Gall Aphids on Poplar in Alberta II. Periods of Emergence from Galls, Reproductive Capacities, and Predators of Aphids in Galls

In southern Alberta there are several species of aphids that produce galls on poplar trees (Harper, 1959). These aphids are all in the subfamily Eriosomatinae and in the genera Pemphigus Hartig, Thecabius Koch, and Mordwilkoja Del. G. Two of the species are of economic importance, Pemphigus betae Doane, a pest of sugar beets in Alberta and parts of United States (Harper, 1957; Maxson, 1916; Parker, 1915), and Pemphigus populitransversus Riley, a serious pest of crucifers in Texas (Wene and White, 1953). Both species overwinter on poplar as eggs. In spring the fundatrix emerges from the egg and feeds on the poplar leaf, initiating a gall in which the winged fundatrigeniae are produced. During the summer the fundatrigeniae migrate to the secondary host where they produce the wingless alienicolae; in the fall these in turn produce the winged sexuparae, which migrate to the poplars where they produce the wingless sexuales. The female sexuales, after mating, deposit eggs on the poplars to complete the life cycle (Harper, 1957; Jones and Gillette, 1918; Parker, 1914).

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The soybean cyst nematode: pervasive and destructive to soybean production in the mid-western United States.

10.1079/9781789247541.0017 ◽

2021 ◽

pp. 117-124

Author(s):

Gregory L. Tylka

Keyword(s):

United States ◽

Life Cycle ◽

Soybean Cyst Nematode ◽

Plant Pathogens ◽

Management Practices ◽

Heterodera Glycines ◽

Economic Importance ◽

Cyst Nematode ◽

Future Outlook ◽

Damage Symptoms

Abstract This chapter focuses on the economic importance, host range, geographical distribution, damage symptoms and biology and life cycle of the soyabean cyst nematode, Heterodera glycines, a pervasive and destructive pest to soyabean production in the mid-western USA. Some information on its interaction with other plant pathogens, the efficacy and optimization of some recommended integrated nematode management practices and future outlook and research requirements are also presented.

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Root-knot and reniform nematodes: double trouble for soybeans in the southern United States.

10.1079/9781789247541.0018 ◽

2021 ◽

pp. 125-131

Author(s):

Edward J. Sikora

Keyword(s):

United States ◽

Life Cycle ◽

Host Range ◽

Geographical Distribution ◽

Management Practices ◽

Economic Importance ◽

Southern United States ◽

Rotylenchulus Reniformis ◽

Future Outlook ◽

Reniform Nematodes

Abstract This chapter focuses on the economic importance, host range, geographical distribution, symptoms of damage and biology and life cycle of root-knot and reniform nematodes (Meloidogyne spp. and Rotylenchulus reniformis) infesting soyabeans in southern USA. Some information on the efficacy and optimization of some recommended integrated nematode management practices and future outlook and research requirements are also presented.

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A Wireworm Glyphonix bimarginatus (Schaeffer) (Insecta: Coleoptera: Elateridae)

EDIS ◽

10.32473/edis-in1233-2019 ◽

2019 ◽

Vol 2019 (2) ◽

pp. 4

Author(s):

Dakshina R. Seal ◽

Rafia A. Khan

Keyword(s):

United States ◽

Organic Matter ◽

Life Cycle ◽

The United States ◽

Economic Importance ◽

Click Beetles ◽

Larval Stages ◽

Click Beetle ◽

The World ◽

Germinating Seeds

Glyphonix bimarginatus (Figure 1) is a common click beetle pest of various economically important crops. The larvae of click beetles (Coleoptera: Elateridae) are elongated, wire-like and commonly known as wireworms. Wireworms are considered as subterranean economic pests during their larval stages in many parts of the world including the United States. The larvae of Glyphonix bimarginatus are commonly found with larvae of other click beetles in the field. Larvae of Glyphonix bimarginatus occurs in soil rich in organic matter and rarely in sandy soil. Young roots and germinating seeds are commonly fed upon by the larvae. This document describes its distribution, life cycle and biology, hosts, economic importance, and management. Also available on the Featured Creatures website at http://entomology.ifas.ufl.edu/creatures. https://edis.ifas.ufl.edu/in1233

