Name: Maather Mohamed Moneer Taha Aly El-Lamie
Adress: Faculty of Veterinary Medicine, Seuz Canal University,
Ismailia.
Birth Date: December, 25th, 1975, Ismailia, Egypt.
Civil status: married.
Position: lecture of fish diseases and management.
Education:
B.V. Sc. Faculty of Vet. Medicine, Seuz Canal Univ., 1997.
M.V. Sc. (Fish diseases and management, 2001), Faculty of Vet.
Medicine, Seuz Canal Univ.
Ph. D. (Fish diseases and management, 2007), Faculty of Vet.
Medicine, Seuz Canal Univ.
Previous professional positions:
Demonstrator of poultry and fish diseases department
(December, 1997), Faculty of Vet. Medicine, Seuz Canal
University.
of poultry and fish diseases department (Fish diseases and
management, December, 1998) Faculty of Vet. Medicine,
Seuz Canal University.
Assistant lecture of poultry and fish diseases department (Fish
diseases and management, July, 2001), Faculty of Vet.
Medicine, Seuz Canal University.
Lecture of fish diseases and management department (April,
2007), Faculty of Vet. Medicine, Seuz Canal University.
Background Scientific Experience:
Sharing in teaching of the undergraduate courses of fish
diseases and management for the fourth degree in Faculty of
Vet. Medicine, Seuz Canal University .
Sharing in conferences in Faculty of Vet. Medicine, Seuz Canal
University and in National research center.
M.V. Sc.
*******
Studies on the diseases resulting from encysted metacercariosis
in some freshwater fishes.
Summary:
********
This study was carried out on 200 freshwater fishes including
100 Oreochromis niloticus and 100 Clarias lazera. The results of
these investigations could be summarized as follow:
The clinical picture revealed general emaciation, skin darkening
with excessive mucus secreation, detached scales in scally
fishes as well as white spots on skin of some fishes. The
most characteristics black spots were also seen in skin and
fins of naturally infected Oreochromis niloticus. Yellow to
orange cysts present on the skin of some naturally infected
Oreochromis niloticus.
The postmortem findings of such fishesrevealed variable sized
skin erosions and ulceration and variable sized grayishwhite nodules in muscle and different internal organs, in
Clarias lazera. Yellow to orange pea-sized encysted and
existed metacercariae arranged in grape-like structure
attached or embedded into branchiostegal musculature of
Oreochromis niloticus.
The prevalence of encysted metacercariae in examined fishes
was 70% and 83% among O. niloticus and C. lazera.
The seasonal prevalence of encysted metacercariae in O.
niloticus was the highest in winter season (100%) followed
by summer (92%), spring (60%) and the lowest was in
autumn (28%) and the prevalence of encysted metacercariae
among C. lazera was the same in winter, spring and summer
seasons (84%) followed by autumn.
The prevalence of encysted metacercariae in relation to sex
among O. niloticus and C. lazera that (71.43% and 56.62%)
in males and (28.57% and 43.37%) in females, respectively.
The prevalence of encysted metacercariae among muscles and
different internal organs revealed that the highest
prevalence among O. niloticus was in gills (74.28%) and
the lowest prevalence was in gonads (0%). On the other
hand, the higheswt prevalence of encysted metacercariae
among C. lazera was in muscles (79.5%) and the lowest
prevalence in skin, fins, scales and eyes (0%).
The prevalence of encysted metacercariae in relation to weight
revealed that, there was a positive correlation between the
prevalence of encysted metacercariae and the weight of
infected O. niloticus. While in C. lazera there was no
specific relation between weights and prevalence of
encysted metacercariae.
The prevalence of encysted metacercariae in relation to length
revealed that, there was a positive correlation between
prevalence of encysted metacercariae and length of O.
niloticus while there was a negative correlation between
prevalence of encysted metacercariae and length of C.
lazera.
The type of EMC obtained from different infected fish species
include: Heterophids, Clinostomatids, Euclinostomatids,
Prohemistomatids,
Cyanodiplostomatids
and
Diplostomatids.
The experimental infection of chickens aged (4-5 weeks) with
encysted metacercariae from muscles of C. lazera recovered
the following types of trematodes: Prohemistomum vivax
and Mesostephanus appendiculatus.
