scholarly journals Comparative Study of Egg Parasitism by Gryon pennsylvanicum (Hymenoptera: Scelionidae) on Two Squash Bug Species Anasa tristis and Anasa armigera (Hemiptera: Coreidae)

2018 ◽  
Author(s):  
Mary L Cornelius ◽  
Jing S Hu ◽  
Bryan T Vinyard
Keyword(s):  
Comparative Study ◽  
Anasa Tristis ◽  
Squash Bug ◽  
Egg Parasitism

scholarly journals Use of Flowering Plants to Enhance Parasitism and Predation Rates on Two Squash Bug Species Anasa tristis and Anasa armigera (Hemiptera: Coreidae)

Insects ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 318 ◽  
Author(s):  
Cornelius ◽  
Vinyard ◽  
Gates
Keyword(s):  
Egg Parasitoid ◽  
Egg Masses ◽  
Anasa Tristis ◽  
Future Studies ◽  
Squash Bug ◽  
Parasitism Rates ◽  
Adult Parasitoid ◽  
Egg Parasitism ◽  
Fagopyrum Esculentum Moench ◽  
Predation Rates

A two-year study evaluated the effect of a flowering border of buckwheat Fagopyrum esculentum Moench on rates of egg parasitism, egg predation and adult parasitism on two squash bug species, Anasa tristis (DeGeer) and Anasa armigera Say, by comparing rates in squash fields with and without a flowering border. Furthermore, we evaluated whether there was an edge effect by comparing parasitism and predation rates in plots located in the corner of a squash field with plots located in the center of a squash field for fields with and without a flowering border. The egg parasitism rates were not affected by either treatment (flowering border or control) or plot location (edge or center). Anasa armigera egg masses only accounted for 4.3% of the total egg masses collected. The egg parasitism rates increased gradually throughout the season, peaking in the last week of August in 2017 at 45% for A. tristis egg masses. The most common egg parasitoid recovered was Gryon pennsylvanicum (Ashmead) followed by Ooencyrtus anasae (Ashmead). Adult parasitism was not affected by treatment, but A. tristis adult parasitism rates were higher in plots located on the edge of squash fields compared with plots located in the center of squash fields in 2016. Since adult parasitoid, Trichopoda pennipes (Fabricius) flies were observed visiting buckwheat flowers, future studies could explore the possibility that the flowering buckwheat may have a more impact on adult parasitism if there was a greater distance between fields with and without a flowering border.

A NEW SQUASH BUG

1898 ◽  
Vol 30 (9) ◽  
pp. 239-240
Author(s):  
F. H. Chittenden
Keyword(s):  
District Of Columbia ◽  
Department Of Agriculture ◽  
Anasa Tristis ◽  
Squash Bug ◽  
Field Investigations ◽  
The Common ◽  
College Station ◽  
Official Work

In the course of an investigation of insects affecting cucurbits, begun in a preliminary way in the season of 1897, as a part of the official work of the Division of Entomology of the Department of Agriculture, it was found that we have in addition to the common squash bug, Anasa tristis, DeG., a second species sufficiently resembling it as to have readily escaped the notice of the average observer, but at the same time quite distinct in all its stages. This species is Anasa armigera, Say, and it was first observed on cucurbits by the writer July 12, near colonial Beach, Va., where it occured on cucumbers. Afterward it was taken by the writer and Mr. F. C. Pratt, of the Division of Entomology, who has assisted in field investigations and collections on different cucurbits, at Ballston, Va., Poolesville and Seat pleasant, Md., and on the Conduit Road and at Tenleytown, D. C. At the last mentioned place it occured in great abudance on a late crop of cucumbers and watermelons. As late as the 29th of September, all stages of the insect were found, including the egg. The present year the species was found to be nearly as abundant in some locaties as the common squash bug. Such was the case at Marshall Hall, Md., and in one locality in the District of columbia. It was also observed on squash at College Station and Kensington, Md., and on cucumber at Cabin John, Md.

scholarly journals The importance of environmentally-acquired bacterial symbionts for the squash bug (Anasa tristis), a significant agricultural pest

