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เข้าร่วมเมื่อ 19 พ.ย. 2021
Csir net qualified ( 1st attempt),Msc zoology gold medalist
Providing nots with explanation
Providing nots with explanation
Classification, general characteristics, distribution, Life-cycle, mode of infection of wuchereria.
Wuchereria bancrofti- Habitat, Morphology and Life Cycle
Table of Contents
Systematic Position of Wuchereria bancrofti
Habits and Habitat of Wuchereria bancrofti
1. Adult worms
2. Microfilaria
Periodicity of Microfilariae
3. Third stage of the larva (infective form)
Life cycle of Wuchereria bancrofti
a. Copulation
b. Larval development in man
c. Development in mosquito
d. Infection of the new human host
References and Sources
Systematic Position of Wuchereria bancrofti
Phylum: Nematoda
Class: Phasmidia
Order: Filaroidea
Family: Filariidae
Genus: Wuchereria
Species: bancrofti
Habits of Wuchereria bancrofti and Their Environment
The filarial worm, Wuchereria bancrofti, is a human endoparasite that is
feared.
It is a digenetic parasite that need two hosts to complete its life cycle. The
intermediate host is bloodsucking insects, such as female mosquitoes of
the genus Culex, Aedes, or Anopheles, while the final host is man, who
harbors the adult worms.
Adult worms dwell coiled up in the human lymphatic system, where they
frequently block the lymphatic movement.
The larvae, also known as microfilariae, are discovered in peripheral blood
and, on occasion, in hydrocele fluid or chylous urine.
Morphology of Wuchereria bancrofti
1.adults worm
These worms are long, hair-like, translucent, transparent, thread-like, tapering-ended, and
have smooth cuticles.
They are cylindrical, filiform, and taper at both ends.
There is a clear sexual dimorphism between the sexes.
Compared to the male (25-40 × 0.1 mm), the female is bigger (70-100 × 0.25 mm).
The male worm has a vertically curved rear end with two copulatory spicules of uneven
length and numerous genital papillae, while the female worm has a narrow, pointed
posterior end with an anus.
Typically, males and females stay coiled together in the testicular tissues, inguinal
lymphatics, and abdominal lymphatics.
It has a somewhat larger head end.
There are no lips and a plain mouth opening.
An anterior muscular portion and a posterior muscular section make up the pharynx.
The female's vulva has a pyriform ejector mechanism and is situated ventrally in the
pharyngeal area.
Sheathed microfilariae are released into the lymph by the viviparous female worm.
Adult worms typically live for ten to fifteen years or longer.
2. Microfilaria
Microfilaria are the larvae at their first stage.
Their bodies are transparent and colorless, with pointed tails and blunt front ends.
They may travel forward and backward within the sheath, which is significantly longer
than the embryo, and are highly active.
They are minuscule, with dimensions of 6-10 μm for thickness and 250-300 μm for
length.
A hyaline sheath covers its body, and then a cuticula lined with flattened subcuticular
cells or epidermis and an inner column of cytoplasm with nuclei follow. It has distinct
striations on its cuticle.
With the exception of the 5% terminal end of the tip, somatic cella or nuclei appear as
granules in the body's central axis that extends from head to tail.
Their head-end features cephalic space, which is a clean area free of granules.
Future mouth or oral stylet, nerve ring: oblique area without granules, nephridiopore,
renette cell, dark-colored inner mass, and four cells of the future anus are important
structures from the anterior end downward.
Unless they are ingested by their appropriate host (mosquitoes), they do not continue to
develop within the human body.
They most likely have a 70-day lifespan in the human body.
Periodicity of Microfilariae
The bloodstream is where the microfilariae move.
They exhibit a nocturnal periodicity in peripheral circulation in China, India,
and many other Asian nations. They are only observed in significant
quantities in peripheral blood at night (between 10 p.m. and 4 a.m.), but they
vanish indoors during the day. They are thought to withdraw into the deeper
blood artery throughout the day. This is consistent with the vector Culex
mosquito's propensity to bite at night.
The microfilariae are diurnal subperiodic or nonperiodic in the Pacific
islands and sections of the Malaysian archipelago, meaning they are
constantly in peripheral circulation with a modest peak in the late afternoon
or evening. This relates to the behavior of day-biting of the local vactor
mosquito
3. The infectious form of the larva's third stage
The parasite's infectious third stage larva is exclusively found in mosquitoes.
Their dimensions are 18-23 µm in diameter, 1.5 mm in length, and filariform.
Wuchereria bancrofti life cycle
Wuchereria bancrofti is digenetic, meaning that it has two hosts throughout its life cycle.
Man is the ultimate host. There is no known animal host or reservoir for W. bancrofti.
The host in between: female mosquitoes from the genera Anopheles, Aedes, and Culex.
