Theory predicts that sexually dimorphic traits under strong sexual selection, particularly those involved with intersexual signaling, can accelerate speciation and produce bursts of diversification. Sexual dichromatism (sexual dimorphism in color) is widely used as a proxy for sexual selection and is associated with rapid diversification in several animal groups, yet studies using phylogenetic comparative methods to explicitly test for an association between sexual dichromatism and diversification have produced conflicting results. Sexual dichromatism is rare in frogs, but it is both striking and prevalent in African reed frogs, a major component of the diverse frog radiation termed Afrobatrachia. In contrast to most other vertebrates, reed frogs display female-biased dichromatism in which females undergo color transformation, often resulting in more ornate coloration in females than in males. We produce a robust phylogeny of Afrobatrachia to investigate the evolutionary origins of sexual ...
TY - JOUR. T1 - Evidence that MIF plays a role in the development of pigmentation patterns in the frog. AU - Fukuzawa, Toshihiko. AU - Samaraweera, Preminda. AU - Mangano, Francesco T.. AU - Law, John H.. AU - Bagnara, Joseph T.. PY - 1995/1. Y1 - 1995/1. N2 - A ventrally localized melanization-inhibiting factor (MIF) may play an important role in the expression of dorsal-ventral pigment patternsof amphibians. In efforts to purify this putativeMIF, ventral skin conditioned medium (VCM) from Rana forreri was partially fractionated and used to immunize mice. A monoclonal antibody that has the ability to block the activity of MIF was isolated, and an immunoaffinity matrix was prepared bycross-linking the antibody to protein G-Sepharose. The fraction of VCM that bound to the affinity matrix decreased the number of melanized cells inthe Xenopus laevis neural tube explant assay, butdid not reduce significantly the number of cells that emigrated. The monoclonal antibody was used for immunohistochemical ...
The diversity and beauty of the pigmentation patterns on the shells of snails and bivalved molluscs invites us to construct models to understand their formation. The similarity of patterns in...
An 83-year-old woman presented with abrupt-onset asymptomatic green pigmented lesions on her sole. She had had progressive jaundice and was recently diagnosed with advanced cholangiocarcinoma. The patient had no fever. Physical examination revealed generalized marked jaundice and multiple, round, discrete, deep green, 1- to 2-mm flat areas of pigmentation on the right sole (figure 1A). Close examination showed a linear distribution on the crista cutis (figure 1B). Dermascopic investigation revealed [...]. ...
I am suffering from dark pigmentation on my neck for many yrs. Now am very awkward that I cant able to show. Please give some cream names or remedies for qu...
Question - Noticed pigmentation on roots of the hair on back and shoulders. What is the disease called?. Ask a Doctor about diagnosis, treatment and medication for Amyloidosis, Ask a Dermatologist
Question - Have pigmentation on neck and is spreading. What is the cure for this?. Ask a Doctor about diagnosis, treatment and medication for Erythema, Ask a Dermatologist
Of the bacteria offered, Kocuria rhizophilia (formerly Micrococcus luteus) yellow pigmentation is due to carotenoids the function of which here is not real obvious. Carotenoids do confer some degee of photoresistance and can function in photosynthesis. Pseudomonas chlororaphis greenish pigmentation is due to pyoverdin, a compound that helps the bug acquire iron. Im not so familiar with B. cereus pigmentation. Ive seen some vague brown, yellowish stuff and it does produce characteristic pigmentation on special media ...
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TY - JOUR. T1 - Phylogenetic analysis of the cardini group of Drosophila with respect to changes in pigmentation. AU - Brisson, Jennifer A.. AU - Wilder, Jason A. AU - Hollocher, Hope. PY - 2006/6. Y1 - 2006/6. N2 - Phenotypic variability is the engine that drives future diversification with the expectation that polymorphic ancestors give rise to descendants harboring a subset of the ancestral variation. Here we examine evolutionary transitions from polymorphism to monomorphism in a visually striking New World radiation of fruit flies, the Drosophila cardini group. This group is distributed across the Americas and the Caribbean islands and exhibits a wide spectrum of abdominal pigmentation variation. Specifically, the D. dunni subgroup consists of Caribbean island endemics, each of which is monomorphic for its pigmentation pattern, with an interspecific cline of pigmentation across the islands. The D. cardini subgroup consists of American continental species with wide-ranging distributions and ...
Skin pigmentation is a common skin problem worldwide. The phrase pigmentation describes discolouration of your skin, and it is very likel...