While thw experimental infection of chickens aged 2 weeks,
pigeons aged 2 weeks, white rats aged 4 weeks with encysted
metacercariae from muscles of C. lazera failed to mature in
their intestines.
The histopathological findings were as follows
Gills showing cross section of EMC in the gill arch
together with fibrous tissue capsule, edema and
mononuclear leukocytic infiltration.
Muscles showing multiple number of parasitic cysts
surrounded by connective tissue capsule, edema,
pressure atrophy and hayaline degeneration as well as
some mononuclear cells.
Heart showing parasitic cyst surrounded by connective
tissue capsule and degenerated as well as necrotic
myocardium.
Liver showing EMC surrounded by thick connective tissue
capsule,
melanomacrophage
cells,
degenerated
hepatocytes. In some cases, there was parasitic cyst in
the portal area surrounded by fibrous tissue
proliferation, edema and mononuclear leukocytic
infiltration.
Kedneys showing parasitic cysts surrounding by
connective tissue capsule and degenerated as well as
necrotic renal tubules with mononuclear cells
infiltration.
Ph.D.
****
Studies on the parasitic diseases in some marine fish
Symmary:
********
Nowadays, fish, especially marine fishes; are considered a very
important source of animal protein for most of human beings. from this
point, this study have been applied on 300 marine fish (100 Morone labrax,
100 Scomberomorus commerson and 100 Siganus revulatus) which have
been randomly collected from at Suez and Ismailia Provinces at different
seasons with different sizes and body weights.
The results are summarized as follow:
1. The main clinical signs revealed no pathognomonic clinical abnormalities.
Some infested fishes showed bulging of operculi, swimming near the water
surface, rubbing the body against hard objects, haemorrhages, abrasions and
ulcers allover the body, sluggish movement, abdominal distension and
emaciation.
2. The postmortem findings were (Marbling) with excessive mucus
secretion, sticking of the gill tips and greyish coloration. In some cases, liver
was pale with peticheal haemorrhage, stomach and intestine showed
congestion and distension with enteritis in some cases.
3. The total prevalence of parasitic infestation among examined fishes was
70%. The highest prevalence was recorded among S. commerson (82%)
followed by M. labrax (72%) and S. revulatus (56%).
4. The identified parasites were:
Monogenetic trematodes with prevalence of 50.3% as (Paranella
diplodae Bayoumy et al., 2006 and Pseudohaliotrematoids polymorphus
eilaticus Paperna, 1972) isolated from gills of S. revulatus and
Neothoracocotyle commersoni Abdel Aal et al., 2001 and Pricea
multae Chauhan, 1945 isolated from gills of S. commerson.
Digenetic trematodes with prevalence of 8% as Erilepturus hamati
Yamaguti,
1934, Propycnadenoids
Pseudocreadium
Sohali Nagaty,
secundus Hassanin,
1942 and
1995,
Pacificreadium
serrani Nagaty and Abdel Aal, 1962 isolated from intestine of M. labrax
while
Acanthostomum
chinensis Shrjabin
&
imbutiforms Molin,
Guschanskaja,
1959
1955
and
and
Tangiopsis
Podocotyle
parpupenai Manter, 1963, isolated from stomach and intestine of M.
labrax.
Nematode parasite and Acanthocephalan parasite with prevalence 3.33%,
5%
respectively
as Procamallanus
Inopenatus Tavassos,
1928
and Neohydinorhynchus macrospinosus Tubangui et Masilungan, 1937
isolated from intestine of S. revulatus.
Crustacean
parasites
with
prevalence
15.67%
as
Lernanthropus
psciaenae Badawy, 1994 isolated from gills of M. labrax and Caligus
carangis Badawy, 1994 isolated from gills, buccal cavity and skin of M.
labrax
5. The prevalences of monogeneasis among M. labrax, S. commerson and S.
revulatus were 28%, 82% and 41%, respectively.
6. The prevalence of digeneasis among M. labrax was 24% while S.
revulatus and S. commerson were free.
7. The prevalence of nematodiasis among S. revulatus was 10% while M.
labrax and S. commerson were free.
8. The prevalence of acanthocephalosis among S. revulatus was 15% while
M. labrax and S. commerson were free.
9. The prevalence of crustacean infestation among M. labrax was 47%
while S. commerson and S. revulatus were free.
