Part 2

Bee World, 2015

Fig. 1. Stationary insect collection traps with attached collection chamber. Fig. 2. Internal view of plastic ring with plywood bottom and blue insecticide holders Brou (1992) published instructions on how to fabricate a fruit-bait trap which captured live insect specimens. The inherent problem utilizing screen enclosed live-capture insect traps is that the captured target specimens are subject to immediate and constant predation by wasps, hornets, lizards, frogs, birds, squirrels, raccoons, opossums, and foxes. Over the past three decades I have designed, fabricated, and operated several dozens of stationary insect traps with some sort of enclosed collecting chamber for capturing moths, in particular Sphingidae, Catocala, Sesiidae, and also butterflies. These traps with collection chambers had one major drawback in that they were not very portable and were bulky and heavy as well. Efforts to lighten the weight or downsize the traps and attached collection chambers also resulted in lessening the performance and the amount of captures of the device. Brou and Brou (2008) first illustrated a bait trap with collection chamber on a stationary platform and that design has remained the best performing one we have used (Fig. 1). Necessary for the successful operation of this long term stationary trap design is the use of a potent insecticide or dispatching agent e.g. cyanide, being the optimum chemical used by entomologist for centuries.

Unnes Journal of Public Health

Live traps usually can only trap rats in the first day of trapping because the bait become not luring anymore after the first day of trapping. The purpose of this study was to determine the differences in lured rats number between uncombined bait trapping and combined bait trapping. This is a quasi-experimental study with a post-test only non-equivalent control group design. Each house has 5 traps setup with 6 replications. One trap was set with combined bait types (rice, anchovy, tofu and roasted coconut) and four other traps set with separated uncombined bait types; (1) rice, (2) anchovy, (3) tofu, (4) roasted coconut. The instruments used were house screening sheets, traps and observation sheets. The data obtained were tested with the Mann-Whitney test. The results showed that there were not significant differences in trapped rats number between combined bait and uncombined rice bait (p=0.748), between combined bait and uncombined anchovy bait (p=0.355), between combined bait ...

Australian Journal of Entomology, 1971

Pitfall traps containing baits and alcoholic preservatives were investigated, in the Solomon Islands and in South Australia, as methods for sampling ants and members of other groups that are active on the ground surface. Observations by previous workers that there may be attraction to preservatives used in traps were extended and a method of testing for it is suggested. Ants were not attracted to the preservatives used and when dealing with diverse ant faunas simple pitfalls appear to be preferable to baited traps.

2011

Bactrocera cucurbitae (Coquillett) and B. dorsalis (Hendel) (Diptera: Tephritidae) are important agricultural pests of the Pacific region. Detection of these species relies on traps baited with male-specific attractants, namely cue lure for B. cucurbitae and methyl eugenol for B. dorsalis. At present, these lures (plus naled, an insecticide) are applied in liquid form, although this procedure is time-consuming, and naled as well as methyl eugenol may pose human health risks. Recent field tests have shown that traps baited with a solid formulation (termed a wafer) that contains both lures (plus DDVP, an insecticide) capture as many or even more Bactrocera males than traps with the standard liquid lures. However, these previous studies used relatively large wafers, which would likely be inadequate for large-scale trapping programs, as fitting them into traps was inconvenient and time-consuming. The purpose of the present study was to compare captures of B. cucurbitae and B. dorsalis males in traps baited with liquids versus traps baited with different-sized wafers, which also contained different loadings of the male lures. Based on a series of field tests, we found that traps with a slightly smaller (medium-sized) wafer, which is more easily inserted and removed from the traps, performed as well or better than traps with the standard liquid lures or the original large-sized wafer. In addition, field tests with medium wafers showed that the DDVP level could be halved without any loss of trap effectiveness.

Wildlife Research, 1998

EDIS

Bed bugs have become an increasingly common pest problem throughout the United States. To discover whether bed bugs are present in a room or a piece of furniture, you can make interceptor traps out of commonly found household items and disposable plastic containers. This 4-page fact sheet was written by Benjamin A. Hottel, Rebecca W. Baldwin, Roberto M. Pereira, and Philip G. Koehler, and published by the UF Department of Entomology and Nematology, January 2014. ENY-2029/IN1022: How to Make a Bed Bug Interceptor Trap out of Common Household Items (ufl.edu)

Journal of Material Culture, 2019

Traps connect not only predator and prey, but mind and materiality, technology and landscape, and infrastructure and ecology. Through them bodies, knowledge practices, materials, and environments are assembled in transformative encounters which, because of their lethal agency, have emotive and moral force. In this Introduction we explore the conceptual bridges and disciplinary admixtures invited by ethnographic attention to traps. We review a history of attention to traps, which is in the main a history of neglect and epistemological bias. As humble hunting technologies traps have been secondary in status to the heroic chase and the lifeways of trappers at the frontiers of empires have been neglected. Meanwhile traps have featured as archetypes and prototypes in evolutionist discourses focusing on technology, and human crafty intelligence in its invention and advancement. We trace these threads from the nineteenth century to contemporary anthropology and archaeology, and propose conceptual and practical lines for future analysis and research collaboration.

2001

This paper addresses the issue of trap design for sensorless automated assembly. First, we present a simple algorithm that determines in O(nm (nm) log(nm)) time whether an n-sided polygonal part will fall through an m-sided polygonal trap. We then introduce the notion of a minimal trap for a polygonal part, and develop an O(n 4+" ) algorithm that designs a family of minimal feeders built from these traps. The algorithm is complete in the sense that we can always nd a feeder, provided that one exists that rejects and supports the appropriate poses of the part with a little tolerance. Finally, we describe how to modify our minimal traps to ensure the part will actually fall through.

This model consists of a 600 ml plastic cup with a solution of water and alcohol that sits in a hole cut into a 25 cm diameter plastic dish, which serves as the floor for the trap. That first dish is tied up with nylon to a second dish that acts as a roof, from which a gauze bait bag containing approximately 25 ml of human dung is suspended. The en- tire trap is attached to a nylon fish line that enables the researcher to change the elevation, as needed.