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Registros recuperados: 23
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A new species of land crab, Sesarma Say, 1817 (Decapoda, Brachyura), from the Pleistocene of Jamaica Naturalis
Collins, J.S.H.; Mitchell, S.F.; Donovan, S.K..
Terrestrial arthropods are poorly known from the Cenozoic of Jamaica. A probably Late Pleistocene land crab, Sesarma primigenium sp. nov., is described from the Western Cement Company Cave, parish of St. Elizabeth, southwestern Jamaica. The same species is also tentatively recognised from the Late Pleistocene Red Hills Road Cave, parish of St. Andrew, eastern central Jamaica. The propodi of the new species are moderately globose, with an upper margin that is comparatively short and finely granulate ridged; the fingers are obscurely spooned and gaped; and the in-turned fixed finger is in line with, and a litt le shorter than, the basal margin. Of the nine extant endemic members of this subgenus in Jamaica, S. jarvisi Rathbun and S. verleyi Rathbun have...
Tipo: Article / Letter to the editor Palavras-chave: Land crabs; Sesarma; Caves; Pleistocene; Jamaica; 42.74.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/301550
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A Relative Potential Erosion Detection (PED) model for the upper Buff Bay catchment, parish of Portland, Jamaica: A Geographical Information System application Naturalis
MacGillivray, C.M.I.; Donovan, S.K..
This research introduces a Geographical Information Systems (GIS) model that predicts the location and relative susceptibility of humid subtropical hillslopes to sheetwash erosion. The extent of the erosion was based on the conservation potential of the existing vegetation cover. This is an original deductive and deterministic model (Potential Erosion Detection, PED) incorporating regionally applicable physical and land use factors thought to be influential. These were climate (agroclimatic zones), topography (aspect and slope angle), soil (texture, drainage, depth, aggregation), vegetation cover and land use (tillage activity). The study looked at surface erosion as a perceived problem in a post-colonial economy. The processes, cause and effect of...
Tipo: Article / Letter to the editor Palavras-chave: Jamaica; Buff Bay; Geographical Information Systems; IDRISI; Geomorphology; Soil; Erosion; 38.42.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/217419
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ASSESSING THE COMPETITIVENESS OF JAMAICAN ACKEE IN LIGHT OF THE CHALLENGES FACED BY SUGAR AND BANANAS AgEcon
Hyatt, Karl.
Economic theory posits that the removal of impediments to trade should redound to improvement in the overall well-being of all nations. Unfortunately, for many developing countries, this has not been the case; upon significantly reducing their tariffs, they are yet to see any tangible benefits. On the contrary, they have experienced a decline in market share and in some instances significant erosion of trade preferences that they had previously enjoyed with their trading partners. The preferential market access, from which Jamaica and other ACP (African Caribbean and Pacific) states benefit, through exports of sugar and bananas to the EU (European Union), has been eroded as a result of recent rulings by the WTO. These rulings have already affected the...
Tipo: Conference Paper or Presentation Palavras-chave: CAES; SPS measures; Globalization; Competitiveness; Jamaica; Ackee; WTO; Agribusiness; Agricultural and Food Policy; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; International Relations/Trade.
Ano: 2007 URL: http://purl.umn.edu/36947
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Cretaceous and Cenozoic decapod crustaceans of Jamaica Naturalis
Donovan, Stephen K.; Portell, Roger W.; Collins, Joe S.H..
In the last decade, a rebirth in interest of Jamaican fossil crustaceans has occurred. A summary of known material is provided together with some indications of the directions that future studies should take.
Tipo: Article / Letter to the editor Palavras-chave: Jamaica; Cretaceous; Cenozoic; Crustacea; Decapoda.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/534331
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Crustaceans of the upper Miocene August Town Formation of southeastern Jamaica Naturalis
Collins, J.S.H.; Donovan, S.K.; Stemann, T.A.; Blissett, D.J..
