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.com
Volume 6
Journal of Infectious Diseases & Therapy-Open Access
Infectious Diseases Congress 2018
November 15-16, 2018
November 15-16, 2018 Istanbul, Turkey
6
th
Annual Conference on
Parasitology & Infectious Diseases
Donax trunculus
(Bivalvia, Donacidae) Infestationwith
Bacciger bacciger
(Trematoda, Fellodistomidae)
at Port Said coastal zone (Mediterranean Sea)
Ramadan A M Ramadan
Agriculture Research Center, Egypt
I
nfection of
Bacciger bacciger
in the
Donax trunculus
was studied in samples collected from the Mediterranean coast at Port
Said coastal zone. Sporocysts of
Bacciger bacciger
were embedded in gonadal tissue of the bivalve
Donax trunculus
. Sporocysts
of B. bacciger were demonstrated in 504 of 1200 clams examined with overall prevalence of infection reaching 73.69%. The
prevalence increased to 24% of
D. trunculus
with shell length 34 mm, while individuals less than 15 mm shell length were not
infested with
B. bacciger
. Seasonality was recognized in prevalence of infection. The proportion of infected individuals of both
sexes was nearly similar (6.56% in males and 8.04 % in females). The proportion of infected clams reduced to virtual castrates
of unknown sex reached 28%. The tegument of the sporocyst and cercariae were studied by light microscopy. A birth pore on
one side of the sporocyst, uniciliate sensory organs and cup-shaped sensory-like structures were present on the tegument. The
cercarial body had spines and uniciliate sensory organs. The ventral sucker of the cercariae had 2 rings of uniciliate sensory
organs and supported with tegumental spines. Histopathological effect of
Bacciger bacciger
on
Donax trunculus
was studied and
discussed. Results revealed that the most common sites of the sporocyst occurrence were the interfollecular connective tissues
in the gonads and muscle fibers of the foot. Degenerative follicles hypertrophy and hyperplastic changes of the connective
tissues, granular haemocytes and separation between germ cells and follicular epithelium were the main histological features of
the infection in the male
D. trunculus
gonad. While, vacuolization, necrosis and derangement of muscle fibers of foot were the
most histological features observed in infected feet by sporocyst. The Siphonal tissue of infected
Donax
was free of sporocysts.
The increase in goblet cells and movement of subepithellial mucous glands towards the outer surface were indications of
defense against B. bacciger infection. The present results indicated that
B. bacciger
promotes a severe castration in the bivalve
Donax trunculus.
Biography
Ramadan A M Ramadan is currently working in the Fish Diseases Department at Central Lab. For Aquaculture Research (El-Abbassa), Agriculture Research
Center, Egypt. His Present research or professional specialties are in Parasitogy of freshwater and marine fish, crustaceans and molluscs.
dr_ramadan2014@yahoo.comRamadan A M Ramadan, J Infect Dis Ther 2018, Volume 6
DOI: 10.4172/2332-0877-C5-050