Found inside – Page 336This difference between Y - S and S - Y females clearly indicates that ... due to the previously mentioned differences between males and females in both the ... Found inside – Page 102Repeated matings offset costs Because the inherent conflict between male and female of reproduction in female crickets . ... Ejaculate substances that affect female insect reintrinsic sexual conflicts may go overlooked when antag productive ... About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Found insideThe difference between the male and female of the common Emperor Moth is strikingly obvious ; the male is smaller than the female , and the colours in ... Found inside – Page 292closely resemble, chiefly by the structure of the mouthparts, and the wing venation. Larval caddis flies differ from immature ... the male are of characteristic shape (Fig. 1 1.2). The genitalia of the male and female are illustrated in :92 J.P. Leader. This book is an essential reading for biologists and chemists. Found inside – Page 195... the difference between males and females in the responses that control diapause induction is reflected in male-biased sex ratios in overwintering ... Found inside – Page 446Unfortunately I have only a female. According to Hampson the difference between this genus and Pococera and other allied genera is as follows:– 1a. Antennae of male without a process; fore-wing without furrow; veins 4, 5 stalked - - . The concluding chapters deal with the collection, isolation, identification, synthesis, and analysis of sex pheromones. This book will greatly appeal to research and economic entomologists, insect physiologists, chemists, and ecologists. Found inside – Page 25Much of the apparent difference between chemical signals and acoustical and ... that evolve towards commonality of interests between males and females. Found inside – Page 74the effect of age on susceptibility of the onion fly to either dieldrin or etiion , greater kills were obtained with the older ... The majority of reports in the review of literature on the effect of sex on the toxicity of insecticides to insects indicated that the female insects were more resistant than the male . ... It is important to note that the difference in weight between the female and cuale insects was not significant . Found inside – Page 2265.14 Distribution of cell bodies of neurons that show myomodulin - like immunoreactivity . There are differences between males and females in their distribution in abdominal ganglion A7 and in the last abdominal ganglion . Based on Swales ... Found inside – Page 119main cause of insect resistance . If dense pubescence is a main factor ... Differences in pupal weight and duration of the sixth instar were also detected between male and female larvae reared on Fukuyutaka . In male larvae , the pupal weight ... - Birds and Insects compared About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Found inside – Page 271For instance, it is important to know the difference between male and female emergence patterns. As in most Lepidoptera it is the male which is attracted to ... Found inside – Page 347 % of the plants were female , many with developing fruits . A total of 32 plants bore insects that day ; 13 were male plants and 19 19 female . There was no difference between the pattern of insect visits to plants of each sex and that expected ... Found inside – Page 162I at first thought that the species must be new, as the female insect does not entirely agree with any described species that I ... difference between the male insect and scale of the A. zonatus, Frauenf, and those found by Mr. Douglas and myself. In this dissertation I investigate how sexual selection has driven the evolution of a sexually dimorphic character in an orthopteran insect, the Wellington tree weta, Hemideina crassidens (Ensifera: Anostostomatidae). To evaluate the use of sterile male insects for suppression of a pest population, one must know the magnitude of the release ratio and the level of male sterility required to eradicate the target population. "This book is published on the occasion of the Royal Entomological Society's International Symposium on "The Evolution of Insect Mating Systems" in St Andrews, September 4-6 2013. All symposium speakers contributed to this volume. Found inside – Page 229They predicted that male A. asychis, in which both sexes usually emerge in ... the first male to spot a female can mean the difference between reproductive ... Looking at some of the most amazing creatures on the planet, Odd Couples sheds astonishing light on what it means to be male or female in the animal kingdom. Found inside – Page 460The palpi consist of Corethrella brakeleyi , male and female five segments in both antennae , much enlarged ( Original ) sexes of most Culicidae , except in the females of certain ... The Culicinae present striking differences between the sexes . Found inside – Page 251Spiders, sexual colours of; stridulation by the males. Myriapoda CHAPTER X Secondary sexual characters of insects, 403 Diversified structures possessed by the males for seizing the females. Differences between the sexes, of which the ... In this collection of essays from the blog Not Exactly Rocket Science, award-winning writer Ed Yong takes a look at some of the quirkiest, most interesting and most ground-breaking scientific research from the last year. Found inside – Page 501 Reproduction spermatogenesis and the early stages of oogenesis proceed independently of the adult endocrine system , the later ... down paired oviducts or vasa deferentia to meet with Lampyris , the morphological differences between the secretions from accessory ... 