Crustaceans remain poorly known from the Miocene of Jamaica. Herein, we report three species from the upper Miocene August Town Formation of Fowl House Spring, parish of St. Thomas, southeast Jamaica; poorly preserved propodi of a mud shrimp, “Callianassa” sp.; the anterior part of the carapace of Mithraculus sp. aff. Mithraculus coryphe (Herbst); and the cirripede Tetraclita sp. cf. T. stalactifera (Lamarck). Mithraculus sp. aff. M. coryphe at Fowl House Spring considerably extends the stratigraphic occurrence of the genus in the Antillean region down into the Miocene. Hitherto, fossil T. stalactifera in the Caribbean was known from the Plio-Pleistocene of Curaçao and the Pleistocene of Venezuela.
Tipo: Article / Letter to the editor Palavras-chave: Jamaica; Miocene; Barnacles; Cirripedia; Crabs; Decapoda; 38.22.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/361979
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Efectividad in vitro de cepas nativas de Trichoderma spp. En aislados de Phytophthora parasítica D. Obtenidos de plantas de jamaica Colegio de Postgraduados
Esparza Luna, Linda Luz.
Se aislaron cepas nativas de Trichoderma spp. y Phytophthora parasitica en suelos cultivados con jamaica y con alta incidencia de la enfermedad “pata prieta de la jamaica”. La toma de muestras de suelo se ubicó en los municipios de Tecoanapa, Ayutla de los Libres, San Marcos y Juan R. Escudero del estado de Guerrero. Las cepas patogénicas se aislaron de tallo y raíz enfermo con síntomas evidentes de “pata prieta”. Trichoderma spp. se aisló directamente de suelo mediante el método de dilución de esporas en cajas Petri con el medio de cultivo Papa dextrosa agar. Se obtuvieron tres cepas de P. parasitica y 15 cepas de Trichoderma, correspondiendo a las siguientes especies, 8 a T. asperellum, 3 a T. harzianum, 1 a T. virens, 1 a T. inhamatum, 1 a...
Tipo: Tesis Palavras-chave: Antagonismo; Antibiosis; Trichoderma spp; Phytophthora parasitica; Jamaica antangonism; Antibiotic; Trichoderma spp.; P. parasitica; Jamaica.
Ano: 2012 URL: http://hdl.handle.net/10521/1029
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Efectividad in vitro de cepas nativas de Trichoderma spp. En aislados de Phytophthora parasítica D. Obtenidos de plantas de jamaica Colegio de Postgraduados
Esparza Luna, Linda Luz.
Se aislaron cepas nativas de Trichoderma spp. y Phytophthora parasitica en suelos cultivados con jamaica y con alta incidencia de la enfermedad “pata prieta de la jamaica”. La toma de muestras de suelo se ubicó en los municipios de Tecoanapa, Ayutla de los Libres, San Marcos y Juan R. Escudero del estado de Guerrero. Las cepas patogénicas se aislaron de tallo y raíz enfermo con síntomas evidentes de “pata prieta”. Trichoderma spp. se aisló directamente de suelo mediante el método de dilución de esporas en cajas Petri con el medio de cultivo Papa dextrosa agar. Se obtuvieron tres cepas de P. parasitica y 15 cepas de Trichoderma, correspondiendo a las siguientes especies, 8 a T. asperellum, 3 a T. harzianum, 1 a T. virens, 1 a T. inhamatum, 1 a...
Tipo: Tesis Palavras-chave: Antagonismo; Antibiosis; Trichoderma spp; Phytophthora parasitica; Jamaica; Maestría; Fitopatología; Antangonism; Antibiotic; Jamaica.
Ano: 2009 URL: http://hdl.handle.net/10521/1357
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Efecto de genotipo y ambiente en la calidad fisicoquímica de variedades mexicanas de Hibiscus sabdariffa L. Agrociencia
Sánchez-Feria,César; González-Hernández,Víctor A.; Salinas-Moreno,Yolanda; Cruz-Huerta,Nicacio.
