Daily activity and non-random occurrence of captures in the Asian palm weevils

Fanini, Lucia; Longo, S.; Cervo, Rita; Roversi, Pio Federico; Mazza, Giuseppe

doi:10.1080/03949370.2014.905500

Cited by 19 publications

(12 citation statements)

References 13 publications

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“…Trap efficiency depends not only on the pheromone and kairomone but also on other factors such as the trap design, color, height, and the weather conditions (Hallett et al 1999;Abuagla & Al-Deeb 2012). Conventional plastic bucket traps (CTs) (Ajlan & Abdulsalam 2000;Faleiro 2005;Abuagla & Al-Deeb 2012;Fanini et al 2014) are used in conjunction with pheromone traps to increase the efficacy or to add new functions to the trap.…”

Section: Introductionmentioning

confidence: 99%

“…Little is known about the daily activities of the red palm weevil in palm date orchards, and the timing of the maximum rates of capture in pheromone traps varies among studies. Fanini et al (2014) reported no nocturnal activity by adults, and they captured most adults between 6 AM and 9 AM. However, Faleiro (2005) found that the red palm weevil was most active between 12 AM and 6 AM.…”

Section: Introductionmentioning

confidence: 99%

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Diel Flight Activity Patterns of the Red Palm Weevil (Coleoptera: Curculionidae) as Monitored by Smart Traps

Aldryhim¹,

Ayedh

2015

Florida Entomologist

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The red palm weevil, Rhynchophorus ferrugineus (Olivier) (Coleoptera: Curculionidae), is a serious pest of palm in many subtropical and tropical regions of the world. Traps baited with aggregation pheromones are important management tools used to control this weevil. The daily flight activity patterns of the red palm weevil in Saudi Arabian date palm orchards were observed using smart traps (STs) with a catch period of 3 h (8 periods daily). Conventional bucket traps (CTs) were used for comparison. The capture efficiency of the STs was not significantly different from that of the CTs. A circular statistics analysis showed that the time of adult capture in the STs was nonrandom and indicated mainly diurnal activity; few adults were captured at night. The STs revealed differential activity between the sexes. The female activity pattern exhibited 2 strong peaks at 7 to 9 AM and 4 to 7 PM, and the 2nd peak was significantly higher than the 1st peak. The male activity pattern showed 3 peaks at 7 to 10 AM, 1 to 4 PM, and 4 to 7 PM with no significant differences among the peaks. Males initiated activity before the females. The number of adults captured by STs was positively correlated with the time of sunrise and wind velocity, negatively correlated with the time of sunset and the ambient temperature, and not significantly correlated with the relative humidity. Although these patterns were consistent during the study period, they differed from a variety of other patterns reported in European and Southern Asian environments, which suggests that R. ferrugineus has evolved considerable behavioral flexibility in coping with harsh environmental conditions typical of hot arid date production areas in Saudi Arabia. Knowledge of R. ferrugineus daily activity patterns in local field environments can help managers optimize the timing of pesticide applications and other control activities.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Diel Flight Activity Patterns of the Red Palm Weevil (Coleoptera: Curculionidae) as Monitored by Smart Traps

Aldryhim¹,

Ayedh

2015

Florida Entomologist

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“…DOI: http://dx.doi.org/10.22192/ijarbs.2017.04.01.010 Aldryhim & Ayedh (2015) reported that the male R. ferrugineus showed a peak of three daily flight activities versus a peak of two for the female, suggesting that males initiate flight activity more readily than females. Likewise, Fanini et al (2014) found that male red palm weevils were active earlier in the day than females in both native and invasive localities. But information about the male visual system in this family is vague and insufficient.…”

Section: Introductionmentioning

confidence: 91%

Ultrastructure of dorsal rim area of compound eyes of the male the red palm weevil, Rhynchophorus ferrugineus (Olivier) (Curculionidae: Rhynchophorinae): in relation to habitat

