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What Is Driving Declines of Montane Endemic Amphibians? New Insights from Mount Bamboutos, Cameroon
What is driving declines of montane endemic amphibians? New insights from Mount Bamboutos, Cameroon A. M. TCHASSEM F., T. M. DOHERTY-B ONE,M.M.KAMENI N. W. P. TAPONDJOU N.,J.L.TAMESSE and L . N . G ONWOUO Abstract Amphibians on African mountains are threatened Preserving a network of connected forest patches is there- by habitat loss and fragmentation, pollution, disease and fore critical to save the endemic amphibians of Mount climate change. In particular, there have been recent reports Bamboutos. of declines of montane endemic frogs in Cameroon. Mount Keywords Africa, amphibians, anurans, Cameroon, caeci- Bamboutos, although home to numerous species of endemic lians, endemic species, forest degradation, mountains amphibians, has no official protection and its amphibian populations have so far not been studied quantitatively. Supplementary material for this article is available at We surveyed frog assemblages on this mountain along a https://doi.org/./S gradient of forest modification over a -year period. Through visual encounter surveys stratified across forest and farm- land, we found that threatened montane amphibian species Introduction are closely associated with forested areas, particularly the Critically Endangered Leptodactylodon axillaris and mphibians are threatened globally, with over one-third Endangered Leptodactylodon perreti, Astylosternus ranoides Aof all known species at risk of extinction and half show- and Cardioglossa oreas. Using the updated inventory of ing population declines (Stuart et al., ; IUCN, ). amphibians, which includes species with broader ranges Threats include habitat alteration, loss and fragmenta- across Africa, we found % of amphibian species on tion, pollution, overexploitation, disease, invasive species, Mount Bamboutos to be threatened. We did not record climate change and combinations of these factors (Beebee several species present in historical records, which suggests & Griffiths, ). -
Amphibians and Reptiles of a Proposed Iron Ore Mining Concession in Southern Cameroon
Herpetology Notes, volume 14: 1051-1065 (2021) (published online on 09 August 2021) Amphibians and reptiles of a proposed iron ore mining concession in southern Cameroon Nono L. Gonwouo1,*, Arnaud M.F. Tchassem1, Thomas M. Doherty-Bone2,3, and Mark-Oliver Rödel4 Abstract. We present a checklist of amphibian and reptile species that occur in the Ntem Iron ore mining concession in southern Cameroon, compiled as part of a broader biodiversity impact survey during a two-week herpetofaunal survey. Visual and acoustic encounter surveys were carried out during day and night, covering the entire area of mining exploration. We document the presence of 38 amphibian and 28 reptile species. The most notable observation was a 150-km southward range extension of Didynamipus sjostedti. Other species of conservation concern include Conraua goliath, Leptodactylodon albiventris, L. ventrimarmoratus, Osteolaemus tetraspis, Varanus niloticus, and Kinixys erosa. These and numerous other forest-dwelling species indicate the intact nature of herpetofauna forest assemblages at the study sites. Efforts to conserve the herpetofauna at these sites should focus on protecting and monitoring the intact forest corridors linking the concession to a neighbouring forest reserve, as well as plans for restoration once extraction is completed. Keywords. Species richness, habitat, fragmentation, management, rainforest Introduction influenced by microclimate, such as temperature and humidity, as well as by the presence of microhabitats (e.g., Anthropogenic habitat change is a major factor driving forest leaf litter; Wake, 1991; Blaustein et al., 1994; Ernst species and population declines (Stuart et al., 2004; et al., 2006), making them vulnerable to forest alteration Reading et al., 2010; Böhm et al., 2013; Pimm et al., and clearance (Ernst and Rödel, 2005; Ernst et al., 2006; 2014), and it has been identified as a primary threat to Barrett and Guyer, 2008). -
Miocene Plio-Pleistocene Oligocene Eocene Paleocene Cretaceous
