GENERA

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The Genera Of Lactic Acid Bacteria

Author : Brian J.B. Wood
ISBN : 075140215X
Genre : Science
File Size : 73.96 MB
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The Lactic Acid Bacteria is planned as a series in a number of volumes, and the interest shown in it appears to justify a cautious optimism that a series comprising at least five volumes will appear in the fullness of time. This being so, I feel that it is desirable to introduce the series by providing a little of the history of the events which culminated in the decision to produce such a series. I also wish to indicate the boundaries of the group 'The Lactic Acid Bacteria' as I have defined them for the present purposes, and to outline my hopes for future topics in the series. Historical background lowe my interest in the lactic acid bacteria (LAB) to the late Dr Cyril Rainbow, who introduced me to their fascinating world when he offered me a place with him to work for a PhD on the carbohydrate metabolism of some lactic rods isolated from English beer breweries by himself and others, notably Dr Dora Kulka. He was particularly interested in their preference for maltose over glucose as a source of carbohydrate for growth, expressed in most cases as a more rapid growth on the disaccharide; but one isolate would grow only on maltose. Eventually we showed that maltose was being utilised by 'direct fermentation' as the older texts called it, specifically by the phosphorolysis which had first been demonstrated for maltose by Doudoroff and his associates in their work on maltose metabolism by a strain of Neisseria meningitidis.
Category: Science

Annotated Keys To The Genera Of Nearctic Chalcidoidea Hymenoptera

Author : National Research Council Canada
ISBN : 0660166690
Genre : Chalcid wasps
File Size : 21.17 MB
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This publication presents illustrated keys to the 19 families and 706 described genera of Chalcidoidea known to occur in the Nearctic region (minimally America north of Mexico, but also including those areas of Mexico generally considered as having a Nearctic insect fauna). The first three chapters provide an introduction to this superfamily of wasps, most of whose members are parasites of other insects; a review of chalcidoid morphology as related to terms used in the keys & diagnoses; and an overview of the superfamily, including a 41 couplet key to families. Each of the remaining 19 chapters reviews one family & includes sections on recognition, systematics & relationships, biology, literature, an annotated key to the Nearctic genera, and for larger families an index to genera based on couplet number. Over 1,800 line drawings & electron micrographs illustrate the keys. Annotations include references to existing keys to species, estimated number of species, and known distribution & host range in the region.
Category: Chalcid wasps

Genera Orchidacearum

Author : Alec M. Pridgeon
ISBN : 0198505132
Genre : Nature
File Size : 28.1 MB
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Category: Nature

Genera Orchidacearum Volume 3

Author : Alec Pridgeon
ISBN : 0198507119
Genre : Nature
File Size : 31.95 MB
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Genera Orchidacearum is the first monograph of the world's orchid genera that reflects their long evolutionary history and reveals relationships based on genealogical descent and the most up-to-date DNA data.
Category: Nature

Review Of The Genera Of New World Mymaridae Hymenoptera

Author : Yoshimoto
ISBN : 1877743046
Genre : Science
File Size : 40.49 MB
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The New World Mymaridae include 59 genera and subgenera of which 9 are described as new. In addition, 19 species are described. Seven species-groups of Gonatocerus Nees are recognized and four species-groups of Acmopolynema are also proposed. Keys to females and males of the New World genera are provided and keys to subgenera are included under the respective genera. For each genus a diagnosis, synonymy, distribution, and list of known species for the New World are given. Nine described genera and six nominal genera are recorded from the New World for the first time. The book is illustrated with 191 photos and drawings.
Category: Science

Oecophorine Genera Of Australia Iii

Author : Ian FB Common
ISBN : 9780643105850
Genre : Science
File Size : 53.64 MB
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This volume completes the revision of the oecophorine genera of Australia, a subfamily which has diversified enormously in this country and represents some 20% of the Australian lepidoptera. The generic revision of the Australian Oecophorinae, continued in this third volume, includes the large Barea group of genera, the small Tisobarica group, some genera previously omitted in the first two volumes from the Wingia and Chezala groups, and some miscellaneous genera of unknown relationship. This volume deals with 96 genera, 73 of which are referred to the Barea group, two to the Tisobarica group, four to the Wingia and Chezala groups, and 17 to the group of unplaced genera. As in the first two volumes, nearly all of the genera are endemic. An account of the morphology of each genus is provided, including the genitalia of both sexes, illustrated by 772 photographs of mounted and live adults and genitalia of type species or representative species, SEMs of the heads of most of the type species, as well as line drawings of the wing venation. The species referred to each genus are given, with full synonymy, original references, label data and repositories of the primary types; where necessary, lectotypes are designated. Available up-to-date information on the distribution, biology and host relationships of the larvae is provided, as well as a key to the genera of the Barea group.
Category: Science