Prab: CSV import

2025-02-20T01:34:16Z

CSV import

← Older revision		Revision as of 01:34, 20 February 2025
Line 48:		Line 48:
	[[Category:Parasitic animals]]		[[Category:Parasitic animals]]
	[[Category:Veterinary parasitology]]		[[Category:Veterinary parasitology]]
			<gallery>
			File:Helicometra.jpg\|Digenea
			File:Peerj-292-fig-7 Zoogonidae.png\|Digenea
			</gallery>

Prab: CSV import

2025-02-18T17:33:53Z

CSV import

@@ Line 1: / Line 1: @@
-'''Digenea''' is a class of trematodes in the phylum Platyhelminthes, with about 6,000 species. The name "Digenea" derives from the Greek "dis", meaning "double", and "genes", meaning "born". It refers to the two-host life cycle of the parasites, involving a definitive host and one or two intermediate hosts.
+{{Short description|A class of parasitic flatworms}}
-== Taxonomy ==
+'''Digenea''' is a subclass of [[Trematoda]], commonly known as flukes, which are parasitic flatworms. These organisms are of significant medical and veterinary importance due to their role as parasites in humans and other animals. Digeneans have complex life cycles involving multiple hosts, typically including a mollusk as the first intermediate host and a vertebrate as the definitive host.
-== Life Cycle ==
+==Morphology==
-The life cycle of a typical digenean begins with the release of eggs from the definitive host into the environment. The eggs hatch in water to release a free-swimming larva, the miracidium, which infects the first intermediate host, typically a snail. Inside the snail, the miracidium transforms into a sporocyst or redia, in which further asexual reproduction occurs, producing either more rediae or cercariae. The cercariae are released from the snail and encyst as metacercariae in the second intermediate host or in the environment. The definitive host is infected by eating the second intermediate host or the encysted metacercariae.
+Digeneans are characterized by their flattened, leaf-like bodies. They possess two suckers: an oral sucker surrounding the mouth and a ventral sucker, or acetabulum, used for attachment to the host. The body is covered by a tegument, which is a specialized outer layer that protects the parasite from the host's immune system.
-== Morphology ==
+==Life Cycle==
-Digeneans are flattened and leaf-like or cylindrical. The anterior end is a holdfast organ, the oral sucker, surrounding the mouth. The posterior end may have a second holdfast, the ventral sucker or acetabulum. The skin is covered with tiny spines, which may be scale-like and overlapping, or rod-like or conical.
+The life cycle of digeneans is complex and involves several stages:
-== Pathology ==
+# '''Eggs''': The life cycle begins with eggs being released into the environment, often through the feces of the definitive host.
-Digenean infections, known as digenean trematode infections, can cause a variety of diseases in humans and other animals, including [[schistosomiasis]], [[fascioliasis]], [[clonorchiasis]], [[opisthorchiasis]], and [[paragonimiasis]].
+# '''Miracidium''': The eggs hatch into free-swimming larvae called miracidia, which must find and penetrate a suitable molluscan host.
-== See Also ==
+==Pathogenicity==
 * [[Trematoda]]
 * [[Parasitology]]
-* [[Helminthiasis]]
+* [[Schistosomiasis]]
 [[Category:Parasitic animals]]
-[[Category:Platyhelminthes]]
+[[Category:Veterinary parasitology]]

Prab: CSV import

2025-02-17T01:58:48Z

CSV import

← Older revision		Revision as of 01:58, 17 February 2025
Line 26:		Line 26:

	{{stub}}		{{stub}}

			== Gallery of Digenea ==
			<gallery>
			File:Digenea Helicometra.jpg
			File:Peerj-292-fig-7_Zoogonidae.png
			</gallery>

Prab: CSV import

2024-02-22T16:42:48Z

CSV import

New page

'''Digenea''' is a class of trematodes in the phylum Platyhelminthes, with about 6,000 species. The name "Digenea" derives from the Greek "dis", meaning "double", and "genes", meaning "born". It refers to the two-host life cycle of the parasites, involving a definitive host and one or two intermediate hosts.

== Taxonomy ==
The Digenea are one of the three major groups of parasitic platyhelminths, the others being the [[Monogenea]] and [[Cestoda]]. The Digenea are endoparasites in the digestive tract, respiratory tract, circulatory system, or other organs of vertebrates, including humans and other mammals, birds, and fish.

== Life Cycle ==
The life cycle of a typical digenean begins with the release of eggs from the definitive host into the environment. The eggs hatch in water to release a free-swimming larva, the miracidium, which infects the first intermediate host, typically a snail. Inside the snail, the miracidium transforms into a sporocyst or redia, in which further asexual reproduction occurs, producing either more rediae or cercariae. The cercariae are released from the snail and encyst as metacercariae in the second intermediate host or in the environment. The definitive host is infected by eating the second intermediate host or the encysted metacercariae.

== Morphology ==
Digeneans are flattened and leaf-like or cylindrical. The anterior end is a holdfast organ, the oral sucker, surrounding the mouth. The posterior end may have a second holdfast, the ventral sucker or acetabulum. The skin is covered with tiny spines, which may be scale-like and overlapping, or rod-like or conical.

== Pathology ==
Digenean infections, known as digenean trematode infections, can cause a variety of diseases in humans and other animals, including [[schistosomiasis]], [[fascioliasis]], [[clonorchiasis]], [[opisthorchiasis]], and [[paragonimiasis]].

== See Also ==
* [[Trematoda]]
* [[Parasitology]]
* [[Helminthiasis]]

[[Category:Parasitic animals]]
[[Category:Platyhelminthes]]
[[Category:Parasites of humans]]
[[Category:Parasites of mammals]]
[[Category:Parasites of birds]]
[[Category:Parasites of fish]]

{{stub}}

Digenea - Revision history

Prab: CSV import

Prab: CSV import

Prab: CSV import

Prab: CSV import