Phrynomantis microps Hemisus sudanensis Hemisus marmoratus Balebreviceps hillmani Breviceps mossambicus Breviceps adspersus Breviceps montanus Breviceps fuscus Breviceps gibbosus Breviceps macrops Breviceps namaquensis Breviceps branchi Spelaeophryne methneri Probreviceps loveridgei Probreviceps uluguruensis Probreviceps durirostris Probreviceps sp. Nguru Probreviceps sp. Rubeho Probreviceps sp. Kigogo Probreviceps sp. Udzungwa Probreviceps rungwensis Probreviceps macrodactylus Callulina shengena Callulina laphami Callulina dawida Callulina kanga Callulina sp lowland Callulina sp Rubeho Callulina hanseni Callulina meteora Callulina stanleyi Callulina kisiwamsitu Callulina kreffti Nyctibates corrugatus Scotobleps gabonicus Astylosternus laticephalus Astylosternus occidentalis Trichobatrachus robustus Astylosternus diadematus Astylosternus schioetzi Astylosternus batesi Leptodactylodon mertensi Leptodactylodon erythrogaster Leptodactylodon perreti Leptodactylodon axillaris Leptodactylodon polyacanthus Leptodactylodon bicolor Leptodactylodon bueanus Leptodactylodon ornatus Leptodactylodon boulengeri Leptodactylodon ventrimarmoratus Leptodactylodon ovatus Leptopelis parkeri Leptopelis macrotis Leptopelis millsoni Leptopelis rufus Leptopelis argenteus Leptopelis yaldeni Leptopelis vannutellii Leptopelis susanae Leptopelis gramineus Leptopelis kivuensis Leptopelis ocellatus Leptopelis spiritusnoctis Leptopelis viridis Leptopelis aubryi Leptopelis natalensis Leptopelis palmatus Leptopelis calcaratus Leptopelis brevirostris Leptopelis notatus -
Africa's Gulf of Guinea Forests: Biodiversity Patterns and Conservation Priorities
Advances in Applied Biodiversity Science, no. 6 AABSAdvances in Applied Biodiversity Science Number 6 Africa’s Gulf of Guinea Forests: Africa’s Gulf of Guinea Forests:Biodiversity Patterns and Conservation Africa’s Biodiversity Patterns and Conservation Priorities John F. Oates, Richard A. Bergl, and Joshua M. Linder Priorities C Conservation International ONSERVATION 1919 M Street, NW, Suite 600 Washington, DC 20036 TEL: 202-912-1000 FAX: 202-912-0772 I NTERNATIONAL ISBN 1-881173-82-8 WEB: www.conservation.org 9 0 0 0 0> www.biodiversityscience.org 9781881173823 About the Authors John F. Oates is a CABS Research Fellow, Professor of Anthropology at Hunter College, City University of New York (CUNY), and a Senior Conservation Advisor to the Africa program of the Wildlife Conservation Society (WCS). He is cur- rently advising WCS on biodiversity conservation projects in eastern Nigeria and western Cameroon. Dr. Oates has conducted research on the ecology of forest primates in Africa and Asia since 1966, and has assisted with the development of rainforest protected areas in South India and West Africa. He has published extensively on primate biology and conservation and, as an active member of the IUCN-SSC Primate Specialist Group, has compiled conservation action plans for African primates. He holds a PhD from the University of London. Richard A. Bergl is a doctoral student in anthropology at the CUNY Graduate Center, in the graduate training program of the New York Consortium in Evolutionary Primatology (NYCEP). He is currently conducting research into the population and habitat viability of the Cross River gorilla (Gorilla gorilla diehli) in Nigeria and Cameroon. -
Arthroleptis) and Long-fingered Frogs (Cardioglossa) Estimated from Mitochondrial Data
Molecular Phylogenetics and Evolution 49 (2008) 806–826 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Biogeography and evolution of body size and life history of African frogs: Phylogeny of squeakers (Arthroleptis) and long-fingered frogs (Cardioglossa) estimated from mitochondrial data David C. Blackburn 1 Museum of Comparative Zoology, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA article info abstract Article history: The evolutionary history of living African amphibians remains poorly understood. This study estimates Received 7 March 2008 the phylogeny within the frog genera Arthroleptis and Cardioglossa using approximately 2400 bases of Revised 11 August 2008 mtDNA sequence data (12S, tRNA-Valine, and 16S genes) from half of the described species. Analyses Accepted 14 August 2008 are conducted using parsimony, maximum likelihood, and Bayesian methods. The effect of alignment Available online 30 August 2008 on phylogeny estimation is explored by separately analyzing alignments generated with different gap costs and a consensus alignment. The consensus alignment results in species paraphyly, low nodal sup- Keywords: port, and incongruence with the results based on other alignments, which produced largely similar Ancestral state reconstruction results. Most nodes in the phylogeny are highly supported, yet several topologies are inconsistent with Arthroleptidae Character evolution previous hypotheses. The monophyly of Cardioglossa and of miniature species previously assigned to Cryptic species Schoutedenella was further examined using Templeton and Shimodaira–Hasegawa tests. Cardioglossa Direct development monophyly is rejected and C. aureoli is transferred to Arthroleptis. These tests do not reject Schoutedenella Miniaturization monophyly, but this hypothesis receives no support from non-parametric bootstrapping or Bayesian pos- Schoutedenella terior probabilities. -
