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Parasitology > Protozoa - Coccidia of chicken and goose > Flashcards

Protozoa - Coccidia of chicken and goose Flashcards

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1
Q

Where does the merozoite develop?

A: Inside schizont
B: In oocyst
C: In sporocyst
D: Duodenum

A

A: Inside Schizont

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2
Q

How many cells can be infected by a merozoite of Eimera?

A: 2
B: 4
C: 8
D: 1

A

D: 1

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3
Q

How many gamonts can develop from one schizont?

A: 2
B: Only one
C: Not any
D: Many

A

D: Many

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4
Q

How many epithelial cells can be infected by the content of one schizont of
Eimera?

A: No any
B: Few
C: Many
D: 1

A

C: Many

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5
Q

How can we recognize chicken coccidia by species in the simplest way?

A: Based on size of oocysts
B: Based on sporulation time
C: Based on necroscopy findings D: Based on morphology of oocysts

A

C: Based on necroscopy findings

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6
Q

In order to identify the species of a sporulated oocyte, what of the following is
needed?

A: Size of oocyte
B: Size of sporocytes
C: Shape of sporocytes
D: Shape of oocyte

A

A: Size of oocyte

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7
Q

What does the unsporulated oocyst contain?

A: Sporocyst
B: Zygote
C: Embryo
D: Sporont

A

B: zygote

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8
Q

What does the sporulated oocysts contain?

A: Macrogamont
B: Zygote
C: Embryo
D: Sporocysts

A

D: sporocyst

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9
Q

Where does the sporozoite develop?

A: In the schizont
B: In the oocyst
C: In the merozoite
D: In the intestine

A

B: In the oocyst

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10
Q

Where does the sporogony of Eimera maxima take place?

A: In outer environment
B: In the lumen of intestine
C: In the epithel of jejunum
D: In the schizonts

A

A: In outer environment

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11
Q

Which animal species can be infected by Eimera acervulina?

A: Chickens
B: Chickens and pheasants
C: Gallinaceous birds D: Domestic birds

A

A: chickens

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12
Q

Where does the sporogony of Eimera acervulina take place?

A: In outer environment
B: In the lumen of intestine
C: In the epithel of duodenum
D: In the schizonts

A

A: In outer environment

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13
Q

Where do the Eimera acervulina gamonts develop?

A: Duodenum and jejunum
B: Colon
C: Caecum
D: Ileum

A

A: Duodenum and jejunum

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14
Q

What can we observe on the surface of mucosa in case of E. necatrix infection?

A: Unclotted blood
B: Necrosis
C: Pink Exudate
D: White foci

A

A: Unclotted blood

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15
Q

Where does the sporogony of Eimera brunetti takes place?

A: In outer environment
B: In the lumen of intestine
C: In epithel of duodenum
D: In the propria of duodenum

A

A: In outer environment

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16
Q

Where do the Eimera brunetti schizonts develop?

A: Jejunum
B: Lower part of intestine
C: Gizzard
D: Duodenum

A

B: Lower part of intestine

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17
Q

Where do the Eimera tenalla schizonts develop?

A: Jejunum
B: Ileium
C: Caecum
D: Duodenum

A

C: Caecum

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18
Q

Which symptom does not appear in case of renal coccidiosis?

A: Bloody faeces
B: Weakness
C: Torticolilis
D: Paralysis

A

A: Bloody faeces

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19
Q

Where is the E. truncata primarily located?

A: Renal tubules
B: Jejunum
C: Proventriculus
D: Renal glomerulus

A

A: Renal tubules

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20
Q

Eimeria labbeanna occurs in?

A: Goose small intestine
B: Goose large intestine
C: Pigeon small intestine
D: Pigeon large intestine

A

C: Pigeon small intestine

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21
Q

What does the sporulated oocyst of coccidiosis contain?

A

4 sporocysts and 2 sporozoites

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22
Q

How many epithelial cells can become infected by 1 Eimeria oocyst at the
beginning of infection?

A

8 cells (4 sporocysts with 2 sporozoites in each)

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23
Q

How many cells can be infected by the content of one Eimera oocyst?

A

8

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24
Q

How many epithelial cells can be infected by the content of one Eimera
sporocyst?

