...Jack Cushman Koch; E. Alan Verde; Virginia M. Weis ABSTRACT Carbonic anhydrases (CA; EC 4.2.1.1) play a vital role in dissolved inorganic carbon (DIC) transport to photosynthetic microalgae residing in symbiotic cnidarians. The temperate sea anemone Anthopleura elegantissima can occur in three...

... organisms such as sea anemones and sponges. This study investigated metabolic and behavioral interactions between two-band anemonefish ( Amphiprion bicinctus ) and bulb-tentacle sea anemones ( Entacmaea quadricolor ) at night. We measured the net dark oxygen uptake ( , μmol O 2 h −1 ) of fish–anemone pairs...

... and that this can provide much of the host's total energy. However, it has remained unclear which metabolite(s) are directly translocated from the algae into the host tissue. We reexamined this question in the small sea anemone Aiptasia using labeling of intact animals in the light with 13 C-bicarbonate, rapid...

... in intracellular calcium concentration, [Ca 2+ ] i , which could then cause collapse of the cytoskeleton and perturb cell adhesion. Electron paramagnetic resonance measurements of plasma membranes from the tropical sea anemone Aiptasia pulchella and the Hawaiian coral Pocillopora damicornis labeled with 2,2,6,6...

...V. Haktan Ozacmak; Glyne U. Thorington; William H. Fletcher; David A. Hessinger SUMMARY Cnidocytes, the stinging cells of cnidarians, optimally discharge nematocysts in response to combined physical contact and stimulation of specific chemoreceptors. In the tentacles of certain sea anemones...

... on everything from sea anemone mesoglea to organism size and shape. I have appreciated his feedback and encouragement throughout my career. My unpublished research mentioned in this paper was supported by NSF grants OCE-9217338 and OCE-9907120 (to M.K.) and OCE-9530153 (to R. Paine), a National Geographic...

...Diane Hudman; Ian D. McFARLANE ABSTRACT L-Dopa evokes transitory inhibition of spontaneous contractions of tentacle longitudinal muscles in sea anemones. It also modulates spontaneous contractions of the sphincter muscle in isolated preparations and whole animals. Extracellular recordings from...

...Kwangwook Cho; Ian D. Mcfarlane ABSTRACT Glass microelectrodes were used to record electrical activity from thin rings cut from the column of the sea anemone Calliactis parasitica . This is the first time that pulses have been recorded from the nervous system in the column. Three pulse types were...

...Glen M. Watson; David A. Hessinger ABSTRACT Sea anemones capture prey by discharging nematocysts into them. Chemical and mechanical cues identify suitable prey to sensory receptor systems on the anemone. Conjugated N -acetylated sugars from prey bind to chemoreceptors on cnidocyte/supporting cell...

...Molly A. Holman; Peter A. V. Anderson ABSTRACT Myoepithelial cells were isolated from the apical ends of mesenteries of the sea anemone Calliactis tricolor and examined using the whole-cell configuration of the patch-clamp technique. The isolation procedure produced cell fragments that were...

... muscles in four species of sea anemone. In a fifth species, Protanthea simplex , Antho-RWamide II, but not Antho-RWamide I, evoked contractions of body wall muscles. Isolated, trimmed sphincter muscle preparations of Calliactis parasitica contracted at a threshold concentration of 10 −9 moll −1 Antho...

...Ian D. McFarlane; Cornelis J. P. Grimmelikhuijzen ABSTRACT Behavioural coordination in sea anemones involves both excitation and inhibition. Examples include reciprocal inhibition between longitudinal and circular muscles ( Batham and Pantin, 1954 ), inhibitory actions during peristalsis ( Ewer...

.... Blunt-tipped forceps were used to prod the sea anemone until it expelled acontia through the cinclides. The acontia were cut at the basal end with fine scissors and were used immediately or stored in sea water prior to use. Specimens of Calliactis tricolor (Lesueur) were collected on the shells...

...Peter E. Pickens ABSTRACT The sand-dwelling sea anemone, Phyllactis concinnata , buries itself by attaching sand grains to the lower column as this is bent under the anemone by a travelling peristaltic wave. Some of the sand is then released as the column expands laterally. Once buried, the anemone...

...I. D. McFARLANE; D. Graff; C. J. P. Grimmelikhuijzen ABSTRACT In the sea anemone Calliactis parasitica endodermal application of the anthozoan neuropeptide Antho-RFamide (<Glu-Gly-Arg-Phe-amide), at a concentration of 10 −6 or 10 −7 moll −1 , caused a long-lasting increase in tone, contraction...

.... It is proposed that the TCNN and the SS1 do not excite the ectodermal muscles directly, but via a multipolar nerve net. 02 06 1983 © 1984 by Company of Biologists 1984 Nerve net contraction sea anemone Multiple conducting systems coordinate the behaviour of sea anemones...

.... It is suggested that in sea anemones the change from one behavioural phase to another is associated with a change in the patterned output of nerve net pacemakers. REFERENCES Batham , E. J. & Pantin , C. F. A. ( 1950 ). Phases of activity in the sea anemone, Metridium senile (L...