CHAPTER 8 : NEMATODES

Chapter 8 : Nematodes

Enterobius vermicularis - Egg

48-60 µm by 20-35 µm

Oval,one side flattened

Unembryonated or Embryonated mature

Double layered,Thick and colorless shell

Enterobius vermicularis - Egg

48-60 µm by 20-35 µm

Oval,one side flattened

Unembryonated or Embryonated mature

Double layered,Thick and colorless shell

Enterobius vermicularis - Egg

48-60 µm by 20-35 µm

Oval,one side flattened

Unembryonated or Embryonated mature

Double layered,Thick and colorless shell

Enterobius vermicularis - Egg

48-60 µm by 20-35 µm

Oval,one side flattened

Unembryonated or Embryonated mature

Double layered,Thick and colorless shell

Enterobius vermicularis - Egg

48-60 µm by 20-35 µm

Oval,one side flattened

Unembryonated or Embryonated mature

Double layered,Thick and colorless shell

Enterobius vermicularis - Egg

48-60 µm by 20-35 µm

Oval,one side flattened

Unembryonated or Embryonated mature

Double layered,Thick and colorless shell

Enterobius vermicularis - Egg

48-60 µm by 20-35 µm

Oval,one side flattened

Unembryonated or Embryonated mature

Double layered,Thick and colorless shell

Enterobius vermicularis - Adult

Female : 7-14 mm by up to 0.5 m

Male : 2-4 mm by up to 0.3 m

Both color yellowish white

Female:Pointed resembles pinhead

Enterobius vermicularis - Adult

Female : 7-14 mm by up to 0.5 m

Male : 2-4 mm by up to 0.3 m

Both color yellowish white

Female:Pointed resembles pinhead

Enterobius vermicularis - Adult

Female : 7-14 mm by up to 0.5 m

Male : 2-4 mm by up to 0.3 m

Both color yellowish white

Female:Pointed resembles pinhead

Enterobius vermicularis - Adult

Female : 7-14 mm by up to 0.5 m

Male : 2-4 mm by up to 0.3 m

Both color yellowish white

Female:Pointed resembles pinhead

Trichuris trichiura - Egg

50-55 µm by up to 25 µm

Football,Barrel;Hyaline polar plugs on each end

Unicellular and undeveloped

Smooth,Yellow brown because of bile contact

Trichuris trichiura - Egg

50-55 µm by up to 25 µm

Football,Barrel;Hyaline polar plugs on each end

Unicellular and undeveloped

Smooth,Yellow brown because of bile contact

Trichuris trichiura - Egg

50-55 µm by up to 25 µm

Football,Barrel;Hyaline polar plugs on each end

Unicellular and undeveloped

Smooth,Yellow brown because of bile contact

Trichuris trichiura - Egg

50-55 µm by up to 25 µm

Football,Barrel;Hyaline polar plugs on each end

Unicellular and undeveloped

Smooth,Yellow brown because of bile contact

Trichuris trichiura - Egg

50-55 µm by up to 25 µm

Football,Barrel;Hyaline polar plugs on each end

Unicellular and undeveloped

Smooth,Yellow brown because of bile contact

Trichuris trichiura - Egg

50-55 µm by up to 25 µm

Football,Barrel;Hyaline polar plugs on each end

Unicellular and undeveloped

Smooth,Yellow brown because of bile contact

Trichuris trichiura - Adult

2.5 - 5 cm

Males are smaller than Females

Anterior end: Whiphandle and Slender esophagus

Posterior end: Whip itself,Contains reproductive and digestive system,Male has curved tail

Trichuris trichiura - Adult

2.5 - 5 cm

Males are smaller than Females

Anterior end: Whiphandle and Slender esophagus

Posterior end: Whip itself,Contains reproductive and digestive system,Male has curved tail

Trichuris trichiura - Adult

2.5 - 5 cm

Males are smaller than Females

Anterior end: Whiphandle and Slender esophagus

Posterior end: Whip itself,Contains reproductive and digestive system,Male has curved tail

