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  • 1
    Publication Date: 2016-06-03
    Description: The ability to change coloration allows animals to modify their patterning to suit a specific function. Many freshwater fishes, for example, can appear cryptic by altering the dispersion of melanin pigment in the skin to match the visual background. However, melanin-based pigments are also used to signal dominance among competing males; thus colour change for background matching may conflict with colour change for social status signalling. We used a colour-changing freshwater fish to investigate whether colour change for background matching influenced aggressive interactions between rival males. Subordinate males that had recently darkened their skin for background matching received heightened aggression from dominant males, relative to males whose coloration had not changed. We then determined whether the social status of a rival male, the focal male's previous social status, and his previous skin coloration, affected a male's ability to change colour for background matching. Social status influenced skin darkening in the first social encounter, with dominant males darkening more than subordinate males, but there was no effect of social status on colour change in the second social encounter. We also found that the extent of skin colour change (by both dominant and subordinate males) was dependent on previous skin coloration, with dark males displaying a smaller change in coloration than pale males. Our findings suggest that skin darkening for background matching imposes a significant social cost on subordinate males in terms of increased aggression. We also suggest that the use of melanin-based signals during social encounters can impede subsequent changes in skin coloration for other functions, such as skin darkening for background matching.
    Keywords: behaviour, ecology, evolution
    Electronic ISSN: 2054-5703
    Topics: Natural Sciences in General
    Published by Royal Society
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  • 2
    Publication Date: 1997-03-28
    Description: Mapping of homozygous deletions on human chromosome 10q23 has led to the isolation of a candidate tumor suppressor gene, PTEN, that appears to be mutated at considerable frequency in human cancers. In preliminary screens, mutations of PTEN were detected in 31% (13/42) of glioblastoma cell lines and xenografts, 100% (4/4) of prostate cancer cell lines, 6% (4/65) of breast cancer cell lines and xenografts, and 17% (3/18) of primary glioblastomas. The predicted PTEN product has a protein tyrosine phosphatase domain and extensive homology to tensin, a protein that interacts with actin filaments at focal adhesions. These homologies suggest that PTEN may suppress tumor cell growth by antagonizing protein tyrosine kinases and may regulate tumor cell invasion and metastasis through interactions at focal adhesions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, J -- Yen, C -- Liaw, D -- Podsypanina, K -- Bose, S -- Wang, S I -- Puc, J -- Miliaresis, C -- Rodgers, L -- McCombie, R -- Bigner, S H -- Giovanella, B C -- Ittmann, M -- Tycko, B -- Hibshoosh, H -- Wigler, M H -- Parsons, R -- 5R35 CA39829/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Mar 28;275(5308):1943-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, College of Physicians & Surgeons, Columbia University, 630 West 168 Street, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9072974" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Brain Neoplasms/genetics ; Breast Neoplasms/genetics ; Chromosome Mapping ; *Chromosomes, Human, Pair 10 ; Female ; Frameshift Mutation ; *Genes, Tumor Suppressor ; Glioblastoma/genetics ; Humans ; Male ; Microfilament Proteins/chemistry ; Molecular Sequence Data ; *Mutation ; Neoplasm Transplantation ; Neoplasms/*genetics ; PTEN Phosphohydrolase ; *Phosphoric Monoester Hydrolases ; Phosphotyrosine/metabolism ; Prostatic Neoplasms/genetics ; Protein Tyrosine Phosphatases/chemistry/*genetics/physiology ; Protein-Tyrosine Kinases/antagonists & inhibitors ; Sequence Deletion ; Sequence Homology, Amino Acid ; Transplantation, Heterologous ; Tumor Cells, Cultured ; *Tumor Suppressor Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2014-11-05
