Consecutive Days In August Research Articles

Monitoring Arthropods in maize and pasture fields in São Miguel and São Jorge Islands: IPM-Popillia Project.

The dataset presented here is an achievement of the H2020 European project "Integrated Pest Management of the Invasive Japanese Beetle, Popilliajaponica (IPM-Popillia)". This project addresses the challenge of a new risk to plant health in Europe, the invasion of the Japanese beetle, Popilliajaponica (Newman, 1838) (Coleoptera, Rutelidae) and provides an environmentally friendly IPM Toolbox to control the expanding pest populations across Europe. This study aims to present the records of terrestrial arthropod diversity with a special focus on four groups belonging to Carabids and Staphylinid beetles (Coleoptera), Opiliones and Anisolabididae (Dermaptera), collected with the potential to be used as biocontrol agents against P.japonica in future Integrated Pest Management programmes. A thorough sampling programme was conducted in maize and pasture fields in two Islands of the Azores (São Miguel and São Jorge) in the summer of 2022. We provided an inventory of the arthropods recorded in two Azorean agroecosystems (maize and pasture fields) from São Miguel and São Jorge Islands. A total of ten maize and ten pasture fields were sampled and a total of 360 pitfall traps were installed, 216 in São Miguel and 144 in São Jorge, for seven consecutive days in August and September of 2022.We collected 18559 specimens belonging to the phylum Arthropoda, four classes, twelve orders, twenty-six families and forty morphospecies (two identified at the family level as carabid and Staphylinid larvae and 38 identified at the species level). We identified 38 taxa at the species level (n = 18281). Of the 38 identified taxa, 18 species were predators, 15 were plant feeders and five were omnivores. The 18 predators belong to the following families: 10 species were Carabidae, two Staphylinidae, one Anisolabididae, one Chrysopidae, one Leiobunidae, one Nabidae, one Phalangiidae and one Scathophagidae. Concerning the origin of the predators, we recorded five native species: two Carabidae, one Leiobunidae, one Scathophagidae and one Nabidae. The other 13 predator species were introduced or indeterminate.

Toxic and Hazardous (B3) Solid Waste Management at Abdul Moeloek General Hospital: An Implementation Assessment in 2022 and Recommendations

Making sure that the health and environment are taken care of, solid B3 Waste produced by hospitals has to be treated according to existing regulations. As an A-class hospital in Bandar Lampung, AM General Hospital commit to conducting good practices for its solid B3 waste management. This study aims to analyze the current implementation of solid B3 waste management, the compliance of AM General Hospital’s B3 waste management Standard Operation Procedure (SOP) with current regulations, and recommend improvement strategies for solid B3 waste management in AM General Hospital. For eight consecutive days in August 2022, solid B3 waste samples were collected and analyzed. The average solid B3 waste produced by AM General Hospital was 285 kg/day for infectious waste and 6.3 kg/day for sharp waste. Inpatient installation contributed the majority of solid B3 waste there. Due to the observation sheet that was created according to the regulations, 65% of AM General Hospital’s SOP involving sorting; storage; collection; transportation; and disposal has already complied with the regulations. Several shortcomings were found such as the absence of an official solid B3 waste handling report; the absence of proper labeling in the B3 waste containers; and the use of black plastic bags. Analytical Hierarchy Process (AHP) data analysis technique was deployed, resulting in a technology application and waste minimization as improvement recommendations.

Wildfire-Like Effect of a WhatsApp Campaign to Mobilize a Group of Predominantly Health Professionals With a University Degree on a Health Issue: Infodemiology Study

BackgroundOnline interactions within a closed WhatsApp group can influence the attitudes and behaviors of the users in relation to health issues.ObjectiveThis study aimed to analyze the activity of the members of a WhatsApp group initiated to raise awareness of the possible health effects of 5G mobile networks and mobilize members to sign the related petition.MethodsWe retrospectively analyzed data from the WhatsApp group of 205 members that was active during 4 consecutive days in August 2019. The messages exchanged were collected, anonymized, and analyzed according to their timing and content.ResultsThe WhatsApp group members were invited to the group from the administrator’s contacts; 91% (187/205) had a university degree, 68% (140/205) were medical professionals, and 24% (50/205) held academic positions. Approximately a quarter of the members (47/205, 23%) declared in their messages they signed the corresponding petition. The intense message exchange had wildfire-like features, and the majority of messages (126/133, 95%) were exchanged during the first 26 hours. Despite the viral activity and high rate of members openly declaring that they signed the petition, only 8 (8/133, 6%) messages from the group members, excluding the administrator, referred to the health issue, which was the topic of the group. No member expressed an opposite opinion to those presented by the administrator, and there was no debate in the form of exchanging opposite opinions.ConclusionsThe wildfire-like activity of the WhatsApp group and open declaration of signing the petition as a result of the mobilization campaign were not accompanied by any form of a debate related to the corresponding health issue, although the group members were predominantly health professionals, with a quarter of holding academic positions.

