Zambia and Malawi Are a Wild New Twist on the Classic
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Phylogeny of a Rapidly Evolving Clade: the Cichlid Fishes of Lake Malawi
Proc. Natl. Acad. Sci. USA Vol. 96, pp. 5107–5110, April 1999 Evolution Phylogeny of a rapidly evolving clade: The cichlid fishes of Lake Malawi, East Africa (adaptive radiationysexual selectionyspeciationyamplified fragment length polymorphismylineage sorting) R. C. ALBERTSON,J.A.MARKERT,P.D.DANLEY, AND T. D. KOCHER† Department of Zoology and Program in Genetics, University of New Hampshire, Durham, NH 03824 Communicated by John C. Avise, University of Georgia, Athens, GA, March 12, 1999 (received for review December 17, 1998) ABSTRACT Lake Malawi contains a flock of >500 spe- sponsible for speciation, then we expect that sister taxa will cies of cichlid fish that have evolved from a common ancestor frequently differ in color pattern but not morphology. within the last million years. The rapid diversification of this Most attempts to determine the relationships among cichlid group has been attributed to morphological adaptation and to species have used morphological characters, which may be sexual selection, but the relative timing and importance of prone to convergence (8). Molecular sequences normally these mechanisms is not known. A phylogeny of the group provide the independent estimate of phylogeny needed to infer would help identify the role each mechanism has played in the evolutionary mechanisms. The Lake Malawi cichlids, however, evolution of the flock. Previous attempts to reconstruct the are speciating faster than alleles can become fixed within a relationships among these taxa using molecular methods have species (9, 10). The coalescence of mtDNA haplotypes found been frustrated by the persistence of ancestral polymorphisms within populations predates the origin of many species (11). In within species. -
"A Revision of the Freshwater Crabs of Lake Kivu, East Africa."
Northern Michigan University NMU Commons Journal Articles FacWorks 2011 "A revision of the freshwater crabs of Lake Kivu, East Africa." Neil Cumberlidge Northern Michigan University Kirstin S. Meyer Follow this and additional works at: https://commons.nmu.edu/facwork_journalarticles Part of the Biology Commons Recommended Citation Cumberlidge, Neil and Meyer, Kirstin S., " "A revision of the freshwater crabs of Lake Kivu, East Africa." " (2011). Journal Articles. 30. https://commons.nmu.edu/facwork_journalarticles/30 This Journal Article is brought to you for free and open access by the FacWorks at NMU Commons. It has been accepted for inclusion in Journal Articles by an authorized administrator of NMU Commons. For more information, please contact [email protected],[email protected]. This article was downloaded by: [Cumberlidge, Neil] On: 16 June 2011 Access details: Access Details: [subscription number 938476138] Publisher Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37- 41 Mortimer Street, London W1T 3JH, UK Journal of Natural History Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713192031 The freshwater crabs of Lake Kivu (Crustacea: Decapoda: Brachyura: Potamonautidae) Neil Cumberlidgea; Kirstin S. Meyera a Department of Biology, Northern Michigan University, Marquette, Michigan, USA Online publication date: 08 June 2011 To cite this Article Cumberlidge, Neil and Meyer, Kirstin S.(2011) 'The freshwater crabs of Lake Kivu (Crustacea: Decapoda: Brachyura: Potamonautidae)', Journal of Natural History, 45: 29, 1835 — 1857 To link to this Article: DOI: 10.1080/00222933.2011.562618 URL: http://dx.doi.org/10.1080/00222933.2011.562618 PLEASE SCROLL DOWN FOR ARTICLE Full terms and conditions of use: http://www.informaworld.com/terms-and-conditions-of-access.pdf This article may be used for research, teaching and private study purposes. -
Behaviour: an Important Diagnostic Tool for Lake Malawi Cichlids PDF
