Latitudinal variation in Dendroctonus ponderosae (Coleoptera: Scolytidae) development time and adult size

Abstract

The sex pheromone of the obliquebanded leafroller, Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae)

Phylogenetic Analysis Reveals New Genus of Ipini Bark Beetle (Scolytidae)

“…The shorter time period required for P. mexicanus to reach maturity in our study may represent an adaptation to a colder environment. Faster development in northern climates has been shown for other species with shorter development periods dictated by cooler summers (Bentz et al 2001).…”

Developmental differences of local populations of alfalfa weevil (Hypera postica) (Coleoptera: Curculionidae)

“…Furthermore, the number of laid eggs differs among populations (Coles and Day, 1977). Besides these previously studied traits, the survival percentage and the mean developmental time of each life stage represent promising candidate traits that can be studied under laboratory conditions (Harcourt, 1969;Pöckl and Humpesch, 1990;Bentz et al, 2001;Milbrath et al, 2007). In one of the earliest comparative analyses of life history traits of alfalfa weevil populations, Schroder and Steinhauer (1976) compared three European populations with American populations.…”

Seasonal flight patterns of Ips typographus in southern Sweden and thermal sums required for emergence

“…The required thermal sums for flight, development and emergence have been shown to differ between regions as an adaptation to local conditions (Netherer & Pennerstorfer 2001;Bentz et al 2001Bentz et al , 2011. Thermal sums for the developmental stages of I. typographus in southern Sweden are, however, unavailable, and information on seasonal flight patterns here is also sparse (Trägårdh, 1939;Eidmann and Klingström, 1990).…”