Radula morphology of Clione limacina (Phipps, 1774) (Gastropoda: Heterobranchia: Gymnosomata)

Giant embryos and hatchlings of Antarctic nudibranchs (Mollusca: Gastropoda: Heterobranchia)

of development up to ready-to-hatch juveniles 2.5 mm in length. Based on their morphology and development in egg masses maintained in the laboratory, the embryonic period for B. hodgsoni is estimated to be up to 10 years, and for D. kerguelenensis 13 months. Thus, B. hodgsoni has the largest egg capsules and probably the largest hatchlings of any mollusc. Chemical analyses of D. kerguelenensis ...

Panpulmonate habitat transitions: tracing the evolution of Acochlidia (Heterobranchia, Gastropoda)

The evolution and diversification of euthyneuran slugs and snails was likely strongly influenced by habitat transitions from marine to terrestrial and limnic systems. Wellsupported euthyneuran phylogenies with detailed morphological data can provide information on the historical, biological and ecological background in which these habitat shifts took place allowing for comparison across taxa. A...

Cepaea hortenSiS (O. F. Müller, 1774) (MOllusCa: GastrOpODa) IN CrOatIa?

Coordinated Excitatory Effect of GABAergic Interneurons on Three Feeding Motor Programs in the Mollusc Clione limacina

248 words; Text: 27 pages; Figures: 10; Tables: 0 Contacts: Dr. Norekian Arizona State University, School of Life Sciences Tempe, AZ 85287-4501, USA Phone: (480)965-4027; FAX: (480)965-6899 E-mail: [email protected] Articles in PresS. J Neurophysiol (August 25, 2004). doi:10.1152/jn.00722.2004 Copyright © 2004 by the American Physiological Society. Coordination of Neural Networks 2 Abstra...

Buccal neurons activate ciliary beating in the foregut of the pteropod mollusk Clione limacina.

Beating of cilia lining the foregut of gastropods facilitates the swallowing of food and, therefore, plays a role in feeding behavior. Despite the fact that neural control of feeding is well studied in mollusks, no neurons controlling ciliary beating in the foregut have been identified to date. Here we describe for the first time a pair of buccal neurons innervating the foregut of Clione. Intra...