Pseudolynchia canariensis

(Macquart, 1839)

pigeon louse fly, pigeon fly

Pseudolynchia canariensis is an obligate ectoparasitic in the that specializes on pigeons and doves (Columbidae). It is a significant of Haemoproteus columbae, the causative agent of pigeon , serving as the definitive where of the occurs. The exhibits , producing one at a time that is deposited in the host's nest or roosting site. Both sexes feed exclusively on blood. The has been documented in numerous regions worldwide, particularly where domestic pigeons are kept, and shows limited ability to survive on human blood.

Pseudolynchia canariensis by (c) Roman, some rights reserved (CC BY), uploaded by Roman. Used under a CC-BY license.

Pseudolynchia canariensis by no rights reserved, uploaded by Marino Linić. Used under a CC0 license.

Pronunciation

How to pronounce Pseudolynchia canariensis: //ˌsjʊːdəˈlɪnkiə ˌkænəˈriːɛnsiːs//

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Identification

Dorsoventrally flattened body adapted for moving between feathers; this flattened shape distinguishes from most other . are winged and capable of , unlike some flightless hippoboscid . Tough makes the to crushing. Specific identification requires examination of morphological characters typical of the Pseudolynchia.

Images

Habitat

Found in close association with birds, particularly in nests and roosting sites where are deposited. Occurs in domestic, , and wild pigeon across varied environments including urban areas, agricultural settings, and natural where columbiform birds are present.

Distribution

Documented from continental Africa, the Mediterranean region, Afghanistan, India, Bangladesh, Nepal, Thailand, Taiwan, Ryukyu Islands, Philippines, Malaya, Indonesia, North America (warmer latitudes), South America (warmer latitudes), Brazil (multiple states), Norway, Madeira Island (Portugal), and Hawaii. Distribution closely follows that of domestic pigeon keeping and Columba livia .

Diet

Both sexes feed exclusively on blood of columbiform birds.

Host Associations

Columbidae (pigeons and doves) - obligate Only wild ; includes both and domestic of multiple . In laboratory conditions has been recorded from 33 genera, 13 , and 8 of birds, though range is more restricted.
Haemoproteus columbae - (definitive ) of the protozoan occurs in the ; transmitted to columbiform . Can be fatal to young rock pigeons in heavily infected birds, though often benign.
"Candidatus" Arsenophonus arthropodicus - (intracellular secondary endosymbiont)Bacterial endosymbiont isolated and cultured from this .
Myialges anchora - (hyperparasitic ) commonly infest pigeon .
Ischnoceran lice - phoretic use the for transport between bird ; do not feed on the fly.

Life Cycle

: female produces one offspring at a time. A single hatches in the female's uterus; develops internally, feeding from , and is retained until fully grown. Female a (late-stage larva enclosed in a shell that hardens into a true ) in the 's nest or roosting site. At 30°C, are produced at regular 24-hour intervals, averaging 8.8 puparia per female. Optimum temperature for colony maintenance is 26.6–30.0°C; temperatures of 13°C and 37°C are lethal to pupae. Puparial deposition and occur only during . Humidity does not markedly affect pupal development.

Behavior

Strongly -specific in natural settings despite laboratory observations suggesting broader host suitability. When dislodged from host, quickly returns to same or nearest host individual. Rarely spends time off host except during . Both sexes blood-feed, unlike many dipteran where only females feed on blood.

Ecological Role

for Haemoproteus columbae, contributing to transmission dynamics in columbiform . Serves as phoretic transport for between bird . Hosts hyperparasitic and bacterial endosymbionts, contributing to micro- complexity.

Human Relevance

Significant pest of domestic pigeons and doves. Bites humans when no alternative is available, causing itchy reactions, but cannot survive or reproduce on human blood alone. Of concern in pigeon keeping and racing industries due to transmission. Experimental studies in 1931 demonstrated inability to establish on human hosts.

Similar Taxa

Crataerina pallidaAnother , but flightless and specialized on (Apodidae); P. canariensis retains capability and specializes on Columbidae.
Olfersia spinifera parasitizing frigate birds; demonstrates similar for but on different group.
Sheep keds (Melophagus ovinus) parasitizing mammals rather than birds; -level similarity in flattened body form and but different .