2008 Board of Governors Report
American Society of Ichthyologists and Herpetologists Board of Governors Meeting Le Centre Sheraton Montréal Hotel Montréal, Quebec, Canada 23 July 2008 Maureen A. Donnelly Secretary Florida International University Biological Sciences 11200 SW 8th St. - OE 167 Miami, FL 33199 [email protected] 305.348.1235 31 May 2008 The ASIH Board of Governor's is scheduled to meet on Wednesday, 23 July 2008 from 1700- 1900 h in Salon A&B in the Le Centre Sheraton, Montréal Hotel. President Mushinsky plans to move blanket acceptance of all reports included in this book. Items that a governor wishes to discuss will be exempted from the motion for blanket acceptance and will be acted upon individually. We will cover the proposed consititutional changes following discussion of reports. Please remember to bring this booklet with you to the meeting. I will bring a few extra copies to Montreal. Please contact me directly (email is best - [email protected]) with any questions you may have. Please notify me if you will not be able to attend the meeting so I can share your regrets with the Governors. I will leave for Montréal on 20 July 2008 so try to contact me before that date if possible. I will arrive late on the afternoon of 22 July 2008. The Annual Business Meeting will be held on Sunday 27 July 2005 from 1800-2000 h in Salon A&C. Please plan to attend the BOG meeting and Annual Business Meeting. I look forward to seeing you in Montréal. Sincerely, Maureen A. Donnelly ASIH Secretary 1 ASIH BOARD OF GOVERNORS 2008 Past Presidents Executive Elected Officers Committee (not on EXEC) Atz, J.W. -
3Systematics and Diversity of Extant Amphibians
Systematics and Diversity of 3 Extant Amphibians he three extant lissamphibian lineages (hereafter amples of classic systematics papers. We present widely referred to by the more common term amphibians) used common names of groups in addition to scientifi c Tare descendants of a common ancestor that lived names, noting also that herpetologists colloquially refer during (or soon after) the Late Carboniferous. Since the to most clades by their scientifi c name (e.g., ranids, am- three lineages diverged, each has evolved unique fea- bystomatids, typhlonectids). tures that defi ne the group; however, salamanders, frogs, A total of 7,303 species of amphibians are recognized and caecelians also share many traits that are evidence and new species—primarily tropical frogs and salaman- of their common ancestry. Two of the most defi nitive of ders—continue to be described. Frogs are far more di- these traits are: verse than salamanders and caecelians combined; more than 6,400 (~88%) of extant amphibian species are frogs, 1. Nearly all amphibians have complex life histories. almost 25% of which have been described in the past Most species undergo metamorphosis from an 15 years. Salamanders comprise more than 660 species, aquatic larva to a terrestrial adult, and even spe- and there are 200 species of caecilians. Amphibian diver- cies that lay terrestrial eggs require moist nest sity is not evenly distributed within families. For example, sites to prevent desiccation. Thus, regardless of more than 65% of extant salamanders are in the family the habitat of the adult, all species of amphibians Plethodontidae, and more than 50% of all frogs are in just are fundamentally tied to water. -
FROGLOG Newsletter of the IUCN /SSC Amphibian Specialist Group (ASG)
