scholarly journals Bioativity of <em>Agave sisalana</em> Perrine Ex Engelm (Asparagaceae) Aqueous Residual Extract on <em>Diachasmimorpha longicaudata</em> (Hymenoptera: Braconidae)

2021 ◽  
Author(s):  
Tamara Thays Leal ◽  
Tayron Amaral ◽  
Fernando Sujimoto ◽  
Carlos Eduardo Ramos ◽  
Flávia Barbosa
Keyword(s):  
Diachasmimorpha Longicaudata ◽  
Agave Sisalana

O resíduo seco gerado no desfibramento da Agave sisalana e seu impacto na saúde

Textura ◽  
2018 ◽  
Vol 11 (20) ◽  
pp. 1-9
Author(s):  
Eudes Ramos Mateus ◽  
Claudia Blaszkowski de Jacobi
Keyword(s):  
Agave Sisalana

Can Anastrepha fraterculus larval feeding influence chemotaxis and parasitism of Diachasmimorpha longicaudata and Aganaspis pelleranoi?

2021 ◽  
pp. 1-8
Author(s):  
Patricia Daniela da Silva Pires ◽  
Josué Sant’ Ana ◽  
Luiza Rodrigues Redaelli
Keyword(s):  
Biological Control ◽  
Artificial Diet ◽  
Psidium Guajava ◽  
Fruit Production ◽  
Larval Feeding ◽  
Parasitoid Species ◽  
Major Barrier ◽  
Anastrepha Fraterculus ◽  
Diachasmimorpha Longicaudata ◽  
Control Programmes

Abstract Anastrepha fraterculus (Diptera: Tephritidae) is a major barrier to fruit production and exportation. In Brazil, the native parasitoid Aganaspis pelleranoi (Hymenoptera: Figitidae) and the exotic parasitoid Diachasmimorpha longicaudata (Hymenoptera, Braconidae) stand out as biological control agents. Knowledge of the factors that affect interactions among parasitoids, A. fraterculus, and host fruits may enhance the use of these agents in biological control programmes. This study evaluated the chemotaxis and parasitism of A. pelleranoi and D. longicaudata females reared on A. fraterculus larvae and kept on an artificial diet, red guava (Psidium guajava) or apple (Malus domestica). Females of both parasitoid species that emerged from larvae raised on artificial diet, guava or apple, were tested to Y olfactometer choice tests. In the parasitism tests, both parasitoid species were made to choose between A. fraterculus larvae brushed with water, apple pulp or guava pulp. D. longicaudata females from artificial diet (control) did not distinguish between fruit odours; however, females of D. longicaudata from larvae kept in apple or guava directed to the odours of their original fruit. The greatest parasitism for D. longicaudata occurred in the units that contained the pulp in which the larvae grew. A. pelleranoi from artificial diet preferred guava odours, including the females kept in apple. Similar results were observed in the parasitism bioassays. Our results found that A. fraterculus larval feeding influenced search behaviour and parasitism of D. longicaudata, whereas A. pelleranoi rearing experience did not affect its host choices.

scholarly journals Assessing Leaf Biomass of Agave sisalana Using Sentinel-2 Vegetation Indices

2021 ◽  
Vol 13 (2) ◽  
pp. 233
Author(s):  
Ilja Vuorinne ◽  
Janne Heiskanen ◽  
Petri K. E. Pellikka
Keyword(s):  
Near Infrared ◽  
Vegetation Indices ◽  
Fibre Production ◽  
Additive Models ◽  
Leaf Biomass ◽  
Ground Vegetation ◽  
Perennial Crop ◽  
Red Edge ◽  
Agave Sisalana ◽  
Sentinel 2

Biomass is a principal variable in crop monitoring and management and in assessing carbon cycling. Remote sensing combined with field measurements can be used to estimate biomass over large areas. This study assessed leaf biomass of Agave sisalana (sisal), a perennial crop whose leaves are grown for fibre production in tropical and subtropical regions. Furthermore, the residue from fibre production can be used to produce bioenergy through anaerobic digestion. First, biomass was estimated for 58 field plots using an allometric approach. Then, Sentinel-2 multispectral satellite imagery was used to model biomass in an 8851-ha plantation in semi-arid south-eastern Kenya. Generalised Additive Models were employed to explore how well biomass was explained by various spectral vegetation indices (VIs). The highest performance (explained deviance = 76%, RMSE = 5.15 Mg ha−1) was achieved with ratio and normalised difference VIs based on the green (R560), red-edge (R740 and R783), and near-infrared (R865) spectral bands. Heterogeneity of ground vegetation and resulting background effects seemed to limit model performance. The best performing VI (R740/R783) was used to predict plantation biomass that ranged from 0 to 46.7 Mg ha−1 (mean biomass 10.6 Mg ha−1). The modelling showed that multispectral data are suitable for assessing sisal leaf biomass at the plantation level and in individual blocks. Although these results demonstrate the value of Sentinel-2 red-edge bands at 20-m resolution, the difference from the best model based on green and near-infrared bands at 10-m resolution was rather small.

