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261. Can reduced predation offset negative effects of sea louse parasites on chum salmon? Full Text available with Trip Pro

Can reduced predation offset negative effects of sea louse parasites on chum salmon? The impact of parasites on hosts is invariably negative when considered in isolation, but may be complex and unexpected in nature. For example, if parasites make hosts less desirable to predators then gains from reduced predation may offset direct costs of being parasitized. We explore these ideas in the context of sea louse infestations on salmon. In Pacific Canada, sea lice can spread from farmed salmon (...) to migrating juvenile wild salmon. Low numbers of sea lice can cause mortality of juvenile pink and chum salmon. For pink salmon, this has resulted in reduced productivity of river populations exposed to salmon farming. However, for chum salmon, we did not find an effect of sea louse infestations on productivity, despite high statistical power. Motivated by this unexpected result, we used a mathematical model to show how a parasite-induced shift in predation pressure from chum salmon to pink salmon could

2014 Proceedings of the Royal Society B: Biological Sciences

262. Vegetative Compatibility and Heterokaryon Formation between Different Isolates of Colletotrichum Lindemuthianum by using the nit Mutant System Full Text available with Trip Pro

Vegetative Compatibility and Heterokaryon Formation between Different Isolates of Colletotrichum Lindemuthianum by using the nit Mutant System Colletotrichum lindemuthianum, the causative agent of bean anthracnose, is one of the most common pathogens leading to expressive damage to plants beyond presenting noticeable variability. The knowledge on vegetative compatibility groups (VCGs) is of particular interest in asexual fungi as they subdivide the population in groups that can exchange genetic (...) information via heterokaryosis and the parasexual cycle. Among the techniques used in studies about vegetative compatibility groups, the obtainment of nit mutants is apparent. This paper is aimed at obtaining heterokaryons between different isolates of C. lindemuthianum, grouping them in VCGs and evaluating their genetic variability by using the nit mutants system. Nit mutants were obtained from 20 single spore isolates. The mutants were phenotypically classified and paired for complementation

2011 Brazilian Journal of Microbiology

263. Treatment of human head lice Full Text available with Trip Pro

). "The biology of Pediculus humanus , Supplementary notes". Parasitology . 11 (2): 201–221. : . Mumcuoglu KY, Miller J, Gofin R, et al. (September 1990). "Epidemiological studies on head lice infestation in Israel. I. Parasitological examination of children". International Journal of Dermatology . 29 (7): 502–6. : . . Buxton, Patrick A. (1947). "The biology of Pediculus humanus ". The Louse; an account of the lice which infest man, their medical importance and control (2nd ed.). London: Edward Arnold. pp. 24 (...) . If living lice are still present, repeat the treatment using an anti-louse product with a different active ingredient. Keep in hair for 2 hours and rinse it out then, clean before sleep. Prophylactic treatment with pediculicides is not recommended. Itching may persist for up to a week after head lice eradication. [ ] Heated air [ ] A heated air device designed by Larada Sciences to kill headlice by drying Devices blowing heated air onto the scalp have been tested for efficiency in killing lice and eggs

2012 Wikipedia

264. Gene Splicing in Lice and the Challenge of Clothing

& Scientific Policy Post navigation in A terrific article recently published in , “Alternative Splice in Alternative Lice,” provides a compelling example of maximizing genome information – adaptation of the louse Pediculus humanus to the new habitat created when our ancestors invented clothing. HEAD VS BODY LICE Many parents encounter when their children are sent home from school with instructions to get rid of the horrible rice-krispie-like eggs (“nits”) clinging to their scalp hairs. A good washing won’t (...) do it. Medication and clunky combs do very little alone. The sooner the poor parent realizes that meticulous nit-picking is the only solution, the sooner the nightmare ends. But consider the louse’s point of view. Nitpicking isn’t easy Lice live on us so that they can drink our blood, with a little help from bacteria that provide the B vitamins needed to extract maximal nutrients from their meals. Head lice lay their eggs on our hair shafts, gluing them in place. These are the much more common

