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2 resultados encontrados para: AUTOR: Olson, Ken E.
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1.
Artículo
Pangolins in global camera trap data: implications for ecological monitoring
Khwaja, Hannah (autora) ; Buchan, Claire (autora) ; Wearn, Oliver R. (autor) ; Bahaa el din, Laila (autora) ; Bantlin, Drew (autor) ; Bernard, Henry (autor) ; Bitariho, Robert (autor) ; Van der Weyde, Leanne K. (autora) ; Bohm, Torsten (autor) ; Borah, Jimmy (autor) ; Brodie, Jedediah (autor) ; Chutipong, Wanlop (autor) ; Preez, Byron du (autor) ; Ebang Mbele, Alex (autor) ; Edwards, Sarah (autora) ; Fairet, Emilie (autora) ; Frechette, Jackson L. (autor) ; Garside, Adrian (autor) ; Gibson, Luke (autor) ; Giordano, Anthony (autor) ; Veeraswami Gopi, Govindan (autor) ; Granados, Alys (autora) ; Gubbi, Sanjay (autor) ; Harich, Franziska (autora) ; Haurez, Barbara (autora) ; Havmøller, Rasmus W. (autor) ; Helmy, Olga (autora) ; Isbell, Lynne A. (autora) ; Jenks, Kate (autora) ; Kalle, Riddhika (autora) ; Kamjing, Anucha (autor) ; Khamcha, Daphawan (autora) ; Kiebou Opepa, Cisquet (autor) ; Kinnaird, Margaret (autora) ; Kruger, Caroline (autora) ; Laudisoit, Anne (autora) ; Lynam, Antony (autor) ; Macdonald, Suzanne E. (autora) ; Mathai, John (autor) ; Metsio Sienne, Julia (autora) ; Meier, Amelia (autora) ; Mills, David (autor) ; Mohd Azlan, Jayasilan (autor) ; Nakashima, Yoshihiro (autor) ; Nash, Helen C. (autora) ; Ngoprasert, Dusit (autor) ; Nguyen, An (autora) ; O’Brien, Tim (autor) ; Olson, David (autor) ; Orbell, Christopher (autor) ; Poulsen, John (autor) ; Ramesh, Tharmalingam (autor) ; Reeder, DeeAnn (autora) ; Reyna Hurtado, Rafael Ángel (autor) ; Rich, Lindsey N. (autora) ; Rode Margono, Johanna (autora) ; Rovero, Francesco (autor) ; Sheil, Douglas (autor) ; Shirley, Matthew H. (autor) ; Stratford, Ken (autor) ; Sukumal, Niti (autor) ; Suwanrat, Saranphat (autora) ; Tantipisanuh, Naruemon (autora) ; Tilker, Andrew (autor) ; Van Berkel, Tim (autor) ; Van der Weyde, Leanne K. (autora) ; Varney, Matthew (autor) ; Weise, Florian (autora) ; Wiesel, Ingrid (autora) ; Wilting, Andreas (autora) ; Wong, Seth T. (autor) ; Waterman, Carly (autora) ; Challender, Daniel W. S. (autor) ;
Contenido en: Global Ecology and Conservation Vol. 20, e00769 (2019), p. 1-14 ISSN: 2351-9894
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Resumen en: Inglés |
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Despite being heavily exploited, pangolins (Pholidota: Manidae) have been subject tolimited research, resulting in a lack of reliable population estimates and standardised survey methods for the eight extant species. Camera trapping represents a unique opportunity for broad-scale collaborative species monitoring due to its largely nondiscriminatory nature, which creates considerable volumes of data on a relatively widerange of species. This has the potential to shed light on the ecology of rare, cryptic and understudied taxa, with implications for conservation decision-making. We undertook aglobal analysis of available pangolin data from camera trapping studies across their rangein Africa and Asia. Our aims were (1) to assess the utility of existing camera trapping efforts as a method for monitoring pangolin populations, and (2) to gain insights into the distribution and ecology of pangolins. We analysed data collated from 103 camera trap surveys undertaken across 22 countries that fell within the range of seven of the eight pangolin species, which yielded more than half a million trap nights and 888 pangolin encounters. We ran occupancy analyses on three species (Sunda pangolin Manis javanica, white-bellied pangolin Phataginus tricuspisand giant pangolin Smutsia gigantea).

Detection probabilities varied with forest cover and levels of human influence for P. tricuspis, but were low (<0.05) for all species. Occupancy was associated with distance from rivers for M. javanica and S. gigantea, elevation for P. tricuspis and S. gigantea, forest cover forP. tricuspisand protected area status for M. javanica and P. tricuspis. We conclude that camera traps are suitable for the detection of pangolins and large-scale assessment of their distributions. However, the trapping effort required to monitor populations at any given study site using existing methods appears prohibitively high. This may change in the future should anticipated technological and methodological advances in camera trapping facilitate greater sampling efforts and/or higher probabilities of detection. In particular, targeted camera placement for pangolins is likely to make pangolin monitoring more feasible with moderate sampling efforts.


2.
Artículo
*En hemeroteca, SIBE-San Cristóbal
Genetic variation within the premembrane coding region of dengue viruses from the Yucatan Peninsula of Mexico
Díaz, Francisco J. ; Farfán Ale, José A. (coaut.) ; Olson, Ken E. (coaut.) ; Loroño Pino, María Alba (coaut.) ;
Contenido en: The American Journal of Tropical Medicine and Hygiene Vol. 67, no. 1 (July 2002), p. 93-101 ISSN: 0002-9637
Nota: En hemeroteca, SIBE-San Cristóbal
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Resumen en: Inglés |
Resumen en inglés

ingle-strand conformation polymorphism (SSCP) and sequence analyses were used to characterize genetic polymorphisms and phylogenetic relationships, respectively, among dengue (DEN) viruses isolated between 1980 and 1997 from Yucatan, Mexico and surrounding states. Amplified cDNAs from the premembrane (prM) coding region of the DEN viruses were characterized by SSCP. There were six distinct haplotypes of DEN-1 viruses, four haplotypes of DEN-2, four haplotypes of DEN-3, and eight haplotypes of DEN-4. The diversity index for DEN-3 isolates was significantly lower than that of the other serotypes, probably reflecting the recent introduction of this viral serotype into Mexico. The SSCP was a sensitive (84.5%) and specific (95.5%) technique for identifying nucleotide substitutions. Sequence analyses provided insight into the phylogenetic relationships of the DEN strains isolated in Yucatan. One DEN-2 isolate from 1996 was demonstrated to cluster with viruses of the Sri Lanka genotype, none of which have been detected before in the Americas.