Distribution patterns of ectoparasites of Glossy Ibis (<i>Plegadis falcinellus</i>) chicks

Touati, Laïd; Figuerola, Jordi; Alfarhan, Ahmed H.; Samraoui, Boudjéma

doi:10.1080/21658005.2015.1005447

Cited by 7 publications

(5 citation statements)

References 66 publications

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“…Some hosts may harbor a large number of mites, forming a clump of mites on their body surface, while some other hosts may have no or very few mites on their body surface. The aggregated distribution pattern of O. bacoti in the present study is consistent with that of some other ectoparasites, such as chigger mites; this is a common phenomenon in many parasites [ 38 , 52 , 71 ]. The aggregated distribution may be beneficial to the survival, mating and defense of the parasites [ 4 , 38 , 72 , 73 ].…”

Section: Discussionsupporting

confidence: 89%

“…The measurement of spatial distribution pattern of a certain population is one of important issues in arthropod ecology [ 69 , 70 ]. There are usually three types of spatial distribution patterns: uniform (or even) distribution, random distribution and aggregated distribution [ 52 , 71 , 72 , 73 ]. There are a variety of statistical methods to measure the spatial distribution pattern of a certain population, and the patchiness index and Taylor’s power law are two of them [ 43 , 44 , 74 ].…”

Section: Discussionmentioning

confidence: 99%

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Distribution and Host Selection of Tropical Rat Mite, Ornithonyssus bacoti, in Yunnan Province of Southwest China

Yin

Guo

Jin

et al. 2021

Animals

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(1) Background: As a species of gamasid mite, the tropical rat mite (Ornithonyssus bacoti) is a common ectoparasite on rodents and some other small mammals. Besides stinging humans to cause dermatitis, O. bacoti can be a vector of rickettsia pox and a potential vector of hemorrhagic fever with renal syndrome (HFRS). (2) Objective: The present study was conducted to understand the host selection of O. bacoti on different animal hosts and the distribution in different environmental gradients in Yunnan Province of Southwest China. (3) Methods: The original data came from the investigations in 39 counties of Yunnan, between 1990 and 2015. The animal hosts, rodents and some other small mammals were mainly trapped with mouse traps. The O. bacoti mites on the body surface of animal hosts were collected and identified in a conventional way. The constituent ratio (Cr), prevalence (PM), mean abundance (MA) and mean intensity (MI) were used to reflect infestations of animal hosts with O. bacoti mites. The patchiness index and Taylor’s power law were used to measure the spatial distribution pattern of O. bacoti mites on their hosts. (4) Results: A total of 4121 tropical rat mites (O. bacoti) were identified from 15 species and 14,739 individuals of hosts, and 99.20% of them were found on rodents. More than half of O. bacoti mites (51.78%) were identified from the Asian house rat (Rattus tanezumi), and 40.09% of the mites from the Norway rat (R. norvegicus) (p < 0.05). The infestations of R. tanezumi (PM = 7.61%, MA = 0.40 and MI = 5.31) and R. norvegicus (PM = 10.98, MA = 1.14 and MI = 10.39) with O. bacoti mites were significantly higher than those of other host species (p < 0.05). The infestations of two dominant rat hosts (R. tanezumi and R. norvegicus) with O. bacoti mites varied in different environmental gradients (latitudes, longitudes, altitudes, landscapes and habitats) and on different sexes and ages of the hosts. The prevalence of juvenile R. norvegicus rats with O. bacoti mites (PM = 12.90%) was significantly higher than that of adult rats (PM = 9.62%) (p < 0.05). The prevalence (PM = 38.46%) and mean abundance (MA = 2.28 mites/host) of R. tanezumi rats with O. bacoti mites in the high latitude were higher than those in the low latitudes (p < 0.05). The majority of the total collected 4121 O. bacoti mites was found in the flatland landscape (91.28%) and indoor habitat (73.48%) (p < 0.05). The PM (10.66%) and MA (0.49 mites/host) of R. tanezumi rats with O. bacoti mites were significantly higher in the indoor habitat than in the outdoor habitat (p < 0.05). The tropical rat mites showed an aggregated distribution pattern on their first dominant host, R. tanezumi. Conclusion: The tropical rat mite (O. bacoti) is a widely distributed species of gamasid mite in Yunnan Province, Southwest China, and its dominant hosts are two synanthropic species of rats, R. tanezumi and R. norvegicus. It is mainly distributed in the flatland landscape and indoor habitat. It has some host-specificity, with a preference to rodents, especially R. tanezumi and R. norvegicus. The O. bacoti mites are of aggregated distribution on R. tanezumi rats.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Distribution and Host Selection of Tropical Rat Mite, Ornithonyssus bacoti, in Yunnan Province of Southwest China

