12 research outputs found

    Killi-Data News (Spring)

    Get PDF
    This is the start of Killi-Data News’ second year. In this first issue of the year we have the usual review of research pub- lications as well as input from Martin Reichard on his lab’s Nothobranchius research. Martin is responding to my reviews of his lab’s work in the previous edition. I am serious about making sure the content in this newsletter is reliable but I erred in the previous edition and Martin has written extensively to correct my mistake in the section “Erratum”. This reply is welcomed and owed to readers. I must confess that I don’t know everything and my area of scientific expertise is mostly restricted to histology and protein chemistry. When I comment on subjects outside of my area of expertise I tread on unfamiliar ground and am not much more expert than someone randomly selected off the street. For this reason we still need to expand the pool of reviewers for Killi-Data News. I am happy to report that Andy Patel and Manuel Zapater Galve have volunteered to review papers for us. Andy brings with him expertise in animal behavior and Manuel in physiol- ogy and ecology. We still need reviewers to eco-toxicology. Andrei Tatarenkov is reviewing a paper on Kryptolebias. Andrei is the expert on these fish and right now there is a need for expert opinion on these fish. It was hoped that An- drei would tell us a bit about Kryptolebias phylogenetics and address the issue of the ranges of K. hermaphroditus (sensu Costa) and marmoratus. As it turns out Andrei et al have a manuscript in production and have decided to hold off until after the paper’s publication to comment on this subject. There has been an appeal by Prof Ryan Earley for help with a large evolutionary ecology study he and collaborators are undertaking. His letter follows in the next section. There aren’t a lot of papers this quarter due to the cut-off for inclusion in the newsletter. We had decided to run from December first up until February first for the three months of the Spring quarter. As consequence this issue is a bit thin but already there has been a flurry of papers published from the second of February. The next issue will be much thicker

    A study of neurodegeneration and neuroprotection in Nothobranchius guentheri

    Get PDF
    Includes abstract.Includes bibliographical references.This thesis details a study into aging-related neurodegeneration of Nothobranchius guentheri and the affect of resveratrol-treatment on this neurodegeneration. The goal of the study was to identify cytological probes by which to study neurodegeneration and use these to deliver novel findings pertaining to Nothobranchius aging and resveratrol induced neuroprotection

    Killi-data News (Winter)

    Get PDF
    Valued readers, it is with a heavy heart that I inform you that this is the last issue of Killi-Data News. The good news is that we will be back as Killifish Research Review. The dissolution of Killi-Data International created a prob- lem: how can the newsletter of a defunct organization live on without that organization? But other additional problems were building in the background. The first issue numbered 15 pages. The previous issue was 28 pages. The number of killifish related papers is increasing while time on our end (the editorial team) is running out. It takes a lot of time to read the papers and put all the contributions together into the newsletter. Were it not for the people writing us to inform us that they appreciate our work we would probably give up. So we intend to continue in a new format. We are starting the journal afresh on Elsevier’s (formerly Bepress’s) Digital Commons platform which will enable us to publish reviews and summaries ad hoc, with open access and operating as a journal with a modicum of peer review. At this time we don’t yet have a link to the new journal page but this will be mailed out when we launch early next year. In the interim we hope you, the readers, will help us and come on board in a reviewer or contributor capacity. We need people with expertise in physiology, molecular phylogenetics, taxonomy, toxicology and ecology. As we are rebranding as a killifish review journal we are after review articles on killifish- related research. Submissions will be much appreciated. There is a diverse assortment of papers reviewed in this issue. The special edition of Developmental Dynamics on an- nual fish has provided a lot of material (some of it was given in the previous issue). We draw your attention to Podrabsky and Arezo’s editorial which lays out the need for research on annual fish. We also have two papers that are relevant to your health: the effect of glyphosate on Aphanius and arsenic on Fundulus. We also have new descriptions and molecular systematics work. We are fortunate to have Bettina Reichenbacher reviewing the recent description of the new killifish genus, Pseudorestias. We hope you enjoy this issue and catch up with us in the new year at our new home on the Digital Commons

    Killi-Data News (Fall)