Dynamics of xylem and phloem sap flow in an outdoor zelkova tree visualized by magnetic resonance imaging.

Xylem and phloem sap flows in an intact, young Japanese zelkova tree (Zelkova serrata (Thunb.) Makino) growing outdoors were measured using magnetic resonance imaging (MRI). Two propagator-based sequences were developed for q-space imaging: pulse field gradient (PFG) with spin echo (PFG-SE) and stimulated echo (PFG-STE), which were used for xylem and phloem flow measurements, respectively. The data evaluation methods were improved to image fast xylem flow and slow phloem flow. Measurements were taken every 2-3h for several consecutive days in August 2016, and diurnal changes in xylem and phloem sap flows in a cross-section of the trunk were quantified at a resolution of 1mm2. During the day, apparent xylem flow volume exhibited a typical diurnal pattern following a vapor pressure deficit. The velocity mapping of xylem sap flow across the trunk cross section revealed that the greatest flow volume was found in current-year earlywood that had differentiated in April-May. The combined xylem flow in the 1- and 2-year-old annual rings also contributed to one-third of total sap flow. In the phloem, downward sap flow did not exhibit diurnal changes. This novel application of MRI in visualization of xylem and phloem sap flow by MRI is a promising tool for in vivo study of water transport in mature trees.

Richness, Community Structure, and Diurnal Activity of Species of Ants along a Disturbance Gradient at El Cielo Biosphere Reserve, Tamaulipas, Mexico

The effect of environmental variability on species richness, community structure, and daytime activity of ants along a disturbance gradient was examined at El Cielo Biosphere Reserve, Tamaulipas, Mexico. The study site was delimited by LANDSAT satellite images. Ants were evaluated using pitfall traps from 0800 to 1800 every hour for four consecutive days in August 2016. In total, 1190 individuals of 20 species and seven subfamilies were obtained. Six species responded positively to the disturbed environment during the morning, with variation between assessment days. The daytime activity of ant species was variable during the day along the disturbance gradient. Solenopsis geminata was the species that showed the most activity during most of the day in the study. Abundance of species differed between most environments each hour. The total variation explained by the first two axes of the relationship analysis of species abundance and environmental attributes was 83% (Axis 1: Temperature and humidity = 64%, Axis 2: Rocks = 19%). S. geminata and Forelius pruinosus were the species that responded significantly to the variables evaluated. The results suggested that environmental variability along a disturbance gradient determines the establishment of the niche and the diurnal activity profile of each species throughout the day and between days.

Spatial and temporal patterns of microclimates at an urban forest edge and their management implications.

Fragmented forests generate a variety of forest edges, leading to microclimates in the edge zones that differ from those in the forest interior. Understanding microclimatic variation is an important consideration for managers because it helps when making decisions about how to restrict the extent of edge effects. Thus, our study attempted to characterize the changing microclimate features at an urban forest edge located on Mt. Gwanak, Seoul, South Korea. We examined edge effects on air temperature, relative humidity, soil temperature, soil moisture, and photosynthetically active radiation (PAR) during the hottest three consecutive days in August 2016. Results showed that each variable responded differently to the edge effects. This urban forest edge had an effect on temporal changes at a diurnal scale in all microclimate variables, except soil moisture. In addition, all variables except relative humidity were significantly influenced by the edge effect up to 15m inward from the forest boundary. The relative humidity fluctuated the most and showed the deepest extent of the edge effect. Moreover, the edge widths calculated from the relative humidity and air temperature both peaked in the late afternoon (16:00h). Our findings provide a reference for forest managers in designing urban forest zones and will contribute to the conservation of fragmented forests in urban areas.

