Sentences with word «cnidarians»

Whereas the acceleration of cnidarian nematocysts is driven by high internal pressure, the dinoflagellates lack the necessary metabolic pathways.

Moreover, the presence of DMRT1 gene, also present in cnidarians, confirms «the great heterogeneity of sponges despite their simple morphology,» affirms the expert.

The comparative study is based on a comprehensive proteome analysis of isolated Cnidarian nematocysts by the Heidelberg researchers.

It only has about 20 million base pairs, whereas the average Cnidarian has over 300 million.

The stinging cells, or cnidocysts, of sea anemones, jellyfish and other cnidarians work like tiny harpoons when triggered by physical contact.

The ecosystem relies on a stable symbiotic relationship between the host cnidarian animals, including corals and sea anemones, and the symbiont dinoflagellate.

Coral symbiont alga Symbiodinium and the model cnidarian Exaiptasia pallida.

This is the free - swimming reproductive form of the colonial cnidarian Abylopsis tetragona.

«The stinging nematocysts of cnidarians closely resemble those of dinoflagellates, but the ballistic mechanisms are different and they don't appear to share any genes.»

After the sponges and cnidarians came the worms — the first creatures with bilateral symmetry, after which came an «explosion,» as Sogin calls it, of big - animal phyla.

Many different groups of animals, from stinging cnidarians to swimming snails, have independently become free swimming, gelatinous, and transparent.

Recent advances in sequencing cnidarian transcriptomes have revealed the unexpected genetic complexity of these morphologically simple basal organisms.

The emerging insights into cnidarian genomics also provides the opportunity to develop an array of tools that can be applied to better understand the physiology, molecular biology and cellular responses of coral.

For kids who love the ocean, there's a fascinating study on cnidarians, zooxanthellae, and coral reef ecosystems.

Instead, the developers behind Incredipede and Pineapple Smash Crew have collaborated on one of the most bizarre and intriguing game concepts you'll see this year: an alien jellyfish procreation simulator set beneath the thick Venusian clouds, which challenges us to help an intrepid Cnidarian spread its seed and fertilise a variety of extraterrestrial flora.

Belonging to the phylum Cnidaria, hydra are part of a group of organisms known as cnidarians which include jellyfish and sea anemones.

But then they have this complex structure that looks just like stinging cell of cnidarian.

It only has about 20 million base pairs, whereas the average Cnidarian has over 300 million.»

Starting from simple secretory vesicles, which released enzymes and adhesive proteins to attach to and digest other cells, highly complex subcellular weapons systems in cnidarians and dinoflagellate genes presumably developed in different ways.

The cnidarians will do you no harm as they waft past your body.»

Ana Riesgo states that «they have more complex morphological characteristics than other sponges and, in the case of Corticium, they follow the same process of gametogenesis than cnidarians.»

Cartwright said the confirmation that myxozoans are cnidarians would necessitate the re-classification of Myxozoa into the phylum Cnidaria.

In order to determine what the root of their family tree looked like, biologists need reliable dating information for the most ancient animal subgroups — the sponges, cnidarians, comb jellies and placozoans.

«First, we confirmed they're cnidarians.

Genome sequencing confirms that myxozoans, a diverse group of microscopic parasites that infect invertebrate and vertebrate hosts, are actually are «highly reduced» cnidarians — the phylum that includes jellyfish, corals and sea anemones.

These toxins spanned the breadth of the animal kingdom, including ancient venomous groups such as centipedes, scorpions, spiders, coleoids (octopus, cuttlefish and squids) and cnidarians (jellyfish, sea anemones and hydras).

Mollusks were followed by annelids (segmented worms), cnidarians (including sea anemones), bryozoans (moss animals that sometimes resemble coral), crustaceans and others.

According to Prof. Holstein, the leading hypothesis assumes that they originated from organelles of similar construction and function in unicellular organisms that were absorbed as symbionts by early precursors of cnidarians.

They analyzed the DNA of the dinoflagellates to determine if their ballistic mechanism was similar to the stinging organelles (nematocysts) of cnidarians, such as the jellyfish.

In evolutionary convergence, two genetically unrelated organisms evolve similar traits, and biologists at Heidelberg University have now uncovered an example of convergence at the subcellular level in unicellular organisms and cnidarians.

The sponge was indeed at the base of animal lineage, and just above it were the cnidarians, such as jellyfish, anemones, and corals.

The authors hope that these findings will be useful in exploring the evolution of young - feeding mechanisms, both in cnidarians and in other animals.

Comparing the coral's genome with its cnidarian relatives — jellyfish, sea anemones, and hydras — they found that corals emerged some 500 million years ago, which is 250 million years earlier than their earliest known fossil records.

Dendrogramma «s shape is a little like that of a cnidarian — a group containing the jellyfish — but all of the specimens lack the stinging tentacles that are a feature of this group.

The apparent link between environmental stress and degraded coral health, and the recent information demonstrating the complexity of the cnidarians, highlights the need to now understand the biology of the coral host and host responses in these patterns of change.

The biota of Doushantuo comprises algae, multicellular thallophytes (seaweeds), acritarchs, and cyanophytes, poriferans (sponges), cnidarians, including possible tabulate corals.

In our discussion below we therefore refer to descendants of the placozoan — cnidarian — bilaterian last common ancestor as Eumetazoa, and reserve «Eumetazoa sensu stricto» for the more limited clade defined by descendants of the cnidarian — bilaterian ancestor.

Our analyses support the grouping of placozoans, cnidarians and bilaterians into a eumetazoan clade, with demosponges as an earlier - branching lineage25, and reject the diploblast — triploblast phylogeny17 in favour of a more conventional «sponges first» tree19, 20 (Fig. 1d).

Our group focuses on this question and uses the cnidarian Nematostella vectensis as a model organism to study how such morphological plasticity mechanisms are encoded at the molecular and cellular level.

She might even be willing to subject her skin to the stickiness of sunscreen if it meant she could spend the day turning over rocks and cataloging her findings, mostly invertebrates like mollusks, cnidarians, and polychaete worms, which, in Erin's opinion, are all highly underappreciated creatures.

A whopping 97 to 99.7 percent of the cnidarians (jellyfish and siphonophores) have the ability to glow; meanwhile half of the fishes and cephalopods produce their own light.

«First, we confirmed they're cnidarians.