Results 31 to 40 of about 4,510 (201)

From sea to land and beyond : new insights into the evolution of euthyneuran Gastropoda (Mollusca) [PDF]

open access: yes, 2008
Background The Euthyneura are considered to be the most successful and diverse group of Gastropoda. Phylogenetically, they are riven with controversy.
Albrecht, Christian   +4 more
core   +2 more sources

Homologues of the engrailed gene from five molluscan classes [PDF]

open access: yes, 1995
We used the polymerase chain reaction (PCR) to amplify, clone, and sequence 10 engrailed homeodomains from 8 species in the five major molluscan classes, including the serially organized chiton (Polyplacophora) lineage.
Baker, R.   +5 more
core   +1 more source

Evolution der Cephalic Sensory Organs innerhalb der Opisthobranchia [PDF]

open access: yes, 2008
Das Ziel der vorliegenden Doktorarbeit war es, die Evolution der Kopfsinnesorgane der Opisthobranchia zu rekonstruieren. Bei den Opisthobranchia handelt es sich um eine äußerst diverse Gruppe überwiegend mariner Gastropoden innerhalb der Euthyneura.
Staubach, Sid
core  

Long‐Term Mobility of a Harvested, Rocky‐Reef Gastropod

open access: yesFisheries Management and Ecology, EarlyView.
ABSTRACT Stocks of Turbo militaris (Turbinidae) are under increasing harvesting pressure, but management is currently hampered by data deficiency. Management decisions for rocky‐reef gastropod fisheries should consider long‐term species mobility, yet this is often poorly understood. Therefore, mark‐recapture was used to evaluate annual displacement and
Kate Seinor   +4 more
wiley   +1 more source

Osculating mate of a Frenet curve in the Euclidean 3-space [PDF]

open access: yesarXiv, 2023
A new kind of partner curve called osculating mate of a Frenet curve is introduced. Some characterizations for osculating mate are obtained and using the obtained results some special curves such as slant helix, spherical helix, $C$-slant helix and rectifying curve are constructed.
arxiv  

Prey Capture Outside of the Web? Observational Evidence of a Novel Form of Prey Capture in a Cave Orb Web Spider

open access: yesEthology, Volume 131, Issue 7, July 2025.
It is currently not known how the European cave orb spider Meta menardi (d) catches the non‐flying prey, which makes up approximately half of its diet. Our observations in winter and summer from caves in the United Kingdom offer support to the radius tripwire hypothesis (a) over the off‐web hunting hypothesis (b) and the prey slip hypothesis (c ...
Thomas Hesselberg, Emily Brannigan
wiley   +1 more source

The status of Otala punctata (Muller, 1774) : a recently established terrestrial gastropod in Malta [PDF]

open access: yes, 2008
A population of the alien helicid Otala punctata (Müller, 1774) has recently been found on the island of Malta (Central Mediterranean), located around a single plant nursery at Mosta in the central part of the island.
Barbara, Nicholas, Schembri, Patrick J.
core  

Ultrastructural localization of NADPH diaphorase and nitric oxide synthase in the neuropils of the snail CNS [PDF]

open access: yes, 2015
Comparative studies on the nervous system revealed that nitric oxide (NO) retains its function through the evolution. In vertebrates NO can act in different ways: it is released solely or as a co-transmitter, released from presynaptic or postsynaptic ...
Elekes, Károly   +2 more
core   +1 more source

On the Helix-coil Transition in Alanine-based Polypeptides in Gas Phase [PDF]

open access: yesJ. Chem. Phys., 126 (2007) 204307, 2007
Using multicanonical simulations, the authors study the effect of charged end groups on helix formation in alanine based polypeptides. They confirm earlier reports that neutral polyalanine exhibits a pronounced helix-coil transition in gas phase simulations.
arxiv   +1 more source

Evaluation of bigano snail (Stramonita haemastoma) as a seafood resource

open access: yesJournal of the World Aquaculture Society, Volume 56, Issue 3, June 2025.
Abstract Bigano snail, Stramonita haemastoma, commonly known as oyster drill or red‐mouthed rock whelks, has gained growing interest as a potential seafood product. However, to date, there is a notable lack of preliminary evaluation regarding its commercial viability.
Xuan Dong, Hong Lin, Yifen Wang
wiley   +1 more source

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