FISH and FISHERIES, 2002, 3, 213^224 Behaviour: an important diagnostic tool for Lake Malawi cichlids Jay R Stau¡er Jr1, Kenneth R McKaye2 & Ad F Konings3 1School of Forest Resources, Pennsylvania State University,University Park, Pennsylvania, PA16802, USA; 2Appalachian Laboratory,UMCES,301Braddock Road, Frostburg, Maryland, MD 21532, USA; 3Cichlid Press, PO Box13608, El Paso,Texas, T X 79913, USA Abstract Correspondence: Historically,the cichlid ¢shes of Lake Malawi, which probably represent one of the best Jay R. Stau¡er Jr, examples of rapid radiation of vertebrates, have been diagnosed with morphological School of Forest Resources, and genetic data. Many of the populations once thought to be conspeci¢c have been Pennsylvania State hypothesized to be separate species based on behavioural data. The use of behavioural University, data, as expressed in mate choice based on colour patterns or bower shapes, has been University Park, successfully used to diagnose both rock-dwelling and sand-dwelling cichlid species. Pennsylvania, PA Additionally,a combination of bower shapes and courtship patterns have been used as 16802, USA Tel.: þ1 814 863 0645 synapomorphies to diagnose genera within the Lake Malawi cichlid £ock. It is con- Fax: þ18148653725 cluded that taxonomists need to include behavioural data with morphological and E-mail:[email protected] genetic databases to diagnose species and to determine the phylogenetic relationships withinthis diverse assemblage of ¢shes. Received 5 Dec 2001 Accepted10Jun 2002 Keywords allopatry,behaviour, Cichlidae, -
Continuous 1.3-Million-Year Record of East African Hydroclimate, and Implications for Patterns of Evolution and Biodiversity
Continuous 1.3-million-year record of East African hydroclimate, and implications for patterns of evolution and biodiversity Robert P. Lyonsa,1, Christopher A. Scholza,2, Andrew S. Cohenb, John W. Kingc, Erik T. Brownd, Sarah J. Ivorye, Thomas C. Johnsond, Alan L. Deinof, Peter N. Reinthalg, Michael M. McGlueh, and Margaret W. Blomeb,3 aDepartment of Earth Sciences, Syracuse University, Syracuse, NY 13244; bDepartment of Geosciences, University of Arizona, Tucson, AZ 85721; cGraduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882; dLarge Lakes Observatory and Department of Earth and Environmental Sciences, University of Minnesota, Duluth, MN 55812; eInstitute at Brown for the Study of the Environment and Society, Brown University, Providence, RI 02912; fBerkeley Geochronology Center, Berkeley, CA 94709; gDepartment of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721; and hDepartment of Earth and Environmental Sciences, University of Kentucky, Lexington, KY 40506 Edited by Mark H. Thiemens, University of California, San Diego, La Jolla, CA, and approved October 29, 2015 (received for review June 30, 2015) The transport of moisture in the tropics is a critical process for the Lake Malawi and Its Catchment global energy budget and on geologic timescales, has markedly Lake Malawi (Nyasa) is one of the world’s largest and oldest lakes, influenced continental landscapes, migratory pathways, and bi- and is situated at the southern end of the East African Rift Sys- ological evolution. Here we present a continuous, first-of-its-kind tem. The hydrologically open, freshwater ecosystem spans 6° of 1.3-My record of continental hydroclimate and lake-level variability latitude (9–15° S), and has a length of ∼580 km and a maximum derived from drill core data from Lake Malawi, East Africa (9–15° S). -
DRONES in INTERNATIONAL DEVELOPMENT Innovating the Supply Chain to Reach Patients in Remote Areas
DRONES IN INTERNATIONAL DEVELOPMENT Innovating the Supply Chain to Reach Patients in Remote Areas AUTHORS: SCOTT DUBIN, ASHLEY GREVE, RYAN TRICHE DISCLAIMER: This activity was funded by the U.S. President's Emergency Plan for AIDS Relief, through the U.S. Agency for International Development. The views and opinions of authors expressed herein are our own and do not necessarily state or reflect those of the U.S. Government. TABLE OF CONTENTS INTRODUCTION 1 EXECUTIVE SUMMARY 2 KEY RECOMMENDATIONS FOR SUCCESS 2 SECTION I: PLANNING 9 ACTIVITY OVERVIEW AND OBJECTIVES 9 SELECTING THE RIGHT DRONE 11 INITIAL INVESTIGATIONS AND SCOPING VISITS 12 VALIDATION OF USE CASES 13 ACTIVITY DESIGN 14 CONTRACTING WITH DRONE SERVICE PROVIDERS 17 SECTION II: IMPLEMENTATION 19 FLIGHT OPERATIONS APPROVALS 19 COMMUNITY SENSITIZATION 20 START-UP 20 PHASE 1: JUNE-JULY 2019 21 PHASE 2: AUGUST-OCTOBER 2019 23 PHASE 3: NOVEMBER 2019-FEBRUARY 2020 23 STAKEHOLDER AND PARTNERSHIP MANAGEMENT 25 INCIDENT MANAGEMENT 27 SECTION III: ASSESSING AND COMMUNICATING VALUE 29 HEALTH IMPACT ANALYSIS 30 CARGO DATA 33 SAMPLE TURNAROUND TIME 34 SAMPLE COLLECTIONS 35 COMMUNICATING VALUE 36 COST CONSIDERATIONS 37 ACKNOWLEDGEMENTS 39 ANNEX 1. RESULTS FRAMEWORK 40 ANNEX 2. FLIGHT DATA REQUIREMENTS 42 ANNEX 3. UAV PROCUREMENT GUIDE 43 ANNEX 4. MEDICINE DELIVERIES MISSION NOTES 48 ANNEX 5. SAMPLE INITIAL SCOPE OF WORK FOR DRONE SERVICE PROVIDER 49 INTRODUCTION The USAID Global Health Supply Chain Program-Procurement and Supply Management (USAID GHSC- PSM) project works to ensure an uninterrupted supply of public health commodities. Through procurement and delivery of medicines and in-country technical assistance, the project strengthens health supply chains for HIV/AIDS, malaria, family planning, and maternal, newborn, and child health. -