    Get PDF
    Many interesting papers have been published over the last three months. The large volume of papers coupled with the start of the new college semester (and the workload it brings) delayed this issue of Killi-Data News. But better late than never—or so I hope! In this issue Richard van der Laan provides an insightful review of the recent Aphanius papers as to their taxonomic implications and questions. The systematic issues he raises show the importance of the Molecular project: we need to get more samples of the various cyprinodontiforme families to resolve unsettled systematic and taxonomic issues. In the Next issue Andrei Tatarenkov (and colleagues) will tell us about Kryptolebias distribution and evolution—now that the official research paper has been published. In the paper they have divided he mangrove killifish into three major clades by molecular phylogenetics. They have ana- lyzed several new populations. They have decided to allocate the names bonairensis, hermaphroditus and marmoratus to the clades. Also, Bettina Reichenbacher will also offer some in- sight into the new, monotypic, genus of killifish discovered in the high Andes of Chile, Pseudorestias lirimensis. We hope you will enjoy this issue and find something useful you can use in your fishroom or research

    Killi-Data News (Summer)

    Get PDF
    Over the last three months several interesting and exciting pa- pers have been published. By now most of you have heard the Nothobranchius fish poo news emanating from the Valenzano lab. That paper is reviewed and certainly has repercussions for the health of our captive fish. Polaçik et al have published interesting data with ramifications as to how we breed and incubate annual killifish. The big news in this issue is the paper from the Reznick lab which Jean Huber reviews. The contents of that paper goes to the heart of the question of just what a killifish is. The phylogenies from Reznick et al may fundamentally transform our understanding of the origin and evolutive timing of Cyp- rinodontiformes (including killifish). Once again, there are several papers on Fundulus heteroclitus on topics of genetics, hybrid zones, evolution and environmental toxicology. Again, there are new species of Melanorivulus-group and I think we can expect more species. There are three articles on the embryonic development of South American Annual fish: Austrofundulus, Austrolebias and Millerichthys. Martin & Podrabsky review the concept of developmental arrest and define the terms diapause, delayed hatching etc. . . as well as review the knowledge of diapause learned from Austrofundulus. I hope you enjoy this issue and put the information to some use in your fishrooms and/or research projects

    Killi-Data News (Winter)

    Get PDF
    This is the fourth edition, and concluding issue of the first volume, of Killi-Data News and I am happy that it has been well received by readers. At 25 pages this issue is a bit thin- ner than the last but this is because we agreed to make the cut-off for submissions the 1 st of December so we could get this edition out by the New Year. This is an exciting edition full of new species descrip- tions and analyses that will keep taxonomists busy for years to come. Costa has given us two molecular phylogenies on Melanorivulus as well as an exciting paper on Kryptolebias. Two new Nothobranchius are described and both papers will no doubt pave the way for further descriptions. There are two new publications on Mexican killifish. One is very depressing reading and serves to highlight the plight of Mexican killi- fish. Perhaps there is a partner for conservation in Rescuing Profundulus oaxacae? This edition we are joined by Mark Peterson who has agreed to review ecology papers. Help is still needed with the following topics: • Phylogenetics and Genomics research papers • Ecotoxicology • Behavioral research If you would like to join the editorial team please email me: killifl[email protected]. As papers are published they will be made available to the reviewers; or if you come across a paper send me a review. You can use this issue as a guide to the workload per paper. I know we professional researchers are constantly reading, and probably reading the interesting papers in this edition before they see it here. It doesn’t take long to lets us know what you learnt from the paper and why it would be important to others to read. The Molecular Platform project is growing steadily (http: //www.killi-data.org/list-names-molecular.php). We re- ceived several rare specimens of South American Annual from Didier Pillet as well a specimen of Pronothobranchius seymouri from Amer Faour—which has already been shared with two research labs. We have also been offered specimens from several big breeders: Lou Hersch (AKA), Willem-Jan Hoet- mer (KFN), Morgens Juhl (SKS), Jurij Phunkner (BKA) and Jeff Wasley (AKA). We are optimistic that the project will continue to grow and more researchers will make use of this facility. I hope you will enjoy this issue and continue your support of KDI. May you have a prosperous new year

    Killi-Data News (Spring)