Pyxicephalus adspersus byTim Halliday ISSN 1026-0269 FROGLOG Newsletter of the IUCN /SSC Amphibian Specialist Group (ASG) February 2007, Number 79 to cause mass mortality. Kevin but is under continuous threat from Amphibian Declines in Africa Smith reported studies of stream a variety of factors, including water By Tim Halliday frogs in the Drakensburg extraction and climate change. The 8th meeting of the where mortality does occur, at Because its tadpoles take more Herpetological Association of higher altitudes, in Strongylopus than a year to reach metamorpho- Africa (HAA) was held in hymenopus, but the impact of this sis, it is very dependent on Potchefstroom, South Africa from on populations is not yet clear. perennial streams. John Measey 24 to 27 November, 2006. The He also reported that chytrid- described his work on the meeting, sponsored by the DAPTF, infected tadpoles of Heleophryne landscape genetics of the Kenyan was organised by Louis du Preez. natalensis develop distinctive frog Schoutedenella xenodacty- It provided a very interesting markings around their mouthparts; loides which, surprisingly, suggests overview of work on amphibians no mass mortality in this species that this tiny frog can disperse long currently going on in southern has been observed. distances across unsuitable dry Africa, including a number of The African bullfrog savannah. projects funded by the DAPTF. Pyxicephalus adspersus is Ernst Baard reported on recent In a workshop on amphibian threatened by accelerating habitat changes in legislation and policy in declines, Les Minter reviewed the loss in many parts of its range; South Africa with regard to status of southern African while many breeding sites are protected, threatened, alien and amphibians; 20 endemic species protected, less attention has been invasive species, and was are endangered, and habitat paid to its terrestrial habitat. -
1704632114.Full.Pdf
Phylogenomics reveals rapid, simultaneous PNAS PLUS diversification of three major clades of Gondwanan frogs at the Cretaceous–Paleogene boundary Yan-Jie Fenga, David C. Blackburnb, Dan Lianga, David M. Hillisc, David B. Waked,1, David C. Cannatellac,1, and Peng Zhanga,1 aState Key Laboratory of Biocontrol, College of Ecology and Evolution, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China; bDepartment of Natural History, Florida Museum of Natural History, University of Florida, Gainesville, FL 32611; cDepartment of Integrative Biology and Biodiversity Collections, University of Texas, Austin, TX 78712; and dMuseum of Vertebrate Zoology and Department of Integrative Biology, University of California, Berkeley, CA 94720 Contributed by David B. Wake, June 2, 2017 (sent for review March 22, 2017; reviewed by S. Blair Hedges and Jonathan B. Losos) Frogs (Anura) are one of the most diverse groups of vertebrates The poor resolution for many nodes in anuran phylogeny is and comprise nearly 90% of living amphibian species. Their world- likely a result of the small number of molecular markers tra- wide distribution and diverse biology make them well-suited for ditionally used for these analyses. Previous large-scale studies assessing fundamental questions in evolution, ecology, and conser- used 6 genes (∼4,700 nt) (4), 5 genes (∼3,800 nt) (5), 12 genes vation. However, despite their scientific importance, the evolutionary (6) with ∼12,000 nt of GenBank data (but with ∼80% missing history and tempo of frog diversification remain poorly understood. data), and whole mitochondrial genomes (∼11,000 nt) (7). In By using a molecular dataset of unprecedented size, including 88-kb the larger datasets (e.g., ref. -
A New Large Tree Frog from North-Western Gabon (Hyperoliidae: Leptopelis)
HERPETOLOGICAL JOURNAL, Vol. 15, pp. 149-152 (2005) A NEW LARGE TREE FROG FROM NORTH-WESTERN GABON (HYPEROLIIDAE: LEPTOPELIS) S. LÖTTERS1, M.-O. RÖDEL2 AND M. BURGER3 1Zoological Institute, Department of Ecology, Mainz University, Germany 2Department of Animal Ecology and Tropical Biology, Biocenter, Würzburg University, Germany 3Zoology Department, University of the Western Cape, South Africa A new large, green species of Leptopelis from the Monts de Cristal, north-western Gabon, is described. It is similar to the sympatric L. brevirostris. The most striking character to distinguish these two taxa is the absence of a tympanum in the new species in contrast to the presence of a tympanum in L. brevirostris. Key words: Africa, Anura, Leptopelis brevirostris, systematics INTRODUCTION well as to examine if a tympanum is hidden behind Little is known about the amphibians from most parts thickened skin, the holotype was dissected. We took of western Central Africa (Poynton, 1999). Field surveys measurements with dial callipers (± 0.1 mm). The by different workers at the