Difference between revisions of "Parafilaria spp."

Revision as of 22:39, 26 April 2010

PARAFILARIA SPECIES

General

Filarial nematode (<6cm long).
Subcutaneous nodules and intermuscular connective tissue.
Found in warmer countries (Asia, Africa, Europe, South America; UK in imported horses only).

Life-Cycle

Indirect LC, horn fly (Haematobia) intermediate host.
Female worms perforate nodules and lay eggs on skin surface; hatch to L1.
Fly ingests L1 during feeding, develops to L3 inside fly.
New host infected when fly feeds on skin wound, L3 enters and matures to adult worm.
Prepatent period = 8-10months.

Pathogenicity

Female worm punctures skin to lay eggs - bleeding points ("sweating blood"); most active in warm weather after horse exercised.
Lesions only temporary, though reappear the following spring (worms live several years).

@@ Line 1: / Line 1: @@
-{{OpenPagesTop}}
+{{unfinished}}
-{{Taxobox
+=== ''PARAFILARIA'' SPECIES ===
-|name               = Parafilaria spp.
+==== General ====
-|kingdom            =
+*Filarial nematode (<6cm long).
-|phylum             =
+*Subcutaneous nodules and intermuscular connective tissue.
-|class              = [[Nematodes|Nematoda]]
+*Found in warmer countries (Asia, Africa, Europe, South America; UK in imported horses only).
-|sub-class          =
-|order              =
-|super-family       = [[Filarioidea]]
-|family             =
-|sub-family         =
-|genus              =
-|species            =
-}}
-==''P. bovicola''==
-Also known as: '''''Summer bleeding disease — Verminous nodules
+==== Life-Cycle ====
+*Indirect LC, horn fly (''Haematobia'') intermediate host.
+*Female worms perforate nodules and lay eggs on skin surface; hatch to L1.
+*Fly ingests L1 during feeding, develops to L3 inside fly.
+*New host infected when fly feeds on skin wound, L3 enters and matures to adult worm.
+*Prepatent period = 8-10months.
-===Hosts===
+==== Pathogenicity ====
-'''Intermediate host''': [[Musca spp.|Muscid flies]]
+*Female worm punctures skin to lay eggs - bleeding points ("sweating blood"); most active in warm weather after horse exercised.
+*Lesions only temporary, though reappear the following spring (worms live several years).
-'''Definitive host''': Cattle and buffalos
-===Identification===
-''P. bovicola'' are thin, white worms, ranging between 3-6cm in length.
-===Life Cycle===
-This parasite is of the superfamily [[Filarioidea]]. The life cycle of ''P. bovicola'' is indirect. The eggs hatch on the surface of the host. These eggs are ingested by the flies acting as intermediate hosts.  Larvae develop and transform into infective L3.  The flies then feed on the host, and the larvae are past onto the host. The larvae then enter the skin of the host, and develop into adults subcutaneously.
-The prepatent period of ''P. bovicola'' is 7-9 months.
-==''P. multipapillosa''==
-Also known as: '''''Filaria haemorrhagica
-===Hosts===
-'''Intermediate hosts''': [[Horn fly|Horn flies]]
-'''Definitive host''': Horses and donkeys
-===Identification===
-''P. multipapillosa'' are slender white worms, measuring 3-7cm in length.
-===Life Cycle===
-The eggs or L1 are ingested by horn flies. The larvae mature into L3 several months later. Infected flies feed on the definitive host. The larvae then attach to the host, and begin to migrate under the skin of the host, where they develop into adults.
-The prepatent period is 9-12 months.
-{{Learning
-|literature search = [http://www.cabdirect.org/search.html?q=title%3A%28%22Parafilaria%22%29 ''Parafilaria'' spp. publications]
-|Vetstream = [https://www.vetstream.com/canis/search?s=nematode Nematodes]
-}}
-==References==
-Taylor, M.A, Coop, R.L., Wall,R.L. (2007) '''Veterinary Parasitology''' ''Blackwell Publishing''
-{{OpenPages}}
 [[Category:Filarioidea]]
 [[Category:Horse_Nematodes]]

Difference between revisions of "Parafilaria spp."

Revision as of 22:39, 26 April 2010

Contents

PARAFILARIA SPECIES

General

Life-Cycle

Pathogenicity

Navigation menu

Search