scholarly journals THE ROLE OF PLANTATIONS OF THE AFRICAN PALM (ELAEIS GUINEENSIS) IN THE CONSERVATION OF SNAKES IN COLOMBIA

Caldasia ◽  
2015 ◽  
Vol 37 (1) ◽  
pp. 169 ◽  
Author(s):  
John Lynch

<p>Monocultures of the African oil palm (Elaeis guineensis) were studied between 2006 and 2013 so as to determine which species of snakes frequented them and to estimate the abundances of each species encountered. Thirty five species of snakes (three boas, one coral, 27 colubrids, one tropidophid, one typhlopid, and two vipers) were captured within palmeras. Palm plantations are revealed to (1) augment the densities of ten species of snakes well beyond the densities found by collectors in natural and/or relatively transformed habitats and (2) to not offer benefits to at least 75% of the snake community found in the vicinities of palm plantations. The majority of snake species (60%) found in palmeras are nocturnal species. The most common species (defined by having 15 or more captures) were Atractus univittatus, Bothrops asper, B. atrox, Epicrates maurus, Leptodeira annulata, Liophis melanotus, Ninia atrata, Oxyrhopus petolarius, Pseudoboa neuwiedii, and Tantilla melanocephala. Palm plantations permit substantial local population sizes for a fraction (&lt; 25%) of the local snake community. Internal practices of such plantations could be modified so as to protect a larger share of the fauna by means of two practices: (1) construction and maintenance of paleras as well as (2) creating a mosaic of palm plantations enclosing “islands” of secondary forests.</p>

2018 ◽  
Vol 67 (1) ◽  
pp. 170-178 ◽  
Author(s):  
Gabriel Chaves ◽  
Gustavo Adolfo Ligarreto- Moreno ◽  
Daniel Gerardo Cayon-Salinas

El objetivo de este estudio fue realizar un análisis comparativo de las características físicas y químicas de racimos de genotipos de Elaeis oleifera y de sus híbridos interespecíficos OxG con Elaeis guineensis, determinando los componentes y el potencial del aceite del racimo, y la calidad de los aceites, analizando el contenido de ácidos grasos, vitamina E y carotenos. En el estudio se utilizaron racimos provenientes de inflorescencias sin polinización asistida con la presencia perimetral de E. guineensis. Se utilizó un diseño experimental completamente al azar con tres unidades experimentales, cada una conformada por tres racimos. Los mayores cuajados del fruto se encontraron en el genotipo de E. oleifera Sinú (76,53 %) y el híbrido OxG II (72,64 %). Los potenciales de extracción de aceite fueron superiores en los materiales híbridos OxG destacándose el II (20,82 %). Las palmas E. oleifera presentaron mejores perfiles de ácidos grasos, destacándose los materiales del genotipo Sinú (79,1 % de ácidos grasos insaturados) y los del híbrido II (70,2 %). Para el contenido de vitamina E se confirmó la alta calidad del aceite de los materiales de E. oleifera, sobresaliendo el genotipo Coarí (1.006,7 ppm) y el híbrido II (1.549,6 ppm); el material del genotipo Sinú registró el mayor contenido de carotenos totales (1.524,7 ppm).


1974 ◽  
Vol 38 (1) ◽  
pp. 193-200 ◽  
Author(s):  
J. A. RAJARATNAM ◽  
J. B. LOWRY
Keyword(s):  
Oil Palm ◽  

2015 ◽  
Vol 43 (2) ◽  
pp. 147
Author(s):  
Roberdi , ◽  
Sobir , ◽  
Sudirman Yahya ◽  
Nurita Toruan-Mathius ◽  
Tony Liwang

<p>ABSTRACT</p><p>Molecular genetic analysis of hard bunch phenomenon in oil palm was done in order to elucidate the role of genetic factor underlying hard bunch in oil palm plantation. The aim of this study was to identify the AFLP primer combination that co-segregates with hard bunch phenotype related gene in oil palm. Molecular analysis was done by bulk segregant analysis approach. DNA was isolated from leaves of the normal and hard bunch palm. DNA from ten individual palms from each category were pooled and used as a template. A total of 56 AFLP primer combinations were selected for selection of polymorphic primer, and as a result it was found that 22 AFLP primer combinations (39.28%) were polymorphic. A total of 48 individual of palm DNA containing 24 individual for each group were further genotyped by those 22 polymorphic markers. Of these, one AFLP primer combination (E-ACC/M-CTG) was obtained as a co-segregated marker that distinguished the hard bunch DNA from the normal one. Based on the analysis of the target sequence aligned to the oil palm DNA sequences available in database, we found that our sequence has similarity with Ty-1 copia retrotransposon. This sequence distribute in all 16 linkage group of oil palm genome.</p><p>Keywords: abnormal fruits, AFLP, oil palm, Ty-1 copia retrotransposon</p>


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