Clione


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Clione

 

(Clione limacina), a genus of invertebrates of the order Aplacophora of pteropod mollusks. The body (up to 4 cm long) is transparent and conical; the head is separate and has two pairs of feelers. Clione are found in a wide range, living suspended in seas at great depths; in the USSR they live in northern and Far Eastern seas. They occur in huge numbers and serve as food for several species of whalebone whales.

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Injection of GABA into the hemocoel of Clione limacina, however, evoked elements of its complex predatory behavior, including tentacle protraction, mouth opening, and rhythmic movements of the buccal mass (Arshavsky et al., 1991, 1993).
Further species mentioned in the Discussion: Clione vermifera Hancock, 1867, Pione carpenteri (Hancock, 1867), Siphonodictyon crypticum (Carballo et al., 2007).3 Total species counts are based on analyses without spicule preparations: Quadrat and intercept studies relate largely to preliminary species identifications in the field, while for all material foundin rubble quick pluck preparations were made.
DA contracts the somatic posture muscles in the pteropod mollusc Clione limacina, whereas ergometrine relaxes these muscles (Salcharov and Kabotyansky, 1986).
The exception is the polar opisthobranch Clione limacine, which has been reported to present a percentage of 17:0 up to 4% (Phleger et al.
GABAergie excitatory synapses and electrical coupling sustain prolonged discharges in the prey capture neural network of Clione limacina.
In gastropod embryos and adults, a similar expression pattern is restricted to the anterior, medio-dorsal parts of cerebral ganglia, as seen in the vetigastropod Haliotis (Barlow and Truman, 1992; Hinman et al, 2003), the caenogastropod Crepidula (Dickinson et al., 1999), and in many heterobranch species, e.g., Helisoma (Goldberg and Kater, 1989), Lymnaea (Croll and Chiasson, 1989), Aplysia (Dickinson et al., 2000), and Clione (Slatternly et al., 1995), and even in cephalopods, e.g., Idiosepius and Octopus (Shigeno et al., unpubl.
Yuri Panchin for critical comments and discussions related to the diversity of ionotropic glutamate receptors in molluscs and Clione limacina in particular.
Cerebral neurons underlying prey capture movements in the pteropod mollusc, Clione limacina.
Neuronal analysis of hunting behavior of the pteropod mollusc Clione limacina.
Conover and Lalli (1972) kept the pteropod Clione limacina "indefinitely" in small dishes and beakers with filtered water.
It has been described for at least 47 species (reviewed by Farmer, 1970), and the neural mechanisms underlying swimming have been investigated in detail in four of these: Pleurobranchaea californica (Jing and Gillette, 1995, 1999), Tritonia diomedea (Willows et al., 1973; Hume et al., 1982; Getting, 1983), Clione limacina (Arshavsky et al., 1985; Satterlie, 1985, 1991; Satterlie and Spencer, 1985; Satterlie et al., 1985; Satterlie and Norekian, 1996), and Aplysia brasiliana (von der Porten et al., 1982; McPherson and Blankenship, 1991a,b).