Trichuris trichiura - Adult

2.5 - 5 cm

Males are smaller than Females

Anterior end: Whiphandle and Slender esophagus

Posterior end: Whip itself,Contains reproductive and digestive system,Male has curved tail

Trichuris trichiura - Adult

2.5 - 5 cm

Males are smaller than Females

Anterior end: Whiphandle and Slender esophagus

Posterior end: Whip itself,Contains reproductive and digestive system,Male has curved tail

Trichuris trichiura - Adult

2.5 - 5 cm

Males are smaller than Females

Anterior end: Whiphandle and Slender esophagus

Posterior end: Whip itself,Contains reproductive and digestive system,Male has curved tail

Ascaris lumbricoides - egg (Unfertilized)

85-95 µm by 38-45 µm

Varies/Typical oblong

Unembryonated,Amorphous mass of protoplasm

Usually corticated

Ascaris lumbricoides - egg (Unfertilized)

85-95 µm by 38-45 µm

Varies/Typical oblong

Unembryonated,Amorphous mass of protoplasm

Usually corticated

Ascaris lumbricoides - egg (Unfertilized)

85-95 µm by 38-45 µm

Varies/Typical oblong

Unembryonated,Amorphous mass of protoplasm

Usually corticated

Ascaris lumbricoides - egg (Unfertilized)

85-95 µm by 38-45 µm

Varies/Typical oblong

Unembryonated,Amorphous mass of protoplasm

Usually corticated

Ascaris lumbricoides - egg (Unfertilized)

85-95 µm by 38-45 µm

Varies/Typical oblong

Unembryonated,Amorphous mass of protoplasm

Usually corticated

Ascaris lumbricoides - egg (Unfertilized)

85-95 µm by 38-45 µm

Varies/Typical oblong

Unembryonated,Amorphous mass of protoplasm

Usually corticated

Ascaris lumbricoides - egg (Unfertilized)

85-95 µm by 38-45 µm

Varies/Typical oblong

Unembryonated,Amorphous mass of protoplasm

Usually corticated

Ascaris lumbricoides - egg (Unfertilized)

85-95 µm by 38-45 µm

Varies/Typical oblong

Unembryonated,Amorphous mass of protoplasm

Usually corticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg of Ascaris lumbricoides

Unicellular and undeveloped embryo

Thick chitin shell (Nitrogen containing polysaccharide coating)

Corticated or decorticated

Ascaris lumbricoides - Adult

Female: 22-35cm ,Creamy white pink tint visible in cuticle and Pencil lead thickness

Male: up to 30cm ,Creamy white pink tint visible in cuticle and Prominent incurved tail

Ascaris lumbricoides - Adult

Female: 22-35cm ,Creamy white pink tint visible in cuticle and Pencil lead thickness

Male: up to 30cm ,Creamy white pink tint visible in cuticle and Prominent incurved tail

Ascaris lumbricoides - Adult

Female: 22-35cm ,Creamy white pink tint visible in cuticle and Pencil lead thickness

Male: up to 30cm ,Creamy white pink tint visible in cuticle and Prominent incurved tail

Ascaris lumbricoides - egg (Unfertilized)

85-95 µm by 38-45 µm

Varies/Typical oblong

Unembryonated,Amorphous mass of protoplasm

Usually corticated

Ascaris lumbricoides -egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg

Unicellular and undeveloped embryo

Thick chitin

Corticated or decorticated

Ascaris lumbricoides - egg (Fertilized)

40-75 µm by 30-50 µm

Rounder than unfertilized egg

Unicellular and undeveloped embryo

Thick chitin

Corticated or decorticated

Ascaris lumbricoides - adult

Female: 22-35cm ,Creamy white pink tint visible in cuticle and Pencil lead thickness

Male: up to 30cm ,Creamy white pink tint visible in cuticle and Prominent incurved tail

Ascaris lumbricoides - Adult

Female: 22-35cm ,Creamy white pink tint visible in cuticle and Pencil lead thickness