Isotopic Reconstruction of the African Humid Period and Congo Air Boundary Migration at Lake Tana, Ethiopia
Quaternary Science Reviews 83 (2014) 58e67 Contents lists available at ScienceDirect Quaternary Science Reviews journal homepage: www.elsevier.com/locate/quascirev Isotopic reconstruction of the African Humid Period and Congo Air Boundary migration at Lake Tana, Ethiopia Kassandra Costa a,c,*, James Russell a,*, Bronwen Konecky a,d, Henry Lamb b a Department of Geological Sciences, Brown University, Box 1846, Providence, RI 02912, USA b Institute of Geography and Earth Sciences, University of Wales, Aberystwyth SY23 3DB, UK c Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, NY 10964, USA d School of Earth & Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0340, USA article info abstract Article history: The African Humid Period of the early to mid-Holocene (12,000e5000 years ago) had dramatic ecological Received 7 June 2013 and societal consequences, including the expansion of vegetation and civilization into the “green Sahara.” Received in revised form While the humid period itself is well documented throughout northern and equatorial Africa, mecha- 9 October 2013 nisms behind observed regional variability in the timing and magnitude of the humid period remain Accepted 28 October 2013 disputed. This paper presents a new hydrogen isotope record from leaf waxes (dD ) in a 15,000-year Available online wax sediment core from Lake Tana, Ethiopia (12N, 37E) to provide insight into the timing, duration, and intensity of the African Humid Period over northeastern Africa. dDwax at Lake Tana ranges between Keywords: À & À & Tropical paleoclimate 80 and 170 , with an abrupt transition from D-enriched to D-depleted waxes between 13,000 e e East Africa 11,500 years before present (13 11.5 ka). -
Waxing and Waning of Forests: Late Quaternary Biogeography of Southeast Africa
Received: 12 October 2017 | Revised: 5 March 2018 | Accepted: 9 March 2018 DOI: 10.1111/gcb.14150 PRIMARY RESEARCH ARTICLE Waxing and waning of forests: Late Quaternary biogeography of southeast Africa Sarah J. Ivory1,2 | Anne-Marie Lezine 3 | Annie Vincens4 | Andrew S. Cohen5 1Department of Anthropology, Ohio State University, Columbus, OH, USA Abstract 2Department of Geosciences, Penn State African ecosystems are at great risk. Despite their ecological and economic impor- University, State College, PA, USA tance, long-standing ideas about African forest ecology and biogeography, such as 3LOCEAN, CNRS, Paris, France the timing of changes in forest extent and the importance of disturbance, have been 4CEREGE, CNRS, Aix-en-Provence, France 5Department of Geosciences, University of unable to be tested due to a lack of sufficiently long records. Here, we present the Arizona, Tucson, AZ, USA longest continuous terrestrial record of late Quaternary vegetation from southern Correspondence Africa collected to date from a drill core from Lake Malawi covering the last Sarah J. Ivory, Department of Geosciences, ~600,000 years. Pollen analysis permits us to investigate changes in vegetation Penn State University, State College, PA, USA. structure and composition over multiple climatic transitions. We observe nine Email: [email protected] phases of forest expansion and collapse related to regional hydroclimate change. Funding information The development of desert, steppe and grassland vegetation during arid periods is US National Science Foundation–Earth likely dynamically linked to thresholds in regional hydrology associated with lake System History Program, Grant/Award Number: EAR-0602350; International level and moisture recycling. Species composition of these dryland ecosystems Continental Scientific Drilling Program; varied greatly and is unlike the vegetation found at Malawi today, with assemblages National Science Foundation Graduate Research Fellowship, Grant/Award Number: suggesting strong Somali-Masai affinities. -
Schistosomiasis in Lake Malaŵi and the Potential Use of Indigenous Fish for Biological Control