Playlist:-
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Table of Contents
Systematic Position of Wuchereria bancrofti
Habits and Habitat of Wuchereria bancrofti
1. Adult worms
2. Microfilaria
Periodicity of Microfilariae
3. Third stage of the larva (infective form)
Life cycle of Wuchereria bancrofti
a. Copulation
b. Larval development in man
c. Development in mosquito
d. Infection of the new human host
References and Sources
Systematic Position of Wuchereria bancrofti
Phylum: Nematoda
Class: Phasmidia
Order: Filaroidea
Family: Filariidae
Genus: Wuchereria
Species: bancrofti
Habits of Wuchereria bancrofti and Their Environment
The filarial worm, Wuchereria bancrofti, is a human endoparasite that is
feared.
It is a digenetic parasite that need two hosts to complete its life cycle. The
intermediate host is bloodsucking insects, such as female mosquitoes of
the genus Culex, Aedes, or Anopheles, while the final host is man, who
harbors the adult worms.
Adult worms dwell coiled up in the human lymphatic system, where they
frequently block the lymphatic movement.
The larvae, also known as microfilariae, are discovered in peripheral blood
and, on occasion, in hydrocele fluid or chylous urine.
Morphology of Wuchereria bancrofti
1.adults worm
These worms are long, hair-like, translucent, transparent, thread-like, tapering-ended, and
have smooth cuticles.
They are cylindrical, filiform, and taper at both ends.
There is a clear sexual dimorphism between the sexes.
Compared to the male (25-40 × 0.1 mm), the female is bigger (70-100 × 0.25 mm).
The male worm has a vertically curved rear end with two copulatory spicules of uneven
length and numerous genital papillae, while the female worm has a narrow, pointed
posterior end with an anus.
Typically, males and females stay coiled together in the testicular tissues, inguinal
lymphatics, and abdominal lymphatics.
It has a somewhat larger head end.
There are no lips and a plain mouth opening.
An anterior muscular portion and a posterior muscular section make up the pharynx.
The female's vulva has a pyriform ejector mechanism and is situated ventrally in the
pharyngeal area.
Sheathed microfilariae are released into the lymph by the viviparous female worm.
Adult worms typically live for ten to fifteen years or longer.
2. Microfilaria
Microfilaria are the larvae at their first stage.
Their bodies are transparent and colorless, with pointed tails and blunt front ends.
They may travel forward and backward within the sheath, which is significantly longer
than the embryo, and are highly active.
They are minuscule, with dimensions of 6-10 μm for thickness and 250-300 μm for
length.
A hyaline sheath covers its body, and then a cuticula lined with flattened subcuticular
cells or epidermis and an inner column of cytoplasm with nuclei follow. It has distinct
striations on its cuticle.
With the exception of the 5% terminal end of the tip, somatic cella or nuclei appear as
granules in the body's central axis that extends from head to tail.
Their head-end features cephalic space, which is a clean area free of granules.
Future mouth or oral stylet, nerve ring: oblique area without granules, nephridiopore,
renette cell, dark-colored inner mass, and four cells of the future anus are important
structures from the anterior end downward.
Unless they are ingested by their appropriate host (mosquitoes), they do not continue to
develop within the human body.
They most likely have a 70-day lifespan in the human body.
Periodicity of Microfilariae
The bloodstream is where the microfilariae move.
They exhibit a nocturnal periodicity in peripheral circulation in China, India,
and many other Asian nations. They are only observed in significant
quantities in peripheral blood at night (between 10 p.m. and 4 a.m.), but they
vanish indoors during the day. They are thought to withdraw into the deeper
blood artery throughout the day. This is consistent with the vector Culex
mosquito's propensity to bite at night.
The microfilariae are diurnal subperiodic or nonperiodic in the Pacific
islands and sections of the Malaysian archipelago, meaning they are
constantly in peripheral circulation with a modest peak in the late afternoon
or evening. This relates to the behavior of day-biting of the local vactor
mosquito
3. The infectious form of the larva's third stage
The parasite's infectious third stage larva is exclusively found in mosquitoes.
Their dimensions are 18-23 µm in diameter, 1.5 mm in length, and filariform.
Wuchereria bancrofti life cycle
Wuchereria bancrofti is digenetic, meaning that it has two hosts throughout its life cycle.
Man is the ultimate host. There is no known animal host or reservoir for W. bancrofti.
The host in between: female mosquitoes from the genera Anopheles, Aedes, and Culex.
Playlist:-
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มุมมอง: 7
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Which gene functions in organ initialisation? CLV 1 OR CLV 3??