Al-Fuhaid¹

2017

Int. J. Adv. Res. Biol. Sci

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The compound eyes of a male red palm weevil, Rhynchophorus ferrugineus (Olivier), were investigated using scanning techniques, specifically, the ommatidium in the dorsal rim area was studied by light and electron microscopy. Each eye contained 3000-3500 mostly hexagonal facets. No ocelli, corneal nipples or interommatidial hairs were found. The eye was of the acone and apposition types, with 8 retinular cells per ommatidium (two central, six peripherals).The peripheral distal and proximal rhabdome were composed of six separated rhabdomeres, with the separation between them increased by interretinular spaces. The central distal rhabdom consists ofr7, while the central proximal rhabdomeres was fused by R7 and R8. The microvilli of the peripheral distal rhabdomeres R2, R3, and, the central proximal R7, R8 were arranged in a three-dimensional pattern, where as distal R4 was warped around itself. The distal R7 and the proximal R1-R6 were possessed microvilli oriented in such away as to permit e-vector discrimination. The difference between the central and peripheral rhabdomeres in the two rhabdom regions. With regard to the microvillar arrangement implied the occurrence of the rhabdomeric twist. It was encountered only at the distal region, where the rhabdomeric organization displayed an effective strategy to improve absolute sensitivity, at the expense of the polarization of sensitivity, to overcome the particular problem of vision in dim habitats. A possible function in the perception of host related visual cues is proposed and discussed in relation to the plausible roles of the dorsal rim area in host location by male weevils.

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“…The electronic traps can naturally include a time stamp of each insect incident and the information provided by the e-traps formulates new services: to carry out studies that cannot be practically performed manually, as explained hereinafter: There have been numerous studies demonstrating the periodicity of trap captures [16][17][18][19][20][21]. Some insect species appear to respond to pheromone during daylight while others are active during the night because of complicated mechanisms of insect physiology and reproduction [22,23].…”

Section: Introductionmentioning

confidence: 99%

Automated Remote Insect Surveillance at a Global Scale and the Internet of Things

2017

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Abstract:The concept of remote insect surveillance at large spatial scales for many serious insect pests of agricultural and medical importance has been introduced in a series of our papers. We augment typical, low-cost plastic traps for many insect pests with the necessary optoelectronic sensors to guard the entrance of the trap to detect, time-stamp, GPS tag, and-in relevant cases-identify the species of the incoming insect from their wingbeat. For every important crop pest, there are monitoring protocols to be followed to decide when to initiate a treatment procedure before a serious infestation occurs. Monitoring protocols are mainly based on specifically designed insect traps. Traditional insect monitoring suffers in that the scope of such monitoring: is curtailed by its cost, requires intensive labor, is time consuming, and an expert is often needed for sufficient accuracy which can sometimes raise safety issues for humans. These disadvantages reduce the extent to which manual insect monitoring is applied and therefore its accuracy, which finally results in significant crop loss due to damage caused by pests. With the term 'surveillance' we intend to push the monitoring idea to unprecedented levels of information extraction regarding the presence, time-stamping detection events, species identification, and population density of targeted insect pests. Insect counts, as well as environmental parameters that correlate with insects' population development, are wirelessly transmitted to the central monitoring agency in real time and are visualized and streamed to statistical methods to assist enforcement of security control to insect pests. In this work, we emphasize how the traps can be self-organized in networks that collectively report data at local, regional, country, continental, and global scales using the emerging technology of the Internet of Things (IoT). This research is necessarily interdisciplinary and falls at the intersection of entomology, optoelectronic engineering, data-science, and crop science and encompasses the design and implementation of low-cost, low-power technology to help reduce the extent of quantitative and qualitative crop losses by many of the most significant agricultural pests. We argue that smart traps communicating through IoT to report in real-time the level of the pest population from the field straight to a human controlled agency can, in the very near future, have a profound impact on the decision-making process in crop protection and will be disruptive of existing manual practices. In the present study, three cases are investigated: monitoring Rhynchophorus ferrugineus (Olivier) (Coleoptera: Curculionidae) using (a) Picusan and (b) Lindgren trap; and (c) monitoring various stored grain beetle pests using the stored-grain pitfall trap. Our approach is very accurate, reaching 98-99% accuracy on automatic counts compared with real detected numbers of insects in each type of trap.

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Daily activity and non-random occurrence of captures in the Asian palm weevils

Cited by 19 publications

References 13 publications

Diel Flight Activity Patterns of the Red Palm Weevil (Coleoptera: Curculionidae) as Monitored by Smart Traps

Diel Flight Activity Patterns of the Red Palm Weevil (Coleoptera: Curculionidae) as Monitored by Smart Traps

Ultrastructure of dorsal rim area of compound eyes of the male the red palm weevil, Rhynchophorus ferrugineus (Olivier) (Curculionidae: Rhynchophorinae): in relation to habitat

Automated Remote Insect Surveillance at a Global Scale and the Internet of Things

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