    Description: Whole exome sequencing has proven to be a powerful tool for understanding the genetic architecture of human disease. Here we apply it to more than 2,500 simplex families, each having a child with an autistic spectrum disorder. By comparing affected to unaffected siblings, we show that 13% of de novo missense mutations and 43% of de novo likely gene-disrupting (LGD) mutations contribute to 12% and 9% of diagnoses, respectively. Including copy number variants, coding de novo mutations contribute to about 30% of all simplex and 45% of female diagnoses. Almost all LGD mutations occur opposite wild-type alleles. LGD targets in affected females significantly overlap the targets in males of lower intelligence quotient (IQ), but neither overlaps significantly with targets in males of higher IQ. We estimate that LGD mutation in about 400 genes can contribute to the joint class of affected females and males of lower IQ, with an overlapping and similar number of genes vulnerable to contributory missense mutation. LGD targets in the joint class overlap with published targets for intellectual disability and schizophrenia, and are enriched for chromatin modifiers, FMRP-associated genes and embryonically expressed genes. Most of the significance for the latter comes from affected females.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4313871/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4313871/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iossifov, Ivan -- O'Roak, Brian J -- Sanders, Stephan J -- Ronemus, Michael -- Krumm, Niklas -- Levy, Dan -- Stessman, Holly A -- Witherspoon, Kali T -- Vives, Laura -- Patterson, Karynne E -- Smith, Joshua D -- Paeper, Bryan -- Nickerson, Deborah A -- Dea, Jeanselle -- Dong, Shan -- Gonzalez, Luis E -- Mandell, Jeffrey D -- Mane, Shrikant M -- Murtha, Michael T -- Sullivan, Catherine A -- Walker, Michael F -- Waqar, Zainulabedin -- Wei, Liping -- Willsey, A Jeremy -- Yamrom, Boris -- Lee, Yoon-ha -- Grabowska, Ewa -- Dalkic, Ertugrul -- Wang, Zihua -- Marks, Steven -- Andrews, Peter -- Leotta, Anthony -- Kendall, Jude -- Hakker, Inessa -- Rosenbaum, Julie -- Ma, Beicong -- Rodgers, Linda -- Troge, Jennifer -- Narzisi, Giuseppe -- Yoon, Seungtai -- Schatz, Michael C -- Ye, Kenny -- McCombie, W Richard -- Shendure, Jay -- Eichler, Evan E -- State, Matthew W -- Wigler, Michael -- P30 CA016359/CA/NCI NIH HHS/ -- T32 GM007266/GM/NIGMS NIH HHS/ -- U54 HD083091/HD/NICHD NIH HHS/ -- UL1 TR000142/TR/NCATS NIH HHS/ -- Canadian Institutes of Health Research/Canada -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Nov 13;515(7526):216-21. doi: 10.1038/nature13908. Epub 2014 Oct 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA. ; 1] Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington 98195, USA [2] Molecular &Medical Genetics, Oregon Health &Science University, Portland, Oregon 97208, USA. ; 1] Department of Psychiatry, University of California, San Francisco, San Francisco, California 94158, USA [2] Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington 98195, USA. ; Department of Psychiatry, University of California, San Francisco, San Francisco, California 94158, USA. ; 1] Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06520, USA [2] Center for Bioinformatics, State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China. ; Child Study Center, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Yale Center for Genomic Analysis, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; 1] Center for Bioinformatics, State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China [2] National Institute of Biological Sciences, Beijing 102206, China. ; 1] Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA [2] New York Genome Center, New York, New York 10013, USA. ; 1] Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA [2] Department of Medical Biology, Bulent Ecevit University School of Medicine, 67600 Zonguldak, Turkey. ; Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York 10461, USA. ; 1] Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington 98195, USA [2] Howard Hughes Medical Institute, Seattle, Washington 98195, USA. ; 1] Department of Psychiatry, University of California, San Francisco, San Francisco, California 94158, USA [2] Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06520, USA [3] Child Study Center, Yale University School of Medicine, New Haven, Connecticut 06520, USA [4] Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25363768" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Child Development Disorders, Pervasive/*genetics ; Cluster Analysis ; Exome/genetics ; Female ; Genes ; Genetic Predisposition to Disease/*genetics ; Humans ; Intelligence Tests ; Male ; Mutation/*genetics ; Open Reading Frames/*genetics ; Reproducibility of Results
