TECHNIQUE FOR LABELING INDIVIDUAL PISSODES STROBI (COLEOPTERA: CURCULIONIDAE) FOR MARK-RECAPTURE STUDIES

Abstract

The Canadian Entomologist 131: 115 -129 (1999) Delphastus catalinae (Horn) (Coleoptera: Coccinellidae) was mass reared to support field studies addressing augmentation and colonization for control of Bemisia argentifolii Bellows and Perring (Homoptera: Aleyrodidae) in southern California. Beetles were reared on B. argentifolii infested poinsettia plants grown inside greenhouses located in northern California. Potted plants, reared from rooted cuttings, were cycled through the rearing system over ca. a 12-week period, then discarded. A total of 174 245 adult beetles were harvested over a 20-week period. Each plant averaged 46 adult beetles (range 21-89) over the same period of time. Harvesting strategies were investigated using a computer simulation model based upon published and hypothesized reproduction and survivorship parameters. Results suggest that removal of approximately 50% of adults per week produced a stable and maximum production of beetles. Actual harvest rates were between 40 and 60% of available beetles. The cost of producing each adult was estimated at US$0.22, with the major cost being labor at 86% of the total. Pickett, C.H., K.A. Casanave, S.E. Schoenig et K.M. Heinz. 1999. ~l e v a~e de Delphastus catalinae (Coleoptera : Coccinellidae): expkrience pratique et mod6lisation. The Canadian Entomologist 131 : 115-129. Nous avons procCdC B 1'Clevage en masse de Delphastus catalinae (Coleoptera: Coccinellidae) pour vCrifier les donnCes obtenues en nature sur l'augmentation et la colonisation de ces insectes destinCs B assurer le contr6le de Bemisia argentifolii, Bellows et Perring (Homoptera; Aleyrodidae) dans le sud de la Californie. Les coccinelles ont Ct C ClevCes sur des plants de poinsettia infest& de B. argentifolii en serre dans le nord de la Californie. Les plants en pot, cultivCs B partir de boutures portant des racines, ont Ct C gardCs pendant tout un cycle, soit environ 12 semaines, puis jetCs. Au total, 174 245 colCopt&res adultes ont Ct C obtenus au cours d'une PCriode de 20 semaines. Chaque plant a donne! en moyenne 46 coccinelles adultes (21-89) pendant cette pCriode. Les stratkgies de rCcolte des adultes ont Ct C exami-nCes au moyen d'un modble de simulation B l'ordinateur bask sur des parambtres de reproduction et de survie hypothCtiques ou tirCs de la littkrature. Les rCsultats indiquent que la rCcolte d'environ 50% des adultes chaque semaine assure une production stable et maximale de coccinelles. Les taux rCels de rCcolte ont Ct C de 40% B 60% des colCopt&res prksents. Le coiit de production d'un adulte a Ct C estimC B $0,22, la plus grande partie due B la main d'oeuvre (86% au total). [Traduit par la RCdaction]

Movement patterns ofRhyssomatus lineaticollisSay (Coleoptera: Curculionidae) within and amongAsclepias syriaca(Asclepiadaceae) patches in a fragmented landscape

“…Paint droplets were applied using the head of a 000 insect pin. In 2000, beetles were numbered using an Ultra‐fine Sharpie ® permanent marker on a coating of Liquid Paper ® correction fluid placed on an elytron in a manner similar to the procedure of McIntosh (1999). Each site was assigned a specific correction fluid colour enabling between‐site moves to be easily distinguished.…”

Methods for Marking Insects: Current Techniques and Future Prospects

“…Wineriter & Walker (229) tested 26 paints and inks on two cricket and one beetle species and found that non-water-soluble paints had the greatest durability on their surfaces. An ideal paint or ink marker should be durable, nontoxic, easy to apply, quick drying, lightweight, available in several highly visible colors, and resistant to peeling or chipping (144,222).…”

“…The major advantages of using paint or ink to mark individual insects are that these techniques are inexpensive and the specimens can be nondestructively sampled and resampled over the course of a long-term study (143). Several authors report that individual markers are durable and easy to apply (93,113,144,158).…”

Paint marking social wasps: an evaluation of behavioral effects and toxicity

“…Among 26 inks tested on the surface of two cricket and one beetle species, oil‐based inks had the greatest durability (Wineriter & Walker, ). These inks can be used to make a simple numbering system (Service, ; McIntosh et al., ) or elaborate coding systems (Brenner & Patterson, ) and inks are considered to be durable and easy to apply (McIntosh, ). Despite the advantages, these techniques are limited because (1) inks are often toxic to the insects (Southwood, ) and (2) marking techniques can affect insect behavior (Chang, ).…”