Author: Jürgen Büning Publisher: Springer Science & Business Media ISBN: 9401107416 Category : Science Languages : en Pages : 405
Book Description
This book will give an overview of insect ovaries, showing the diversities and the common traits in egg growth processes. The idea to write this book developed while looking at the flood of information which appeared in the early 1980s on early pattern formation in Drosophila embryos. At this time a significant breakthrough was made in studies of this little fly, combining molecular biological methods with classical and molecular genetics. The answers to questions about early pattern formation raised new questions about the architecture of ovaries and the growth of eggs within these ovaries. However, by concentrating only on Drosophila it is not possible to form an adequate picture of what is going on in insect ovaries, since the enormous diversity found among insects is not considered sufficiently. Almost forgotten, but the first to study the architecture of ovaries, was Alexander Brandt writing in 1878 in aber das Ei und seine Bildungsstaette (On the egg and its organ of development). More than 100 years later, a series of ten books or more would be required to survey all the serious informa tion we have today on insect oogenesis. Thus, this book is a personal selection and personal view on the theme, and the authors must be excused by all those scientists whose papers could not be included. The book briefly describes the ectodemes, i. e.
Author: Nashwa Ahmed Ali Mohammed Elshaer Publisher: ISBN: Category : Languages : en Pages : 178
Book Description
The present work aims at establishing the first bases for studying the insect oocyte polarity in a phylogenetically basal species, the cockroach Blattella germanica. Our approach was to choose some genes that have been described as key in the establishment of oocyte polarity in Drosophila melanogaster. Among them we studied, Capicua, a HMG box transcription factor repressor in B. germanica, which is required for the establishment of dorsal-ventral patterning of eggshell and embryo. The epidermal growth factor receptor (EGFR) that is also essential for the polarity establishment in the oocyte. We study the function of Notch pathway and how the components of this pathway participate in the proper development of the oocyte. Otherwise, trying to study the relationships between Capicua and EGFR, we assess the function of Pipe in B. germanica ovary, and embryo.
Author: David L. Denlinger Publisher: Cambridge University Press ISBN: 1108755186 Category : Science Languages : en Pages : 465
Book Description
Our highly seasonal world restricts insect activity to brief portions of the year. This feature necessitates a sophisticated interpretation of seasonal changes and enactment of mechanisms for bringing development to a halt and then reinitiating it when the inimical season is past. The dormant state of diapause serves to bridge the unfavourable seasons, and its timing provides a powerful mechanism for synchronizing insect development. This book explores how seasonal signals are monitored and used by insects to enact specific molecular pathways that generate the diapause phenotype. The broad perspective offered here scales from the ecological to the molecular and thus provides a comprehensive view of this exciting and vibrant research field, offering insights on topics ranging from pest management, evolution, speciation, climate change and disease transmission, to human health, as well as analogies with other forms of invertebrate dormancy and mammalian hibernation.
Author: M. S. Kaulenas Publisher: ISBN: Category : Nature Languages : en Pages : 240
Book Description
The book provides a comprehensive review on insect accessory reproductive structures. The topics covered include the development and genetic control of differentiation of the reproductive efferent duct systems and associated structures. With regard to the female systems, special emphasis has been placed on the functions of the follicle cells and their role in yolk protein synthesis, the formation of the vitelline membrane and the chorion, nurse cells and trophocytes in the ovary, the role of duct-associated structures and of the fat body in yolk protein synthesis. The male accessory glands have also been reviewed in detail.
Author: Mike Lehane Publisher: Springer Science & Business Media ISBN: 9401179530 Category : Science Languages : en Pages : 301
Book Description
Blood-sucking insects are the vectors of many of the most debilitating parasites of man and his domesticated animals. In addition they are of considerable direct cost to the agricultural industry through losses in milk and meat yields, and through damage to hides and wool, etc. So, not surprisingly, many books of medical and veterinary entomology have been written. Most of these texts are organized taxonomically giving the details of the life-cycles, bionomics, relationship to disease and economic importance of each of the insect groups in turn. I have taken a different approach. This book is topic led and aims to discuss the biological themes which are common in the lives of blood-sucking insects. To do this I have concentrated on those aspects of the biology of these fascinating insects which have been clearly modified in some way to suit the blood-sucking habit. For example, I have discussed feeding and digestion in some detail because feeding on blood presents insects with special problems, but I have not discussed respiration because it is not affected in any particular way by haematophagy. Naturally there is a subjective element in the choice of topics for discussion and the weight given to each. I hope that I have not let my enthusiasm for particular subjects get the better of me on too many occasions and that the subject material achieves an overall balance.
Author: Milislav Demerec Publisher: CSHL Press ISBN: 9780879694418 Category : Science Languages : en Pages : 650
Book Description
Biology of Drosophila was first published by John Wiley and Sons in 1950. Until its appearance, no central, synthesized source of biological data on Drosophila melanogaster was available, despite the fly's importance to science for three decades. Ten years in the making, it was an immediate success and remained in print for two decades. However, original copies are now very hard to find. This facsimile edition makes available to the fly community once again its most enduring work of reference.
Author: Jürgen Büning
Author: J. Buning
Author: Nashwa Ahmed Ali Mohammed Elshaer
Author: David L. Denlinger
Author: Reginald Frederick Chapman
Author: 
Author: Bruce Alberts
Author: M. S. Kaulenas
Author: Mike Lehane
Author: Milislav Demerec