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]
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]
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]
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
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]
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
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]
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]
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]
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
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