Parasitic Diseases

Baker, David G.

doi:10.1016/b978-012074903-4/50016-9

Cited by 9 publications

(8 citation statements)

References 133 publications

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“… Note: The information of body length and life cycle was from Dynum et al [ 31 ], Florence [ 32 ], Wall and Shearer [ 30 ] and Baker et al [ 33 ] for the pig louse; from Baker [ 22 ] and Goodwin et al [ 34 ] for the rat louse; from Buxton [ 35 ] and Service [ 36 ] for the human pubic louse; and from Buxton [ 35 ], Buxton [ 37 ] and Service [ 36 ] for the human body louse and head louse. …”

Section: Discussionmentioning

confidence: 99%

“…asiatica is only found in Asia, Po. spinulosa has a worldwide distribution and is responsible, as a vector, for the transmission of pathogenic microorganisms such as Mycoplasma haemomuris (formerly known as Haemobartonella muris ), Rickettsia typhi , Trypanosoma lewisi , Borrellia duttoni and Brucella brucei [ 20 - 22 ]. We show that both Po.…”

Section: Introductionmentioning

confidence: 99%

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Fragmented mitochondrial genomes of the rat lice, Polyplax asiatica and Polyplax spinulosa: intra-genus variation in fragmentation pattern and a possible link between the extent of fragmentation and the length of life cycle

et al. 2014

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BackgroundBlood-sucking lice (suborder Anoplura) parasitize eutherian mammals with 67% of the 540 described species found on rodents. The five species of blood-sucking lice that infest humans and pigs have fragmented mitochondrial genomes and differ substantially in the extent of fragmentation. To understand whether, or not, any life-history factors are linked to such variation, we sequenced the mt genomes of Polyplax asiatica and Polyplax spinulosa, collected from the greater bandicoot rat, Bandicota indica, and the Asian house rat, Rattus tanezumi, respectively.ResultsWe identified all of the 37 mitochondrial genes common to animals in Polyplax asiatica and Polyplax spinulosa. The mitochondrial genes of these two rat lice are on 11 circular minichromosomes; each minichromosome is 2–4 kb long and has 2–7 genes. The two rat lice share the same pattern for the distribution of the protein-coding genes and ribosomal RNA genes over the minichromosomes, but differ in the pattern for the distribution of 8 of the 22 transfer RNA genes. The mitochondrial genomes of the Polyplax rat lice have 3.4 genes, on average, on each minichromosome and, thus, are less fragmented than those of the human lice (2.1 and 2.4 genes per minichromosome), but are more fragmented than those of the pig lice (4.1 genes per minichromosome).ConclusionsOur results revealed distinct patterns of mitochondrial genome fragmentation within the genus Polyplax and, furthermore, indicated a possible inverse link between the extent of mitochondrial genome fragmentation and the length of life cycle of the blood-sucking lice.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fragmented mitochondrial genomes of the rat lice, Polyplax asiatica and Polyplax spinulosa: intra-genus variation in fragmentation pattern and a possible link between the extent of fragmentation and the length of life cycle

et al. 2014

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“…These morphological and morphometric data meet criteria for the eggs of Syphacia (an oxyurid nematode of rodents), for example, S. obvelata or S. stroma. Information regarding the size of the egg of S. obvelata in the scienti c literature varies: 115 × 35 µm (Skrjabin et al 1960) vs. 111-153 × 33-55 µm (Baker 2006). Thus, for the studied reindeer, Syphacia would be a spurious parasite (true parasitic organism, but with a different host).…”

Section: Resultsmentioning

confidence: 99%

D-shaped nematode eggs in the feces of Rangifer tarandus: A story in pictures

Loginova

2023

Preprint

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D-shaped nematode eggs in Rangifer tarandus feces are expected to be oxyurid nematodes of the genus Skrjabinema. The species S. tarandi is considered species-specific for this host. There is no consensus regarding the cross-infection of reindeer and sheep with S. ovis and S. tarandi. The drawings proposed by researchers complicate differential diagnostics. Micrographs of S. tarandi eggs obtained via light microscopy and scanning electron microscopy, as well as photographs of S. ovis eggs, and drawings made on their basis, are proposed to confidently distinguishing between representatives of these two species, taking into account morphometric data. Thus, the egg of S. tarandi has a thickening on the convex side, in contrast to the egg of S. ovis. It is shown that due to the specific feeding habits of R. tarandus, D-shaped eggs of parasitic nematodes of small rodents can also be found in their feces. The latter should be considered spurious parasites.

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“…Considering the reported weekly, monthly and occasional sightings. A rise in rodent numbers can be attributed to shifts in human environment, ecology and climate [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] with research indicating a heightened risk of rat infestation in neighborhoods characterized by high poverty levels, aged buildings, dense housing systems and inadequate sanitation [11,20,21]. Similar to most other African nations, Ghana has a persisting sanitation challenges and poor drainage management contributing to the proliferation and establishment of pest populations.…”

Section: Discussionmentioning

confidence: 99%

Exploring rat meat consumption patterns, and perception of risks regarding urban rats; implications for rat-borne zoonoses outbreaks and drug resistant pathogens spread in urban areas of Ghana

Deku,

Younge,

Doggett

et al. 2024

Preprint

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Background This research explores rat meat consumption patterns among urban Ghanaians and their perception of risks associated with urban rats. Two hypotheses on risk perception among urban inhabitants were proposed: the risk of contracting diseases by consuming rat meat and the risk of contracting diseases from peridomestic rats. Method/Principal findings To achieve the objective, a descriptive cross-sectional survey using a questionnaire was conducted that recruited participants from urban settings in Ghana. Of the 829 respondents recruited, around 65% consumed rodents, and of these, 35% consumes rat meat. Through statistical analyses, our data revealed gender, age, region, religion, ethnicity, education, profession and income significantly influenced rat meat consumption and resident's perception of disease risk. An adjusted multivariable model identified males aged 27 to 34years with no formal or a basic education in southern Ghana as the most likely rat meat consumers. The majority of the participants (60.3%) indicated rats are often present in homes and community drains, and have some awareness where rats can be found in their place of residence. Low perception scores regarding disease risks associated with rat meat consumption were recorded, with the majority of respondents (55-74.9% of 829) perceiving that there were minimal disease threats associated with peridomestic rats. The outcome of this belief was that participants undertook limited rat control in their neighborhood. Conclusion/Significance The poor perceptions of disease risks regarding rats increases the vulnerabilities of urban Ghanaians to zoonotic spillovers. This underscores the critical need for public education on rat-borne zoonoses in urban Ghana. This survey presents the first baseline study on urban inhabitant's interactions with rats in Ghana and the data will be crucial in the on-going interventions by the Ghana Health Service to minimize transmission of Lassa fever and other rodent-borne diseases and the spread of rodent related drug resistant pathogens.

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Parasitic Diseases

Cited by 9 publications

References 133 publications

Fragmented mitochondrial genomes of the rat lice, Polyplax asiatica and Polyplax spinulosa: intra-genus variation in fragmentation pattern and a possible link between the extent of fragmentation and the length of life cycle

Fragmented mitochondrial genomes of the rat lice, Polyplax asiatica and Polyplax spinulosa: intra-genus variation in fragmentation pattern and a possible link between the extent of fragmentation and the length of life cycle

D-shaped nematode eggs in the feces of Rangifer tarandus: A story in pictures

Exploring rat meat consumption patterns, and perception of risks regarding urban rats; implications for rat-borne zoonoses outbreaks and drug resistant pathogens spread in urban areas of Ghana

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