Observations on the European Pine Sawfly, <i>Neodiprion sertifer</i> (Geoff.), and its Parasites in Southern Ontario

Griffiths, K. J.

doi:10.4039/ent91501-8

Cited by 37 publications

(65 citation statements)

References 12 publications

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“…First, these three species provide the best documented examples of parsivoltine emergence patterns in bees. Indeed, among Hymenoptera, detailed examples of parsivoltinism are available only for diprionid sawflies (Prebble 1941, Griffiths 1959, Sullivan and Wallace 1967, Wallace and Sullivan 1974 (Torchio 1975), Osmia marginipennis Cresson (Parker 1980), and Hoplitis biscutellae (Cockerell) (Rust 1980) ).…”

Section: Discussionmentioning

confidence: 99%

Parsivoltinism in Three Species of Osmia Bees

Torchio

Tepedino

1982

Psyche: A Journal of Entomology

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Section: Discussionmentioning

confidence: 99%

Parsivoltinism in Three Species of Osmia Bees

Torchio

Tepedino

1982

Psyche: A Journal of Entomology

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“…

Can. sertifer is a univoltine egg-overwintering sawfly (Griffiths 1959). 101: 785-818 (1969) A generalized competition model for predators or parasites was developed from data obtained from a specific parasite-host system.

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mentioning

confidence: 99%

A Competition Submodel for Parasites and Predators

Griffiths

Holling

1969

Can Entomol

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Can. Ent. 101: 785-818 (1969) A generalized competition model for predators or parasites was developed from data obtained from a specific parasite-host system. It was structured in three parts. The first simulates the effects of exploitation, where the number of attacks and their distribution among prey or hosts determine how many prey or hosts survive. Since the negative binomial distribution described these distributions comirrentlp, the exploitation submodel was developed from it. T h e second portion of the competition model concerned interference between searching predators and parasites. Although interference is a universal pl~enomcnon, we were able to show that its effects become important only at predator densities much higher than those that occur in nature. Thus the interference component can be essentially ignored. The third and final component concerned the outcome of competition between parasite progeny within their host. It was developed from Fujii's competition model which allows for the simulation of both scramble and contest types of competition.These three submodels of competition were combined and coupled with a previously published model of the effects of prey density on attack. In this way the full consequences of different prey and predator densities could be simulated using a model whose constituent parts had been carefully rested for descriptive aderluacy. The simulations showed the way individual predator attack, per cent predation, and progeny production were affected by different degees of contagion in the disrribution of attacks, by scramble vs. contest competition, and by the degree to which parasites could avoid hosts already attacked.Volume 101 THE CANADIAN ENTOMOLOGIST 787 attacking the European sawfly, Neodiprion sertifer (Geoff.). Both of these species were originally Palaearctic, but both are now established in eastern North America (Griffiths 196 1 ;Lyons 1964).N . sertifer is a univoltine egg-overwintering sawfly (Griffiths 1959). Cocooned larvae, the stage attacked by P. basizonus, can be obtained in large numbers simply by mass-rearing nearly-mature feeding-stage larvae until spin-up. The cocoons can then be stored at 0°C until needed, with very little mortality and no development.An attacking P. basizonus inserts its ovipositor through the sawfly cocoon, paralyzes the prepupa within, and lays a single egg in the cavity between the prepupa and the cocoon's inner surface (Griffiths 1961). P. basizonus is an ideal

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“…Economic damage in North America has been recorded on P. strobus L., P. sylvestris, and P. mugo Turra, well as several native North American Pinus spp. (Schaffner 1943, Craighead 1950, Benjamin et al 1955, Griffiths 1959, Baker 1972. Since its introduction, the species has spread westward at least to North Dakota (Van Driesche et al 2012) and Saskatchewan, Canada (Langor, unpublished data).…”

Section: Neodiprion Sertifer (Geoffroy 1785)mentioning

confidence: 99%

Sawflies (Hymenoptera, Symphyta) newly recorded from Washington State

Looney¹,

Smith²,

Collman³

et al. 2016

JHR

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Examination of museum specimens, unpublished collection data, and field surveys conducted between 2010 and 2014 resulted in records for 22 species of sawflies new to Washington State, seven of which are likely to be pest problems in ornamental landscapes. These data highlight the continued range expansion of exotic species across North America. These new records also indicate that our collective knowledge of Pacific Northwest arthropod biodiversity and biogeography is underdeveloped, even for a relatively well known and species-poor group of insects. Notable gaps in the knowledge of Washington State's Symphyta remain for the Olympic Peninsula, the Cascade Mountain Range, and the arid interior of the state. Washin gton's shrub-steppe appears to be particularly poorly surveyed for sawflies.

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Observations on the European Pine Sawfly, Neodiprion sertifer (Geoff.), and its Parasites in Southern Ontario

Cited by 37 publications

References 12 publications

Parsivoltinism in Three Species of Osmia Bees

Parsivoltinism in Three Species of Osmia Bees

A Competition Submodel for Parasites and Predators

Sawflies (Hymenoptera, Symphyta) newly recorded from Washington State

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