anemone hupehensis/hypoxia

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Electrical and mechanical effects of anthopleurin-A, a polypeptide from a sea anemone, on isolated rabbit ventricular muscle under conditions of hypoxia and glucose-free medium.

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The effects of anthopleurin-A (AP-A, 1 x 10(-8) M) on the membrane action potential and contraction of isolated rabbit ventricular muscle were compared with those of ouabain (5 x 10(-7) M). Under control conditions, AP-A and ouabain showed submaximal (about 80% of maximal) positive inotropic effects

A polypeptide (AP-A) from sea anemone (Anthopleura xanthogrammica) with potent positive inotropic action.

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Anthopleurin-A (AP-A), a polypeptide with MW ca. 5500 (53 amino acids), isolated from the sea anemone, Anthopleura xanthogrammica (Brandt), elicited a potent positive inotropic effect but without an accompanying chronotropic effect on the isolated cardiac muscles of rat, rabbit, guinea pig and cat.

Clownfish in hypoxic anemones replenish host O2 at only localised scales.

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The clownfish-anemone association exemplifies a symbiosis where both members benefit from nutrient exchange and protection from predators. Clownfish also perform aeration-like behaviour in their host anemones at night, but it is not yet known whether this is stimulated by the onset of hypoxia, and

ADAPTATIONS TO ENVIRONMENTAL OXYGEN LEVELS IN INFAUNAL AND EPIFAUNAL SEA ANEMONES.

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1. Aerobic metabolism in Haloclava producta, a burrowing sea anemone, is largely or wholly dependent upon the oxygen supply in the water overlying its burrow. 2. This superficial water is brought through the burrow by an irrigation cycle of peristaltic waves. About 33% of the oxygen in the

Anemonefish oxygenate their anemone hosts at night.

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Many stony coral-dwelling fishes exhibit adaptations to deal with hypoxia among the branches of their hosts; however, no information exists on the respiratory ecophysiology of obligate fish associates of non-coral organisms such as sea anemones and sponges. This study investigated metabolic and

Influence of copper pre-exposure on biochemical responses of the sea anemone Bunodosoma cangicum to changes in oxygen availability.

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The influence of copper on the ability of the intertidal sea anemone Bunodosoma cangicum to cope with reactive oxygen species generation associated with changes in oxygen availability was evaluated. Sea anemones were kept under control condition or pre-exposed (96 h) to dissolved copper (6.1 μg ±

Diffusion Limitation and Hyperoxic Enhancement of Oxygen Consumption in Zooxanthellate Sea Anemones, Zoanthids, and Corals.

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Depending on their size and morphology, anthozoan polyps and colonies may be diffusion-limited in their oxygen consumption, even under well-stirred, air-saturated conditions. This is indicated by an enhancement of oxygen consumption under steady-state hyperoxic conditions that simulate the levels of

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