A

2

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25
How many macrogametes can develop from one macrogamont?
1
26
The correct order in the life cycle of Eimera?
Sporongy (in environment), schizogeny (in intestinal cells), gametogony (in intestinal cells), sporogony (of new oocysts in the enviroment)
27
Which species of Eimera are haemorrhagic?
E. tenella, E. necatrix and E. brunetti
28
Which species of Eimera are not haemorrhagic?
E. maxima, E. acervulina, E. mitis and E. praecox
29
Which 3 species are not characterized by blood in the intestines?
E. acervulina, E. mitis and E. praecox
30
Which method do you not use to identify the species in the chicken coccidosis?
McMaster method
31
Time lapse from infection of host to apperence of parasite sexual product in faeces is called?
Praepatent period
32
During gametogony when the merozoites develop into the female gametocytes they are called?
Macrogametocytes
33
Which animal species can be infected by Eimera maxima?
Chicken
34
What do you find on mucosa during an infection with E. maxima?
Petechiae (also on serosa)
35
Which statement is true:
E. maxima has a 30x20 μm oocyst that is characteristic
36
Size of oocyte can be used as identification for which of these species?
E. maxima or ”other” (oocysts of other species are not characteristic to identify species)
37
Which has slightly orange/salmon pink exudate in lumen?
E. maxima
38
Where does the schizogony of Eimera acervulina take place?
In epithel of duodenum and jejunum
39
Which one has discrete white foci or transverse bands which are ladder-like?
E. acervulina
40
Where do schizonts of Eimera necatrix develop?
In jejunum and ileum
41
Animals infected by E. brunetti?
Chickens
42
What is not true.
E. brunetti is found in the duodenum
43
Which animal species can be infected by Eimera tenella?
Chicken
44
Where do schizonts of E. mitis develop?
In the jejunum
45
In the goose what species of Eimeria affects the kidneys?
E. truncate
46
Which of the following is a symptom of E. truncata?
Torticollis
47
Which statement is not true for the development of Eimeria species? a) Schizogony occurs in gametogony. (It occurs in Schizogony) b) Schizogony is initiated epithelially or sub-epithelially. c) Sporulated oocysts are more resistant than unsporulated ones. d) Occurrence of meronts with few merozoites is not characteristic.
a) Schizogony occurs in gametogony. (It occurs in Schizogony)
48
Pre-disposing factors to Eimeria:
Young age, intensive (crowded, accelerated keeping), insufficient nutrition (lack of vitamins, protein in the feed), litter (deep), neglected hygienic measures, inter-current infections
49
Which Eimeria species occurs extra-intestinally?
E. ninakohyakimovae in Goats’ lymph nodes and gall bladder | E. danoilovi in Ducks. Lesions in cerebellum.
50
Difference between Isospora and Eimeria spp.?
Only Eimeria has cap, micropyle, and residual bodies.
51
How many Eimeria spp. cause haemorrhagic lesions in small intestine of chicken?
Three (E. necratrix, E. maxima, E. brunetti)
52
How many Eimeria spp. cause haemorrhagic or fibrinous lesions in the caeca?
Two (E. tenella, E. brunetti)
53
Which Eimeria in the small intestine does not cause haemorrhages?
Not E. acervulina nor E. mitis
54
What Eimeria causes haemorrhagic or fibrinous lesions in the caeca?
E. Brunetti
55
Which Eimeria spp. in chicken is highly pathogenic
E. tenella, E. necratrix
56
Which Eimeria spp. in chicken is moderately pathogenic
E. maxima
57
Which Eimeria spp. in chicken is less pathogenic
E. acervulina, E.mitis
58
Which Eimeria causes ladder-like white bands?
E. acervulina
59
Eimeria acervulina location:
Duodenum (heavier infection extending to the jejunum)
60
Which Eimeria spp. is complimentary to E. acervulina? (?)
E. mitis maybe, since both cause sub-clinical signs in chicken (less pathogenic)
61
Location of Eimeria tenella: MCQ
Caecum | Epithelial cells – Lymphocytes – Macrophages – Crypt epithelium
62
Which is the most pathogenic? E. tenella or E. acervulina?
E. tenella
63
Which is/are the most pathogenic stage(s) of E. tenella?
2nd schizont
64
Location of Eimeria maxima: MCQ
Jejunum | Occasionally in the duodenum, ileum
65
Which Eimeria sp./spp. cause(s) typically coagulation necrosis?
E.brunetti
66
Which Eimeria sp./spp. have 6-7 day pre-patent period?
E. tenella E. necatrix (5 days pre-patent period in E. brunetti, E. maxima)
67
Which is most probably not found in chicken?
E. duodenalis, E. flavescens
68
No neurological symptoms?
Eimeria of turkey Chicken, Turkey, Pigeon, Duck. Duck → Causes cerebellar lesions.
69
Which Eimeria species does not occur behind the small intestine
E. meleagridis
70
Which turkey coccidium is at most forward?
E. meleagrimitis (jejunum, duodenum, ileum)
71
The most pathogenic turkey coccidium?
E. adenoiedes E. gallopavonis E. meleagrimitis (Not pathogenic – E. meleagridis)
72
Which one is not found in turkey?
E. duodenalis (found in Pheasant)
73
What is the characteristic colour of necrotic debris during E. adenoeides coccidiosis? (?)
White
74
Which one causes catarrhal haemorrhagic inflammation in Pheasant?
E. colchici
75
Coccidiosis of Pigeon
E. labbeana | E. columbarum
76
Coccidiosis of pheasant is caused by
E. Colchici E. Phasiani E. Duodenalis
77
Where does Eimeria labbeana and E. columbarum develop?
Pigeon, middle of small intestine
78
Eimeria labbeana. In which spp. and organ?
Pigeon – Small intestine
79
Coccidiosis of goose - intestinal is caused by
E. anseris E. Nocens E. Kotlani
80
Coccidiosis of goose - renal is caused by
E. truncata
81
Goose kidney coccidium?
E.truncata
82
Eimeria kotlani is in which species?
Goose - Intestinal coccidiosis (also E. nocens, E. anseris)
83
Coccidiosis of duck species
Tyzzeria perniciosa E. danailovi E. antis (apathogenic) Wenyonella philiplevinei
84
Which coccidia has 4 sporocysts with 4 sporozoites in each?
Wenyonella philiplevinei (coccidiosis of duck)
85
How many Eimeria spp. does not cause haemorrhages in the small intestine?
One – E. anatis no haemorrhages Haemorrhages in Ducks (3) – Tyzzeria perniciosia, E. danailovi, Wenyonella philiplevinei

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