toxins or antifeedants) against herbivore ...

Epidermis

... covering the leaves and young parts of a plant is the epidermis . In vertebrates , epidermis is the outermost layer of the skin . In invertebrates , the outermost layer of cells of the organism. Etymology : 17th Century, via Late Latin from Greek , from epi- (upon) and derma (skin) ...

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Invertebrates in Biological Dictionary

Invertebrates

... is an animal without a vertebral column. ... invertebrates form a paraphyletic group. ... Online Dictionary of Invertebrate Zoology. ... invertebrates are the most abundant creatures on earth, crawling, flying, ... invertebrates —creatures without ... ...

Poikilothermic

... dictionary. ectotherms, animals — the other vertebrates and the invertebrates — that secure ... Ectotherms are "cold-blooded" or poikilothermic . ... ... their metabolisms to heat or ... poikilothermic vertebrates and invertebrates ... aquatic animals are poikilothermic (cold-blooded) ... From this ...

Nephridium

... ... a type of excretory gland or nephridium found in many types of invertebrates ... Retrieved from "http://en.wikipedia.org /wiki/ Nephridium " ... unit of the excretory system in many primitive invertebrates and also in the amphioxus; it expels wastes from the body cavity to the ...

Vertebrates

... Vertebrata, that is, animals ... Over 50,000 species of vertebrates have been described. ... These sites explain how vertebrates and invertebrates are classified in the animal kingdom. ... This is a short game that covers the different classes of vertebrates . ... ...

Tube feet

... , which are operated by a hydraulic, or ... Information about tube foot in the free online English dictionary and ... echinoderm - marine invertebrates with tube feet and five-part radially ... Shop online at DSW.com for the Andrea Jovine Women's 1 Pair Dots Foot Tube . Find thousands of ...

Sinus venosus

... Britannica online encyclopedia article on sinus venosus (anatomy), ... the true vertebrate. Its circulatory pattern differs from that of most invertebrates as the ... Definition of sinus venosus in the Online Dictionary. Meaning of sinus venosus . ... sinus venosus . Also found in: Medical, ...

Sequencing

... ... The Sanger Institute undertakes a number of large scale sequencing projects that range from complex vertebrates through nematodes and invertebrates to bacteria. ... Danio rerio Sequencing Project: ... C57BL/6J Mouse Sequencing : 5 times coverage of the genome of mouse strain C57BL/6J ...

Nuclear lamina

... of ... We examined the nuclear lamina in the quickly frozen anterior pituitary cells by ... The nuclear lamina was first described in invertebrates by transmission electron ... The nuclear lamina is a network of structural filaments, the A and B type lamins, ... Other major components of ...

Hydrostatic skeleton

... difference lies in the repeating units of hydrostatic skeleton as found in the earthworm. ... Hydrostatic skeletons are found in soft-bodied invertebrates ... The hydrostatic skeleton is sort of like a water-filled balloon. ... These animals use the hydrostatic skeleton to change the shape ...

Hemoglobin

... ... The normal range of hemoglobin is approximately 14 to 17 grams per deciliter for ... 3-dimensional structure of hemoglobin . ... Some invertebrates also employ hemoglobin in oxygen transport, such as annelid ... Hemoglobin has been used to ... The hemoglobin test is almost always done ...

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