2015 PLOS Blogs Network

265. Mitochondrial genome deletions and minicircles are common in lice (Insecta: Phthiraptera) Full Text available with Trip Pro

a pattern of their occurrence consistent with an evolutionary series of minicircle types. Analysis of the nuclear-encoded, mitochondrially-targetted genes inferred from the body louse, Pediculus, suggests that the loss of mitochondrial single-stranded binding protein (mtSSB) may be responsible for the presence of minicircles in at least species with the most derived type 3 minicircles (Pediculus, Damalinia).Minicircular mt genomes are common in lice and appear to have arisen multiple times within (...) Mitochondrial genome deletions and minicircles are common in lice (Insecta: Phthiraptera) The gene composition, gene order and structure of the mitochondrial genome are remarkably stable across bilaterian animals. Lice (Insecta: Phthiraptera) are a major exception to this genomic stability in that the canonical single chromosome with 37 genes found in almost all other bilaterians has been lost in multiple lineages in favour of multiple, minicircular chromosomes with less than 37 genes on each

2011 BMC genomics

266. Impact of early salmon louse, Lepeophtheirus salmonis, infestation and differences in survival and marine growth of sea-ranched Atlantic salmon, Salmo salar L., smolts 1997–2009 Full Text available with Trip Pro

Impact of early salmon louse, Lepeophtheirus salmonis, infestation and differences in survival and marine growth of sea-ranched Atlantic salmon, Salmo salar L., smolts 1997–2009 The impact of salmon lice on the survival of migrating Atlantic salmon smolts was studied by comparing the adult returns of sea-ranched smolts treated for sea lice using emamectin benzoate or substance EX with untreated control groups in the River Dale in western Norway. A total of 143 500 smolts were released in 35 (...) : the only release in 1997, one of three in 2002 and the only group released in sea water in 2007. The effect of treating the smolts against salmon lice was smaller than the variability in return rates between release groups, and much smaller that variability between release years, but its overall contribution was still significant (P < 0.05) and equivalent to an odds ratio of the probability of being recaptured of 1.17 in favour of the treated smolts. Control fish also tended to be smaller as grilse (P

2013 Journal of Fish Diseases

267. Control of the chewing louse Bovicola (Werneckiella) ocellatus in donkeys, using essential oils. (Abstract)

Control of the chewing louse Bovicola (Werneckiella) ocellatus in donkeys, using essential oils. Infestations by lice can be a significant clinical and welfare issue in the management of large animals. The limited range of commercial pediculicides available and the development of resistance have led to the need to explore alternative louse management approaches. The results of in vitro and in vivo trials undertaken to control populations of the donkey chewing louse, Bovicola ocellatus (Piaget (...) ) (Phthiraptera: Trichodectidae) using the essential oils of tea tree (Melaleuca alternifolia) and lavender (Lavandula angustifolia) are reported here. Results of contact and vapour bioassays showed that 5% (v/v) tea tree and lavender oils resulted in > 80% louse mortality after 2 h of exposure. On farms, separate groups of 10 donkeys sprayed with 5% (v/v) tea tree and lavender oil as part of their usual grooming regime showed significant reductions in louse numbers compared with a control group (0.2

2013 Medical and veterinary entomology

268. Rates of genomic divergence in humans, chimpanzees and their lice Full Text available with Trip Pro

Rates of genomic divergence in humans, chimpanzees and their lice The rate of DNA mutation and divergence is highly variable across the tree of life. However, the reasons underlying this variation are not well understood. Comparing the rates of genetic changes between hosts and parasite lineages that diverged at the same time is one way to begin to understand differences in genetic mutation and substitution rates. Such studies have indicated that the rate of genetic divergence in parasites (...) is often faster than that of their hosts when comparing single genes. However, the variation in this relative rate of molecular evolution across different genes in the genome is unknown. We compared the rate of DNA sequence divergence between humans, chimpanzees and their ectoparasitic lice for 1534 protein-coding genes across their genomes. The rate of DNA substitution in these orthologous genes was on average 14 times faster for lice than for humans and chimpanzees. In addition, these rates were