Resumen En este estudio se evaluaron 53 genotipos de jamaica (Hibiscus sabdariffa L.), con coloración roja contrastante en sus cálices deshidratados, cada uno de ellos crecidos en una región productora de Colima, Guerrero, Nayarit, Oaxaca y Puebla, estados con tradición en el cultivo de jamaica en México. El objetivo fue cuantificar los efectos de los factores genotipo, ambiente y su interacción G×A, en las variables de color (luminosidad, tonalidad y saturación), contenido total de antocianinas (CTA), fenoles solubles totales (FST), pH y acidez titulable (AT), en cálices deshidratados y extractos acuosos. Los tres factores tuvieron efectos significativos (p≤0.01) en la calidad de los cálices y extractos de jamaica, pero el efecto del genotipo fue más...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Jamaica; Cálices; Color; Contenido total de antocianinas; Compuestos fenólicos solubles totales; Acidez titulable.
Ano: 2017 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000500525
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Etiología de la mancha acuosa de la jamaica (Hibiscus sabdariffa L.) en Tabasco, México. Colegio de Postgraduados
Correa Sánchez, Elizabeth.
El objetivo de este estudio fue identificar el agente causal de la “mancha acuosa” en jamaica (Hibiscus sabdariffa L.) y describir los síntomas externos de la enfermedad. Dos lotes de observación fueron conducidos de Julio a Noviembre de 2009, cada uno con 225 plantas de jamaica. Se colectaron muestras de hojas en 39 plantas por cada uno de los lotes establecidos. Para identificar el patógeno, los procesos de aislamientos se llevaron a cabo a partir de hojas enfermas en cajas de petri con papa-dextrosa-agar (PDA) como medio de cultivo. La patogenecidad se demostró mediante los postulados de Koch. La caracterización morfológica reveló la presencia de picnidios de forma globosa a subglobosa de 250 µm de largo x 233.1 µm de ancho, lisos, inicialmente hialinos...
Palavras-chave: Mancha acuosa; Jamaica; Caracterización molecular y morfológica; Water stain; Roselle; Molecular and morphological characterization; Maestría; Producción Agroalimentaria en el Trópico.
Ano: 2011 URL: http://hdl.handle.net/10521/441
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Fossil brachiopods from the Pleistocene of the Antilles Naturalis
Harper, D.A.T.; Donovan, S.K..
Pleistocene brachiopods are poorly known from the Antillean region, but are locally common in forereef deposits of Jamaica (lower Pleistocene Manchioneal Formation) and Barbados (Coral Rock). Of the four species known, two are new. Lacazella sp. cf. L. caribbeanensis Cooper, an encrusting thecideidean, is known from only three valves. Other species are terebratulides. Tichosina inconstanta sp. nov. is a large, ventribiconvex Tichosina species of elongate oval to tear-drop shaped outline, variably uniplicate with a pedicle foramen of moderate diameter. It differs from the similar Tichosina? bartletti (Dall) in having a larger pedicle foramen and a less-marked plication. Argyrotheca barrettiana (Davidson) is a medium to large, usually transverse Argyrotheca...
Tipo: Article / Letter to the editor Palavras-chave: Brachiopoda; Pleistocene; Systematics; Jamaica; Barbados; Antilles; 42.72; 38.22.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/314198
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Fossil Crustacea of the Late Pleistocene Port Morant Formation, west Port Morant Harbour, southeastern Jamaica Naturalis
Collins, J.S.H.; Donovan, S.K.; Stemann, T.A..
The Late Pleistocene Port Morant Formation of southeast Jamaica is particularly rich in fossil marine crustaceans. A new locality on the west side of Port Morant Harbour, parish of St. Thomas, has yielded decapods including the callianassids Lepidophthalmus jamaicense? (Schmitt ), Neocallichirus peraensis Collins et al. and Neocallichirus? sp.; anomurans Petrochirus bahamensis (Herbst) and Paguristes sp. cf. P. lymanni A. Milne-Edwards & Bouvier; and brachyurans Hepatus praecox Collins et al., Persephona sp., Mithrax acuticornis Stimpson, Mithrax verrucosus H. Milne Edwards, Mithraculus forceps A. Milne-Edwards, aff. Hyas sp., Portunus vocans (A. Milne-Edwards), Achelous sebae (H. Milne Edwards), Actaea sp. cf. A. bifrons Rathbun, Actaea acantha (H....
