Some Dinosaurs Had Lice

Researchers have determined that some dinosaurs had lice. NPR's Scott Simon talks with paleontologist Chung Kun Shih about this exciting yet revolting discovery.
Source: NPR Health and Science - Category: Consumer Health News Source Type: news

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We report a variety of ectoparasites infesting small mammals and domestic dogs in the Caatinga biome, where these ectoparasites probably act as vectors of rickettsiae, ehrlichial agents (E. canis and Ehrlichia sp. strain Natal) and C. burnetii. Our results highlight to the potential risks of human infection by these tick-borne agents in the Caatinga biome.
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Title: Bedbugs (Bed Bugs) vs. LiceCategory: Diseases and ConditionsCreated: 2/18/2020 12:00:00 AMLast Editorial Review: 2/18/2020 12:00:00 AM
Source: MedicineNet Skin General - Category: Dermatology Source Type: news
Abstract Most human epidemiological and clinical studies use visual inspection of the hair and scalp to diagnose Pediculus humanus capitis , however this method has low sensitivity to diagnose active infestations (presence of nymphs and adult lice). Vacuuming the hair and scalp has been used as a diagnostic method, but there are no previous data comparing its effectiveness with visual inspection. The aim of this study was to determine the prevalence of overall infestation (nits and trophic stages), of active infestation by Pediculus humanus capitis , and to evaluate the effectiveness of vacuuming in comparison wit...
Source: Revista do Instituto de Medicina Tropical de Sao Paulo - Category: Tropical Medicine Authors: Tags: Rev Inst Med Trop Sao Paulo Source Type: research
We describe the infections that appeared in the life and work of John Donne (1572-1631), the English metaphysical poet, mainly the exanthematic typhus that suffered and gave arise to his work Devotions upon emergent occasions, and several steps in my sickness. We discuss the vector of transmission of this disease, in comparison of other infections in that period, that Donne´s scholars have related to the flea without mentioning the body louse, the true vector of the exanthematic typhus. Likewise, we mention the exanthematic typhus´s symptoms in his Devotions in comparison with the Luis de Toro´s or Alfons...
Source: Revista Espanola de Quimioterapia - Category: Drugs & Pharmacology Authors: Tags: Rev Esp Quimioter Source Type: research
Genomic selection enables cumulative genetic gains in key production traits such as disease resistance, playing an important role in the economic and environmental sustainability of aquaculture production. However, it requires genome-wide genetic marker data on large populations, which can be prohibitively expensive. Genotype imputation is a cost-effective method for obtaining high-density genotypes, but its value in aquaculture breeding programs which are characterized by large full-sibling families has yet to be fully assessed. The aim of this study was to optimize the use of low-density genotypes and evaluate genotype i...
Source: G3: Genes Genomes Genetics - Category: Genetics & Stem Cells Authors: Tags: Genomic Prediction Source Type: research
Abstract The salmon aquaculture industry has adopted the use of invertivorous 'cleaner fishes' (CF) for biological control of sea louse infestations on farmed salmon. At present, ∼50 million CF are used annually in Norway alone, with variable success in experimental and industrial contexts. We used a national scale database of louse counts, delousing treatments and CF stocking events on Norwegian salmon farms to test for evidence of CF efficacy at 488 sites that completed a grow-out cycle within 2016-2018. Our analysis revealed that sites using more CF over the duration of a grow-out cycle did not have fewer l...
Source: International Journal for Parasitology - Category: Parasitology Authors: Tags: Int J Parasitol Source Type: research
Diverse groups of ectoparasitic arthropods cause significant morbidity and mortality in most of the approximately 1.49 billion head of cattle worldwide. Hematophagous ectoparasites (ie, blood-feeding flies, myiasis-causing flies, lice, mites, ticks) are the most important in cattle. Intense use of ectoparasiticides to treat infestations can result in ectoparasite populations becoming resistant to this treatment method. Approaches integrating the use of different technologies are required to manage cattle ectoparasites effectively while addressing societal expectations regarding food safety and environmental health. Assessi...
Source: Veterinary Clinics of North America: Food Animal Practice - Category: Veterinary Research Authors: Source Type: research
We report successful improvement of welfare and reduction of flea counts post application of pour-on deltamethrin on the property. In the absence of registered flea product for cattle in Australia, deltamethrin pour-on product is a suitable option, because of its registration for control of lice and flies on cattle.
Source: Veterinary Parasitology - Category: Veterinary Research Source Type: research
Abstract Allopreening occurs when 1 bird preens another bird. The behavior is normally directed at the head and neck of the recipient, i.e., regions that the bird cannot self-preen. Studies of penguins, pigeons, and other groups of birds suggest that allopreening plays a role in the control of ectoparasites, such as ticks and feather lice. However, it is not known whether allopreening increases in response to increases in parasite load, or whether it is a programmed response that occurs independently of parasite load. We conducted a laboratory experiment using wild-caught rock pigeons (Columba livia) to test the r...
Source: The Journal of Parasitology - Category: Parasitology Authors: Tags: J Parasitol Source Type: research
Title: Lice vs. FleasCategory: Diseases and ConditionsCreated: 1/29/2020 12:00:00 AMLast Editorial Review: 1/29/2020 12:00:00 AM
Source: MedicineNet Skin General - Category: Dermatology Source Type: news
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