Pinworms of the red howler monkey (Alouatta seniculus) in Colombia: gathering the pieces of the pinworm-primate puzzle

Publication date: Available online 4 December 2019Source: International Journal for Parasitology: Parasites and WildlifeAuthor(s): Brenda Solórzano-García, Andrés Link Ospina, Silvia Rondón, Gerardo Pérez-Ponce de LeónAbstractPinworms of primates are believed to be highly host specific parasites, forming co-evolutionary associations with their hosts. In order to assess the strength and reach of such evolutionary links, we need to have a broad understanding of the pinworm diversity associated with primates. Here, we employed an integrative taxonomic approach to assess pinworm diversity in red howler monkeys in Colombia. Molecular and morphological evidence validate the presence of at least four different species of Trypanoxyuris occurring in red howler monkeys: T. minutus, a widely distributed species, and three new species, T. seunimiii n. sp., T. kemuimae n. sp. and T. kotudoi n. sp. The mitochondrial COI gene and the 28S ribosomal gene were used for phylogenetic assessments through Bayesian inference. The three new species were morphologically distinct and formed reciprocally monophyletic lineages. Further molecular lineage subdivision in T. minutus and T. kotudoi n. sp. without morphological correspondence, suggests the potential scenario for the existence of cryptic species. Phylogenetic relationships imply that the different species of Trypanoxyuris occurring in each howler monkey species were acquired through independent coloniz...
Source: International Journal for Parasitology: Parasites and Wildlife - Category: Parasitology Source Type: research

Related Links:

An international research team has identified a novel molecular target with potential to significantly improve future treatment of malignant pleural mesothelioma. The recent findings could lead to a drug that targets key genetic inhibitors often preventing a patient’s own immune system from suppressing mesothelioma tumor growth. Dr. Antonio Giordano, part of the collaborative research team, said the goal is reducing mesothelioma mortality with a combinational therapy that includes this new target. “These findings help us define molecular mechanisms that may be key to mesothelioma aggressiveness and progression,...
Source: Asbestos and Mesothelioma News - Category: Environmental Health Authors: Source Type: news
Answer to Parasite Case of the Week 576:Enterobius vermicularis(a.k.a., pinworm),adult maleThanks to all who wrote in with the correct answer. Florida Fan noted the presence of several identifying features: cephalic alae confirming the identity of pinworm in this adult nematode, and the curved tail with visible copulatory spicule defining the gender as male.Meanwhile, Idzi reminded us thatEnterobius vermiculariswas formerly known asOxyuris vermicularis.This is why you will sometimes see the infection referred to as oxyuriasis. Finally, Marc shared that he knew the answer but couldn't seem to " pin " it down 😉.
Source: Creepy Dreadful Wonderful Parasites - Category: Parasitology Source Type: blogs
Authors: Reinhard KJ, Camacho M Abstract The study of coprolites has been a theme of archaeology in the American Southwest. A feature of archaeoparasitology on the Colorado Plateau is the ubiquity of pinworm infection. As a crowd parasite, this ubiquity signals varying concentrations of populations. Our recent analysis of coprolite deposits from 2 sites revealed the highest prevalence of infection ever recorded for the region. For Salmon Ruins, the deposits date from AD 1140 to 1280. For Aztec Ruins, the samples can be dated by artifact association between AD 1182-1253. Both sites can be placed in the Ancestral Pue...
Source: Korean Journal of Parasitology - Category: Parasitology Tags: Korean J Parasitol Source Type: research
Confusing a Pollen Grain with a Parasite Egg: an Appraisal of "Paleoparasitological Evidence of Pinworm (Enterobius Vermicularis) Infection in a Female Adolescent Residing in Ancient Tehran". Korean J Parasitol. 2019 Dec;57(6):621-625 Authors: Camacho M, Reinhard KJ Abstract There is often the risk of confusing pollen grains with helminth eggs from archaeological sites. Thousands to millions of pollen grains can be recovered from archaeological burial sediments that represent past ritual, medication and environment. Some pollen grain types can be similar to parasite eggs. Such a confusion is ...
Source: Korean Journal of Parasitology - Category: Parasitology Tags: Korean J Parasitol Source Type: research
We present the case of a 7-year-old boy with sudden onset of pruritic erythemato-squamous confluent papules and plaques on UV-exposed skin, caused by proven enterobiasis. To our understanding, this is the first case of photodermatosis-like dermatitis caused by enterobiasis reported in the literature. PMID: 31855273 [PubMed - in process]
Source: Acta Dermatovenerologica Alpina, Panonica, et Adriatica - Category: Dermatology Tags: Acta Dermatovenerol Alp Pannonica Adriat Source Type: research
Answer toParasite Case of the Week 560: " Back to school " pinwormThis fun image had a question in 3 parts:What is the parasite shown? Eggs ofEnterobius vermicularisWhy is this a suitable parasite for September? September is the time that kids go back to school in America, and thus are more likely to obtain easily-transmitted parasites such as pinworm and head lice. As Nema noted, pinworm is " a parasite that is transmitted efficiently at the start of the school year because the embryonated eggs easily pass from the hands (unwashed) from one child to another and can also pass through the fomites "What i...
Source: Creepy Dreadful Wonderful Parasites - Category: Parasitology Source Type: blogs
We examined several potential determinants of pinworm infection in wild Australian cockroaches (Periplaneta australasiae) from multiple biological scales: (1) habitat; (2) season; (3) cockroach body size, developmental stage, and sex; and (4) interactions between 2 pinworm species (Leidynema appendiculata and Thelastoma sp.). Over 1 yr, we collected 239 cockroaches from 2 separate rooms in an Illinois greenhouse. We used generalized linear mixed-effects models (GLMMs) to evaluate simultaneously the influence of these factors on pinworm abundance, and nearly all had significant effects. Overall, the abundance of L. appendic...
Source: The Journal of Parasitology - Category: Parasitology Authors: Tags: J Parasitol Source Type: research
Enterobius vermicularis (pinworm) is one of the most common human parasitic helminths, and children are the most susceptible group. Some behavioral and environmental factors may facilitate pinworm infection. In t...
Source: BMC Infectious Diseases - Category: Infectious Diseases Authors: Tags: Research article Source Type: research
AbstractThe pinworm (Enterobius vermicularis) causes mostly mild infections characterised by nocturnal anal pruritus, mainly in children. Still, the infection is stigmatising and sleep disturbances may lead to lack of concentration. For Germany, no epidemiological data are available. Laboratory data of all patients for whom detection ofE. vermicularis by cellulose tape test had been requested between 2007 and November 2017 were analysed retrospectively.E. vermicularis was detected in 971/5578 (17.4%) samples collected from 3991 patients. The detection rate increased significantly within the period of investigation. It was ...
Source: European Journal of Clinical Microbiology and Infectious Diseases - Category: Microbiology Source Type: research
Answer:Enterobius vermicularisAs noted by Florida Fan, the diagnostic features shown in this case include the cephalic alae, esophageal bulb, and " D-shaped " eggs (oval with a flattened side). Natalie Ellis described them as'coffee bean'or'paper weight'shaped - I had never heard those analogies before!Thanks to Bernardino Rocha and Silvia for the interesting comments about the different Oxyuroidea found in mammals, reptiles and amphibians (see the comments section on this post for the full details). Thank you also to Old One who reminded us that dogs and cats do not have pinworm and are not the so...
Source: Creepy Dreadful Wonderful Parasites - Category: Parasitology Source Type: blogs
More News: Colombia Health | Enterobiasis | Genetics | Parasitic Diseases | Parasitology