10. The total seasonal prevalence of the detected parasites was the
highest in winter (81.3%) and the lowest in summer (53.3%). The highest
prevalence in M. labrax was (84%) in both autumn and spring and the
lowest in summer (40%). In S. commerson , it was the same in spring and
summer (92%) followed by autumn and winter (72%) . In S. revulatus, the
highest prevalence was in winter (92%) and the lowest was in summer
(28%).
11. The total seasonal prevalence of monogeneasis was the highest in
Spring (68%) and the lowest in autumn (40%). In M. labrax, it was the
highest in Spring (52%) and the lowest in Winter (12%) and in S.
commerson was the same in winter, spring and summer (92%) and the
lowest in autumn and summer (24%) while in S. revulatus, the prevalence
was the highest in spring (60%) and the lowest was in summer (28%).
12. The seasonal prevalence of digeneasis among M. labrax was the
highest in winter (48%) and the lowest was in summer (0%) while there
were no records in S. commerson and S. revulatus in all seasons.
13. The seasonal prevalence of nematodiasis and acanthocephalosis
among S. revulatus was the highest in winter (40%, 60%) respectively and
with no record in other seasons (0%).There was no records in S. commerson
and S. revulatus.
14. The seasonal prevalence of crustacean infestation among M. labrax
shows its peak at autumn (76%) and the lowest in summer (16%) while in S.
commerson and S. revulatus there was no records.
15. Out of 72 M. labrax infested specimens, 48 (66.66%) showing single
infestation while 24 (33.33%) recorded as mixed infestation. The single
infestation rates were 14 (19.4%), 6 (8.33%) and 28 (38.8%) for
Monogeneasis, Digeneasis and Crustacean infestation respectively while the
total mixed infestation rate was 33.33%. The mixed infestation rates were 5
(6.94%), 6 (8.33%), 10 (13.88%) and 3 (4.16%) for (Mono.+ Dig.), (Mono.+
Crust.), (Dig.+ Crust.), (Mono+ Dig. +Crust.), respectively.
16. Out of 56 S. revulatus infested specimens, 47 (83.90%) showing single
infestation while 9 (16.07%) recorded as mixed infestation.. The Single
infestation rates were 33 (58.9%), 6 (10.71%) and 8 (14.28%) for
Monogeneasis, Nematodiasis and Acanthocephalosis while the mixed
infestation rates were 2 (3.57%), 5 (8.92%), 1 (1.78%) and 1 (1.78%) for
(Mono. + Nem.), (Mono.+ Acanth.), (Nem.+ Acanth.) and (Mono.+ Nem.+
Acanth.) respectively.
17. There was no relationship between length and prevalence of
monogenean infestation in the examined fish species.
18. In M. labrax a positive relationship between length and prevalence
of digenean infestation.
19. In M. labrax, there was a positive relationship between length and
prevalence of crustacean infestation at all lengths except at 25-30 cm.
20. In S. revulatus, there was a positive relationship between length and the
prevalence of infestation with nematodes and acanthocephalan parasites
except at lengths from 25-30 Cm. for acanthocephalan infestation only.
21. M. labrax, S. commerson and S. revulatus showed no relation between
weight of fish and prevalence of monogenean infestation.
22. M. labrax show no relationship between fish body weights and the
prevalence of digenean infestation and crustacean infestation.
23. In S. revulatus, there was a positive relationship between fish weights
and nematode infestation.
24. Prevalence of acanthocephalan infestation among S. revulatus showed
positive relationship at weights < 150 g. while weights from 150-300 g. are
free from infestation.
25. Statistical analysis shows a significant positive correlation between
(host body weight and length) of (S. commerson and S. revulatus) and
monogeanean number/ fish while in M. labrax weight only was positively
correlated with monogenean number/ fish.
26. Histopathological changes due to monogenetic trematodes were severe
hyperplasia, destruction, congestion, mononuclear cell infiltration and
vacoulation of the epithelial lining of secondary lamellae. Intestine affected
with digenetic trematodes showed severe congestion of the submucosal
blood vessels along with degeneration of the mucosa while that infested with
acanthocephaln parasite showed destruction of the mucosa and that with
nematode infestation showed hyperplasia of the intestinal mucosa,
congestion of mucosal blood vessels along with leukocytic infiltration.