Results 1 to 10 of about 53 (45)
Evidence that gastropod torsion is driven by asymmetric cell proliferation activated by TGF-β signalling [PDF]
Gastropods are characterized by their asymmetric bodyplan, which develops through a unique ontogenetic process called ‘torsion’. Despite several intensive studies, the driving force of torsion remains to be determined. Although torsion was traditionally believed to be driven by contraction of the retractor muscle connecting the foot and ...
Hiroshi Wada, Yoshihisa Kurita
exaly +3 more sources
COMMENTS ON “THE ADAPTIVE SIGNIFICANCE OF GASTROPOD TORSION” [PDF]
Roger L, Batten +2 more
exaly +3 more sources
A Method for Quantifying, Visualising, and Analysing Gastropod Shell Form. [PDF]
Quantitative analysis of organismal form is an important component for almost every branch of biology. Although generally considered an easily-measurable structure, the quantification of gastropod shell form is still a challenge because many shells lack ...
Thor-Seng Liew, Menno Schilthuizen
doaj +1 more source
Background Haliotis diversicolor is commercially important species. The trochophore and veliger are distinct larval stages in gastropod development. Their development involves complex morphological and physiological changes.
Guilan Di +8 more
doaj +1 more source
GASTROPOD TORSION: A TEST OF GARSTANG'S HYPOTHESIS
Torsion occurs in gastropod molluscs as a 180° twisting of the shell and viscera relative to the head and foot of the veliger larva. Garstang (1928, 1929) proposed, and it has since become widely accepted, that torsion functions as a larval defense by allowing veligers to first pull the head into the shell, then sealing the aperture with the foot and ...
Pennington, J Timothy, Chia, Fu-Shiang
openaire +4 more sources
Abstract Marine cone snails produce a diverse array of bioactive peptides, known as conotoxins, in their venom. Given their high target potency and specificity, conotoxins are attractive compounds for the development of precision research tools and pharmacological agents.
Celeste M. Hackney +12 more
wiley +1 more source
Piacenzian mixed carbonate‐siliciclastic succession (‘Macco’ unit) deposited on the passive margin of the Tyrrhenian back‐arc basin. Sedimentation was controlled by syn‐sedimentary tectonics, with NW–SE first‐order faults (3–4 km) creating accommodation space and NE–SW second‐order faults (~0.5 km) influencing facies distribution and growth structures.
Marco Brandano +5 more
wiley +1 more source
Abstract KNM‐ER 64061 is a partial skeleton from the upper Burgi Member of the Koobi Fora Formation (2.02–2.06 Ma) associated taphonomically and geochemically with a nearly complete mandibular dentition (KNM‐ER 64060) attributed to Homo habilis.
Frederick E. Grine +8 more
wiley +1 more source
Primary Productivity and Habitat Depth Shape Developmental Mode in European Marine Gastropods
Thorson's rule suggests that marine gastropods in colder, high‐latitude regions tend to have non‐pelagic (non‐drifting) larval development. However, this study on 94 European gastropod species found that the rule disappears when examined at finer spatial scales, with temperature and phylogeny having little influence.
Nicolás Weidberg +3 more
wiley +1 more source
Reconstructing ~200 years of landscape change at the Cancano–San Giacomo hydroelectric system (Central Alps), we integrate historical cartography, archival photographs, multitemporal aerial/satellite imagery and field validation to map pre‐ and post‐impoundment landforms.
Luca Forti +8 more
wiley +1 more source