Tipo: Article / Letter to the editor Palavras-chave: Jamaica; Pleistocene; Crustacea; Decapoda; Cirripedia; 42.74.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/301551
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Marine cage fish farming ArchiMer
Espeut, P.; Harache, Yves; Lemarie, Gilles; Ricard, Jean-marc.
Marine capture fisheries in Jamaica is primarily artisanal in nature ansd is conducted maiinly by fishermen operating from canoes. Approximately 95% of these fishermen operate on the coastal shelf and its associated banks. The commercial species harvested comprise bottom-dwelling, coral reef species and free swimming species of finfish. Other fishery resources of commercial value include marine shrimp, conch and lobsters. Catch statistics are not available for all species, but the Department of Fisheries reports a slight decline in fishery production with production decreasing from 16 milion lbs in 1990, despite the fact that fishing efforts have doubled. Over this period the number of registered fishermen has grown from 12 000 to 16 000, al of whom are...
Tipo: Text Palavras-chave: Aquaculture equipment; Cage culture; Rearing; Marine technology; Fish culture; Jamaica.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/rapport-1918.pdf
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Misinterpreting by localism: transposing European geology and tectonics onto Antillean islands Naturalis
Donovan, S.K..
Le Grand (1988, pp. 80-81, 97) defined ‘localism’ “when geologists are most influenced by data found close to them in time and space and within their own disciplinary specialties”. Jamaica has been prone to localist interpretations made by some of its most notable geologists.
Tipo: Article / Letter to the editor Palavras-chave: Localism; Tectonics; Geology; Jamaica; Antilles; 38.36; 38.10.
Ano: 2011 URL: http://www.repository.naturalis.nl/record/428047
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North Jamaican Deep Fore-Reef Sponges Naturalis
Lehnert, Helmut; Soest, R.W.M. van.
An unexpectedly high amount of new species, revealed within only one hour of summarized bottom time, leads to the conclusion that the sponge fauna of the steep slopes of the deep fore-reef is still largely unknown. Four mixed gas dives at depths between 70 and 90 m, performed in May and June, 1993, at the deep fore-reef off the north Jamaican coast in front of the Discovery Bay Marine Laboratory, revealed a total of 27 demosponge species, ten of which are new to science.
Tipo: Article / Letter to the editor Palavras-chave: Sponges; Deep-water; Fore-reef; Jamaica.
Ano: 1996 URL: http://www.repository.naturalis.nl/record/504805
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PESTICIDE USE AND HUMAN HEALTH IN NORTHWESTERN JAMAICA AgEcon
Ncube, Ngqabutho; Bessler, Patricia; Jolly, Pauline E.; Tint, Kyaw; Fogo, Christopher; Binns, Alvin; Jolly, Curtis M..
A number of studies have detected high levels of pesticide residues in surface water and aquatic life in Jamaica and acute pesticide poisoning is believed to be widespread there. Despite efforts by the Jamaican government to create awareness of the dangers of pesticides and adopt safe a pesticide disposal method, many farmers still display poor pesticide handling and disposal practices. The objectives of this study were to 1) describe pesticide use by farmers in northwestern Jamaica including inappropriate methods in pesticides handling and disposal, and 2) determine whether farmers’ perception of the mode of bodily entry of pesticides affects their method of disposal. Farmers in Westmoreland, St. James and Hanover were surveyed using an...
Tipo: Conference Paper or Presentation Palavras-chave: Pesticide poisoning; Jamaica; Human health; Farmers; CAES; Agricultural and Food Policy; Environmental Economics and Policy; Health Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/36968
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Pre- and post-accession performance to the WTO: A vulnerability study of Jamaica’s beef industry AgEcon
Seepersad, Govind; Felix, Nkosi; Maharaj, Omardath.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation Palavras-chave: WTO; Jamaica; Beef Industry; Vulnerability Index; Agribusiness; Q13.
Ano: 2010 URL: http://purl.umn.edu/122658
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Shallow water sponges of Jamaica Naturalis
Lehnert, Helmut; Soest, Rob W.M. van.