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2011-03-15
    Description: Genomic analysis provides insights into the role of copy number variation in disease, but most methods are not designed to resolve mixed populations of cells. In tumours, where genetic heterogeneity is common, very important information may be lost that would be useful for reconstructing evolutionary history. Here we show that with flow-sorted nuclei, whole genome amplification and next generation sequencing we can accurately quantify genomic copy number within an individual nucleus. We apply single-nucleus sequencing to investigate tumour population structure and evolution in two human breast cancer cases. Analysis of 100 single cells from a polygenomic tumour revealed three distinct clonal subpopulations that probably represent sequential clonal expansions. Additional analysis of 100 single cells from a monogenomic primary tumour and its liver metastasis indicated that a single clonal expansion formed the primary tumour and seeded the metastasis. In both primary tumours, we also identified an unexpectedly abundant subpopulation of genetically diverse 'pseudodiploid' cells that do not travel to the metastatic site. In contrast to gradual models of tumour progression, our data indicate that tumours grow by punctuated clonal expansions with few persistent intermediates.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4504184/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4504184/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Navin, Nicholas -- Kendall, Jude -- Troge, Jennifer -- Andrews, Peter -- Rodgers, Linda -- McIndoo, Jeanne -- Cook, Kerry -- Stepansky, Asya -- Levy, Dan -- Esposito, Diane -- Muthuswamy, Lakshmi -- Krasnitz, Alex -- McCombie, W Richard -- Hicks, James -- Wigler, Michael -- T32 CA009176/CA/NCI NIH HHS/ -- England -- Nature. 2011 Apr 7;472(7341):90-4. doi: 10.1038/nature09807. Epub 2011 Mar 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21399628" target="_blank"〉PubMed〈/a〉
    Keywords: Breast Neoplasms/diagnosis/*genetics/*pathology ; Carcinoma, Ductal, Breast/diagnosis/genetics/pathology ; Chromosome Breakpoints ; Clone Cells/cytology ; Diploidy ; Disease Progression ; *Evolution, Molecular ; Female ; Flow Cytometry ; Genetic Heterogeneity ; Genome, Human/genetics ; Genomics ; Humans ; Liver Neoplasms/genetics/secondary ; Loss of Heterozygosity ; Sequence Analysis, DNA/*methods ; Single-Cell Analysis/*methods
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2014-07-25
    Description: The biological responses to precipitation within the terrestrial components of Earth system models (ESMs), or land surface models (LSMs), are mechanistically simple and poorly constrained, leaving projections of terrestrial ecosystem functioning and feedbacks to climate change uncertain. A number of field experiments have been conducted or are underway to test how changing precipitation will affect terrestrial ecosystems. Results from these experiments have the potential to vastly improve modeled processes. However, the transformation of experimental results into model improvements still represents a grand challenge. Here, we review the current state of precipitation manipulation experiments and the precipitation responses of biological processes in LSMs to explore how these experiments can help improve model realism. First, we discuss contemporary precipitation projections and then review the structure and function of current-generation LSMs. We then examine different experimental designs and discuss basic variables that, if measured, would increase a field experiment's usefulness in a modeling context. Next, we compare biological processes commonly measured in the field with their model analogs and find that, in many cases, the way these processes are measured in the field is not compatible with the way they are represented in LSMs, an effect that hinders model development. We then discuss the challenge of scaling from the plot to the globe. Finally, we provide a series of recommendations aimed to improve the connectivity between experiments and LSMs, and conclude that studies designed from the perspective of researchers in both communities will provide the greatest benefit to the broader global change community.