Investigation of a Cluster of Surgical Site Infections Post Carpal Tunnel Release Procedure in an Ambulatory Surgery Center

Investigation of a Cluster of Surgical Site Infections Post Carpal Tunnel Release Procedure in an Ambulatory Surgery Center

Physiological response of dromedary camels to road transportation in relation to circulating levels of cortisol, thyroid hormones and some serum biochemical parameters

Transportation is often considered as one of the main causes of stress raising considerable interest, both in economic and animal welfare terms. The objective of the current study was to determine physiological response of dromedary camels to road transportation in relation to circulating levels of cortisol, thyroid hormones and some serum biochemical factors during summer conditions. Ten Iranian dromedary camels, five males and five females, were selected for the study. The study was conducted on three consecutive days in August 2008. At first day, blood samples were collected at 08:30 A.M., 09:30 A.M. and 01:30 P.M. to determine any possible variation in individual measurements due to diurnal changes or as a result of food and water deprivation for 5 h. Travel commenced on day 2 at 08:30 A.M. for 5 h, with a total of about 300 km traveled. At second day, blood samples were collected immediately before loading, at 08:30 a.m., after 1 h transport, at 09:30 A.M., and on the end of transportation, after unloading, at 01:30 P.M. Final blood sample was taken 24 h after arrival. In the current study no significant difference was observed in any parameter between sexes at each sampling time. The data related to day before transport had no significant differences between different times except for values obtained for cortisol that at 01:30 P.M. showed a significant decrease in comparison with data at 08:30 and 09:30. Circulating cortisol, T(4), T(3) and fT(4) levels was significantly higher after transportation compared with pre-transport values and returned to basal values within 24 h after transport. Transportation had effects on metabolism as demonstrated by increase in serum concentrations of glucose, NEFA, and urea nitrogen. Serum concentrations of glucose, NEFA, and urea nitrogen returned to basal values in final bleeding at 24 h after transport termination. In the current study transportation had no significant effects on serum concentrations of fT(3), triglycerides, cholesterol, beta-hydroxybutyrate, albumin and total protein. Taken together, the results obtained for short road transportation of dromedary camels showed a strong physiological response and provide some biomarkers for stress detection in this species. Further research to validate these potential biomarkers is necessary.

Is Rhodnius nasutus (Hemiptera; Reduviidae) changing its habitat as a consequence of human activity?

Rhodnius nasutus, a triatomine species autochthonous in the Brazilian Northeast, is primarily associated with the Copernicia prunifera palm tree (Carnauba). For the first time, the colonization of this triatomine in another tree species is reported. To investigate the existence of an infected triatomine focus located in a periurban area of the county of Jaguaruana, Ceará, situated in the Brazilian Northeast, where soil is greatly altered and natural vegetation scarce, an entomological survey was performed. During 2 consecutive days in August 2006 and 4 in December 2006, with the aid of live-bait traps, nine C. prunifera palms and seven Licania rigida trees (Oiticica), among other typical trees of the region, were sampled. In April 2007, 13 L. rigida trees and five C. prunifera palm trees were newly sampled. Considering the three investigation periods, a total of 20 R. nasutus specimens in C. prunifera and 52 in L. rigida were captured, in all developmental stages, 12.5 and 20.7%, respectively, harboring T. cruzi-like protozoa. The authors suggest that environmental damages are facilitating the ability of this species to colonize other trees besides palms.

Spatial patterns of the surf zone hyperbenthic fauna of Valdivia Bay (Ecuador)

The present research is a first attempt to study the hyperbenthic fauna of the surf zone of Valdivia Bay (South East Pacific--Ecuador), an exposed low tide terrace--rip beach. The aims of the study were to contribute to the inventory of the surf zone fauna of the tropical southeast Pacific coast, to investigate spatial distribution patterns along the bay and to search for possible tidal effects on the hyperbenthic composition. Samples were taken during daylight with a hyperbenthic sledge on 6 consecutive days in August 1999 at high tide, low tide and mid tide. The hyperbenthic community was characterized by quantifying the higher taxa, their density and the relative composition of the dominant groups. No tidal effect could be observed, but two main geographically distinct hyperbenthic assemblages were distinguished along the bay, related to hydrodynamic factors (local current velocity, intertidal beach slope and suspended particulate matter). In the turbulent northern part of the bay the highest densities were encountered and hyperbenthos was, next to the dominant mysid Metamysidopsissp., mainly composed of planktonic organisms (calanoid copepods, chaetognaths and fish eggs). In the calmer southern part of the bay Metamysidopsissp. dominated as well, but the community was completed with other mysid species, and early life stages of Brachyura and fish. Most striking was the general dominance of the mysid Metamysidopsis sp. in all the samples (97%, max. density of 62000 ind. 100 m-2) and the high amount of unknown species. Penaeid shrimp larvae, important for the local shrimp industry, were only found in very low densities during the sampling period (≈1%). Compared to other studies on the whole surf zone hyperbenthic community of sandy beaches, the average densities encountered in Valdivia Bay can be considered to be relatively high (2500--6000 ind. 100 m-2). Although limited in time and performed with a limited taxonomic resolution, the results indicate a high contribution of early life stages of invertebrate and fish species to the biodiversity of the intertidal hyperbenthic community in comparison with temperate regions.

