Notes on Life-histories of Four Species of Climbing Cutworms Collected from Low-bush Blueberry Fields in New Brunswick (Lepidoptera: Phalaenidae)

1957 ◽  
Vol 89 (11) ◽  
pp. 502-506 ◽  
Author(s):  
G. W. Wood ◽  
W. T. A. Neilson

As part of a comprehensive investigation on insects affecting the low-bush blueberry carried on in New Brunswick during the past eight years, the writers accumulated considerable information on several species of climbing cutworms that previously received little attention. Life-history notes on four species are presented in this paper: Graphiphora smithi (Snell.), Graphiphora collaris (G. & R.), Eucirrhoedia pampina (Gn.), and Heptagrotis phyllophora (Grt.). Each species by itself is not considered as a serious pest of blueberry, but these and other species may cause an appreciable reduction in the blueberry crop.

Inner Asia ◽  
2010 ◽  
Vol 12 (1) ◽  
pp. 5-23 ◽  
Author(s):  
Yuki Konagaya

AbstractIn this article I introduce our collection of oral histories composed of life histories recorded between 2001 and 2006. First, I discuss some devices implemented in the process of collecting life histories, which was to make oral histories 'polyphonic'. I then suggest that oral history always has a 'dual' tense, in that people talk about 'the past' from the view point of 'the present'. This is illustrated by six cases of statesmen narrating their views about socialist modernisation. Finally, using one of the cases, I demonstrate the co-existence of non-official or private opinions along with official opinions about the socialist period in life-history narratives in the post-socialist period. I call this 'ex-post value'.


2004 ◽  
Vol 14 (1) ◽  
pp. 45-68 ◽  
Author(s):  
Margaretha Järvinen

The purpose of the article is to suggest a development of the narrative life history tradition along the lines represented by George Herbert Mead and Paul Ricoeur. This theoretical approach is presented as an alternative to both subjectivist approaches, that continue the search for the solitary, true self behind the life histories, and to structuralist approaches, in which the self and its past experience disappears. In the article a theoretical framework is sketched that a) focuses on “the perspective of the present” but does not lose sight of the past, and b) emphasizes the interactionist dimensions of life histories but also pays attention to the self and its ongoing projects. The reasonings of Mead and Ricoeur are applied to a series of empirical examples, drawn from different areas of life history research. (Time, Narrative, Emplotment, Life Histories, Self, Mead, Ricoeur)


1954 ◽  
Vol 86 (4) ◽  
pp. 169-173
Author(s):  
G. W. Wood ◽  
W. T. A. Neilson ◽  
C. W. Maxwell ◽  
J. A. McKiel

Wood (1951) published a list of lepidopterous larvae collected from commercial blueberry fields in Charlotte County. N.B. Among the species consistently collected annually from 1947 to 1952 are the cutworms Spaelotis clandestina (Harr.) and Polia purpurissata (Grt.). Although notes on both species have been given by various authors, including Crumb (1929, 1932), Gibson (1915), and Phipps (19301, no complete account of their life-histories has been published.


2005 ◽  
Vol 62 (4) ◽  
pp. 725-729 ◽  
Author(s):  
Brian J Shuter ◽  
Peter A Abrams

Throughout his career, Ray Beverton displayed an interest in the life history diversity in marine and freshwater fish. The papers collected here describe recent research directed at documenting this diversity and understanding both its consequences and the processes that generate it. There are three themes: factors that direct life history dynamics; fishing as a force that redirects life history dynamics; and roles for life history statics in conservation management. The "dynamics" papers show that fish life histories can evolve in response to both natural and harvest-induced selective pressures. Evolution in response to harvesting can be rapid, with potentially dramatic effects on population dynamics and sustainable exploitation. The "statics" articles demonstrate how maturity traits combine with shifts in habitat use to shape the sensitivity of a population to habitat loss. Life history shifts can dramatically alter the safety of harvesting policies that were prudent in the past; shifts of the predators or prey of a harvested species can be as important as shifts in the harvested species itself. Further work on the ecological circumstances that favour different degrees of plastic or genetic life history responses to human impacts are needed to prevent inadvertent induction of long-lasing evolutionary changes in fish life histories.


