On the biology of the immature stages of the almond wasp, Eurytoma amygdali End. (Hym. Eurytomidae) in Israel

1972 ◽  
Vol 61 (4) ◽  
pp. 681-687 ◽  
Author(s):  
H. N. Plaut

The distribution of the almond wasp, Eurytoma amygdali End., as a major pest of almonds in areas of the eastern Mediterranean, a general outline of its seasonal history, and studies on the biology of the adult in Israel, have been reported previously (Plaut, 1971a). This paper presents data obtained in 1964–71 on the biology of the immature stages.

Parasitology ◽  
1961 ◽  
Vol 51 (3-4) ◽  
pp. 269-294 ◽  
Author(s):  
Dorothy J. Jackson

The immature stages of Caraphractus cinctus Walker are described.Four larval stages have been observed which may correspond to three or four instars. In no stage have mandibles been observed.The first-instar larva is elongated and active. In the second-instar oral lobes are present. In the next stage the larva becomes shapeless and rather transparent. In the last stage the wall of the mid-gut shows conspicuous opaque spots which consist of single cells containing spherical concretions, probably the products of excretion.These concretions later become free in the gut of the pupa and are discharged in the meconium when the imago emerges from the host egg.The effects of parasitism on the host eggs of different ages is discussed. In newly laid host eggs all the contents are consumed by the parasitic larvae. In advanced eggs of Agabus the egg of Caraphractus is laid in the mid-gut of the host embryo where the parasitic larva develops, the hard parts of the host larva remaining intact. Parasitism in advanced eggs of Dytiscus is rarely successful.The larvae of other Mymaridae are discussed and their main features compared. The first-instar larva of Caraphractus does not correspond to any of the previously described types of mymarid larvae.The seasonal history is described, with the sequence of hosts parasitized throughout the year. From four to six generations of Caraphractus have been bred indoors during the year. The winter is passed as a diapausing prepupa. In some cases diapause may be prolonged. Fertility is high: 121 imagines have been bred from one female of Caraphractus.I have much pleasure in acknowledging my gratitude to the late Dr W. D. Hincks for his kindness in reading the typescript of this paper: the comments by such a well-known authority on Mymaridae have been most valuable. I am very grateful to Mr O. Bakkendorf for allowing me to reproduce several of his figures of Mymarid larvae from the valuable work he devoted to the biology of Danish hymenopterous egg-parasites. I am also grateful to Miss B. A. Trott of the Commonwealth Institute of Entomology for the help she has so kindly given me with references.


2019 ◽  
Vol 58 (2) ◽  
pp. 125
Author(s):  
Amanda K. Sprochi

Artifacts from Ancient Egypt, a new title in the Greenwood Daily Life through Artifacts series, utilizes objects of daily life from ancient Egypt to illuminate the ways in which material culture reflects the lifeways of the people who produce it. In keeping with the general outline of the series, author Barbara Mendoza, a Berkeley-trained specialist in ancient Egyptian and eastern Mediterranean art and archaeology, has selected 45 pieces that reflect the customs, beliefs, and practices of ancient Egyptians from the earliest Predynastic era (ca. 5000 BCE) through the late Graeco-Roman period (ca. 300 CE). The material culture of ancient Egypt is particularly adapted to this kind of treatment, given its deeply ornamented and symbolic nature, and is an excellent beginner’s guide to understanding and interpreting how material culture reflects the society that created it.


1976 ◽  
Vol 108 (8) ◽  
pp. 885-892 ◽  
Author(s):  
W. T. A. Neilson

AbstractThe apple maggot, Rhagoletis pomonella (Walsh), is a major pest of apples in Nova Scotia, and has in recent years become a serious threat to integrated insect control. This paper is an account of its past history, economic importance, seasonal history, natural enemies, the present cultural and chemical control practices, and the prospect of using alternative control measures.


2008 ◽  
Vol 18 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Margaret Leahy

Abstract Educating students and informing clinicians regarding developments in therapy approaches and in evidence-based practice are important elements of the responsibility of specialist academic posts in universities. In this article, the development of narrative therapy and its theoretical background are outlined (preceded by a general outline of how the topic of fluency disorders is introduced to students at an Irish university). An example of implementing narrative therapy with a 12-year-old boy is presented. The brief case description demonstrates how narrative therapy facilitated this 12-year-old make sense of his dysfluency and his phonological disorder, leading to his improved understanding and management of the problems, fostering a sense of control that led ultimately to their resolution.


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