Male: up to 30cm ,Creamy white pink tint visible in cuticle and Prominent incurved tail

Ascaris lumbricoides - Adult

Female: 22-35cm ,Creamy white pink tint visible in cuticle and Pencil lead thickness

Male: up to 30cm ,Creamy white pink tint visible in cuticle and Prominent incurved tail

Ascaris lumbricoides - Adult

Female: 22-35cm ,Creamy white pink tint visible in cuticle and Pencil lead thickness

Male: up to 30cm ,Creamy white pink tint visible in cuticle and Prominent incurved tail

Hookworm - Egg

Necator americanus : 60-75 by 35-40

Ancylostoma duodenale : 55-60 by 35-40

Their embryo has 2,4 or 8 cell stage

Thin,colorless and smooth shell

Hookworm - Egg

Necator americanus : 60-75 by 35-40

Ancylostoma duodenale : 55-60 by 35-40

Their embryo has 2,4 or 8 cell stage

Thin,colorless and smooth shell

Hookworm - Egg

Necator americanus : 60-75 by 35-40

Ancylostoma duodenale : 55-60 by 35-40

Their embryo has 2,4 or 8 cell stage

Thin,colorless and smooth shell

Hookworm - Egg

Necator americanus : 60-75 by 35-40

Ancylostoma duodenale : 55-60 by 35-40

Their embryo has 2,4 or 8 cell stage

Thin,colorless and smooth shell

Hookworm - Egg

Necator americanus : 60-75 by 35-40

Ancylostoma duodenale : 55-60 by 35-40

Their embryo has 2,4 or 8 cell stage

Thin,colorless and smooth shell

Hookworm - Egg

Necator americanus : 60-75 by 35-40

Ancylostoma duodenale : 55-60 by 35-40

Their embryo has 2,4 or 8 cell stage

Thin,colorless and smooth shell

Hookworm - Egg

Necator americanus : 60-75 by 35-40

Ancylostoma duodenale : 55-60 by 35-40

Their embryo has 2,4 or 8 cell stage

Thin,colorless and smooth shell

Hookworm - Egg

Necator americanus : 60-75 by 35-40

Ancylostoma duodenale : 55-60 by 35-40

Their embryo has 2,4 or 8 cell stage

Thin,colorless and smooth shell

Hookworm - Egg

Necator americanus : 60-75 by 35-40

Ancylostoma duodenale : 55-60 by 35-40

Their embryo has 2,4 or 8 cell stage

Thin,colorless and smooth shell

Ascaris lumbricoides - Adult

Female: 22-35cm ,Creamy white pink tint visible in cuticle and Pencil lead thickness

Male: up to 30cm ,Creamy white pink tint visible in cuticle and Prominent incurved tail