Monts de Cristal, north-west- snout-vent length is abbreviated SVL. Drawings were ern Gabon, revealed several new country records and done with the aid of a camera lucida, attached to a dis- species new to science. Currently, we are aware of about secting microscope (Zeiss Stemi SV 6). Webbing 50 species of anurans from this region (Lötters et al., formulae follow the system used by Glaw & Vences 2001; Rödel & Pauwels, 2003; unpubl. data). The genus (1994). Leptopelis Günther, 1859 contains 49 recognized spe- A finger tip was removed as a tissue sample and used cies, spread out through most of sub-Saharan Africa as to sequence a 500 bp fragment of mitochondrial DNA, far south as the eastern Cape Province in South Africa using the gene 16S rRNA gene. -
A Survey of Amphibians and Reptiles in the Foothills of Mount Kupe, Cameroon
Official journal website: Amphibian & Reptile Conservation amphibian-reptile-conservation.org 10(2) [Special Section]: 37–67 (e131). A survey of amphibians and reptiles in the foothills of Mount Kupe, Cameroon 1,2Daniel M. Portik, 3,4Gregory F.M. Jongsma, 3Marcel T. Kouete, 3Lauren A. Scheinberg, 3Brian Freiermuth, 5,6Walter P. Tapondjou, and 3,4David C. Blackburn 1Museum of Vertebrate Zoology, University of California, Berkeley, 3101 Valley Life Sciences Building, Berkeley, California 94720, USA 2Department of Biology, University of Texas at Arlington, 501 S. Nedderman Drive, Box 19498, Arlington, Texas 76019-0498, USA 3California Academy of Sciences, San Francisco, California 94118, USA 4Florida Museum of Natural History, University of Florida, Gainesville, Florida 32611, USA 5Laboratory of Zoology, Faculty of Science. University of Yaoundé, PO Box 812 Yaoundé, Cameroon, AFRICA 6Department of Ecology and Evolutionary Biology, University of Kansas, 1450 Jayhawk Boulevard, Lawrence, Kansas 66045, USA Abstract.—We performed surveys at several lower elevation sites surrounding Mt. Kupe, a mountain at the southern edge of the Cameroonian Highlands. This work resulted in the sampling of 48 species, including 38 amphibian and 10 reptile species. By combining our data with prior survey results from higher elevation zones, we produce a checklist of 108 species for the greater Mt. Kupe region including 72 frog species, 21 lizard species, and 15 species of snakes. Our work adds 30 species of frogs at lower elevations, many of which are associated with breeding in pools or ponds that are absent from the slopes of Mt. Kupe. We provide taxonomic accounts, including museum specimen data and associated molecular data, for all species encountered. -
Amphibia, Anura, Arthroleptidae)
Zootaxa 3765 (1): 029–053 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2014 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3765.1.2 http://zoobank.org/urn:lsid:zoobank.org:pub:BBD41CC5-D3E4-4FEF-B06D-6977693270AE The tadpoles of nine Cameroonian Leptodactylodon species (Amphibia, Anura, Arthroleptidae) LISSA MAPOUYAT1, MAREIKE HIRSCHFELD1, MARK-OLIVER RÖDEL1,*, H. CHRISTOPH LIEDTKE2, SIMON P. LOADER2, L. NONO GONWOUO3, MATTHIAS DAHMEN1, THOMAS M. DOHERTY-BONE4,5 & MICHAEL F. BAREJ1 1Museum für Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity, Invalidenstr. 43, 10115 Berlin, Germany 2University of Basel, Department of Environmental Science (Biogeography), Klingelbergstr. 27, Basel 4056, Switzerland 3Cameroon Herpetology-Conservation Biology Foundation (CAMHERP-CBF), PO Box 8218, Yaoundé, Cameroon 4Department of Life Sciences, Natural History Museum, London SW7 5BD, United Kingdom 5School of Geography & School of Biology, University of Leeds, Leeds, LS2 9JT, United Kingdom 6Corresponding author. E-mail: [email protected] Abstract We describe and compare the tadpoles of nine Leptodactylodon species from Cameroon. The tadpoles of Leptodactylodon bicolor, L. mertensi, L. ovatus, L. perreti and L. ventrimarmoratus are herein reinvestigated, partly based on larger series than previously available. In addition we present first descriptions for the tadpoles of L. boulengeri, L. erythrogaster, L. ornatus, and L. cf. polyacanthus. The morphology of these exotrophic, lotic and neustonic tadpoles is discussed in com- parison with other stream-dwelling tadpoles. Based on the assumed biology of these tadpoles, living in interstices of gravel or debris, the functioning of several special morphological features, in particular the funnel-mouth of Leptodactylodon tadpoles, are interpreted.