Animals P by: Geoffrey LaPage Published by ... - PSSurvival.com

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I P c’ I .! The Kinds of Parasitic . +hhals parasitic in the small intestine, wher&it feeds and grows and moults its skin to become the fourtii larva. The fourth larva then grows up to become either a male or a female adult worm. #@ During this life history the p&asitic animal is, it will be observed, parasitic only during Ithe later phases of the life history. The earlier phases are not parasitic and the whole life history can be divided into a non-parasitic phase, consisting of the fertilized egg, and the first, second, and third larvae, and a parasitic phase, con+&ing of the third and fourth larval phases and the adult wbrms, which produce the fertilized eggs. The parasitic anim& moreover, passes, by means of its infective larva, dire$y from one host to another. It lives, so to speak, its life wi$iout any help from any other kid of animal except its hosts. In these it produces fertilized eggs, which pass out of the host and enter another host when the infective larva has hen formed. Species with life histories of this type are thus t& lone hands, so to speak, of the parasitic world. They find their hosts and live inside them entirely on their own; $4 that they need is a host in which they can produce fertilj.ied eggs. hdirect Life Histories c / Let us now look at the life history (fig. 4) of Fizxiola hepatica, the common liver fluke of sheep and cattle, which may, under circumstances explained in chapter 5, become parasitic in man. The adults of this species are parasitic in the bile ducts of the livers of sheep, cattle, and other vertebrate hosts. In this situation they produce fertilized eggs, which pass out with the bile into the small intestine of the hosts and ultimately reach the exterior in the droppings of the hosts. Inside each egg a first larva called a mirtidium develops and this hatches out of the egg. It is covered with small protoplasmic hairs (&‘a) and with these it swims in water on the pastures on which the hosts feed. It lives thus a brief non-parasitic life. It must, however, become parasitic inside a certain species of amphibious or aquatic snail. If it does not succeed in getting into one of 31
Animals Parasitic in Man ,‘, Eggs of the fluke passed out in the droppings of the final host Weep. cattle, rabbit, man, etc.) + of the final hosts Cercaria encysts on grass, etc. way into the Sporocyst produces rediae Cercaria ~~~~e~~sy’ to infect final host (sheep, cattle. man, etc.) Fig. 8. The indirect life history of the common liver fluke of sheep and cattle ( Fasciola heputica) se
Page 1: A project of Volunteers in Asia Ani
Page 4 and 5: Animals Parasitic ffrey LaPage This
Page 6 and 7: ANIMALS PARASITIC I IN MAN Geufrey
Page 8 and 9: Gmtmts LIST OF PLATES LIST OF TEXT
Page 10 and 11: List of Text Fipres I. Am&u pro&r~,
Page 12 and 13: . List of Text Fi@res 67. Head of t
Page 14 and 15: Editorial Foreword of biology, illu
Page 16 and 17: i 1 I ? CHAPTER ONE What is a Paras
Page 18 and 19: W&at is a Parasitic Animal? individ
Page 20 and 21: Wht id a Parasitic Animal? plants,
Page 22 and 23: WZ.at is a Parasitic Animal? compro
Page 24 and 25: Wht is a Parasitic Animal? excremen
Page 26 and 27: _- ),.,> > /’ /’ I‘ / ,,*’
Page 28 and 29: The Kinds of Parasitic Animals of P
Page 30 and 31: I The icinds of Parasitic Animals a
Page 32 and 33: ^’ _ .-- ___-_ -- __. _.-- -- _--
Page 36 and 37: Inside the snail it develops into a
Page 38 and 39: The Kinds of Pmai ever, introduce a
Page 40 and 41: The Kinds of Parasitic Animals more
Page 42 and 43: CHAPTER THREE The Lone Hatlds I N t
Page 44 and 45: The Lone Hands are thus smaller tha
Page 46 and 47: The Lone Hands by entering this hos
Page 48 and 49: Th Low Hands eggs of this species,
Page 50 and 51: . E. histolytica E . coli pathogeni
Page 52 and 53: The Lone Hunch inch. Within the var
Page 54 and 55: The Lone Hands is swa&6wed by anoth
Page 56 and 57: The Lone Hands Balantidium cola’
Page 58 and 59: The Lme . an& 4 weeks in the world
Page 60 and 61: CHAPTER FOUR Tbt Lme Han& (CONTINUE
Page 62 and 63: Th Lone Hands containing lnf&tlve s
Page 64 and 65: , Tk Lone Hands they are applied. T
Page 66 and 67: Animals Parasitic in Man year by th
Page 68 and 69: Animals Parasitic in Man convey the
Page 70 and 71: Animals Parasitic in Man intestine
Page 72 and 73: Animals Parasitic in Man which are
Page 74 and 75: Anidi Parasitic in Man is experimen
Page 76 and 77: CHAPTER FIVE Animats Twice Parasiti
Page 78 and 79: Animals Parasitic in Man The adult
Page 80 and 81: Anid Parasitic in Man The We histor
Page 82 and 83: Animals Parasitic in Man inch) long
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Animals Parasitic in Man life histo
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Animals Parasitic in Man beings inf
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Animals Parasitic in Man adult male
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Animals Parasitic in Man veins near
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,.A --- Animals Parasitic in Man ca
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Ani,& Parasitic in Man heart and th
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1 Animali Parasitik in Man testinal
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Awkals Para.sitic in Man The develo
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A&t& Parasitic in Man bution is thu
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. Animals Pamdie in Man chronic inf
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Animals Parasitic in Man The infect
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Anitils Parasitic in Man been given
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Animals Parasitic in Man in the hea
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CHAPTER SIX Animals Twice Parasitic
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I* Animals Parasitic in Man adult m
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Animats Parasitic in Man has a tail
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Animals Parasitk in Mm whole chain
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Animal Parasitic in Man (recephuutu
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Animals Parasitic in Man relatives
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Animals Parasitit in Man f’&lized
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Animals Pars&tic in Mm the only int
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I’ !I> ~.a . ! Animals Parasitic
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Anid Para*tk in Man ing f&m abdomin
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;’ :., \ - c i AzkaLs Parasitic i
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Animls Parasitic in Mm ments and a
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Animals Parasitic in Man come the l
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Animals Pmasific in Man The chief e
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Animals Pam&c in Man The chief&&s o
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Animals Parasitic in Mm are lang. I
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length of a cricket pitch. Its body
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terminal segments only, which are c
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Animals Parasitic in Man fish. If t
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Animals Parasitic in Man the Qpisth
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Animals Pimsitic in Mm CIonurchis s
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Animals Parasitic in Man there may
