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{| cellpadding="10" cellspacing="0" border="1"

|name              = Oestrus ovis

|kingdom            = Animalia

|phylum            = [[:Category:Arthropods|Arthropoda]]

|class              = [[Insecta]]

|sub-class          =

 

|order              = Diptera

|super-family      =

 

|family            = [[Oestridae]]

{| cellpadding="10" cellspacing="0" border="1" 

|sub-family        =

|genus              =

| Animalia

|species            =

|-

}}

| Phylum

| Arthropoda

|-

| Class

|-

| Order

|-

| Family

| Oestridae

|}

==Hosts==

==Hosts==

''Oestrus ovis'' is primarily seen on sheep and goats, but occasionally seen in ibex, camels and humans.

''Oestrus ovis'' is of the family [[Oestridae]], and is primarily seen in sheep and goats, but occasionally seen in ibex, camels and humans.

==Identification==

==Identification==

The adult fly is 13-15mm in length and grey in colour, with black spots along the abdomen.

The adult fly is 13-15mm in length and grey in colour, with black spots along the abdomen.

Mature larvae are around 30mm and are yellow in colour. They have distinct black bands along the dorsal body segement.

Mature larvae are around 30mm and are yellow in colour. They have distinct black bands along the dorsal body segment.

==Life cycle==

==Life cycle==

The female is viviparous and infects the host by squirting larvae into the nostrils of sheep in a jet of liquid.

The female is viviparous and infects the host by squirting larvae into the nostrils of sheep in a jet of liquid.

The larvae crawl caudally into the nasal cavity and feed on the nasal mucosa and mature, before returning to the nostrils. The larve move to the frontal sinuses, where they transform from L2 to L3.  They only move to the frontal sinuses under warm conditions.  If these conditions are not achieved, the larvae will stay in the nostrils for an extended period of time, until the warm conditions come about.

The larvae crawl caudally into the nasal cavity and feed on the nasal mucosa and mature, before returning to the nostrils. The larvae move to the frontal sinuses, where they transform from L2 to L3.  They only move to the frontal sinuses under warm conditions.  If these conditions are not achieved, the larvae will stay in the nostrils for an extended period of time, until the warm conditions come about.

The larvae are then sneezed out into the ground, and pupate on the ground.  The adults develop, and are active throughout the year.  Adult flies only live for 2-3 weeks

The larvae are then sneezed out into the ground, and pupate on the ground.  The adults develop, and are active throughout the year.  Adult flies only live for 2-3 weeks

 

|videos = [[Oestrus ovis in the head of a sheep video|''Oestrus ovis'' in the head of a sheep video]]

|literature search = [http://www.cabdirect.org/search.html?q=title%3A%28%22Oestrus+ovis%22%29 ''Oestrus ovis'' publications]

|Vetstream = [https://www.vetstream.com/canis/Content/Disease/dis60301.asp Myiasis]

 

**Heavy infestations lead to erosion of the bones in the sinuses (turbinate bones)

**Penetration of the brain leads to '''false gid''' (high stepping gait and incoordination)

 

*[[Respiratory Parasitic Infections - Pathology#Oestrus ovis|Pathology in the nasal cavity]]

 

 

'''Control'''

*Systemic [[Ectoparasiticides|insecticides]] can be used in heavy infestations

 

[[Category:Oestridae]]

[[Category:Oestridae]]

[[Category:To_Do_-_Max]]

[[Category:Expert_Review - Parasites]]

[[Category:Respiratory Parasitic Infections]][[Category:Sheep]]

[[Category:Respiratory Parasitic Infections]][[Category:Sheep Parasites]][[Category:Goat Parasites]]