5 ) . female . In some insects secretions of the male , transferred In mosquitoes , however , ecdysone from the ovaries to the female at ... Found inside – Page 149In addition to this basic difference between male and female germ cells, there are also species-related differences in the overall sensitivity of male and ... Found inside – Page 19Recognition of anopheline mosquitos Learning objectives By the end of this Unit you should be able to : • distinguish mosquitos from other insects on the basis of their external characteristics • distinguish between male and female mosquitos ... Insect Development and Evolution is the first synthesis of knowledge of insect development within an evolutionary framework and the first to survey the genetic, molecular, and whole organism literature. Found inside – Page 84Size and strength 4. would be an advantage to the males which fight for 5. the possession of the females, and in these ... According to the author, 1) male insects are always females 2) in a given species nature provides differences between ... Found inside – Page 65It has also been discovered mental information is being obtained rela - by entomologists ( 7 ) that some insects tive to the ... male and female codling moth pupae primarily to modulations of the sound , based upon slight differences in size . Found inside – Page 109These showed the temperatures to which the whole body surface of the insects was exposed . ... The male and female insects showed a hygronegative response and also reacted to a humidity difference of 20 % both at the lower ( 10 - 30 % R ... In this book, H. Frederik Nijhout's goal is to provide a complete, concise, and up-to-date source for students and nonspecialists seeking an overview of the dynamic and wide-ranging science that insect endocrinology has become since its ... Originally published in 1914, this book contains a study of the causes that lead to the appearance of males and females in a number of species, including humans. Found inside – Page 81Whether aphid or elephant , ensuring paternity is an issue that exercises males , and females still seek the best fathers for their offspring . However , there is an important difference between insects and the higher vertebrates , as females on ... Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Found inside – Page 300RELATION TO HosT SPECIFICITY Only six female insects on A. farnesiana BIOLOGICAL AND ECOLOGICAL STUDIES and three on ber ... INSECTS breeding cages set up for the parasites , Baisakhi 1962-63 : Females of the im 11 males and 15 females could be obtained pregnated ... The difference between the adults . Found inside – Page 350The results thus obtained indicate the basic difference between two D. virilis ... sensillae is identified by comparing the male and female insects . ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Found inside – Page 69No differences were found in the age ( i.e. size ) of fish taken between males and females . ... food types per stomach ( 1.6 ) than both males and non - pregnant females and a greater number of their stomachs contained insects ( 100 % ) . Found inside – Page 942Sexual dimorphosis morphological differences between males and females of a species, for example, size difference, presence of horns on the male, ... Found inside – Page 10Among some gall wasps the differences between two succeeding generations is great enough to have caused them , at one ... The next generation , therefore , is composed of both female and male insects which produce eggs ( female ) and ... To facilitate this sum mary presentation, I have limited the literature review largely to material published after 1970, extending to material appearing late in 1990. Found insideThis book analyzes and extends thirty years of theoretical and empirical work on insect sperm competition. It considers both male and female interests in sperm utilization and the sexual conflict that can arise when these differ. Found inside – Page 440Sexual dimorphism—obvious differences between males and females of the same species. Sociality—tendency to associate with other individuals of the same species. Sociobiologists—scientists that study all aspects of social organizations ... Found inside – Page 45Out of the total of 840 adults sampled there were 403 males while females were 432 ( Table 1 ) . ... The t - test anaylsis of the mean winglengths of male and female in all experimental plants indicated that the differences between males and females were significant ( P < 0 . ... Discussion The random sample of adult D . dakariensis collected indicated that the sex ratio of the insect is very close to unity . Found inside – Page 295The bacterial density is correlated with compatibility differences between males and females. Strains with high numbers are incompatible with females from ... Found inside – Page 57The wings of the females are simpler and usually smaller . The differences between the front wings in the male and the female of one of the tree crickets ( Fig . 37 ) is shown at B and D of Figure 33 . The inner half of the wing ( or . the rear half ... Found inside – Page 44gratingly harsh than those of the grasshopper , though they are often tedious and monotonous to Western ears if heard for a long period ... Both male and female crickets and grasshoppers are able to ... The actual positioning of the tympana on the insects ' bodies , and the methods of stridulation , differ enough to distinguish ... 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