Effects of Temperature and Host Density on the Rate of Increase of an Insect Parasite

Burnett, T.

doi:10.1086/281687

Cited by 51 publications

(24 citation statements)

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“…A curvilinear relationship of the number of hosts attacked to host density has been recorded for many insect parasitoids (e.g. Burnett, 1951Burnett, , 1954Burnett, , 1958UUyett, 1949UUyett, , 1950 although there is increasing evidence for sigmoid functional responses by invertebrates, especially when smaller prey or less preferred hosts are taken (Hassell et al, 1977; see also discussion later in this paper). The functional responses of both parasitoid species on their normal hosts in this study were CUMlinear, and the model used provided a good fit to the data in both cases.…”

Section: Discussionmentioning

confidence: 78%

Aspects of host—parasitoid interactions of two aphid parasitoids, Aphidius urticae (Haliday) and Aphidius uzbeckistanicus (Luzhetski) (Hymenoptera, Aphidiidae)

Dransfield¹

1979

Ecological Entomology

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1. Various aspects were studied of two host-parasitoid interactions: Aphidius urticae parasitizing the cocksfoot aphid Hyabptemides humilis and Aphidius uzbeckistanicus parasitizing the cereal aphid Metopolophium dirhodum The work formed part of a study o n the population dynamics of grassland and cereal aphids in Berkshire, England.2. A.uzbeckistanicus had a higher instantaneous attack rate but a slightly longer handling time than A.urticue. In both cases the functional response was curvilinear. 3.A.urticae was specific to Hhumilis and failed to develop in M.dirhodwn. A.uzbeckistanicus could develop successfully in H-humilis but the functional response was sigmoid and the progeny were less fecund than those reared on the natural host. This species showed a clear preference for M.dirhodum when supplied with mixtures of M.dirhodum and H.humi1is. 4.A.uzbeckistanicus had a faster rate of development and a lower developmental threshold than A.urticae, a situation paralleled by their natural hosts.5. The results are discussed in relation to field observations. A.uzbeckistmicus may have considerable potential for reducing cereal aphid numbers. However, its preference for M.dirhodum mitigates against a reservoir being maintained in the economically unimportant grassland aphid, H. humilis.

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Section: Discussionmentioning

confidence: 78%

Aspects of host—parasitoid interactions of two aphid parasitoids, Aphidius urticae (Haliday) and Aphidius uzbeckistanicus (Luzhetski) (Hymenoptera, Aphidiidae)

Dransfield¹

1979

Ecological Entomology

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“…Segundo Burnett (1951), parasitóides são mais eficientes 121 Dinâmica Populacional e Parasitismo de Himenópteros Parasitóides de Chrysomya megacephala como fator de mortalidade sob temperaturas entre 22 e 24°C do que a 16°C. Nos últimos dez anos na cidade do Rio de Janeiro, estas temperaturas foram mais comuns no inverno e final do outono (média igual a 21,7°C e 25°C, respectivamente) e, segundo Oliveira (1999), esta também foi a época de maior ocorrência do hospedeiro C. megacephala no Jardim Zooló-gico do Rio de Janeiro.…”

Section: Resultsunclassified

Dinâmica populacional e parasitismo de Himenópteros parasitóides de Chrysomya megacephala (Fabricius) (Diptera, Calliphoridae), no Rio de Janeiro, RJ

Carvalho¹,

Mello²,

d'Almeida³

2005

Rev. Bras. entomol.

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ABSTRACT. Population dynamics and parasitism of hymenopterans parasitoids of Chrysomya megacephala (Fabricius) (Diptera, Calliphoridae), in Rio de Janeiro city, Brazil. This study was carried out from August 1999 to July 2000 to evaluate the population dynamics and to know the parasitoids of Chrysomya megacephala (Fabricius, 1794) at the Instituto Oswaldo Cruz (IOC/ FIOCRUZ) and Jardim Zoológico, in Rio de Janeiro City. Samplings were conducted weekly with third instar larvae of the fly and putrefying ground beef. It was identified three species of hymenopterans parasitoids: Tachinaephagus zealandicus Ashmead, 1904 (Encyrtidae), Pachycrepoideus vindemiae (Rondani, 1875) (Pteromalidae) and Nasonia vitripennis (Walker, 1836) (Pteromalidae). In both sampling areas, T. zealandicus was the species with the highest parasitism rate of C. megacephala, followed by P. vindemiae and N. vitripennis. Parasitoid population decreases drastically in the summer (average temperature = 28°C; precipitation = 6.5 mm). The population peak of parasitoids was verified at the end of autunm and during the whole winter. At Jardim Zoológico, supply of garbage was a strong influence in the population dynamics of himenopteran parasitoids identified in this study, and the population peak in this area was verified in June and July 2000.

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“…However, Livdahl & Stiven (1983) pointed out statistical difficulties inherent in Rogers' model. Only 3 of these studies (Barnett, 1951(Barnett, , 1954Messenger, 1968) involved a hymenopterous parasitoid. A number of studies have examined variation in search and handling rates as a function of temperature for a wide variety of species (Barnett, 1951(Barnett, , 1954Messenger, 1968;Fedorenko, 1975;Frazer & Gilbert, 1976;Thompson, 1978;Everson, 1980 ;Mack & Smilowitz, 1982 ;MeCaffrey & Horsburgb, 1986).…”

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confidence: 99%

Functional response ofTelenomus reynoldsi [Hym.: Scelionidae] at five constant temperatures and in an artificial plant arena

Cave

Gaylor

1989

Entomophaga

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The functional response of Telenomus reynoldsi Gordh & Coker was determined at 5 constant temperatures using a dish arena. Functional response curves at all temperatures were of Holling's Type II. Handling rate increased linearly with increasing temperature, whereas the relationship of search rate to temperature was best described by a quadratic model. Search rate was highest at 32 ~ Using Rogers' random parasite equation, analysis of the functional response in a more complex arena containing an artificial plant provided estimates of search and handling rates that may be more appropriate in the field environment. Search rate was 6,680 cm2/day. Handling rate was 13 hosts/day.

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Effects of Temperature and Host Density on the Rate of Increase of an Insect Parasite

Cited by 51 publications

References 0 publications

Aspects of host—parasitoid interactions of two aphid parasitoids, Aphidius urticae (Haliday) and Aphidius uzbeckistanicus (Luzhetski) (Hymenoptera, Aphidiidae)

Aspects of host—parasitoid interactions of two aphid parasitoids, Aphidius urticae (Haliday) and Aphidius uzbeckistanicus (Luzhetski) (Hymenoptera, Aphidiidae)

Dinâmica populacional e parasitismo de Himenópteros parasitóides de Chrysomya megacephala (Fabricius) (Diptera, Calliphoridae), no Rio de Janeiro, RJ

Functional response ofTelenomus reynoldsi [Hym.: Scelionidae] at five constant temperatures and in an artificial plant arena

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