2014 Proceedings of the Royal Society B: Biological Sciences

269. Risk factors for human lice and bartonellosis among the homeless, San Francisco, California, USA. Full Text available with Trip Pro

-2010 and 2012: 60 (30%) had body lice, 10 (4.9%)had head lice, and 6 (3.0%) had both. B. quintana was detected in 10 (15.9%) of 63 body lice pools and in 6 (37.5%)of 16 head lice pools. Variables significantly associated(p<0.05) with having body lice in this homeless population included male sex, African-American ethnicity, and sleeping outdoors. Our study findings suggest that specific segments of the homeless population would benefit from information on preventing body lice infestations and louse (...) Risk factors for human lice and bartonellosis among the homeless, San Francisco, California, USA. Homeless persons in San Francisco, California, USA,have been shown to have head and body lice infestations and Bartonella quintana infections. We surveyed a self selected population of homeless persons in San Francisco to assess infestations of head and body lice, risks of having body lice, and presence of B. quintana in lice. A total of 203 persons who reported itching were surveyed during 2008

2014 Emerging Infectious Diseases

270. Bartonella quintana in Body Lice from Scalp Hair of Homeless Persons, France Full Text available with Trip Pro

-6040 IM Animals Bartonella quintana classification genetics isolation & purification France Genotyping Techniques Homeless Persons Humans Pediculus classification genetics microbiology Scalp Dermatoses microbiology Trench Fever epidemiology transmission Bartonella quintana Pediculus humanus arthropods bacillary angiomatosis bacteria chronic bacteremia chronic lymphadenopathy clothing lice dual infestation endocarditis hair head lice homeless louse louse lineage nits parasites scalp trench fever (...) Bartonella quintana in Body Lice from Scalp Hair of Homeless Persons, France 24751237 2014 12 08 2018 11 13 1080-6059 20 5 2014 May Emerging infectious diseases Emerging Infect. Dis. Bartonella quintana in body lice from scalp hair of homeless persons, France. 907-8 10.3201/eid2005.131242 Drali Rezak R Sangaré Abdoul Karim AK Boutellis Amina A Angelakis Emmanouil E Veracx Aurélie A Socolovschi Cristina C Brouqui Philippe P Raoult Didier D eng Letter United States Emerg Infect Dis 9508155 1080

2014 Emerging Infectious Diseases

271. Effect of Permethrin-Impregnated Underwear on Body Lice in Sheltered Homeless Persons: A Randomized Controlled Trial. Full Text available with Trip Pro

Effect of Permethrin-Impregnated Underwear on Body Lice in Sheltered Homeless Persons: A Randomized Controlled Trial. The control of body lice in homeless persons remains a challenge.To determine whether the use of long-lasting insecticide-treated underwear provides effective long-term protection against body lice in homeless persons.A randomized, double-blind, placebo-controlled trial was conducted in February and December 2011 in 2 homeless shelters (Madrague Ville and Forbin) in Marseille (...) , France. Of the 125 homeless persons screened for eligibility, 73 body lice-infested homeless persons, 18 years or older, were enrolled.Body lice-infested homeless persons were randomly assigned to receive 0.4% permethrin-impregnated underwear or an identical-appearing placebo for 45 days, in a 1:1 ratio, with a permuted block size of 10. Visits were scheduled at days 14 and 45. Data regarding the presence or absence of live body lice were collected.The primary and secondary end points were

