Ferruginous Pygmy-Owl (Glaucidium brasilianum) and Eastern Screech-Owl (Megascopes asio): New Hosts for Philornis mimicola (Diptera: Muscidae) and Ornithodoros concanensis (Acari: Argasidae)

Proudfoot, Glenn A.; Teel, Pete D.; Mohr, Rachel M.

doi:10.7589/0090-3558-42.4.873

Cited by 8 publications

(6 citation statements)

References 20 publications

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“…On the other hand, in two species with subcutaneous feeding habits in the angustifrons-group, a few Philornis larvae have been also observed in avian nares. Specifically, P. mimicola larvae have been found in the nares of ferruginous pygmy-owl nestlings (Glaucidium brasilianum) Gmelin (Strigiformes: Strigidae), but most larvae occurred subcutaneously [40]. Larvae of P. porteri (Dodge) have been found in the nares and ear canals of some nestlings [41,42], and 3rd instar larvae observed to feed externally on the abdomen and wings of their hosts [41,43].…”

Section: Philornis Larval Behaviourmentioning

confidence: 99%

Taxonomic Shifts inPhilornisLarval Behaviour and Rapid Changes inPhilornis downsiDodge & Aitken (Diptera: Muscidae): An Invasive Avian Parasite on the Galápagos Islands

Common¹,

Dudaniec²,

Colombelli‐Négrel³

et al. 2020

Life Cycle and Development of Diptera

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The parasitic larvae of Philornis downsi Dodge & Aitken (Diptera: Muscidae) were first discovered in Darwin's finch nests on the Galápagos Islands in 1997. Larvae of P. downsi consume the blood and tissue of developing birds, causing high in-nest mortality in their Galápagos hosts. The fly has been spreading across the archipelago and is considered the biggest threat to the survival of Galápagos land birds. Here, we review (1) Philornis systematics and taxonomy, (2) discuss shifts in feeding habits across Philornis species comparing basal to more recently evolved groups, (3) report on differences in the ontogeny of wild and captive P. downsi larvae, (4) describe what is known about adult P. downsi behaviour, and (5) discuss changes in P. downsi behaviour since its discovery on the Galápagos Islands. From 1997 to 2010, P. downsi larvae have been rarely detected in Darwin's finch nests with eggs. Since 2012, P. downsi larvae have regularly been found in the nests of incubating Darwin's finches. Exploring P. downsi ontogeny and behaviour in the larger context of taxonomic relationships provides clues about the breadth of behavioural flexibility that may facilitate successful colonisation.

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Section: Philornis Larval Behaviourmentioning

confidence: 99%

Taxonomic Shifts inPhilornisLarval Behaviour and Rapid Changes inPhilornis downsiDodge & Aitken (Diptera: Muscidae): An Invasive Avian Parasite on the Galápagos Islands

Common¹,

Dudaniec²,

Colombelli‐Négrel³

et al. 2020

Life Cycle and Development of Diptera

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“…The term myiasis was first proposed by Hope in 1840 to refer to diseases of humans originating specifically with dipterous larvae (Kirby and Spence 1815). Myiasis in birds has been reported in geese due to the gold fly species L. sericata and L. cuprina (Rauchbach and Hadani 1972), in duck due to Sarcophagidae (Wobeser et al 1981), in turkey by cutaneous myiasis by L. sericata and L. cuprina (Al-Khalidi and Shareef 1985), in finch by Muscidae (Fessl 2006), in hawk by Protocalliphora (Tirrell 1978), in nestling birds by Protocalliphora braueri larvae (Eastman et al 1989), and in owls by Muscidae and Protocalliphora avium (Proudfoot 2006; Tirrell 1978). Data obtained from this study indicate that infestation by L. sericata and L. cuprina (Diptera: Calliphoridae) may be a rare event in the Eurasian eagle owl ( Bubo bubo ) in Iran as this is the first time it has been reported.…”

Section: Resultsmentioning

confidence: 99%

Infestation of an owl (Bubo bubo) with Lucilia spp.