    Get PDF
    This is the start of Killi-Data News’ second year. In this first issue of the year we have the usual review of research pub- lications as well as input from Martin Reichard on his lab’s Nothobranchius research. Martin is responding to my reviews of his lab’s work in the previous edition. I am serious about making sure the content in this newsletter is reliable but I erred in the previous edition and Martin has written extensively to correct my mistake in the section “Erratum”. This reply is welcomed and owed to readers. I must confess that I don’t know everything and my area of scientific expertise is mostly restricted to histology and protein chemistry. When I comment on subjects outside of my area of expertise I tread on unfamiliar ground and am not much more expert than someone randomly selected off the street. For this reason we still need to expand the pool of reviewers for Killi-Data News. I am happy to report that Andy Patel and Manuel Zapater Galve have volunteered to review papers for us. Andy brings with him expertise in animal behavior and Manuel in physiol- ogy and ecology. We still need reviewers to eco-toxicology. Andrei Tatarenkov is reviewing a paper on Kryptolebias. Andrei is the expert on these fish and right now there is a need for expert opinion on these fish. It was hoped that An- drei would tell us a bit about Kryptolebias phylogenetics and address the issue of the ranges of K. hermaphroditus (sensu Costa) and marmoratus. As it turns out Andrei et al have a manuscript in production and have decided to hold off until after the paper’s publication to comment on this subject. There has been an appeal by Prof Ryan Earley for help with a large evolutionary ecology study he and collaborators are undertaking. His letter follows in the next section. There aren’t a lot of papers this quarter due to the cut-off for inclusion in the newsletter. We had decided to run from December first up until February first for the three months of the Spring quarter. As consequence this issue is a bit thin but already there has been a flurry of papers published from the second of February. The next issue will be much thicker

    Genomic Fingerprints of Palaeogeographic History: The Tempo and Mode of Rift Tectonics Across Tropical Africa Has Shaped the Diversification of the Killifish Genus Nothobranchius (Teleostei: Cyprinodontiformes)

    Get PDF
    This paper reports a phylogeny of the African killifishes (Genus Nothobranchius, Order Cyprinodontiformes) informed by five genetic markers (three nuclear, two mitochondrial) of 80 taxa (seven undescribed and 73 of the 92 recognized species). These short-lived annual fishes occupy seasonally wet habitats in central and eastern Africa, and their distribution coincides largely with the East African Rift System (EARS). The fossil dates of sister clades used to constrain a chronometric tree of all sampled Nothobranchius recovered the origin of the genus at ~13.27 Mya. It was followed by the radiations of six principal clades through the Neogene. An ancestral area estimation tested competing biogeographical hypotheses to constrain the ancestral origin of the genus to the Nilo-Sudan Ecoregion, which seeded a mid-Miocene dispersal event into the Coastal ecoregion, followed closely (~10 Mya) by dispersals southward across the Mozambique coastal plain into the Limpopo Ecoregion. Extending westwards across the Tanzanian plateau, a pulse of radiations through the Pliocene were associated with dispersals and fragmentation of wetlands across the Kalahari and Uganda Ecoregions. We interpret this congruence of drainage rearrangements with dispersals and cladogenic events of Nothobranchius to reflect congruent responses to recurrent uplift and rifting. The coevolution of these freshwater fishes and wetlands is attributed to ultimate control by tectonics, as the EARS extended southwards during the Neogene. Geobiological consilience of the combined evidence supports a tectonic hypothesis for the evolution of Nothobranchius

    Control analysis of adrenal Sseroidogenesis

    Get PDF
    Thesis (MSc (Biochemistry))--University of Stellenbosch, 2004.This study describes: 1. Investigation of product inhibition regarding the metabolism of progesterone in ovine adrenal micosomes. 2. The employment of novel cell culture techniques to study the effect of CYP17 and CYP21 concentration on adrenal progesterone metabolism. 3. The formulation of a mathematical model describing the behaviour of the observed results in point 2

    Diario de Burgos : de avisos y noticias: Año XIV Número 4168 - 1904 octubre 25

    Get PDF
    Copia digital. España : Ministerio de Educación, Cultura y Deporte. Subdirección General de Coordinación Bibliotecaria, 201
    corecore