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Bionomics of the Tabanidae (Diptera) of the Canadian Prairie

Bulletin of Entomological Research ◽

10.1017/s0007485300019039 ◽

1926 ◽

Vol 17 (1) ◽

pp. 1-42 ◽

Cited By ~ 20

Author(s):

Alfred E. Cameron

Keyword(s):

United States ◽

Life Cycle ◽

Life Histories ◽

The United States ◽

Economic Importance ◽

Canadian Prairie ◽

Blood Sucking ◽

International Boundary ◽

Single Larva ◽

First Time

Notwithstanding the undoubted economic importance of the Tabanidae, which is second only to that of the Culicidae among blood-sucking insects, our information concerning the habits and life-histories of Canadian species is very meagre indeed. What knowledge we possess has been chiefly derived from the studies made by entomologists of the United States, who have discussed among others some of the species that occur on both sides of the international boundary. Of the species dealt with in the present paper, Hart (1896, p. 227) observed oviposition by Chrysops moerens, Walk., in Illinois, and a description of the egg was given. This brief account was supplemented by Hine (1906, p. 36) in Ohio, who published a detailed description of the process of oviposition of the same species and was, moreover, successful in rearing Tabanus lasiophthalmus, Macq., from the egg to the adult—the first time that this had been accomplished for a Tabanid species. Jones & Bradley (1923, p. 310), working in Louisiana, discovered in the course of their investigations on the Tabanidae a single larva of T. reinwardtii, Wied., from which an adult was reared, but no description of the larva was offered. Webb & Wells (1924) published an account of the partial life-cycle of T. phaenops, O.S., including descriptions of the early stages, as well as of T. insuetus, O.S., in which all stages other than the egg were obtained and described.

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Entomopathogenic Nematodes of Thrips Thripinema spp. (Nematoda: Tylenchida: Allantonematidae)

EDIS ◽

10.32473/edis-in1175-2017 ◽

2017 ◽

Vol 2017 (5) ◽

pp. 4

Author(s):

Danielle M. Sprague ◽

Joseph E. Funderburk

Keyword(s):

Life Cycle ◽

Entomopathogenic Nematodes ◽

Economic Importance

Originally published on the Featured Creatures Website at http://entnemdept.ufl.edu/creatures/nematode/Thripinema_spp.htm Includes: Introduction - Distribution - Life Cycle and Biology - Symptoms - Hosts and Identification - Economic Importance - Management - Selected References

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Specters of Belonging

10.1093/oso/9780190879365.001.0001 ◽

2018 ◽

Cited By ~ 1

Author(s):

Adrián Félix

Keyword(s):

United States ◽

Life Cycle ◽

The United States ◽

Political Life ◽

The Political ◽

Mexican Migrants ◽

Mexican State ◽

Mexico Border ◽

Mexican Migrant ◽

Transnational Citizenship

In the context of research on the “thickening” of borders, Specters of Belonging raises the related question: How does transnational citizenship thicken across the political life cycle of Mexican migrants? In addressing this question, this book resembles what any good migration corrido (ballad) does—narrate the thickening of transnational citizenship from beginning, middle, to end. Specifically, Specters of Belonging traces Mexican migrant transnationalism across the migrant political life cycle, beginning with the “political baptism” (i.e., naturalization in the United States) and ending with repatriation to México after death. In doing so, the book illustrates how Mexican migrants enunciate, enact, and embody transnational citizenship in constant dialectical contestation with the state and institutions of citizenship on both sides of the U.S.-México border. Drawing on political ethnographies of citizenship classrooms, the first chapter examines how Mexican migrants enunciate transnational citizenship as they navigate the naturalization process in the United States and grapple with the contradictions of U.S. citizenship and its script of singular political loyalty. The middle chapter deploys transnational ethnography to analyze how Mexican migrants enact transnational citizenship within the clientelistic orbit of the Mexican state, focusing on a group of returned migrant politicians and transnational activists. Last, the final chapter turns to how Mexican migrants embody transnational citizenship by tracing the cross-border practice of repatriating the bodies of deceased Mexican migrants from the United States to their communities of origin in rural México.

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