The Life History and Ecology of the Woolly Pine Needle Aphid, Schizolachnus pini-radiatae (Davidson) (Homoptera: Aphididae)

1962 ◽  
Vol 94 (1) ◽  
pp. 35-45 ◽  
Author(s):  
Johan H. Grobler
Keyword(s):  
Life History ◽  
Red Pine ◽  
Stanford University ◽  
Pine Needle ◽  
History Of

The woolly pine needle aphid, Schizolachnus pini-radiatae, was described in 1909 by Davidson as Lachnus pini-radiatae from specimens collected near Stanford University, California. In revising the subtribe Cinarina, Gillette and Palmer (1931) placed this species in the genus Schizolachnus. Detailed descriptions of the species were given by Davidson (1909), Gillette and Palmer (1931), and Palmer (1952), but none of the earlier workers studied the life history of this aphid. The present study was carried out during 1960 in a seven-year-oId red pine stand in kirkwood Township, about 50 miles east of Sault Ste. Marie, Ontario.

The Life History of Ips pini (Say) (Coleoptera: Scolytidae)

1961 ◽  
Vol 93 (5) ◽  
pp. 384-390 ◽  
Author(s):  
J. B. Thomas
Keyword(s):  
Life History ◽  
Bark Beetles ◽  
New York State ◽  
Ips Pini ◽  
Red Pine ◽  
Seasonal Development ◽  
Blue Staining ◽  
White Pine ◽  
Eastern Canada ◽  
History Of

The pine engraver, Ips pini (Say), is one of the most common bark beetles found in pine and spruce in eastern Canada. Clemens (1916) studied its biology in New York State, and more recently, Reid (1955) reported the seasonal development of this beetle in Alberta. Prebble (1933) discussed the larval development at Fredericton, N.B., and I have listed the associates of this species found in red and white pine logging slash in western Quebec (Thomas, 1955). Leach, Orr and Christensen (1934) and Orr (1935) discussed the association of this bark beetle wit11 blue-staining fungi in red pine logs in Minnesota. Most of the observations reported in this paper concern the life history of I. pini in jack pine at Black Sturgeon Lake in northwestern Ontario from 1952 to 1960. Supplementary observations were also made on the seasonal development of this insect in red pine in southern Ontario in 1956 and 1957, and in white pine at Laniel, Quebec, in 1951.

A COMPARISON BETWEEN CONOPHTHORUS SHOOT-INFESTING BEETLES AND CONOPHTHORUS RESINOSAE (COLEOPTERA: SCOLYTIDAE): I. COMPARATIVE LIFE HISTORY STUDIES IN MICHIGAN

1970 ◽  
Vol 102 (8) ◽  
pp. 1008-1015 ◽  
Author(s):  
J. E. McPherson ◽  
L. F. Wilson ◽  
F. W. Stehr
Keyword(s):  
Life History ◽  
Life Histories ◽  
Shoot Tips ◽  
Red Pine ◽  
Seasonal Development ◽  
Pine Cone ◽  
History Of

AbstractLife histories of Conophthorus beetles attacking the shoot tips of jack, red, Scotch, and ponderosa pines were studied and compared with the life history of the red pine cone beetle, Conophthorus resinosae Hopkins. The tip-infesting beetles have not been morphologically separated from C. resinosae. The beetles attacking the shoots of jack, red, Scotch, and ponderosa pines have similar life histories which differ from that of C. resinosae. The latter is distinctly univoltine, while the tip-infesting beetles appear to be bivoltine. Also, dates of appearance and seasonal development differ.

Experimental life history of Echinostoma cinetorchis

1990 ◽  
Vol 28 (1) ◽  
pp. 39 ◽  
Author(s):  
S H Lee ◽  
J Y Chai ◽  
S T Hong ◽  
W M Sohn
Keyword(s):  
Life History ◽  
History Of

Queering Gender Identity Work: A Life History of a Black Transgender Woman

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Esethu Monakali
Keyword(s):  
Life History ◽  
Gender Identity ◽  
Public Spaces ◽  
Identity Work ◽  
Social Identities ◽  
Gender And Sexuality ◽  
Ongoing Effort ◽  
History Of ◽  
The Individual

This article offers an analysis of the identity work of a black transgender woman through life history research. Identity work pertains to the ongoing effort of authoring oneself and positions the individual as the agent; not a passive recipient of identity scripts. The findings draw from three life history interviews. Using thematic analysis, the following themes emerge: institutionalisation of gender norms; gender and sexuality unintelligibility; transitioning and passing; and lastly, gender expression and public spaces. The discussion follows from a poststructuralist conception of identity, which frames identity as fluid and as being continually established. The study contends that identity work is a complex and fragmented process, which is shaped by other social identities. To that end, the study also acknowledges the role of collective agency in shaping gender identity.

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