Definition of pigmentation in the online dictionary, Lexipedia. The meaning of pigmentation. What does pigmentation mean? pigmentation synonyms, pigmentation antonyms. Information about pigmentation in the free online dictionary and thesaurus.
Read "Polymorphism of pigmentation genes (OCA2 and ASIP) in some populations of Russia, Russian Journal of Genetics" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
This similarity is, I believe, no coincidence. A mollusc shell, like a one-dimensional cellular automaton, in effect grows one... - from A New Kind of Science
It is said that skin pigmentation more commonly occurs among women because of the changes that female sex hormones such as oestrogen and progesterone bring about in the production of melanin when the skin comes in prolonged contact with sun rays.
Are you unsatisfied with your tattoo? Do you have skin pigmentation problems; perhaps caused by ageing skin or the sun? Previously, removal of these skin issues was painful; but new laser methods offer the opportunity to clear your skin safely and pain-free.
Read "Testing the potential mechanisms for the maintenance of a genetic color polymorphism in bluefin killifish populations, Current Zoology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Pigmentation on the skin can make a person feel very ugly, and have a huge effect on their self confidence. One of the problems as far as pigmentation is concerned is that it can be seen on your skin from afar. It is not a surprise then to see that anyone suffering from skin pigmentation
28 yrs old Male asked about Pigmenation on my face, 1 doctor answered this and 45 people found it useful. Get your query answered 24*7 only on | Practo Consult
... Pigmentation is a condition that causes an individuals skin to darken. Small dark patches may cover large areas of the persons body or entirely. Pigmentation is typically not harmful, but it can be a sign of other medical conditions. A sun spot is a flat brown spot that develops on areas of your skin that have been exposed to the sun. Although they are also known as liver spots, they have nothing to do with your liver. Sun spots are also harmless and are not noncancerous. They do not pose any risk to your health. Many individuals choose to remove them for cosmetic reasons. Thats where pigmentation & sun spot removal comes in ...
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Pigmentation can come in many forms including brown spots, age spots, liver spots. Simply put, pigmentation refers to the small, freckle-like marks that are caused by excessive sun exposure. They commonly appear on the face, chest, shoulders and arms because those areas of the body get the most sunshine. Ultraviolet (UV rays) accelerate the production of melanin, which gives skin its brown pigmentation. Brown spots result from overactive pigment cells and melanin being grouped together in higher concentrations. Melanin tends to develop in small circles in a concentrated area.. These spots are mostly harmless and are usually addressed for cosmetic reasons. If you do notice an unusual brown spot on your skin, be sure to monitor its size and color. Schedule an appointment with your doctor if the spot does change.. ...
Equally, in the event of being pregnant, the ladies pigmentation marks after pregnancy of a lot care and precise therapy. At the moment its easy for the media to drive a wedge. Luckily, with every assessment we do on this website, we are going to present an Amazon link in an effort to look at the product your self and purchase it if you want. Occasional recognizing can be considered regular, but it might even be a sign of a miscarriage. Aftre you need speedy help from other ladies going through this proper now, be part of our personal pigmentation marks after pregnancy on Fb Your family and friends cannot see your posts. Even leaving my pigmenattion that first morning, pigmentation marks after pregnancy head was high again: as a result of she had taken management of her fears and asked for assist. When shopping round mafks pillows preserve these in thoughts examine pillows against one another. Your physique is producing more blood, your coronary heart is working tougher and the way in which you ...
Interestingly, 11 of the TFs tested [atonal (ato), Boundary element-associated factor of 32kD (BEAF-32), dsx, Ecdysone-induced protein 78C (Eip78C), Hormone receptor 3 (Hr46), Hr78, jing (jing), Methoprene-tolerant (Met), pointed (pnt), Su(z)12 (Su(z)12), and u-shaped (ush)] had opposite effects on pigmentation in different segments of the abdomen or in different sexes when knocked down with RNAi (Figure 7, Table S4, and File S5). Consequently, they are listed in more than one category in Figure 7. For example, knockdowns of ato, Eip78C, Hr46, Hr78, Met, and ush increased dark pigmentation in female abdominal segments A3, A4, and A5, and male abdominal segments A3 and A4 (also A2 in the case of ush) (Figure 7E), but reduced or eliminated dark pigmentation in female abdominal segment A6 (Figure 7B). Reducing activity of Su(z)12 resulted in broader midline peaks in female abdominal segments A3, A4, and A5, and male abdominal segments A3 and A4 (Figure 7E), but less dark pigmentation in female ...
