In the studied areas, four types of encrusters were recorded, in descending order of abundance they are: balanoid barnacles, polychaetes, bivalves and bryozoa.
The balanoid barnacles Balanus perforatus is the most common encrusters in the studied areas.
Balanoids, polychaetes, bivalves and bryozoans are the recorded encrusters.
The first cellular changes observed are epithelial hyperplasia, balanoid degeneration of the stratum spinosum cells, hyperplasia of the basal membrane of the epidermis, edema and granulomatous inflammation and in a few days the lesions become pustules (1).
In some sections of the lucid and granular stratum, the keratinocytes are degenerated (balanoid degeneration) with pyknotic nuclei and eosinophilic and refractile intracytoplasmic inclusions.
In the histopathology, skin samples showed hyperkeratosis, balanoid degeneration of keratinocytes, neutrophilic infiltrated, intracytoplasmic, eosinophilic inclusion bodies, neovascularization with congestion, edema and hemorrhage.
Although other molecular data sets are available (e.g., Sotka et al., 2004), estimates of the substitution rate [mu] have only been calculated for this portion of the mtCOI locus in balanoid barnacles (see Materials and Methods).
New genera and species of balanoid barnacles from the Oligocene and Miocene of North Carolina.
Three types of encrusters were recorded on shells of the present study: balanoid barnacles polychaetes and bivalves (Spondylus and oysters) The most common encruster (52%) in the studied area is the balanoid barnacles genus Balanus.
It is supposed that balanoid barnacles are able to orientate to water movement in order to allow for efficient food collection over a wide range of conditions (El-Hedeny 2007a).
We report here that all of the eyes of both the nauplius and cyprid larvae of balanoid barnacles are labeled when incubated in [H.sup.3]-histamine, but that other tissues in the animal are not.
A field study of settlement behaviour in Balanus balanoides and Eliminius modestus (Cirripedia: Crustacea) in relation to competition between them.