2009

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Myiasis is an infestation of tissue with the larval stage of dipterous flies. This condition mostly affects the skin but may also occur in certain body cavities. It can occur in either animals or humans and is caused by parasitic dipterous fly larvae feeding on the host's necrotic or living tissue. This disease rarely effects birds especially owls. In this study, infestation of an owl with cutaneous myiasis is reported. In October 2008, a wounded owl was referred by the environmental department of Chaharmahal–Bakhtiary province to the clinic of veterinary science at Shahrekord University in west central Iran. At the initial examination, clinical signs were extensive with a wound under the right wing. The wound was infested with 40 white conical maggots, 3–9 mm in length, which led to a diagnosis of myiasis in the owl. The maggots were carefully collected from the wound using sterile forceps and were kept in 70% ethanol and transferred to the laboratory of parasitology where the diagnosis was undertaken by the observation of posterior and anterior spiracle and cephalopharyngeal apparatus. According to key diagnostic features for maggots in birds, the larvae were identified as Lucilia sericata and Lucilia cuprina (Diptera: Calliphoridae). The wound was treated using usual acaricides, but due to the severity of the infestation and because of the delay in referring the animal to the clinic, it died 3 days post-treatment. This is the first report in Iran of an infestation of the Eurasian eagle owl (Bubo bubo) with L. sericata and L. cuprina (Diptera: Calliphoridae).

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“…The louse fly I. americana is the most common Hippoboscidae in Strigidae (Maa, 1969). This hematophagous louse fly can affect health condition of birds (Wood, 2010), is a vector of Western Nile virus (WNV) in raptors of North America (Farajollahi et al, 2005;Philips, 2007), and has been also recognized as a threat for nestlings due to their role as a vector of diseases (Proudfoot et al, 2006). The louse fly had the highest prevalence in Great Horned Owl nestlings in this study, so it is important to determine the potential effects of louse fly in this owl species.…”

Section: Discussionmentioning

confidence: 99%

Ectoparasites associated with a Great Horned Owl nesting population in fragmented landscape of Baja California peninsula, México

Bolaños-García

Rodríguez‐Estrella

Guzmán-Cornejo

2018

AZM

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Ectoparasites are important in avian host population because they can affect health condition, regulate population dynamics and alter interspecific competition. Studies of ectoparasites in wild raptors are scarce and even few have been made in owls. This is the first study of the prevalence and intensity of ectoparasites in Great Horned Owl (Bubo virginianus) fledglings. We studied ectoparasites on fledglings from nests in a fragmented arid landscape at Baja California peninsula, during the breeding seasons of 2015 and 2017. The fledglings of 40 days of age were handled and taken from their nests for the collection of ectoparasites. A total of 81 epizoic species were collected from 36 nestlings from 15 nests, distributed in five orders: Diptera (Icosta americana); Hemiptera (Cimicidae gen. sp.); Phthiraptera (Neohaematopinus sciurinus, Colpocephalum pectinatum); Siphonaptera (Orchopea sp.) and Mesostigmata (Ornihtonysus sylviarum). Likewise, one species of chewing lice (n=5) (Geomydoecus telli) and one species of feather mite (n=7) were also recorded associated with the Great Horned Owl. Five species were hematophagous parasites. Louse fly I. americana and chewing louse C. pectinatum showed the highest levels of prevalence (26.5% and 20.6% respectively), while the hematophagous feather mite Ornihtonysus silviarum presented the higher mean intensity in only one nest (15.5). The flea Orchopea sp. and the chewing louse G. telli and sucking louse N. sciurinus exhibited the lowest values of prevalence and mean intensity; these species have been recorded in association mainly with rodents, so probably they could have been transmitted to the owls when they were captured as preys and taken into their nest. Additionally a bug (Cimicidae gen. sp.) was found in one host. Colpocephalum pectinatum is the first recorded from Great Horned owl, such as new host. The abundance of ectoparasites in one owl nest was independent of their abundance in neighbor nests (Moran´s I = 0.010; z = 0.16, P > 0.05). We discuss the implications of ectoparasitism for a Great Horned owl population in fragmented habitat of the Baja California arid desert.

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Ferruginous Pygmy-Owl (Glaucidium brasilianum) and Eastern Screech-Owl (Megascopes asio): New Hosts for Philornis mimicola (Diptera: Muscidae) and Ornithodoros concanensis (Acari: Argasidae)

Cited by 8 publications

References 20 publications

Taxonomic Shifts inPhilornisLarval Behaviour and Rapid Changes inPhilornis downsiDodge & Aitken (Diptera: Muscidae): An Invasive Avian Parasite on the Galápagos Islands

Taxonomic Shifts inPhilornisLarval Behaviour and Rapid Changes inPhilornis downsiDodge & Aitken (Diptera: Muscidae): An Invasive Avian Parasite on the Galápagos Islands

Infestation of an owl (Bubo bubo) with Lucilia spp.

Ectoparasites associated with a Great Horned Owl nesting population in fragmented landscape of Baja California peninsula, México

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