An annotated comprehensive list is provided of all shallow-water sponges (down to 60 m) recently collected and previously recorded from Jamaica. Five new species are described, Plakina jamaicensis, Melophlus ruber, Agelas repens, Stylissa caribica and Hyrtios tubulatus, two of which belong to genera not recorded before from the Western Atlantic (viz. Melophlus and Stylissa). The number of species recorded from shallow waters (reefs, mangroves and lagoons) now amounts to 157 species, several of which, however, are still of uncertain status.
Tipo: Article / Letter to the editor Palavras-chave: Sponges; Jamaica; Shallow-water; New species; Checklist.
Ano: 1998 URL: http://www.repository.naturalis.nl/record/505151
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Small is beautiful? Progress and collections of the Geology Museum, University of the West Indies, Mona Naturalis
Donovan, S.K.; Jackson, T.A.; Brown, I.C.; Wood, S.J..
Geology has been taught at the University of the West Indies, Mona, since 1961. The associated Geology Museum (UWIGM) opened to the public in 1969/1970, although the idea for such a museum was over 100 years old at that time. The collections of the UWIGM share many hazards with those in museums in other parts of the world, such as dust, insect pests and indifferent specimen records, and some that are less common, such as earthquakes and hurricanes. The curatorship is not tenured. Since the mid 1980s the UWIGM has become a more dynamic visitor attraction in many ways, shaking off its ‘old-fashioned’ appearance and expanding the displays to include, for example, its first mounted vertebrate skeleton. An aggressive collections policy involves establishing a...
Tipo: Article / Letter to the editor Palavras-chave: University of the West Indies; Jamaica; Geology; Museums; Collections; 38.59.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/215455
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Soft-sediment ichnotaxa from the Cenozoic White Limestone Group, Jamaica, West Indies Naturalis
Blissett, D.J.; Pickerill, R.K..
Jamaica, the third largest of the Greater Antillean islands, exposes various lithological units that are dominated by Cenozoic carbonate rocks including those of the mid-Cenozoic White Limestone Group. This Group is comprised of six formations, the Troy, Swanswick, Somerset, Moneague, Montpelier and Pelleu Island formations. An uncommon but moderately diverse, poorly to moderately preserved softsediment ichnofauna is described herein from several of these, namely the Moneague, Montpelier and Pelleu Island formations, which have yielded 15 ichnogenera represented by 27 ichnospecies. These are: Bergaueria hemispherica? Crimes, Legg, Marcos & Arboleya; Chondrites furcatus Sternberg; Chondrites isp.; Circulichnus montanus Vialov; Dactyloidites ottoi...
Tipo: Article / Letter to the editor Palavras-chave: Systematics; Burrows; West Indies; Jamaica; Cenozoic; Eocene-Miocene; 38.22.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/214519
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Systematic ichnology of microborings from the Cenozoic White Limestone Group, Jamaica, West Indies Naturalis
Blissett, D.J.; Pickerill, R.K..
The Middle Eocene to Middle Miocene White Limestone Group of Jamaica contains a common and diverse, poorly to well-preserved microboring ichnofauna, namely Centrichnus eccentricus Bromley & Martinell, Curvichnus pediformis isp. nov., Dendrorete balani Tavernier, Campbell & Golubic, Dipatulichnus rotundus Nielsen & Nielsen, Entobia volzi Bromley & D’Alessandro, Entobia isp. cf. E. ovula Bromley & D’Alessandro, Entobia isp. forms A and B, Fossichnus solus Nielsen, Nielsen & Bromley, Maeandropolydora elegans Bromley & D’Alessandro, Maeandropolydora sulcans Voigt, Oichnus asperus Nielsen & Nielsen, Oichnus excavatus Donovan & Jagt, Oichnus gradatus Nielsen & Nielsen, Oichnus ovalis Bromley, Oichnus paraboloides Bromley,...
Tipo: Article / Letter to the editor Palavras-chave: Ichnotaxonomy; Microborings; Jamaica; West Indies; Eocene; Oligocene; Miocene; 38.20.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/217416
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