6 Schistosomiasis in Lake Malaŵi and the Potential Use of Indigenous Fish for Biological Control Jay R. Stauffer, Jr.1 and Henry Madsen2 1School of Forest Resources, Penn State University, University Park, PA 2DBL Centre for Health Research and Development, Faculty of Life Sciences, University of Copenhagen, Frederiksberg 1USA 2Denmark 1. Introduction Schistosomiasis is a parasitic disease of major public health importance in many countries in Africa, Asia, and South America, with an estimated 200 million people infected worldwide (World Health Organization, 2002). The disease is caused by trematodes of the genus Schistosoma that require specific freshwater snail species to complete their life cycles (Fig. 1). People contract schistosomiasis when they come in contact with water containing the infective larval stage (cercariae) of the trematode. Fig. 1. Life cycle of schistosomes (Source: CDC/Alexander J. da Silva, PhD/Melanie Moser) www.intechopen.com 120 Schistosomiasis Schistosome transmission, Schistosoma haematobium, is a major public health concern in the Cape Maclear area of Lake Malaŵi (Fig. 2), because the disease poses a great problem for local people and reduces revenue from tourism. Until the mid-1980’s, the open shores of Lake Malaŵi were considered free from human schistosomes (Evans, 1975; Stauffer et al., 1997); thus, only within relatively protected areas of the lake or tributaries would transmission take place. These areas were suitable habitat of intermediate host snail, Bulinus globosus. During mid-1980’s, reports indicated that transmission also occurred along open shorelines. It is now evident that in the southern part of the lake, especially Cape Maclear on Nankumba Peninsula, transmission occurs along exposed shorelines with sandy sediment devoid of aquatic plants via another intermediate host, Bulinus nyassanus (Madsen et al., 2001, 2004). -
Impact of Indoor Residual Spraying with Lambda-Cyhalothrin On
Am. J. Trop. Med. Hyg., 86(6), 2012, pp. 997–1004 doi:10.4269/ajtmh.2012.11-0621 Copyright © 2012 by The American Society of Tropical Medicine and Hygiene Impact of Indoor Residual Spraying with Lambda-Cyhalothrin on Malaria Parasitemia and Anemia Prevalence among Children Less than Five Years of Age in an Area of Intense, Year-Round Transmission in Malawi Jacek Skarbinski,* Dyson Mwandama, Adam Wolkon, Madalitso Luka, James Jafali, Alison Smith, Themba Mzilahowa, John Gimnig, Carl Campbell, John Chiphwanya, Doreen Ali, and Don P. Mathanga Malaria Branch, and Entomology Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia; Malaria Alert Centre, and Department of Community Health, College of Medicine, Blantyre, Malawi; Center for Tropical and Global Emerging Diseases, University of Georgia, Athens, Georgia; National Malaria Control Programme, Ministry of Health, Lilongwe, Malawi Abstract. Little is known about the impact of indoor residual spraying (IRS) in areas with intense malaria transmis- sion such as sub-Saharan Africa. In Malawi, IRS with lambda-cyhalothrin has been applied annually in an area of intense year-long transmission since 2007. We evaluated the impact of IRS on parasitemia and anemia prevalence in children less than five years of age by using a cross-sectional household survey conducted in 2009, six months after the second IRS spray round. We measured malaria parasitemia and anemia (hemoglobin level < 11 g/dL) in 899 children less than five years of age and used binomial regression to assess the impact of IRS by comparing children living in a household sprayed with IRS (direct IRS) with those in a household not sprayed with IRS, but in an IRS area (indirect IRS) and those living in a household not sprayed with IRS and not in an IRS area (no IRS). -
Rift-Valley-1.Pdf
R E S O U R C E L I B R A R Y E N C Y C L O P E D I C E N T RY Rift Valley A rift valley is a lowland region that forms where Earth’s tectonic plates move apart, or rift. G R A D E S 6 - 12+ S U B J E C T S Earth Science, Geology, Geography, Physical Geography C O N T E N T S 9 Images For the complete encyclopedic entry with media resources, visit: http://www.nationalgeographic.org/encyclopedia/rift-valley/ A rift valley is a lowland region that forms where Earth’s tectonic plates move apart, or rift. Rift valleys are found both on land and at the bottom of the ocean, where they are created by the process of seafloor spreading. Rift valleys differ from river valleys and glacial valleys in that they are created by