Niebezpieczne meduzy dotarły do Morza Śródziemnego

Bluebottles and Pacific man-o-war

[osmanthus]

Bluebottles and Pacific man-o-war
Physalia species cause stings that are similar to those from
jellyfish although these animals are siphonophores (hydrozoans) and
not jellyfish (scyphozoans and cubozoans). About 10-30,000 stings
each year are reported along the east coast of Australia from
Physalia with about 500 reported from Western Australia and South
Australia. No fatalities have been confirmed from these animals in
the Southern Hemisphere but there have been several fatalities from
related species in the Northern Hemisphere.





The bluebottle

Photo by Lisa-ann Gershwin


Instead of the usual jellyfish bell, Physalia have a gas-filled sac
that floats on the surface of the water and tentacles that hang
underneath. Physalia can change the orientation of its float and use
it to ‘sail’ with the wind. There are stinging cells (or
nematocysts) in rows along the tentacles. The life cycle of these
stingers is not known.

The bluebottle Physalia utriculus is Australia’s most common
species. It has a blue float usually 20-80mm long (but can be up to
150mm long) which is wrinkled on the top. The bluebottle has a
single main retractile tentacle hanging from the float that can be
contracted to a few centimetres or extended to several metres long.
Many shorter smaller tentacles may also hang from the float. The
bluebottle is found in vast numbers on the eastern Australian coast
every year. They also occur in South and Western Australia. The
sting causes immediate pain which can last more than an hour. The
pain is usually in the lymph glands draining the arms and legs.

It is possible that there are two other species of Physalia that are
much larger than the bluebottle and have both been called Pacific
man-o-war. The Pacific man-o-war is related to the Portuguese man-o-
war from the Atlantic Ocean. The float of the Pacific man-o-war is
100-150mm long compared with the Portuguese man-o-war which has a
float which can be 250-300mm long. The float of the Pacific man-o-
war has 7-8 long retractile tentacles and many shorter, fine
tentacles hanging from it. The long retractile tentacles can be
extended to 10 metres long. The Pacific man-o-war causes a sting
which is more painful than those from the bluebottle. The pain can
be relieved by cold packs. In some cases, the victim may suffer a
moderate Irukandji-like syndrome with back pain, and muscle cramps
in the limbs, abdomen and chest.

Za 15-20 lat będą w Bałtyku

[adwach]

jw.

Niebezpieczne meduzy dotarły do Morza Śródziemnego

[tovotek]

..ale bzdury tu piszecie , autor chyba wcześniej pisywał w toalecie na
ścianach.. Najbardziej niebezpieczna jest meduza OSA MORSKA , ty
palancie!! Zanim coś napiszesz to SPRAWDŹ!!