August 7, 2017.
Australia hot news.
Sea lice attacked an Australian teen in Melbourne.
An Australian teen was attacked on foot at Australian
beaches by creatures suspected of being Sea lice. Sam Kanizay, 16, of
Melbourne, came to the beach on Saturday to soak his legs after a soccer game .
His father quickly took him to a nearby hospital and
reported that there were hundreds of small bites in size on the boy's legs and
ankles.
Michael Keough is a marine biologist of the University of
Melbourne, who said that if it is sea lice, then it is a pretty dramatic
example of it.
In addition, marine experts suggest that parasitic sea lice
may be to blame.
More info about Sea lice:
The sea louse (plural sea lice) is a family of copepods
within the order Siphonostomatoida, the Caligidae. Sea lice are marine
ectoparasites (external parasites) that feed on the mucus, epidermal tissue,
and blood of host marine fish.
Many sea louse species are specific with regard to host
genera, for example L. salmonis which has high specificity for salmonids,
including the widely farmed Atlantic salmon (Salmo salar). Lepeophtheirus
salmonis can parasitize other salmonids to varying degrees, including brown
trout (sea trout: Salmo trutta), Arctic char (Salvelinus alpinus), and all
species of Pacific salmon.
Sea lice have both free swimming (planktonic) and parasitic
life stages. All stages are separated by moults. The development rate for L.
salmonis from egg to adult varies from 17 to 72 days depending on temperature.
Sea lice cause physical and enzymatic damage at their sites
of attachment and feeding which results in abrasion-like lesions that vary in
their nature and severity depending upon a number of factors.
These include host species, age and general health of the
fish. It is not clear whether stressed fish are particularly prone to
infestation. Sea lice infection causes a generalized chronic stress response in
fish since feeding and attachment cause changes in the mucus consistency and
damage the epithelium resulting in loss of blood and fluids, electrolyte
changes, and cortisol release.
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AUGUST 07,2017.
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