ANALISA KEKUATAN TARIK KOMPOSIT POLIMER UNSATURATED POLYESTER RESIN BERPENGUAT SERAT SISAL DENGAN PENAMBAHAN FILLER SERBUK KARBON

2020 ◽  
Vol 4 (2) ◽  
pp. 106
Author(s):  
Thamliha Thamliha ◽  
Ali Jannifar ◽  
Nurlaili Nurlaili
Keyword(s):  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
Universal Testing ◽  
Agave Sisalana

Tanaman sisal adalah tumbuhan liar yang hidup didaerah bebatuan seperti di Kampong Merodot, Kecamatan Bintang, Kabupaten Aceh Tengah, yang sering disebut penduduk lokal tanaman jedem. Didaerah tersebut tumbuhan sisal tidak di mamfaatkan dan terbuang begitu saja. Tujuanya untuk mengetahui kekuatan uji tarik komposit polimer UPR berpenguat serat sisal dengan penambahan filler serbuk karbon yang dibuat lurus, acak dan sudut 45 dan untuk dianalisa hasil dari kekuatan uji tarik sebagai produk yang sesuai pengunaanya berdasarkan regangan dan modulus elasitas. Proses pembuatan komposit polimer berpenguat serat sisal dengan penambahan filler serbuk karbon mengunakan bahan serat sisal (Agave Sisalana), Unsaturated  Polyester Resin dan Filler Serbuk Karbon (Toner). Pengujian uji tarik mengunakan mesin Universal Testing Macihine dengan bentuk spesimen standar ASTM D3090. Hasil perbandingan serat sisal UPR lebih kuat dibandingkan serat sisal epoksi adalah 40.36% dan  Hasil kekuatan tarik orientasi serat sisal lurus 27.75 Mpa, modulus elastisitas 0.016 GPa dan regangan 2.07%, orientasi serat sisal acak  28.43 Mpa, modulus elastisitas 0.016 GPa dan regangan 1.86%, orientasi serat sisal sudut 45  adalah 21.18 Mpa, modulus elastisitas  0.016 GPa dan regangan 0.86% dan serat acak dominan kuat dibandingkan serat sisal lurus dan serat sisal sudut 45 .

Aqueous extracts of Agave sisalana boles have prebiotic potential

2018 ◽  
Vol 34 (16) ◽  
pp. 2367-2371
Author(s):  
Alexsandra Conceição Apolinário ◽  
Antonio Diogo Silva Vieira ◽  
Susana Marta Isay Saad ◽  
Attilio Converti ◽  
Adalberto Pessoa ◽  
...  
Keyword(s):  
Aqueous Extracts ◽  
Agave Sisalana

scholarly journals Valor nutricional de componentes da planta e dos coprodutos da Agave sisalana para alimentação de ruminantes

2011 ◽  
Vol 63 (6) ◽  
pp. 1493-1501 ◽  
Author(s):  
L.G.N. Brandão ◽  
L.G.R. Pereira ◽  
J.A.G. Azevêdo ◽  
R.D. Santos ◽  
A.S.L. Aragão ◽  
...  
Keyword(s):  
Agave Sisalana

Avaliaram-se a composição bromatológica, os nutrientes digestíveis totais (NDT), a digestibilidade in vitro da matéria seca (DIVMS) e a cinética de fermentação ruminal do bulbilho e pseudocaule da planta do sisal e dos coprodutos do desfibramento do sisal (CDS) na forma de silagem, feno e amonização com 5% de ureia e do pó da batedeira das fibras de sisal. O delineamento experimental foi o inteiramente ao acaso, com três repetições. Os valores da matéria seca variaram de 11,4 a 89,7% na silagem e no feno do CDS, respectivamente. O CDS amonizado destacou-se com o maior valor de proteína bruta, 22,7%. Para o pseudocaule e o pó da batedeira, não foram detectadas a presença de extrato etéreo. Os teores de carboidratos não fibrosos (CNF) foram mais altos no pseudocaule, 72,7%, e no bulbilho, 69,5%. Não houve diferença nos valores de DIVMS entre os alimentos avaliados. O pó da batedeira apresentou os maiores valores de NDT. Os teores de fibra em detergente ácido, de CNF e de produção cumulativa de gases do pó da batedeira, bulbilhos e pseudocaule os qualificam como volumosos de baixo teor de fibra e alta digestibilidade.

scholarly journals Transcriptome profiling of Diachasmimorpha longicaudata towards useful molecular tools for population management

BMC Genomics ◽  
2016 ◽  
Vol 17 (1) ◽  
Author(s):  
M. Constanza Mannino ◽  
Máximo Rivarola ◽  
Alejandra C. Scannapieco ◽  
Sergio González ◽  
Marisa Farber ◽  
...  
Keyword(s):  
Transcriptome Profiling ◽  
Population Management ◽  
Molecular Tools ◽  
Diachasmimorpha Longicaudata
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