2014 JAMA dermatology (Chicago, Ill.) Controlled trial quality: predicted high

272. PEDICULOSIS, CHIROPRACTICALLY SPEAKING Full Text available with Trip Pro

PEDICULOSIS, CHIROPRACTICALLY SPEAKING 18739082 2008 08 29 2008 11 20 0093-402X 21 8 1923 Aug California state journal of medicine Cal State J Med PEDICULOSIS, CHIROPRACTICALLY SPEAKING. 362 eng Journal Article United States Cal State J Med 0414327 0093-402X 1923 8 1 0 0 1923 8 1 0 1 1923 8 1 0 0 ppublish 18739082 PMC1517671

1923 California state journal of medicine

273. A NOTE ON THE PREVENTION OF PEDICULOSIS Full Text available with Trip Pro

A NOTE ON THE PREVENTION OF PEDICULOSIS 20768574 2011 03 31 2011 03 31 0007-1447 1 2940 1917 May 05 British medical journal Br Med J A NOTE ON THE PREVENTION OF PEDICULOSIS. 579-80 Gunn J A JA eng Journal Article England Br Med J 0372673 0007-1447 2010 8 27 6 0 1917 5 5 0 0 1917 5 5 0 1 ppublish 20768574 PMC2348557

1917 British medical journal

274. Treatment of pediculosis. Full Text available with Trip Pro

Treatment of pediculosis. 4101409 1971 05 26 2018 11 30 0007-1447 2 5752 1971 Apr 03 British medical journal Br Med J Treatment of pediculosis. 49 Roberts G W GW eng Journal Article England Br Med J 0372673 0007-1447 59NEE7PCAB Hexachlorocyclohexane CIW5S16655 DDT AIM IM Child DDT therapeutic use Hexachlorocyclohexane therapeutic use Humans Insecticide Resistance Lice Infestations drug therapy 1971 4 3 1971 4 3 0 1 1971 4 3 0 0 ppublish 4101409 PMC1795927

1971 British medical journal

275. Pediculosis in Evacuated Children Full Text available with Trip Pro

Pediculosis in Evacuated Children 20783342 2011 04 04 2011 04 04 0007-1447 2 4162 1940 Oct 12 British medical journal Br Med J Pediculosis in Evacuated Children. 494-5 eng Journal Article England Br Med J 0372673 0007-1447 2010 8 27 6 0 1940 10 12 0 0 1940 10 12 0 1 ppublish 20783342 PMC2179585

1940 British medical journal

276. Lice (Treatment)

empty nits from Pediculus humanus capitis. Note the open shells still attached to the hairs and the porous operculi through which the lice have hatched. Photo courtesy of David G. Schaus. Three specimens of Pediculus humanus capitis. Pediculus humanus corporis. Phthirus pubis. Note the crab-like appearance. The head louse, Pediculus humanus capitis, has an elongated body and narrow anterior mouthparts. Body lice look similar but lay their eggs (nits) on clothing fibers instead of hair fibers (...) , Davidovitch N, Zangvil E. Seasonality trends of Pediculosis capitis and Phthirus pubis in a young adult population: follow-up of 20 years. J Eur Acad Dermatol Venereol . 2002 May. 16(3):257-9. . Pubic "Crab" Lice. Centers for Disease Control and Prevention. Available at . 2013 Sep 24; Accessed: October 31, 2014. Chosidow O. Scabies and pediculosis. Lancet . 2000 Mar 4. 355(9206):819-26. . Mumcuoglu KY, Meinking TA, Burkhart CN, Burkhart CG. Head louse infestations: the "no nit" policy and its consequences

