Developmental expression of glutamic acid decarboxylase and of γ‐aminobutyric acid type B receptors in the ascidian Ciona intestinalis
- G. Zega, M. Biggiogero, R. Pennati
- BiologyThe Journal of comparative neurology
- 20 January 2008
Results from this work show that GABA is the most widespread inhibitory neurotransmitter in C. intestinalis nervous system and that it can signal through GABAB receptors both pre‐ and postsynaptically to modulate different sensory inputs and subsequent swimming activity.
Gorgonian population recovery after a mass mortality event
- C. Cerrano, A. Arillo, G. Bavestrello
- Environmental Science
- 1 March 2005
The average size of the colonies decreased, indicating a size-dependent mortality episode, but their density, as a result of successful recruitment, was not altered after 3 yr, and P. clavata showed three recovery patterns: sexual reproduction, coenenchyme regeneration and fragmentation of affected branches.
Toxic effects of two pesticides, Imazalil and Triadimefon, on the early development of the ascidian Phallusia mammillata (Chordata, Ascidiacea).
- R. Pennati, S. Groppelli, G. Zega, M. Biggiogero, F. de Bernardi, C. Sotgia
- BiologyAquatic Toxicology
- 12 September 2006
Dopamine and serotonin modulate the onset of metamorphosis in the ascidian Phallusia mammillata.
- G. Zega, R. Pennati, S. Groppelli, C. Sotgia, F. de Bernardi
- Biology, PsychologyDevelopmental Biology
- 1 June 2005
Development of swimming behaviour in the larva of the ascidian Ciona intestinalis
- G. Zega, M. Thorndyke, E. Brown
- BiologyJournal of Experimental Biology
- 1 September 2006
It is shown that Ciona larvae swim for longer periods and more frequently during the first hours after hatching, and this results provide a starting point for future studies that aim to characterize the nervous control of ascidian locomotion, in wild-type or mutant larvae.
Immunohistochemical analysis of the adhesive papillae of Botrylloides leachi (Chordata, Tunicata, Ascidiacea): Implications for their sensory function
- R. Pennati, G. Zega, S. Groppelli, F. de Bernardi
- Biology
- 30 November 2007
By immunohistochemical localization of serotonin and β‐tubulin, it is demonstrated that the adhesive papillae of Botrylloides leachi contain two distinct types of neurons with different localization and possibly a different function.
Effects of the azole fungicide Imazalil on the development of the ascidian Ciona intestinalis (Chordata, Tunicata): morphological and molecular characterization of the induced phenotype.
- G. Zega, F. de Bernardi, S. Groppelli, R. Pennati
- BiologyAquatic Toxicology
- 19 February 2009
Complex neural architecture in the diploblastic larva of Clava multicornis (Hydrozoa, Cnidaria)
- S. Piraino, G. Zega, H. Reichert
- BiologyThe Journal of comparative neurology
- 1 July 2011
The organization of the cnidarian nervous system has been widely documented in polyps and medusae, but little is known about the nervous system of planula larvae, which give rise to adult forms after…
WAY-100635, an antagonist of 5-HT1A receptor, causes malformations of the CNS in ascidian embryos
- R. Pennati, S. Groppelli, C. Sotgia, G. Zega, M. Pestarino, F. Bernardi
- BiologyDevelopment, Genes and Evolution
- 25 March 2003
Immunofluorescence experiments showed that the anterior neural system of treated animals was radically altered by the action of the drug in a dose-dependent way, suggesting that 5-HT plays a role in the development of the neural system in ascidians and its action is mediated by receptors similar to the members of the 5- HT1A receptor subtype of mammals.
Serotonin involvement in the metamorphosis of the hydroid Eudendrium racemosum.
- G. Zega, R. Pennati, A. Fanzago, F. de Bernardi
- BiologyInternational Journal of Developmental Biology
- 2007
Results showed that 5-HT could stimulate metamorphosis in E. racemosum planulae in the presence of a natural inducer and a mechanism by which this neurotransmitter could act in this phase is proposed.
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