Night feeding for high-yielding dairy cows in hot weather: effects on intake, milk yield and energy expenditure

Heat load impairs the feed intake and milk yield of dairy cows: The higher their milk yield and energy expenditure (EE), the larger the expected effect. Our objective was to examine the efficacy of feeding such cows at night, which avoiding their access to feed for 5 1/2 h during the hot hours of the day, to reduce the heat load upon them in a hot climate. Approximately 120 cows in a herd in a hot region in Israel were allocated to two treatments: day (DFT) or night (NFT) feeding, which differed only in the schedule of feed allocation. The experiment was conducted from May to September 2000 (118 days). The cows were group fed on a total mixed ration, and the daily amounts of feed offered and of orts collected were recorded. The daily group average milk yield was also recorded. Ten cows in each group were selected for individual measurements. The energy expenditure of these cows was estimated once before and three times during the experiment, by monitoring heart rates and measuring oxygen consumption. The rectal temperatures and respiration rates (RR) of these cows were measured in the morning and afternoon on two consecutive days in August. Cows on NFT had lower feed intake but similar milk yield to that of DFT cows, and NFT cows had better milk yield persistence over time. The effects of the temperature–humidity index (THI) on milk yield and intake were similar in the two treatments. The rectal temperature and respiration rate, and the increase in these measures from morning to afternoon hours, did not differ from DFT and NFT cows. The energy expenditure of NFT cows was lower than that of DFT cows, and their efficiency of energy utilization for milk production was higher.

A comparison of temporal variation of particle-bound polycyclic aromatic hydrocarbons (pPAHs) concentration in different urban environments: Tokyo, Japan, and Bangkok, Thailand

A comparative study of the real-time ambient concentrations of particle-bound polycyclic aromatic hydrocarbons (pPAHs) in the vicinity of roads in Tokyo (Japan) and in Bangkok (Thailand) in summertime was carried out by using a photoelectric aerosol sensor (PAS), which gives continuous signal in relation to the total amount of pPAHs concentration. The PAS output gave a good correlation to the total concentration of the selected PAHs determined by gas chromatography/mass spectrometry (GC/MS). This technique was then employed to observe temporal variation of total pPAHs. The measurements at roadside and general areas in Tokyo and in Bangkok were performed for seven consecutive days in August 2000, and in March 2001, respectively. The diurnal profiles of pPAHs concentrations in both cities were generally similar; explicit peak concentrations were observed in early morning in association with the traffic growth in the morning rush hours. A significant reduction occurred during the daytime was probably due to rising in the mixing zone. At roadside areas, the average pPAHs concentrations throughout the sampling period in Bangkok were significantly higher than those of Tokyo, owing to the larger contribution of vehicular traffic, especially heavy-duty vehicles, on the roads near the sampling site. Otherwise, all average concentrations in the general area in Tokyo were slightly higher than that of Bangkok. This was probably due to the percentage of road coverage in Tokyo being higher than that in Bangkok, creating a higher possibility for pPAHs evolving from road traffic, and the transportation pattern of the pPAHs in Tokyo showed a more broadly diffused profile than that of Bangkok. This suggests the widespread dispersion of pPAHs over the entire study area in Tokyo. At this study scale especially at the roadside, however, a high pPAHs concentration observed in Tokyo and in Bangkok was predominantly located at low wind speed, <1.0 and 0.4 m s −1, respectively, and along the direction from the roads.

Carbon assimilation and turnover in grassland vegetation using an in situ (13)CO(2) pulse labelling system.