lo

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Hookworm - Adult

Female : 9 - 12 mm by 0.25 - 0.5 mm

Male : 5 - 10 mm by 0.2 - 0.4 mm and has prominent posteriors copulatory bursa

Thick cuticle,Conspicious bend hook,Grayish White to Pink,

Strongyloides stercoralis - Egg

48 by 35

Contains well developed larvae

2,4 or 8 cell stage embryo

Thin hyaline shell

Strongyloides stercoralis - Egg

48 by 35

Contains well developed larvae

2,4 or 8 cell stage embryo

Thin hyaline shell

Strongyloides stercoralis - Egg

48 by 35

Contains well developed larvae

2,4 or 8 cell stage embryo

Thin hyaline shell

Strongyloides stercoralis - Egg

48 by 35

Contains well developed larvae

2,4 or 8 cell stage embryo

Thin hyaline shell

Strongyloides stercoralis - Egg

48 by 35

Contains well developed larvae

2,4 or 8 cell stage embryo

Thin hyaline shell

Strongyloides stercoralis - Egg

48 by 35

Contains well developed larvae

2,4 or 8 cell stage embryo

Thin hyaline shell

Strongyloides stercoralis - Egg

48 by 35

Contains well developed larvae

2,4 or 8 cell stage embryo

Thin hyaline shell

Strongyloides stercoralis - Egg

48 by 35

Contains well developed larvae

2,4 or 8 cell stage embryo

Thin hyaline shell

Strongyloides stercoralis - Adult

2 by 0.4mm

Colorless transport body

Short buccal cavity

Long and slender esophagus

Striated cuticle

Strongyloides stercoralis - Adult

2 by 0.4mm

Colorless transport body

Short buccal cavity

Long and slender esophagus

Striated cuticle

Strongyloides stercoralis - Adult

2 by 0.4mm

Colorless transport body

Short buccal cavity

Long and slender esophagus

Striated cuticle

Strongyloides stercoralis - Adult

2 by 0.4mm

Colorless transport body

Short buccal cavity

Long and slender esophagus

Striated cuticle

Strongyloides stercoralis - Adult

2 by 0.4mm

Colorless transport body

Short buccal cavity

Long and slender esophagus

Striated cuticle

Strongyloides stercoralis - Adult

2 by 0.4mm

Colorless transport body

Short buccal cavity

Long and slender esophagus

Striated cuticle

Strongyloides stercoralis - Adult

2 by 0.4mm

Colorless transport body

Short buccal cavity

Long and slender esophagus

Striated cuticle

Capillaria philipinensis - Egg

Oviparous

Aphasmidea

Small intestine

Pudoc worm

Diganostic stage unembronated ova

MOT: Ingestion of Infective larva from fish

36-45 by 20 Peanut shape w/ flattened bipolar plugs and striated shell

can cause capillariasis or mystery disease = Borborygmous diarrhea

Capillaria philipinensis - Egg

Oviparous

Aphasmidea

Small intestine

Pudoc worm

Diganostic stage unembronated ova

MOT: Ingestion of Infective larva from fish

36-45 by 20 Peanut shape w/ flattened bipolar plugs and striated shell

can cause capillariasis or mystery disease = Borborygmous diarrhea

Capillaria philipinensis - Egg

Oviparous

Aphasmidea

Small intestine

Pudoc worm

Diganostic stage unembronated ova

MOT: Ingestion of Infective larva from fish

36-45 by 20 Peanut shape w/ flattened bipolar plugs and striated shell

can cause capillariasis or mystery disease = Borborygmous diarrhea

Capillaria philipinensis - Egg

Oviparous

Aphasmidea

Small intestine

Pudoc worm

Diganostic stage unembronated ova

MOT: Ingestion of Infective larva from fish

36-45 by 20 Peanut shape w/ flattened bipolar plugs and striated shell

can cause capillariasis or mystery disease = Borborygmous diarrhea

Capillaria philipinensis - Egg

Oviparous

Aphasmidea

Small intestine

Pudoc worm

Diganostic stage unembronated ova

MOT: Ingestion of Infective larva from fish

36-45 by 20 Peanut shape w/ flattened bipolar plugs and striated shell

can cause capillariasis or mystery disease = Borborygmous diarrhea

Capillaria philipinensis - Egg

Oviparous

Aphasmidea

Small intestine

Pudoc worm

Diganostic stage unembronated ova

MOT: Ingestion of Infective larva from fish

36-45 by 20 Peanut shape w/ flattened bipolar plugs and striated shell

can cause capillariasis or mystery disease = Borborygmous diarrhea

Capillaria philipinensis - Egg

Oviparous

Aphasmidea

Small intestine

Pudoc worm

Diganostic stage unembronated ova

MOT: Ingestion of Infective larva from fish

36-45 by 20 Peanut shape w/ flattened bipolar plugs and striated shell

can cause capillariasis or mystery disease = Borborygmous diarrhea

Capillaria philipinensis - Adult

Thin filamentous anterior end and a slightly thicker posterior end

Male has long copulatory spicule and unspined sheath

Capillaria philipinensis - Adult

Thin filamentous anterior end and a slightly thicker posterior end

Male has long copulatory spicule and unspined sheath