First record of <i>Bracon lissogaster</i> (Hymenoptera: Braconidae) in Canada – a potentially important parasitoid of <i>Cephus cinctus</i> (Hymenoptera: Cephidae) in the prairies

Cárcamo, H. A.; Weaver, David K.; Meers, Scott; Beres, Brian L.; Mauduit, A.L.

doi:10.1080/09583157.2012.658355

Cited by 6 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bracon cephi (Gahan) and Bracon lissogaster Muesebeck (Hymenoptera: Braconidae) are important parasitoid species in wheat cropping systems. They are the only species known to attack and successfully suppress damaging populations of Cephus cinctus Norton (Hymenoptera: Cephidae), which is the most destructive pest of wheat in the Northern Great Plains of North America (Morrill et al ., ; Runyon et al ., ; Weaver et al ., , ; Beres et al ., ; Peterson et al ., ; Rand et al ., ; Cárcamo et al ., ; Buteler et al ., ; Adhikari et al ., ; Bekkerman & Weaver, ). Parasitism can kill up to 34% of C. cinctus larvae in a cohort and 12% of this mortality is irreplaceable, meaning that the mortality caused by B. cephi or B. lissogaster cannot be replaced by another mortality factor (Buteler et al ., ).…”

Section: Introductionmentioning

confidence: 99%

“…Parasitism can kill up to 34% of C. cinctus larvae in a cohort and 12% of this mortality is irreplaceable, meaning that the mortality caused by B. cephi or B. lissogaster cannot be replaced by another mortality factor (Buteler et al ., ). However, the occurrence and abundance of these parasitoid species vary greatly among wheat fields and regions, compromising their effectiveness in the reliable management of this pest (Morrill et al ., ; Cárcamo et al ., ; Davis, ; Adhikari et al ., ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of sucrose supplementation and generation on life‐history traits of Bracon cephi and Bracon lissogaster, parasitoids of the wheat stem sawfly

et al. 2019

View full text Add to dashboard Cite

Knowledge of the life-history traits that influence the reproductive success of parasitoids could provide useful information to enhance their effectiveness as biological control agents. The wheat stem sawfly Cephus cinctus Norton (Hymenoptera: Cephidae) is a major pest of wheat in the Northern Great Plains of North America. The bivoltine, sympatric and specialist parasitoids Bracon cephi (Gahan) and Bracon lissogaster Muesebeck (Hymenoptera: Braconidae) are the only species known to attack C. cinctus in wheat. In the present study, we quantify the body size, longevity, egg load and egg volume of B. cephi and B. lissogaster aiming to test whether these life-history traits differ among adult females developing from overwintering and summer generation larvae. We also investigate the effect of sucrose supplementation on the same reproductive parameters. The results obtained show no differences between life-history traits of B. cephi developing from the overwintering and summer generations. By contrast, the egg load of B. lissogaster is significantly different between generations, with overwintered females producing 1.2-fold more eggs than summer individuals. Sucrose feeding has a strong positive effect on life-history traits of both parasitoid species and generations. The longevity of sucrose-fed females of B. cephi is increased three-fold, whereas the survival of B. lissogaster is increased almost nine-fold. Females of B. cephi treated with sucrose have four-fold more mature eggs, whereas the egg load of B. lissogaster is increased 1.15-to 1.25-fold with sugar feeding. Only B. cephi females increase egg volume with sucrose. The present study provides valuable insights on the life-history and nutritional requirements of these two important parasitoid species.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of sucrose supplementation and generation on life‐history traits of Bracon cephi and Bracon lissogaster, parasitoids of the wheat stem sawfly

et al. 2019

View full text Add to dashboard Cite

show abstract

“…2004, 2005; Cárcamo et al . 2012), currently attack C. cinctus larvae in wheat fields. These parasitoids are bivoltine; first generation larvae of both species develop rapidly, adults emerge and go on to a partial or complete second generation (Nelson and Farstad 1953; Somsen and Luginbill 1956).…”

Section: Introductionmentioning

confidence: 99%

“…Cephus cinctus populations in feral grasses are hosts for several species of presumably native parasitoids (Ainslie 1929). Two braconid species, Bracon cephi (Gahan) (Davis et al 1955;Holmes et al 1963;Morrill et al 1994;Morrill and Gabor 1998) and B. lissogaster Muesebeck (Hymenoptera: Braconidae) (Runyon et al 2001(Runyon et al , 2002Weaver et al 2004Weaver et al , 2005Cárcamo et al 2012), currently attack C. cinctus larvae in wheat fields. These parasitoids are bivoltine; first generation larvae of both species develop rapidly, adults emerge and go on to a partial or complete second generation (Nelson and Farstad 1953;Somsen and Luginbill 1956).…”