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Animals Parasit& in Man This fluke
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I” : Animds Pam&k in Man man eats
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. I Animals Parasitic in Man opercu
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CHAPTER EIGHT \ The Mularid Parasit
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asexual mriit!plltatibn In the live
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(a) Enter&us we?wzicuiuris, the hum
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wl (a) The human head louse, Pedicu
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The Multzrial Parasites may be inje
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Animals Parasitic in Man when it is
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Animals Paradic in Man by boats ply
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Animals Parasitic in Man ous areas,
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Anintats Pwasitik in Man day, so th
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- Animals Parasitic in Man glands c
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Animals Parasitic in Man parasitic
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Animals Parasitic in Man area, as f
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Animali Parasitic in Man humidity a
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Animals Parasitic in Man THE CONTRO
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Animals Parasitic in Man when, in 1
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CHAPTER NINE The Human Trypanosomes
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Anhals Parasitic in Man tory, some
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Animals Parasitic in Man of the gen
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Animals Pamsitk in Man canal. From
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Aninds Parasitic in Man say, exactl
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Animals Parasitic in Man The diseas
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Animals Parasitic in Man hours and
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Aniin.& Para.Ctic in Man been eff
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Animals Pamsitic in Man miasis in f
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Animals Parasitic in Man trypanosom
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Animals Parasitic in Man Z%e Genus
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Animali Parasitic in Man species of
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Animals Purusitic in Man micra long
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Animals Parasitic in Man called the
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Anintals Parasitic in Man round the
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Animals Parmitic in Man into the br
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Animals Parasitic in Man The mouthp
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Anhnals Pmasitk in Man blood of the
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An&& Parasitic in Man a way through
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Anid Parasitic in Man means of a ma
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Animals Parasitic in Man species th
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anging from 7 days to a year, accor
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Animali Parasitic in Man Ctenoc~Mid
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Animals Parasitic ir~ Man tion of t
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Animak Parasitic in Man tissue-flui
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Animals Parasitic in Man generation
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Animali Parasitic in Man Europe (bu
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Animals Parasitk I& Man pupate ther
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Anid Pam&k in Man may develop in th
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Animals Parasitic in Maa Ticks Tick
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Animals Pmzsitic in Man other hand,
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Animals Parasitic & Man terranean a
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Animals Parasitic in Man one variet
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Animals Parasitic in Man Mellanby (
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Animals Paradk in Man LimguatuIids
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CHAPTER ELEVEN Gain and Loss for th
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Atlimls Pmzsitic in Man performed b
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Animals Pamsitic in Man reduction o
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Animds Parasitic in Man chapter 9 a
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Animals Parasitic in Man a total of
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and other species of parasitic inse
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Animals Parasitic in Man whether th
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Aninzals Parasitic irz Man repeated
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are, like the roundworms, unisexual
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Animali Parasitic in Mm classified
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Animals Parasitic in Man mansoni, m
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Animals Parasitic in Man when peopl
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Animals Parasitic in Maz of man. It
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Animals Parasitic ilt Man tapeworm,
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Animds l%msitz’c in Man solid foo
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larvae of the trichiia worm could n
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Animals Parasitic in Man fingers or
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Animuls Ibnz.sitic in Man excreta.
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Animals Parasitic in Man worms; and
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Animals Parasitic in Man are derive
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Animals Parasitic in Mdn biology of
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Animals Parasitic in Man chapter IO
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Animals Parasitic in Man the Bible
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Animals Parwitic in Man To a world
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Animah Parasitic in Man more space
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Further Reading \(Most of the liter
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Animals Parasitic in Man *McNalty,
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Auto-infection, 66 Avicenna, 297 Av
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h&X hosts and life history, 247-8,
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In&$ Grocer’s itch, 241 Hookworms
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Index Linguatula serrata, anatomy,
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supplies, 300-l ; hermaphroditism o
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In Signet&g stage of malarial paras
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Wuchcrera bancrofti, anatomy, life
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