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Trichosanthes wallichiana. Figure 1. Female Bactrocera tau ovipositing on fruit of Trichosanthes wallichiana.
Source publication
Bactrocera tau was reared from the ripe fruit of Trichosanthes wallichiana (Cucurbitaceae) collected in University of Malaya campus. More male flies were recovered than female flies, but the ratio was not significantly different. The pupation period was 9 to 10 days, and the pupal mortality rate was 18.18%. This is a new record of host plant of tep...
Contexts in source publication
Context 1
... T. wallichiana fruits ( Fig. 1) were collected from wild plants in the University of Malaya campus. They were brought back to the laboratory and kept in screened plastic aquaria with suitable substrate for the larvae to develop and pupate [5,6]. Pupae were collected and placed in small plastic tubes for development. Emerging adult fruit flies were collected and ...
Context 2
... late December 2013 and early January 2014, female B. tau was seen ovipositing on ripe fruit of T. wallichiana ( Fig. 1) in the garden of Institute of Biological Sciences, University of Malaya. Multiple females at times oviposited together at the same spot (putrefied area) of the fruit. Occasionally, female Bactrocera cucurbitae was seen 'ovipositing' on the fruit together with B. tau (Fig. ...
Context 3
... wallichiana (Crow's Cucumber) is a climber (Fig. 3) growing in forest edge and open places in the lowlands [7]. It is a member of the Cucurbitaceae. The roundish fruit measures 5 to 10 cm long, and when ripe is red in colour (Fig. 1). It has a hard outer rind. The seeds are embedded in greenish-black ...
Citations
... The fruit flies penetrate the skin of the mature fruit and deposit eggs. The fruit is then damaged by larvae which feed in the fruit, and the fruit is no longer suitable for consumption [20,21]. It should be examined whether the fibres are still usable for composite materials. ...
Toddy palm fruit have an apparent density below 0.8 g/cm³ and offer an interesting lightweight construction potential in polylactide (PLA) composites reinforced with 37 mass-% fibres. Single fibre bundles show similar mechanical properties compared with coir: tensile strength of 240 MPa, Young´s modulus of 3.8 GPa and an elongation at break of 31%. However, density and diameter (~ 50 μm) of fruit fibre bundles are significantly lower. The compression moulded composites have a density of 0.9 g/cm³ and achieved an unnotched Charpy impact strength of 12 kJ/m², a tensile strength of 25 MPa, Young’s modulus of 1.9 GPa and an elongation at break of 9%. Due to the high porosity of the composites and the different stress-strain behaviour of fibre and matrix the fibre-reinforcement potential could not be fully used. Maximum stress of the composite was reached at the elongation at break of the PLA-matrix (~2%) while the fibre achieved its maximum stress at an elongation of ~31%. After reaching the maximum stress of the composite, the fibres were pulled out from the matrix with low energy absorption, resulting in a decrease in stress and a limited reinforcement potential. Additionally, the study investigates whether an insect attack by the Asian fruit fly on the mesocarp has a significant influence on the mechanical fibre characteristics. The results have shown that only the rough surface of the fibre bundles is smoothed by insect infestation. The mechanical properties were not significantly affected. For this reason insect-infested fruits of the toddy palm, which are no longer suitable for food production, can be used for the production of sustainable composite materials.
... It is among the economically important species belonging to the Dacinae subfamily, occurring from Pakistan to Philippines and south to Indonesia [2]. It is a polyphagous fruit pest, infesting host fruits of the families Anacardiaceae, Cucurbitaceae, Elaeocarpaceae, Moraceae, Myrtaceae, Oxalidaceae, Rutaceae, Sapotaceae, and Solanaceae [3][4][5][6][7]. The adult male flies are attracted to Cue lure. ...
The tephritid fruit fly Zeugodacus tau (Walker) is a polyphagous fruit pest of economic importance in Asia. Studies based on genetic markers indicate that it forms a species complex. We report here (1) the complete mitogenome of Z. tau from Malaysia and comparison with that of China as well as the mitogenome of other congeners, and (2) the relationship of Z. tau taxa from different geographical regions based on sequences of cytochrome c oxidase subunit I gene. The complete mitogenome of Z. tau had a total length of 15631 bp for the Malaysian specimen (ZT3) and 15835 bp for the China specimen (ZT1), with similar gene order comprising 37 genes (13 protein-coding genes—PCGs, 2 rRNA genes, and 22 tRNA genes) and a non-coding A + T-rich control region (D-loop). Based on 13 PCGs and 15 mt-genes, Z. tau NC_027290 (China) and Z. tau ZT1 (China) formed a sister group in the lineage containing also Z. tau ZT3 (Malaysia). Phylogenetic analysis based on partial sequences of cox1 gene indicates that the taxa from China, Japan, Laos, Malaysia, Bangladesh, India, Sri Lanka, and Z. tau sp. A from Thailand belong to Z. tau sensu stricto. A complete cox1 gene (or 13 PCGs or 15 mt-genes) instead of partial sequence is more appropriate for determining phylogenetic relationship.