A mobile laboratory was developed to administer a controlled flow of (13)C labelled CO(2) at ambient concentrations ( approximately 350 ppm) in the field. The stable isotope delivery (SID) system consists of an isotope-mixing unit with flow control to a series of 12 independent labelling chambers. In-line CPU controlled infrared gas analysers allow automated measurement of chamber CO(2) concentrations and gas flow management. A preliminary experiment was established on an upland pasture located at the NERC Soil Biodiversity experimental site, Sourhope, UK, in August 1999. The objective of this investigation was to determine the magnitude of pulse-derived C incorporation into a typical upland plant community. To achieve this, the SID system was deployed to pulse-label vegetation with CO(2) enriched with (13)C (50 atom %) at ambient concentrations ( approximately 350 ppm) on two consecutive days in August 1999. Samples of headspace CO(2), shoot and root were taken on four occasions over a period of 28 days after (13)C labelling. These materials were then prepared for (13)C/(12)C ratio determination by continuous-flow/combustion/isotope ratio mass spectrometry (CF-C-IRMS). Results showed that pulse derived CO(2)-C was assimilated at a rate of 128 +/- 32 microg g shoot-C hour(-1). Dynamic samplings showed that pulse-derived (13)C concentrations in the labelled plant tissues declined by 77.4 +/- 6% after 48 hours. The rapid decline in (13)C concentrations in plant matter was the result of C loss from the plant in the form of respired CO(2) and root exudates, and dilution by subsequent unlabelled C assimilates. This novel system offers considerable potential for in situ tracer investigations.

Influence of Shade Level, Wind Velocity, and Wind Direction on Interior Air Temperatures of Model Shade Structures

The effect of four shade levels (47%, 63%, 80%, and 91%) on air temperature was evaluated using twenty-four arch-shaped, open-ended shade structures oriented with their longitudinal axis north-south. Each model shade structure was 0.8 m wide, 1.85 m long, and 0.8 m high. Six replicates per treatment (shade level) were randomly assigned within the experimental area. Light levels were measured using PAR sensors. Temperatures were measured using copper-constantan thermocouples installed 0.6 m above ground level and 0.2 m from the north entrance. Data from twenty consecutive days in August, 1994 were analyzed. The highest air temperatures were measured under 80% shade. However, the average difference between 63% and 91% shade was less than 1C and the average difference between 47% and 80% shade was 1.4C. Wind direction and wind speed affected air temperature. Analysis of the data showed averaged air temperatures differed by 1.4C or less for all shade levels.

Shade Levels, Wind Speed, and Wind Direction Influence Air Temperature in Mini-shadehouses

The effect of four shade levels (47%, 63%, 80%, and 91%) on air temperature was evaluated using 24 arch-shaped, open-ended shadestructures oriented with their longitudinal axis in north–south direction. The mini-shadehouses were 80 × 185 × 80 cm (width × length × height). Six replicates per treatment (shade level) were randomly assigned within the experimental plot. Light levels were measured using Sunceram solar cells. Copper-Constantan thermocouples were installed 60 cm from ground level and 20 cm from the north entrance. The experiment was initiated in July 1994 and terminated in Oct. 1994. Data from 20 consecutive days in August were analyzed. Eighty percent shade had the highest air temperature; however, the average difference between 47%, 63%, and 91% shade was less than 1C. Wind direction and speed affected air temperature with north or south winds correlated with highest temperatures. Analysis of the data shows averaged air temperatures differed by ≤1C for all shade levels. Consequently, these structures may be used for replicated research studies involving plant growth.

Shade Levels, Wind Speed, and Wind Direction Influence Air Temperature in Mini-shadehouses

The effect of four shade levels (47%, 63%, 80%, and 91%) on air temperature was evaluated using 24 arch-shaped, open-ended shadestructures oriented with their longitudinal axis in north–south direction. The mini-shadehouses were 80 × 185 × 80 cm (width × length × height). Six replicates per treatment (shade level) were randomly assigned within the experimental plot. Light levels were measured using Sunceram solar cells. Copper-Constantan thermocouples were installed 60 cm from ground level and 20 cm from the north entrance. The experiment was initiated in July 1994 and terminated in Oct. 1994. Data from 20 consecutive days in August were analyzed. Eighty percent shade had the highest air temperature; however, the average difference between 47%, 63%, and 91% shade was less than 1C. Wind direction and speed affected air temperature with north or south winds correlated with highest temperatures. Analysis of the data shows averaged air temperatures differed by ≤1C for all shade levels. Consequently, these structures may be used for replicated research studies involving plant growth.

