Sentences with word «ctenophore»

The role of the Arctic ctenophore in the Arctic and Baltic ecosystems has not been fully understood due to the limited availability of precise frequency and research data.

However, its official title is «Understanding the biodiversity and ecological importance of ctenophores — Lessons from Arctic and Baltic Mertensia ovum.»

Confirmation of this latter hypothesis would have far - reaching implications for our understanding of evolutionary history because comb jellies and their relatives are relatively complex animals — unlike sponges and placozoans, ctenophores possess muscles and a nervous system.

«If ctenophores diverged first, these organ systems likely have been present in the common ancestor of all animals — and sponges and placozoans must subsequently have lost them — or complex traits like nerve cells and muscles must have emerged independently several times in different lineages,» Wörheide explains.

This little golden fellow, a bathypelagic ctenophore or comb jelly, anchors itself to the seafloor with its tentacles.

The main natural enemy of Mnemiopsis is another comb jelly Beroe ctenophore, also an alien in the Adriatic, and there is some hope that one alien may now feed off another, more devastating one.

One of the conclusions of Majaneva's dissertation is that the most reliable method for identifying ctenophores is to combine photos of individual specimens with morphological and molecular identification methods.

In its Arctic home waters, the Arctic ctenophore reaches a size of nearly 10 centimetres.

In her PhD thesis, which she is due to defend on 11 April, researcher Sanna Majaneva has studied the life of the Arctic ctenophore Mertensia ovum, or the Arctic comb jelly, which is found in the Baltic Sea and the Arctic.

These include Western Australia's first members of the marine mite family, its first species of a wormlike mollusk called aplacophoran, and an unusual species of benthic ctenophore, a bottom - dwelling comb jelly.

Tamm studies the tiny, feathery filaments that ctenophores use to move around.

For more evidence, Ryan and his colleagues sequenced a full ctenophore genome, belonging to the species Mnemiopsis leidyi (pictured, above right).

Flexible self - regeneration in ctenophores discovered.»

A characteristic of ctenophores is that they have the longest cilia and rely more heavily on these ancient organelles than any other animal.

The Arctic ctenophore is rather common from the southern Baltic Sea to the Gulf of Finland and the Sea of Bothnia.

To humans, this ctenophore is a beautiful light show.

«We know far too little of the ctenophore and other animals of the gelatinous zooplankton, such as medusae.

Now, the robot's first findings are already helping scientists piece together more of this previously hidden under - ice food web, including more evidence of the under - ice algae, as well as tiny copepods, ctenophores (jellyfish), predatory marine worms called arrow worms, and abundant amounts of large floating slime balls, known to scientists as larvaceans.

Several unprecedented videos of gelatinous sea creatures called comb jellies, or ctenophores, now threaten to upend the standard view of the evolution of the so - called through - gut.

There are also the ctenophores, or comb jellies, with their eight rows of tiny rippling paddles; cylindrical salps that swim by jet propulsion; and floating snails that catch their food by casting large nets of mucus.

Unlike sponges, comb jellies (or ctenophores) have a primitive nervous system, are hungry predators and have complex cells also found in bilaterians — the group of animals, including humans, that have fronts, backs, an upside and a downside.

But recently, analyses of single genes had suggested that ctenophores could challenge sponges to the spot as the most primitive animals.

Ctenophores were the last remaining group of primitive animals to have a genome sequenced, so the research allowed the first genetic comparison of all groups.

Within the studied species, scyphozoans had on average the highest carbon content (26.97 percent), followed by thaliaceans (17.20 percent), and ctenophores (1.40 percent).

Common types of gelata include jellyfish, medusa, and ctenophores.