2021 ◽  
Author(s):  
Tarik S. Acevedo ◽  
Gregory P. Fricker ◽  
Justine R Garcia ◽  
Tiffany Alcaide ◽  
Aileen Berasategui ◽  
...  
Keyword(s):  
Horizontal Transmission ◽  
Development Stage ◽  
Bacterial Symbionts ◽  
Complete Understanding ◽  
Anasa Tristis ◽  
Squash Bug ◽  
The Family ◽  
Insect Symbionts ◽  
Midgut Crypts ◽  
Bacterial Plant Pathogen

Most insects maintain associations with microbes that shape their ecology and evolution. Such symbioses have important applied implications when the associated insects are pests or vectors of disease. The squash bug, Anasa tristis (Coreoidea: Coreidae), is a significant pest of human agriculture in its own right and also causes damage to crops due to its capacity to transmit a bacterial plant pathogen. Here, we demonstrate that complete understanding of these insects requires consideration of their association with bacterial symbionts in the family Burkholderiaceae. Isolation and sequencing of bacteria housed in midgut crypts in these insects indicates that these bacteria are consistent and dominant members of the crypt-associated bacterial communities. These symbionts are closely related to Caballeronia spp. associated other true bugs in the superfamiles Lygaeoidea and Coreoidea. Fitness assays with representative Burkholderiaceae strains indicate that the association can significantly increase survival and decrease development time, though strains do vary in the benefits that they confer to their hosts, with Caballeronia spp. providing the greatest benefit. Experiments designed to assess transmission mode indicate that unlike many other beneficial insect symbionts, the bacteria are not acquired from parents before or after hatching but are instead acquired from the environment after molting to a later development stage. The bacteria do, however, have the capacity to escape adults to be transmitted to later generations, leaving the possibility for a combination of indirect vertical and horizontal transmission.

scholarly journals The Importance of Environmentally Acquired Bacterial Symbionts for the Squash Bug (Anasa tristis), a Significant Agricultural Pest

2021 ◽  
Vol 12 ◽  
Author(s):  
Tarik S. Acevedo ◽  
Gregory P. Fricker ◽  
Justine R. Garcia ◽  
Tiffanie Alcaide ◽  
Aileen Berasategui ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Horizontal Transmission ◽  
Bacterial Symbionts ◽  
Complete Understanding ◽  
Anasa Tristis ◽  
Squash Bug ◽  
The Family ◽  
Insect Symbionts ◽  
Midgut Crypts ◽  
Bacterial Plant Pathogen

Most insects maintain associations with microbes that shape their ecology and evolution. Such symbioses have important applied implications when the associated insects are pests or vectors of disease. The squash bug, Anasa tristis (Coreoidea: Coreidae), is a significant pest of human agriculture in its own right and also causes damage to crops due to its capacity to transmit a bacterial plant pathogen. Here, we demonstrate that complete understanding of these insects requires consideration of their association with bacterial symbionts in the family Burkholderiaceae. Isolation and sequencing of bacteria housed in the insects’ midgut crypts indicates that these bacteria are consistent and dominant members of the crypt-associated bacterial communities. These symbionts are closely related to Caballeronia spp. associated with other true bugs in the superfamilies Lygaeoidea and Coreoidea. Fitness assays with representative Burkholderiaceae strains indicate that the association can significantly increase survival and decrease development time, though strains do vary in the benefits that they confer to their hosts, with Caballeronia spp. providing the greatest benefit. Experiments designed to assess transmission mode indicate that, unlike many other beneficial insect symbionts, the bacteria are not acquired from parents before or after hatching but are instead acquired from the environment after molting to a later developmental stage. The bacteria do, however, have the capacity to escape adults to be transmitted to later generations, leaving the possibility for a combination of indirect vertical and horizontal transmission.

Interrelations of the Squash Bug, Anasa tristis, and Six Varieties of Squash (Cucurbita Spp.)1

1962 ◽  
Vol 55 (6) ◽  
pp. 912-919 ◽  
Author(s):  
Emiliana S. Novero ◽  
Reginald H. Painter ◽  
Charles V. Hall
Keyword(s):  
Anasa Tristis ◽  
Squash Bug

Rapid adaptation of squash bug, Anasa tristis, populations to a resistant cucurbit cultivar

1998 ◽  
Vol 89 (1) ◽  
pp. 65-70 ◽  
Author(s):  
David C. Margolies ◽  
James R. Nechols ◽  
Elizabeth A. Vogt
Keyword(s):  
Rapid Adaptation ◽  
Anasa Tristis ◽  
Squash Bug
Sign in / Sign up

Export Citation Format

Share Document