1969 ◽  
Vol 1 (2) ◽  
pp. 47-91
Author(s):  
Eugene Smyth

The larvas of all injurious Scarabaeid beetles are known popularly as white-grubs, and those occurring in Porto Rico are injurious either as grub, or as adult to the sugar-cane plant, particularly in the drier sections of the Island. An economical way of controlling these grubs is much desired, and it has been with the object of finding some ultimate method of control that the intensive studies of the life-histories of the species have been made.Up to the present date ten distinct species of white-grubs have been segregated and studied. Of these, four belong to the genus Phyllophaga (better known as Lacknosierna) and one to the genus Phytalus in the tribe Melolonthini, while the other five belong tothree genera in the tribe Dynastini, which includes the large rhinoceros beetles. The present paper deals only with grubs of the first tribe, known as May-beetles, and is an accumulation of data compiled from observations and life-history studies made by the author during the past four years. The work was conducted at the South Coast Laboratory, located near Guánica Centrale, which is in the heart of the district suffering most from the attack of white-grubs.


Author(s):  
Maren N. Vitousek ◽  
Laura A. Schoenle

Hormones mediate the expression of life history traits—phenotypic traits that contribute to lifetime fitness (i.e., reproductive timing, growth rate, number and size of offspring). The endocrine system shapes phenotype by organizing tissues during developmental periods and by activating changes in behavior, physiology, and morphology in response to varying physical and social environments. Because hormones can simultaneously regulate many traits (hormonal pleiotropy), they are important mediators of life history trade-offs among growth, reproduction, and survival. This chapter reviews the role of hormones in shaping life histories with an emphasis on developmental plasticity and reversible flexibility in endocrine and life history traits. It also discusses the advantages of studying hormone–behavior interactions from an evolutionary perspective. Recent research in evolutionary endocrinology has provided insight into the heritability of endocrine traits, how selection on hormone systems may influence the evolution of life histories, and the role of hormonal pleiotropy in driving or constraining evolution.


2021 ◽  
pp. 025576142199115
Author(s):  
Tim Palmer ◽  
David Baker

This article explores the life histories of virtuoso classical music soloists with particular reference to conservatoire provision. Detailed life-history interviews were conducted with six virtuosi between May 2018 and January 2019. These participants were three singers, two cellists and a concert pianist. Resultant qualitative data were stored in an NVivo software database and understood through a process of analytic induction. Key findings spotlight the significance of Higher Education, a connection between broad creative and cultural interest and musical excellence, and a significant role for conservatoires in diversifying their training and easing transition into the career. The soloists also warned of dangers relating to controlling teachers, loss of autonomy and a need to convey their career realities to students.


2012 ◽  
Vol 22 (1) ◽  
pp. 79-115 ◽  
Author(s):  
Martin Scanlan

This study creates life history portraits of two White middle-class native-English-speaking principals demonstrating commitments to social justice in their work in public elementary schools serving disproportionately high populations of students who are marginalized by poverty, race, and linguistic heritage. Through self-reported life histories of these principals, I create portraits that illustrate how these practitioners draw motivation, commitment, and sustenance in varied, complicated, and at times contradictory ways.


Parasitology ◽  
1959 ◽  
Vol 49 (3-4) ◽  
pp. 374-386 ◽  
Author(s):  
R. J. Thomas

1. The life history of N. battus is described, and a comparative description of the life history of N. filicollis is given.2. The life histories of these two species are compared with those of N. spathiger and N. helvetianus, two closely related species, and are shown to follow the same basic pattern, with minor variations in timing which appear to be specific in nature, and not related to differences in culture methods or host species.3. The pathogenesis of Nematodirus species is discussed and related to the migration of larvae into the intestinal mucosa during development.


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