    Print ISSN: 8755-1209
    Topics: Geosciences
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 6
    Publication Date: 2015-02-28
    Description: Journal of the American Chemical Society DOI: 10.1021/jacs.5b00182
    Print ISSN: 0002-7863
    Electronic ISSN: 1520-5126
    Topics: Chemistry and Pharmacology
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science, Ltd
    Aquaculture research 32 (2001), S. 0 
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The efficacy of either crystalline (C-) amino acids (AAs) or casein as sources of protein-bound (P-) AAs for AA enrichment of either high- (540 g kg−1, dry matter) or low- (390 g kg−1, dry matter) protein diets was examined in two 6-week experiments with barramundi Lates calcarifer (Bloch). The AA profile of a lysine (Lys) deficient gluten-rich basal diet was enriched incrementally in five steps either by using a mixture of C-AAs (predominantly Lys) at the expense of starch or by serial substitution of the gluten with casein (a rich source of Lys). These substitutions had a minimal effect on the protein and energy composition of the diet but enriched the Lys content (and that of other critically low essential AA) of the basal diet from 18 to 31 g kg−1 in Experiment 1, and from 12 to 18 g kg−1 in Experiment 2. A high fish meal control diet was included in both experiments. In each experiment, 12 diets were compared using 48 tanks of fish held in a freshwater recirculation system maintained at 28°C and with a 12:12 h light-dark photoperiod and fed once daily to satiety.Fish growth rate and feed conversion ratio improved quadratically with AA enrichment; the response was most marked for the low-protein diets. Efficacy of AA enrichment was dose dependent. At low dietary supplementation rates (〈3.3 g Lys kg−1 for the high-protein diets and up to 6 g Lys kg−1 for the low-protein diets), C-AAs were utilized as effectively as P-AAs. No further enhancement of fish productivity was induced by higher rates of C-AA supplementation with the high-protein diets.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The ectoparasitic digenean trematode Prototransversotrema steeri was observed to infect a wide range of estuarine fish species of southern Queensland. The intensity and incidence of trematode infections on Mugil cephalus hosts were recorded and appeared to alter with the estuarine movement of the sea mullet host.Highest trematode population densities were present on post-spawning M. cephalus which had recently traversed brackish estuarine waters. Similarly, the highest prevalence of external ‘red spot’ lesions was also recorded from such fish.The degree of complicity between P. steeri and ‘red spot’ bacterial pathogens was examined and is discussed. ‘Red spot’ or ‘ulcer disease’ is presented as a disease of multiple aetiology. It is suggested that some ectoparasites and a variety of primary and secondary bacterial pathogens may interact with environmental and behavioural factors to determine the prevalence of external lesions within each affected fish species.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 58 (2001), S. 0 
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Spawning of coal grunter Hephaestus carbo was successfully induced using doses of human chorionic gonadotrophin (hCG) between 500 and 3000 IU kg (body weight)−1. Water hardened eggs are telolecithal, amber in colour, spherical, transparent, demersal and slightly adhesive with a single large oil droplet and perivitelline space 47% of total egg volume. Cleavage begins 10–15 min after fertilization. Epiboly begins 6h after fertilization and continues for 4 h. Invagination of the neural tube is apparent 11·5 h after fertilization, followed by progressive organogenesis up to hatching 60–80 h after fertilization. An invagination in the yolk, consistent in shape, position and time of appearance among embryos spawned from numerous brood stock pairs, was visible in all fertilized eggs between neurulation (11-5 h) and early organogenesis (20 h). The functional significance of this yolk invagination is unknown. Newly-hatched larvae (4·2 mm LT) are elongate and possess well developed eyes, a functional mouth, and a large yolk sac. Yolk is fully resorbed and first feeding occurs at 6 days posthatching. The sequence of fin formation is caudal, second dorsal and anal, first dorsal, pectoral and pelvic. The prefiexion larval stage lasts for c.8 days and flexion of the notochord is complete within a further 8–9 days. Squamation commences at 30 days posthatching and transition to the juvenile life stage is complete by 35–40 days posthatching.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish diseases 4 (1981), S. 0 
    ISSN: 1365-2761
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Abstract. An investigation was undertaken to determine the bacterial species associated with the fish disease known as ‘red spot’ which affected wild fish stocks in south-eastern Queensland. Outbreaks of the disease in the Noosa River were examined with particular reference to the sea mullet, Mugil cephalus. The bacterial flora of the skin of healthy fish as well as those exhibiting early and advanced lesions was determined. In the lower Noosa River estuary, Vibrio anguillarum was the sole organism associated with very early lesions. It was later shown that V. alginolyticus was also associated with V. anguillarum in early lesions, but was considered to be a secondary invader. Aeromonas hydrophila was isolated from advanced lesions on fish taken in freshwater reaches of the river. This organism was also regarded as a secondary invader.
    Type of Medium: Electronic Resource
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