Dermatobiosis in Panthera onca: first description and multinomial logistic regression to estimate and predict parasitism in captured wild animals

Abstract

Dermatobia hominis is a parasite widely distributed in neotropical regions. The parasitic phase of the cycle is characterized by the formation of a subcutaneous nodule in the host, which can promote infestation by other dipterans and skin infections. The aim of this report is to register parasitism by D. hominis in free-ranging Panthera onca captured in the Brazilian wetland and to determine significant biological and meteorological factors that are likely to influence the presence of larval parasitism in captured wild jaguars. Between 2011 to 2020, 34 jaguars were captured and examined manually by searching for lesions characteristic of myiasis. By manual compression in the subcutaneous nodules, larvae morphologically identified as D. hominis (first and third instars) were collected from 13 jaguars. A multinomial logistic regression showed that adult jaguars had 16.49-fold higher odds of being parasitized than subadults. Thus, jaguars captured in the season of July–September have 34.01- and 11.42-fold higher odds of being parasitized compared to the seasons of October–December and April–June, respectively, which is associated with high total monthly precipitation in the previous season. The present study is the first to describe parasitism by D. hominis larvae in jaguars.

Furuncular myiasis caused by Dermatobia hominis in a domestic cat case report

“…The literature consulted contains reports of furuncular myiasis in several species such as cattle ( Fernandes et al, 2008 ; Oliveira-Sequeira et al, 1996 ), dogs ( Deak et al, 2020 ; Ribeiro et al, 2001 ), wild animals ( May-Junior et al, 2021 ; Soares et al, 2021 ; Verocai et al, 2009 ) and even in humans ( Freitas et al, 2018 ; Pinos et al, 2014 ). The present study shows dermatobiosis in a domestic cat, only reported before in Brazil and Venezuela ( Campos et al, 2021 ; Marcial et al, 2003 ; Verocai et al, 2010 ).…”

Unveiling demographic and mating strategies ofPanthera oncain the Pantanal, Brazil

“…Captures were performed through the use of Aldridge spring-activated foot snares ( de la Torre et al 2017b ) set on known trails used more frequently for the target individuals or around carcasses, usually cattle (killed or just consumed opportunistically by jaguars). Jaguars were anesthetized with a combination of tiletamine–zolazepam intramuscularly by CO 2 rifle dart ( Onuma et al 2015 ; May-Junior et al 2021 ). Capture procedures were approved by National Research Center for Carnivores Conservation——ICMBio/CENAP under license numbers No.…”

Review on ecological interactions of the Cochliomyia hominivorax fly and assessment of the possible impacts of its eradication in Uruguay

“…Myiasis is more frequently described among wild hosts in zoos, and even today, there are few reports in wild animals (13) . Some of the wild animals in which myiasis has been recorded are the Texas opossum (Didelphis virginiana texensis [Didelphimorphia: Didelphidae]) (14) , the water buffalo (Bubalus bubalis [Artiodactyla: Bovidae]) (15) , the white-tailed deer (Odocoileus virginianus [Artiodactyla: Cervidae]) (14) (16) , the key pygmy deer (O. virginianus clavium) (17) , the pampas deer (Ozotoceros bezoarticus [Artiodactyla: Cervidae]) (18) , the fallow deer (Dama dama [Artiodactyla: Cervidae]) (17) , the wild boar (Sus scrofa [Artiodactyla: Suidae]) (19)(20)(21) , the capybara (Hydrochoerus hydrochaeris [Rodentia: Caviidae]) (22) , the maned wolf (Chrysocyon brachyurus [Carnivora: Canidae]) (13) , the ocelot (Leopardus pardalis [Carnivora: Felidae]) (23) , the jaguar (Panthera onca [Carnivora: Felidae]) (24) , the lesser grison (Galictis cuja [Carnivora: Mustelidae]) (25) , and the rhea (Rhea americana [Struthioniformes: Rheidae]) (18) . Also, C. hominivorax parasites have been described, such as the Trichotrombidium muscarum mite (Acari: Prostigmata), mainly affecting adults (26) .…”