Non-invasive detection of Orthohalarachne attenuata (Banks, 1910) and Orthohalarachne diminuata (Doetschman, 1944) (Acari: Halarachnidae) in free-ranging synanthropic South American sea lions Otaria flavescens (Shaw, 1800)

Rivera-Luna, Helena; Kniha, Edwin; Muñoz, Pamela; Painean, Javier; Balfanz, Folko; Hering-Hagenbeck, Stephan; Prosl, Heinrich; Walochnik, Julia; Taubert, Anja; Hermosilla, Carlos; Ebmer, David

doi:10.1016/j.ijppaw.2023.06.001

Cited by 1 publication

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References 43 publications

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“… attenuata (e.g. Gomez-Puerta and Gonzales-Viera 2015 ; Gastal et al 2016 ; Ebmer et al 2022 ; Rivera-Luna et al 2023 ), O. magellanica is treated as a junior synonym of O.…”

Section: Discussionmentioning

confidence: 99%

First record of Orthohalarachne attenuata in Arctocephalus australis in mainland Argentina (Parasitiformes, Mesostigmata, Dermanyssoidea, Halarachnidae) with observations on its ambulacral morphology

Porta,

Loureiro,

Castelo

2024

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Pinniped respiratory mites of the species Orthohalarachne attenuata have been recorded from various locations around the world but not from continental Argentina. In the present work, we document for the first time the presence of O. attenuata on Arctocephalus australis on the Argentine mainland. A total of 23 adult and 381 immature mites were collected from the nose and nasopharyngeal cavity during a necropsy. The mite ambulacrum is described in adults and larvae. This structure consists of a pretarsus, an extensible pulvillum, a pair of claws and paradactyli (pretarsus opercula). The ambulacral structures also have some peculiarities, such as the presence of longitudinal furrows in the claws, straight claws in legs II and III (as opposed to curved in legs I and IV), and the fin-shaped paradactyli. The morphology of the ambulacrum of this mite is interpreted as an adaptation for anchoring to different surfaces of the host, and the protective structures present in the larvae as an adaptation for the dispersal phase in the external environment.

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“… attenuata (e.g. Gomez-Puerta and Gonzales-Viera 2015 ; Gastal et al 2016 ; Ebmer et al 2022 ; Rivera-Luna et al 2023 ), O. magellanica is treated as a junior synonym of O.…”

Section: Discussionmentioning

confidence: 99%

First record of Orthohalarachne attenuata in Arctocephalus australis in mainland Argentina (Parasitiformes, Mesostigmata, Dermanyssoidea, Halarachnidae) with observations on its ambulacral morphology

Porta,

Loureiro,

Castelo

2024

View full text Add to dashboard Cite

show abstract

Non-invasive detection of Orthohalarachne attenuata (Banks, 1910) and Orthohalarachne diminuata (Doetschman, 1944) (Acari: Halarachnidae) in free-ranging synanthropic South American sea lions Otaria flavescens (Shaw, 1800)

Cited by 1 publication

References 43 publications

First record of Orthohalarachne attenuata in Arctocephalus australis in mainland Argentina (Parasitiformes, Mesostigmata, Dermanyssoidea, Halarachnidae) with observations on its ambulacral morphology

First record of Orthohalarachne attenuata in Arctocephalus australis in mainland Argentina (Parasitiformes, Mesostigmata, Dermanyssoidea, Halarachnidae) with observations on its ambulacral morphology

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