2014 eMedicine.com

277. Lice (Overview)

cement surrounding the hair shaft. Photo courtesy of David Shum, MDWestern University, London Ontario. Two empty nits from Pediculus humanus capitis. Note the open shells still attached to the hairs and the porous operculi through which the lice have hatched. Photo courtesy of David G. Schaus. Three specimens of Pediculus humanus capitis. Pediculus humanus corporis. Phthirus pubis. Note the crab-like appearance. The head louse, Pediculus humanus capitis, has an elongated body and narrow anterior (...) corporis (body lice), and Pthirus pubis (pubic lice, sometimes called “crabs”). See the louse images below. The head louse, Pediculus humanus capitis, has an elongated body and narrow anterior mouthparts. Body lice look similar but lay their eggs (nits) on clothing fibers instead of hair fibers. The pubic louse, Pthirus pubis, is identified by its wide crablike body. See , a Critical Images slideshow, to help identify various skin reactions, recognize potential comorbidities, and select treatment

2014 eMedicine.com

278. Lice (Overview)

cement surrounding the hair shaft. Photo courtesy of David Shum, MDWestern University, London Ontario. Two empty nits from Pediculus humanus capitis. Note the open shells still attached to the hairs and the porous operculi through which the lice have hatched. Photo courtesy of David G. Schaus. Three specimens of Pediculus humanus capitis. Pediculus humanus corporis. Phthirus pubis. Note the crab-like appearance. The head louse, Pediculus humanus capitis, has an elongated body and narrow anterior (...) corporis (body lice), and Pthirus pubis (pubic lice, sometimes called “crabs”). See the louse images below. The head louse, Pediculus humanus capitis, has an elongated body and narrow anterior mouthparts. Body lice look similar but lay their eggs (nits) on clothing fibers instead of hair fibers. The pubic louse, Pthirus pubis, is identified by its wide crablike body. See , a Critical Images slideshow, to help identify various skin reactions, recognize potential comorbidities, and select treatment

2014 eMedicine Emergency Medicine

279. Lice (Treatment)

empty nits from Pediculus humanus capitis. Note the open shells still attached to the hairs and the porous operculi through which the lice have hatched. Photo courtesy of David G. Schaus. Three specimens of Pediculus humanus capitis. Pediculus humanus corporis. Phthirus pubis. Note the crab-like appearance. The head louse, Pediculus humanus capitis, has an elongated body and narrow anterior mouthparts. Body lice look similar but lay their eggs (nits) on clothing fibers instead of hair fibers (...) , Davidovitch N, Zangvil E. Seasonality trends of Pediculosis capitis and Phthirus pubis in a young adult population: follow-up of 20 years. J Eur Acad Dermatol Venereol . 2002 May. 16(3):257-9. . Pubic "Crab" Lice. Centers for Disease Control and Prevention. Available at . 2013 Sep 24; Accessed: October 31, 2014. Chosidow O. Scabies and pediculosis. Lancet . 2000 Mar 4. 355(9206):819-26. . Mumcuoglu KY, Meinking TA, Burkhart CN, Burkhart CG. Head louse infestations: the "no nit" policy and its consequences

2014 eMedicine Emergency Medicine

280. Lice (Follow-up)

empty nits from Pediculus humanus capitis. Note the open shells still attached to the hairs and the porous operculi through which the lice have hatched. Photo courtesy of David G. Schaus. Three specimens of Pediculus humanus capitis. Pediculus humanus corporis. Phthirus pubis. Note the crab-like appearance. The head louse, Pediculus humanus capitis, has an elongated body and narrow anterior mouthparts. Body lice look similar but lay their eggs (nits) on clothing fibers instead of hair fibers (...) , Davidovitch N, Zangvil E. Seasonality trends of Pediculosis capitis and Phthirus pubis in a young adult population: follow-up of 20 years. J Eur Acad Dermatol Venereol . 2002 May. 16(3):257-9. . Pubic "Crab" Lice. Centers for Disease Control and Prevention. Available at . 2013 Sep 24; Accessed: October 31, 2014. Chosidow O. Scabies and pediculosis. Lancet . 2000 Mar 4. 355(9206):819-26. . Mumcuoglu KY, Meinking TA, Burkhart CN, Burkhart CG. Head louse infestations: the "no nit" policy and its consequences

2014 eMedicine Emergency Medicine

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