Yin

Guo

Jin

et al. 2021

Animals

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“…Spatial distribution patterns are important in the study of animal and plant ecology, and usually include three pattern types: uniform, random and aggregated distributions [ 43 , 52 ]. There are a series of methods to determine the spatial distribution pattern of a certain population, and Iwao’s regression method in combination with the significance test of deviation ( F test) is one of them [ 10 , 39 ].…”

Section: Discussionmentioning

confidence: 99%

Infestation of chigger mites on Chinese mole shrew,Anourosorex squamipes, in Southwest China and ecological analysis

Guo

Zhao

et al. 2022

Parasite

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The Chinese mole shrew, Anourosorex squamipes Milne-Edwards, 1872, is a common species of insectivorous mammal in Southwest China. Based on field investigations between 2001 and 2019, the present study reports the infestation of chiggers (larvae of chigger mites) on the shrew in Southwest China and certain ecology parameters for the first time. A total of 3169 chiggers were collected from 1694 A. squamipes and they were identified into 72 species and 10 genera in the family Trombiculidae. The overall infestation prevalence (Pm), mean abundance (MA) and mean intensity (MI) of A. squamipes with chiggers reached 11.1%, 1.87 and 16.86, respectively. The species diversity, species composition and infestation of chiggers on A. squamipes fluctuated in different environments (latitudes, altitudes, habitats and landscapes) and on different sexes and ages of the shrew hosts with high heterogeneity and low species similarity. In the established linear regression equation (M* = 0.173 + 1.054 M) for dominant mite Leptotrombidium densipunctatum, both the α and β values (α = 0.173, β = 1.054) exceeded the boundary values (F = 4.67, p < 0.05), and therefore the spatial distribution pattern of this mite was determined as an aggregated distribution among different individuals of shrew hosts. The species abundance distribution of the chigger community on A. squamipes conformed to the lognormal distribution, and its curve showed a gradually descending tendency from the rare mite species to the dominant mite species. The curve tendency of species-sample relationship implies that more species of chiggers would be found if the host samples infinitely keep increasing.

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“…In the context of Algeria, studies specifically focusing on the ectoparasites of water birds are relatively recent. Only a few species have been investigated, including the common coot Fulica atra (Rouag-Ziane et al 2007), the Common Moorhen Gallinula chloropus (Ziani et al 2021), the greater flamingo Phoenocopterus roseus (Touati and Samraoui 2013), the glossy ibis Plegadis falcinellus (Touati et al 2015), the little egret Egretta garzetta (Blagoveshtchensky 1940;Temimi et al 2017), and the White Stork Ciconia ciconia in urban and natural areas (Bouguessa-Cheriak et al 2017) (Table 1). These studies highlight the limited scope of research conducted on water bird ectoparasites in Algeria and demonstrate the need for further investigations to expand our knowledge in this area.…”

Section: Introductionmentioning

confidence: 99%

New records of ectoparasites from the Black-headed Gull, Chroicocephalus ridibundus (Linnaeus, 1766) in Algeria

Hamdoune,

Talmat-Chaouchi,

Marniche

2023

Zoology and Ecology

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The Black-headed Gull, Chroicocephalus ridibundus Linnaeus, 1766, is a migratory bird that winters along the entire Algerian coast and is considered a protected species. In this study, we report the first-ever collection and identification of ectoparasites from Black-headed Gulls in the province of Boumerdes, Algeria. From October and November of 2020 and 2021, a total of 45 live Black-headed Gulls were captured using modified Bal-chatri traps and examined for the presence of ectoparasites. The results revealed a total of 3537 ectoparasite specimens, 264 of which belonged to Phthiraptera and 3273 to Acari. Within Phthiraptera, two species from the suborder Ischnocera were identified: Saemundssonia lari Fabricius, 1780, with a prevalence of 62.22%, and Quadraceps punctatus Burmeister, 1838, with a prevalence of 93.33%. Additionally, one species from the suborder Amblycera, Actornithophilus piceus lari Packard, 1870, was found with a prevalence of 86.66% and the lowest mean intensity with the value of 0.90. As for Acari, Zachvatkinia larica Mironov, 1989, was the most common with a prevalence of 71.11% and the highest mean intensity value of 102.28. Notably, all the recorded parasite species found in the Black-headed Gull in this study are reported in Algeria and in North Africa for the first time. The Pearson’s correlation test indicated a significant difference in parasite infestation of the gull population (r = 0.716; p = 0.046).

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Distribution patterns of ectoparasites of Glossy Ibis (Plegadis falcinellus) chicks

Cited by 7 publications

References 66 publications

Distribution and Host Selection of Tropical Rat Mite, Ornithonyssus bacoti, in Yunnan Province of Southwest China

Distribution and Host Selection of Tropical Rat Mite, Ornithonyssus bacoti, in Yunnan Province of Southwest China

Infestation of chigger mites on Chinese mole shrew,Anourosorex squamipes, in Southwest China and ecological analysis

New records of ectoparasites from the Black-headed Gull, Chroicocephalus ridibundus (Linnaeus, 1766) in Algeria

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