Phlorotannins in Fucus vesiculosus act as chemical defences against the marine herbivorous snail Littorina littorea.

** Common periwinkle ( Littorina littorea )

* Periwinkle Littorina littorea

In Scotland, the word " whelk " is also used to mean the periwinkle ( Littorina littorea ), family Littorinidae.

The English name periwinkle is shared with the related genus Catharanthus ( and also with the common seashore mollusc, Littorina littorea ).

Their diet includes a variety of crustaceans ( including the crabs Carcinus maenas and Pilumnus hirtellus, the porcelain crabs Porcellana platycheles and Pisidia longicornis, and the squat lobster Galathea squamifera ) and molluscs ( including the gastropods Nucella lapillus and Littorina littorea, and the bivalves Ensis, Mytilus edulis, Cerastoderma edule, Ostrea edulis and Lutraria lutraria ).

" The veliger larva of Hydrobia ulvae with observations on the veliger of Littorina littorea ( Mollusca: Prosobranchia )".

Phlorotannins in Ascophyllum nodosum act as chemical defenses against the marine herbivorous snail, Littorina littorea.

* Littorina littorea ( Linnaeus, 1758 ), common periwinkle

The Ancylus age is followed by formation of the Littorina Sea and the Litorina Stage ( named after the Littorina littorea mollusc ) at around 6200 BC.

The common periwinkle or winkle, Littorina littorea, is a species of small edible sea snail, a marine gastropod mollusk that has gills and an operculum, and is classified within the family Littorinidae, the periwinkles.

As a result of its robust nature, Littorina littorea can be highly variable in phenotype with several different morphs present.

Littorina littorea.

es: Littorina littorea

it: Littorina littorea

The Littorina Sea is named after common periwinkle ( Littorina littorea ), then a prevailing mollusc in the Baltic waters, which indicates salinity of the sea.

With the abundance of PCR technology, primers that flank microsatellite loci are simple and quick to use, but the development of correctly functioning primers is often a tedious and costly process. A number of DNA samples from specimens of Littorina plena amplified using polymerase chain reaction with primers targeting a variable simple sequence repeat ( SSR, a. k. a. microsatellite ) locus.

Littorina mounted two dual 7. 92mm MG13 machine gun turrets from Panzer I light tanks.

File: PAGE_AgStain_Microsat. jpg | A number of DNA samples from specimens of Littorina plena amplified using PCR with primers targeting a variable simple sequence repeat ( SSR, a. k. a. microsatellite ) locus.

Species in the genus Littorina include

Through retrieval and isotope analysis of marine cores and examination of mollusc growth patterns from Iceland, Patterson et al were able to reconstruct a mollusc growth record at a decadal resolution from the Roman Warm Period through the Medieval Warm Period and into the Little Ice Age

There is some evidence from the case of the mollusc Thais lapillus ( the dog whelk ) on the Brittany coast, that the two chromosome morphs are adapted to different habitats.

Opalized mollusc shell from a Coober Pedy mine.

There are remains from mounds of mountain shellfish ( Cyclophorus ), spring shellfish ( Melania ), some fresh water mollusc and some rudimentary labour tools.

The English name " chiton " originates from the Latin word chitōn, which means " mollusc ", and in turn is derived from the Greek word " khitōn ", meaning tunic ( which also is the source of the word chitin ).

Modern research hypothesizes instead — based on the presence of mollusc and gastropod shells and foraminifera — that the site was buried by ocean waters resulting from repeated tsunamis.

The potential mollusc related Kimberella is associated with scratch marks, perhaps formed by a radula, further traces from appear to imply active crawling or burrowing activity.

Kimberella ′ s feeding apparatus appears to differ significantly from the typical mollusc radula, and this demonstrates that Kimberella is at best a stem-group mollusc.

A view of the colorful Mantle ( mollusc ) | mantle edges of a live thorny oyster from East Timor.

The fossil record does indicate that the ancestral mollusc was monoplacophoran-like and that the polyplacophora arose from within the monoplacophora – not the other way round ; this could be reconciled if a secondary loss of shells caused a monoplacophoran body form to reappear secondarily.

Excluding the botanical meaning ( 4 ) " rhizomorphs or grouped hyphae of certain fungi that roughly resemble a bivalve shell " and the obsolete ( 2 ) " fungoid filament " and ( 5 ) " asbestos ", byssus refers to ( 1 ) " a rare fabric produced in ancient Mediterranean cultures " which is manufactured from ( 3 ) " a thread-like mollusc filament ".

They announced in October 2008 that the research into Murex purpurea will also be conducted which has an active ingredient sourced from the same family of mollusc as the Australian Dogwhelk.

The siphon is part of the mantle of the mollusc, and the water flow is directed to ( or from ) the mantle cavity.

There are no multiplicative larval stages in the mollusc host, as known from all digeneans.

It was known in times past as the killer clam or man-eating clam, and reputable scientific and technical manuals once claimed that the great mollusc had caused deaths ; versions of the U. S. Navy Diving Manual even gave detailed instructions for releasing oneself from its grasp by severing the adductor muscles used to close its shell.

The sculpture of a mollusc shell is the three-dimensional ornamentation on the outer surface of the shell, as distinct from either the basic shape of the shell itself or the colouration, if any.

The application of biomimetic principles elucidated from mollusc shell assembly and structure may help in fabricating new composite materials with enhanced optical, electronic, or structural properties.

It is now a predominant mollusc from New Jersey northward to Newfoundland.

Chippewaella is a genus of very primitive snail-like mollusc from the Late Cambrian.

Invasive species originated from the Red Sea and introduced into the Mediterranean by the construction of the canal have become a major component of the Mediterranean ecosystem, and have serious impacts on the Mediterranean ecology, endangering many local and endemic Mediterranean species.

* SpineUniverse Minimally Invasive Spine Surgery Information Center — Articles from different institutes, organizations, and spine professionals

Invasive Feral cats and Black Rats have been eradicated from the islands.

Invasive ship rats ( Rattus rattus ) are thought to have been introduced to the island from the wreckage of the SS Winfield Scott.

The Bionic Control of Invasive Weeds in Wiesbaden, Germany is trying to establish a self sufficient project to conserve their local biodiversity by developing several food products made from the Impatiens flowers.

Verad, from the second season episode " Invasive Procedures ," is not among the previous hosts that are separated out, since Verad stole the Dax symbiont and was not joined long enough to be a true host.

* Genista monspessulans ( French Broom ), from The Global Invasive Species Initiative website ; the webpage has links to several photographs.

* Invasive species-habitat colonisation, from human introduction