It lacks almost all external characters that could identify it as a gastropod, and is one of the most aberrant free-living gastropods. Only the location of the genital, kidney and anal openings on the right body side are obvious remnants of the original gastropod body plan with torsion and ...
Unlike a straight wiring plan, there are now multiple relay stations when the signals reach the dorsal horn. Interneurons, the pieces of this relay system, can enhance or delay the traffic flow by applying local excitatory or inhibitor connections. Thus they might inhibit action potentials from ...
731). The maintenance and experimental protocol used here were covered by an animal ethics permit (QBI/304/16). Animal handling and care was conducted following the general guidelines for care and husbandry of cephalopods in the European Union...
FIGURE 16.6.Primary hunting characteristics of squids and cuttlefish. (A) The cuttlefishSepiacapturing a shrimp; (B) basic body plan of the squidLoligo; (C) diagrammatic view of the “jet propulsion” and ventilating system of a cuttlefish. ...
Process changing relative positions of mouth, anus, shell, and mantle in gastropods Coiling Formation of planispiral shell with compact conispiral shape in gastropods Prosobranchs Subclass with marine snails, freshwater, and terrestrial gastropods Opisthobranchs Subclass mostly marine with detorsion, two...
Both Stenopterygius and mixosaurids are amongst the smallest-bodied ichthyosaurs in their respective ecosystems, and are known to have primarily preyed upon cephalopods as adults18,19. Because pathologies were not observed on the ribs and gastralia of our mixosaurid specimens, we were unable ...
In my view, the specific body plan of vertebrates has played a key role in the complexification and diversification of consciousness because it has favored an increasing integration between brain and body.doi:10.1007/s12304-023-09525-yMoreno, Alvaro...
This alternative Hau-Pax3/7A expression pattern was observed in those m clones whose posterior boundary – the site of any associated nephridiopore – will come to lie in rostral segments R2–4 and midbody segment M1 of the mature body plan. These particular clones express Hau-Pax3/7A as ...