Tubularia crocea L. Agassiz in British Waters

Chemotactic Turning Behaviour of Tubularia Spermatozoa

Chemotaxis of spermatozoa to female gonophores has been shown to occur in Campanularia, Tubularia and other hydroids (Miller, 1966 a, b). Cinemicrographic records of the movements of Campanularia spermatozoa in the vicinity of female gonophores or of glass capillary pipettes containing extracts of female hydranths have shown that chemotactic aggregation of the spermatozoa occurs because the spe...

Transcriptome Analysis Reveals L-amino Acids as Olfactory Stimulant in the Large Yellow Croaker (Larimichthys crocea)

Fish perceived small molecules with high aqueous solubility by chemoreception. The chemical senses of fish can be divided into olfaction, gustation and less well defined sense which is represented by the general chemical senses and the existing chemosensory cells [1,2]. Fish olfactory sense can detect four main classes of chemicals (odorants) mainly; amino acids, gonadal steroids, bile acids an...

First records of Bolinopsis vitrea (L. Agassiz, 1860) (Ctenophora: Lobata) in the Black Sea

The ctenophore Bolinopsis vitrea is first reported from the Turkish and Bulgarian regions of the Black Sea. In Turkish waters, a considerable aggregation was found in Sile on the Asian side and at Kilyos on the European side in 2007. This appears to be the first record of this species in the Black Sea, which is known in the Mediterranean Sea including the Aegean Sea. Bolinopsis vitrea most like...

Inhibition of pacemaker systems in the hydroid Tubularia.

A number of phenomena have been described in Cnidaria which indicate that inhibition is one of the factors controlling behaviour in these, the most simply organized living animals with indisputable nervous systems (Table 1). Although the presence of inhibition in a number of species of Cnidaria is well documented, in no case is the mechanism of inhibition understood. An example of inhibition wh...

The time course of pacemaker inhibition in the hydroid Tubularia.