WINDEX—A New Index for Forecasting Microburst Potential

Abstract Microbursts are small-scale phenomena that have been viewed by many meteorologists as difficult to predict. However, there exists sufficient knowledge of microburst evolution by some in the research and operational communities that can be applied on the mesoscale to provide some warning to the public and aviation. This paper introduces a wind index or WINDEX that is based on this knowledge. It can be easily computed from soundings. The WINDEX is calculated from soundings known to have been taken in microburst environments and previously presented in the literature. The WINDEX can also be computed from surface observations using appropriate assumptions. This paper shows how to use the hourly surface-based WINDEX information (data) by showing its application to the infamous DFW microburst on 2 August 1985 and for three consecutive days in August 1993. The surface-based WINDEX analyses reveal a common pattern first noted by Ladd (1989); that is, microbursts primarily occur with new convection on old...

Fine structure in mesospheric wind fluctuations observed by the Arecibo UHF Doppler radar

Mesospheric short‐period wind fluctuations are investigated, using two sets of daytime wind data obtained on 15 consecutive days in August 1980 and March 1981 by the UHF Doppler radar at Arecibo, Puerto Rico (18.4°N, 66.8°W). The wind fluctuations are found to have a conspicuous recurring structure with periods of 10–20 min on a vertical scale less than a few kilometers. This structure, appearing as a “grill pattern” in the time‐height sections of wind velocity, seems to indicate that both upward and downward propagating waves with similar wave parameters exist simultaneously in this height range. The wave energy is shown to be almost equally distributed between the upward and downward propagating waves. The frequency power spectrum has a falling gradient gentler than that of the f−5/3 and even of the f−1 power law (f is frequency). Occurrence of these waves seems to be related to strong wind shears associated with long‐period internal inertia‐gravity waves present in the mesospheric region.

Counting the Same Populations of Large Tropical Mammals from the Ground and from the Air

The population of feral buffalo occupying 614 km2 of sedgelands and woodlands at Kapalga in the Northern Territory was counted from a fixed-wing aircraft, a helicopter and a vehicle on the ground over six consecutive days in August 1981. Aerial counts on sedgelands were 1.7-2.0 times greater than counts from ground level because of the greater lateral visibility; whereas counts from ground level of wooded habitats, much the commonest situation, were 1.7-1.8 times greater than aerial counts because ofthe reduced vertical visibility for the latter. The area of all habitats combined which would have to be sampled for a given precision differed little between the three techniques, but in wooded situations alone counting from the ground was twice as precise. Aerial counts repeated over consecutive days had a coefficient of variation of c. 10% for all habitats combined but c. 20% for wooded habitats alone. Counting from fixed-wing aircraft has great advantage in costs and logistics for extensive broad-scale surveys. Counting from a helicopter is more expensive but has advantages in a less extensive survey covering habitats in which visibility differs widely. Counting from the ground over small areas is cheap and has a particular advantage when detailed demographic data is required. The overall density of the introduced feral buffalo at Kapalga is 13 per km2 which is equivalent to a biomass of c. 5200 kg km-2. Such a biomass is high compared with wild indigenous tropical populations in Asia, at the lower end of the African range, and low by comparison with cattle in slightly drier habitats in Asia.

Intratree Dispersal of the Pecan Weevil 12

A study was conducted on the intratree dispersal of Curculio carvae (Horn) in 4 pecan trees about 35 ft high. For 4 consecutive days in August, 66 pecan weevils were released at each of 3 height levels (top = 35 ft, middle = 20 ft, and lowest limbs = 5 ft) of one quadrant of the 4 trees, starting with the north side of the tree and rotating clockwise each successive day. Weevils totaling 3168 were marked and released in this experiment: 198 weevils per quadrant (66 weevils for each of the 3 height levels) and 792 weevils per tree on each of the 4 trees. On the fifth day after the weevils were released in the first quadrant, recapture of the weevils was accomplished by jarring the lower half of the tree and by using a modified crane and platform for the upper portion of the tree. Approximately 10% of the marked weevils were recovered by the mechanical recapture method, and 7% by using insecticide after mechanically harvesting the weevils from the trees. Our study indicated that weevils move considerably in a tree—from the top of the tree to the lowest limbs and from the lower heights to the upper portion of the tree, as well as around the tree. The significance of dispersal of the pecan weevil to possible control measures is discussed.