Upstream foraging by medusae

Fluid interactions that enable stealth predation by the upstream-foraging hydromedusa Craspedacusta sowerbyi.

Unlike most medusae that forage with tentacles trailing behind their bells, several species forage upstream of their bells using aborally located tentacles. It has been hypothesized that these medusae forage as stealth predators by placing their tentacles in more quiescent regions of flow around their bells. Consequently, they are able to capture highly mobile, sensitive prey. We used digital p...

The Osmotic Properties of Medusae

Caput medusae in alcoholic liver disease.

Caput medusae and palmar erythema are cardinal signs in cirrhosis of liver with portal hypertension. Palmar erythema is described more often as a marker for alcoholic etiology of chronic liver disease. The peripheral stigmata of chronic liver disease are not routinely seen now a days due to early diagnosis and better therapy. We recently encountered an interesting patient of alcoholic liver dis...

Mesodermal anatomies in cnidarian polyps and medusae.

The cellular and developmental analysis of evolutionary-conserved genes directing bilaterian mesodermal and myogenic cell fate previously identified the hydromedusan entocodon and its differentiation product, the striated muscle, as mesodermal derivatives. In view of these findings we presented a hypothesis disputing the diploblast classification of cnidarians without providing further explanat...

Caput Medusae in medicine and art.

prizes for doctors working on immunity were those received in 1960 by Sir Macfarlane Burnet (35) and Sir Peter Medawar for their work in acquired immunological tolerance to tissue transplants. The 1913 medicine prize was awarded to Charles Robert Richet, 1850-1935, the French physiologist, for his work on serology and serum treatment. Together with the French bacteriologist Paul Jones Portier, ...