Section: Introductionmentioning

confidence: 99%

Assessing phenological synchrony between the Chinese sawfly, Cephus fumipennis (Hymenoptera: Cephidae), its egg-larval parasitoid, Collyria catoptron (Hymenoptera: Ichneumonidae), and the North American sawfly, Cephus cinctus: implications for biological control

Rand

Morrill²,

Runyon³

et al. 2015

Can Entomol

View full text Add to dashboard Cite

Many pest and beneficial insects overwinter as larvae in a state of diapause, with development resuming in the spring. In these cases, rates of post-diapause development of parasitoids must be synchronised with the vulnerable life stages of their hosts. Phenological asynchrony between introduced parasitoids and their targeted hosts has limited the success of some biological control efforts. Here, we assess the potential synchrony between Collyria catoptron Wahl (Hymenoptera: Ichneumonidae), a parasitoid of the Chinese wheat stem sawfly, Cephus fumipennis Eversmann (Hymenoptera: Cephidae), which is being considered as a biological control against a novel host species, Cephus cinctus Norton, in North America. We compared development timing and emergence patterns of both native and exotic species of sawflies with that of the parasitoid. We found that the mean number of days between termination of larval diapause and adult eclosion varied by less than one day across species, and patterns of emergence were also similar. The rate of development of this egg-larval parasitoid was within the range necessary to attack C. cinctus eggs. Furthermore, the development of C. cinctus from western Montana, United States of America most closely matched that of the parasitoid, suggesting western Montana as a possible release area.

show abstract

“…lissogaster Muesebeck (Morrill et al 1994, Weaver et al 2004, Cárcamo et al 2012, while in other regions of the world, C. pygmaeus and C. fumipennis are mainly killed by egg-larval parasitoids of the genus Collyria (Wahl et al 2007, Shanower and. Attempts at classical biological control of WSS using Collyria coxator (Villers) from C. pygmaeus (reviewed in Shanower and Hoelmer 2004) and Collyria catoptron (Wahl) from C. fumipennis failed due to host incompatibility (Rand et al 2016a), even with favorable attributes for success (Rand et al 2016a, b).…”

mentioning

confidence: 99%

Characterization of resistance to the wheat stem sawfly in spring wheat landrace accessions from targeted geographic regions of the world

et al. 2017

View full text Add to dashboard Cite

Plant landraces have long been recognized as potential gene pools for biotic and abiotic stressrelated genes. This research used spring wheat landrace accessions to identify new sources of resistance to the wheat stem sawfly (WSS) (Cephus cinctus Norton), an important insect pest of wheat in the northern Great Plains of North America. Screening efforts targeted 1,409 accessions from six geographical areas of the world where other species of grain sawflies are endemic or where a high frequency of accessions possesses the resistance characteristic of solid stems. Resistance was observed in approximately 14% of accessions. Half of the lines displayed both antixenosis and antibiosis types of resistance. Among the resistant accessions, 41% had solid or semi-solid stems. Molecular genetic screening for haplotypes at the solid stem QTL, Qss.msub.3BL, showed that 15% of lines shared the haplotype derived from 'S-615', the original donor of the solid stem trait to North American germplasm. Other haplotypes associated with solid stems were also observed. Haplotype diversity was greater in the center of origin of wheat. Evaluation of a representative set of resistant landrace accessions in replicated field trials at four locations over a three year period identified accessions with potential genes for reduced WSS infestation, increased WSS mortality, and increased indirect defense via parasitoids. Exploitation of distinct types of plant defense will expand the genetic diversity for WSS resistance currently present in elite breeding lines.

show abstract

First record of Bracon lissogaster (Hymenoptera: Braconidae) in Canada – a potentially important parasitoid of Cephus cinctus (Hymenoptera: Cephidae) in the prairies

Cited by 6 publications

References 6 publications

Effects of sucrose supplementation and generation on life‐history traits of Bracon cephi and Bracon lissogaster, parasitoids of the wheat stem sawfly

Effects of sucrose supplementation and generation on life‐history traits of Bracon cephi and Bracon lissogaster, parasitoids of the wheat stem sawfly

Assessing phenological synchrony between the Chinese sawfly, Cephus fumipennis (Hymenoptera: Cephidae), its egg-larval parasitoid, Collyria catoptron (Hymenoptera: Ichneumonidae), and the North American sawfly, Cephus cinctus: implications for biological control

Characterization of resistance to the wheat stem sawfly in spring wheat landrace accessions from targeted geographic regions of the world

Contact Info

Product

Resources

About