PubMed comprises more than 30 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
Recently our advice lines and show team have received a huge amount of calls and visits from customers asking how can I improve my dogs coat and pigmentation?. With winter just around the corner now is often the time coat condition suffers due to the weather and pigmentation can also reduce due to the lack of sunlight. Here are some tips and ideas on how we can help improve these problems naturally.. Coat Growth and Condition. There are a number of products to improve coat condition, depending on what is required and the type of coat the breed may have.. Keepers Mix® is always our first recommendation as its an all-round supplement that when given daily maintains a strong healthy thick coat and is particularly popular for gundogs and rough coated terriers, but can also improve any type of coat. Consisting of just 8 different herbs and nothing else added, this combination makes sure your dog is getting everything he needs! Click here to find out more about our all round everyday health ...
One primary agenda of the developmental evolution field is to elucidate molecular mechanisms governing differences in animal form. While mounting evidence has established an important role for mutations in transcription controlling cis-regulatory elements (CREs), the underlying mechanisms that translate these alterations into differences in gene expression are poorly understood. Emerging studies focused on pigmentation differences…
Facial pigmentation may be due to a generalised process but most often is localised to the face. Melasma and actinic damage pigmentation are common and tend to be bilaterally distributed and slowly progressive. Irregularly shaped isolated lesions should be viewed with more caution, and biopsy may be required. Treatments include topical and oral medications, peels, intense pulsed light therapy and laser treatment.. ...
Pigmentation Home Treatment Pigmentation can occur on any part of the skin. It can also affect any gender male or female of any age. It has however been found
... is an all too common skin condition, especially in Australia. Come into AASC to find out what we can do for your pigmentation.
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Hereditary absence of otoliths was discovered by Lyon (1951) in mice homozygous for the mutant pallid. In transverse sections of 4-week-old mice the ears appeared normal except for the lack of otoliths.. The pallid mutant had been known previously for its effect on pigmentation: the coat colour is reduced to pale grey, and the eyes are pink. All animals homozygous for the mutant gene regularly show these pigment defects, but not all lack otoliths, and those that do show all grades of defect. Usually any particular otolith is either normal or completely absent, but occasionally otolith granules are present though fewer and larger than normal.. The present paper describes an investigation of the development of this otolith abnormality. It was hoped that such a study would provide some clue about the cause of the irregular manifestation of the defect, and of its association with reduced pigmentation.. ...
Tawny owls defend their territories very actively. You might like to read all these tawny owl facts that includes owls diet, habitat, behavior, and reproduction.
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Hai this is srikanth .IAM suffering from hyper pigmentation and rashes onn my face .My face looks like afire very red n colour .wht I have to do to escape fr...
The laser is attracted to the melanin in the skin which absorbs the light and is drawn to the surface without harming the surrounding tissue. Once drawn to the surface, the pigmentation will dry and fall off the area treated.. ...
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WHAT IS PIGMENTATION? A condition that causes the skin to appear lighter or darker than normal. If you have brown patches, you have whats known as hyper
Well this serum I got unexpectedly as it was completey new in the range. And I didnt have any expectations. But as I had a pigmentation problems I thought I will give it a go and started to use everyday in the morning before applying my day cream. Used it all over face and concentrated more on the areas where the pigmentation was. Now I have been using this serum for 2 full month and I am really surprised. Pigmentation is almost invisible and skin looks brighter, more even and healthier. I think I just named all the things that every woman would love to achieve. :) But this is just what it is. At first I thought that I will run out of the product really soon, but I was wrong. As it is light and creamy. WIthout a specific scent. Doesnt leave skin greasy or sticky. So if you have a dull skin with pigmentation problems then I suggest to give this a chance. ...
Whether its an overabundance of freckles and spots or a mustache-like line across your upper lip, dark pigmentation around your mouth can make you...
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We all love our P50. In fact, many of our clients cant live without it. Now, Biologique Recherche has rolled out a new formulation of this cult favorite, designed to lighten the skin and reduce pigmentation marks. Lotion P50 PIGM...
Feed your skin with Rodials night treatments, the perfect addition to your skin care regime. Free next working day delivery on UK orders over £50Pigmentation, Sensitive, Pores, Mature, Firm and Correct
Hi, I have pigmentation marks inside my lower eyelid, so different to the dark patches people normally get under their eyes. Can anyone suggest anything I can do to get rid of them? Thanks
Special Features : Helps to reduce the pigmentation mark Suitable for all skin types Quality product from Richfeel. A scented preparation to diminish unsightly
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My roundup of moisturisers for stretch marks and pigmentation. I share the pros and cons of the oils, balms and creams on the market.