tectonic activity and not the process of erosion. Tectonic plates are huge, rocky slabs of Earth's lithosphere—its crust and upper mantle. Tectonic plates are constantly in motion—shifting against each other in fault zones, falling beneath one another in a process called subduction, crashing against one another at convergent plate boundaries, and tearing apart from each other at divergent plate boundaries. Many rift valleys are part of “triple junctions,” a type of divergent boundary where three tectonic plates meet at about 120° angles. Two arms of the triple junction can split to form an entire ocean. The third, “failed rift” or aulacogen, may become a rift valley. -
The Malawi Military
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/274713580 Civil Military Relations in Malawi - Historical Context and Contemporary Dilemmas Article · January 1997 CITATIONS READS 3 1,314 1 author: Andrew Charman Sustainable Livelihoods Foundation 45 PUBLICATIONS 278 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Informality and urban democracy View project All content following this page was uploaded by Andrew Charman on 10 April 2015. The user has requested enhancement of the downloaded file. 1 CIVIL-MILITARY RELATIONS IN MALAWI: HISTORICAL CONTEXT AND CONTEMPORARY DILEMMAS Note: A version of this paper was prepared for the Centre for Conflict Resolution, University of Cape Town, as a Working Paper (1997). To my knowledge, this working paper was never actually published. AJE Charman1 Unlike most southern African post-colonial military institutions, the Malawi Army had not, prior to entering the Mozambican civil war in 1986, captured much international attention. Since independence in 1964, it had been positioned on the margins within the state security establishment, kept numerically ‘small’ and denied significant investment in training and modern weaponry. By contrast, the ruling Malawi Congress Party’s para- military organisation, the Malawi Young Pioneers (MYP), was institutionalised and afforded extra-ordinary powers within the security establishment. From the mid 1980s, the army was moved strategically closer to the centre stage occupied by the MYP and security police. This paper will argue that this shift was initiated partly in response to the changing regional geo-political dynamics after the establishment of the SADCC in 1980, but was also a move by President H K Banda to counteract powerful elements within the ruling party who had launched an internal struggle to succeed his rule. -
The Structure of Sexual Networks and the Spread of HIV in Sub-Saharan Africa: Evidence from Likoma Island (Malawi)
The structure of sexual networks and the spread of HIV in Sub-Saharan Africa: evidence from Likoma island (Malawi) Stéphane Helleringer Hans-Peter Kohler Department of Sociology Population Studies Center University of Pennsylvania It is widely believed that the HIV epidemic in Sub-Saharan Africa (SSA) is driven by transmission during unprotected heterosexual intercourse. In particular, infection with HIV in SSA is thought to be fueled by repeated contacts with sex workers or other highly sexually active group, and subsequently diffused to the general population through links of marriage or other stable types of partnerships. Such a theoretical model of sexual mixing has informed many policy simulations of interventions to stem the spread of the disease (see Oster 2005). However, empirical evidence for this diffusion process (i.e. from a group of highly active individuals to a low activity “periphery”) is somewhat scarce as epidemiological studies have generally reported weaker than expected relations between measures of such sexual behavior and risk/prevalence of HIV infection. At the individual level, differences in the rate of sexual partner acquisition only marginally predict an increased risk of infection for both prevalent (e.g. Gregson et al. 2002) and incident cases (e.g. Quigley et al. 2000). Similarly, at the population level, several comparative studies of the factors of HIV infection have found that differences in the prevalence of risky behaviors (high rate of partner change, contacts with sex workers etc.) could not explain the “uneven spread” of HIV across regions of SSA (Boerma et al. 2003). These discrepancies between indicators of sexual activity and prevalence/risk of HIV have been primarily attributed to two factors: reporting bias and differential mortality of HIV- infected individuals.