Both clv 1 & clv3 important for organ initialisation because clv3 made ligand that act by attaching on their receptor made by clv 1
Kuch samjh nhi aya confuse kr rahe
Sir mene OBC state ka upload karke exam diya tha mera clear vi hogaya h Lekin ab mujhe pata chala k mera category central list me ata hi nehi is liye mujhe district se central wala ncl nehi diya, par state NCL diya he Abb me kya karun, kya mera JRF cancel ho jayega?? Please reply kijiye sir
@@nasrinara885 jrf cancel nhi hoga don't worry , and please contact to this number :- 011-25848155 for more clarification....& Congratulations 🎉
Ma'am, I'm in the same position. I qualified the cut off for general merit JRF but my caste is not on central list. Really don't know what to do or if they'll change it now.
Ma'am did you contact anyone?
@@divyahart5802 i have State NCL which is signed by deputy magistrate and deputy collector I ask to csir authority they told me if I have NCL signed by any reputed authority of recent time then it will be accepted
@@studywithashu5263 thank you sir for clarifying
Genetics Unit-IV Laws of heredity, Co- and incomplete dominance; Linkage and linkage maps; Varieties of gene expression: lethal genes, multiple alleles, pleiotropic genes, gene interactions, epistasis; Structural and numerical alterations of chromosomes and meiotic consequences: Extrachromosomal inheritance: mitochondrial, maternal inheritance; Sex-chromosome systems; Different mechanisms of sex determination in animals and their molecular mechanism. Unit-V Chromosomal disorders and common human syndromes; Amniocentesis and its application; Biology of twins; Polyembryony, Free Martin; Genetic counseling: Polygenic inheritance: heritability and its measurements; Pedigree analysis; C value paradox; Lod score for linkage testing: Homologous and non-homologous recombination. This much in our syllabus
Bro can you please give🙏 the pdf of physiology ? For Msc zoology
Can you please provide pdf notes for Genetics ..? For Msc zoology.. please 🙏
@@TheHope045 topic name?
@@studywithashu5263 Genetics Unit-IV Laws of heredity, Co- and incomplete dominance; Linkage and linkage maps; Varieties of gene expression: lethal genes, multiple alleles, pleiotropic genes, gene interactions, epistasis; Structural and numerical alterations of chromosomes and meiotic topic ones generachromosomal inheritance: mitochondrial, maternal inheritance; Sex-chromosome systems; Different mechanisms of sex determination in animals and their molecular mechanism. Unit-V Chromosomal disorders and common human syndromes; Amniocentesis and its application; Biology of twins; Polyembryony; Free Martin; Genetic counseling; Polygenic inheritance: heritability and its measurements; Pedigree analysis; C value paradox; Lod score for linkage testing: Homologous and non-homologous recombination. This much
@@studywithashu5263 Genetics Unit-IV Laws of heredity, Co- and incomplete dominance; Linkage and linkage maps; Varieties of gene expression: lethal genes, multiple alleles, pleiotropic genes, gene interactions, epistasis; Structural and numerical alterations of chromosomes and meiotic consequences Extrachromosomal inheritance: mitochondrial, maternal inheritance; Se×-chromosome systems; Different mechanisms of sex determination in animals and their molecular mechanism. Unit-V Chromosomal disorders and common human syndromes; Amniocentesis and its application; Biology of twins; Polyembryony; Free Martin; Genetic counseling; Polygenic inheritance: heritability and its measurements; Pedigree analysis; C value paradox; Lod score for linkage testing: Homologous and non-homologous recombination.
@@studywithashu5263 Genetics Unit-IV Laws of heredity, Co- and incomplete dominance; Linkage and linkage maps; Varieties of gene expression: lethal genes, multiple alleles, pleiotropic genes, gene interactions, epistasis; Structural and numerical alterations of chromosomes and meiotic consequences: Extrachromosomal inheritance: mitochondrial, maternal inheritance; Sex-chromosome systems; Different mechanisms of sex determination in animals and their molecular mechanism. Unit-V Chromosomal disorders and common human syndromes; Amniocentesis and its application; Biology of twins; Polyembryony, Free Martin; Genetic counseling: Polygenic inheritance: heritability and its measurements; Pedigree analysis; C value paradox; Lod score for linkage testing: Homologous and non-homologous recombination. This much in our syllabus
Please provide pdf
How can we get pdf
@@MuskanGupta-ez8hm drive.google.com/file/d/1E94koQ0JmaPOQIJw-xUklMM56yi0hBpV/view?usp=drivesdk
It is very easy lecture 😊. thank you so much.. God bless u sir
@@ImrankhanKhan-jk1wr thank you so much for this wonderful feedback 🥰
Thank you sir
Hlo
@@AashaKori-rc3jc yes, how may I help you?
@@studywithashu5263 sir mujhe Hindi medium book chahiye
😊 thank you🙏
Pdf nai available ish ki link meh
@@HarpreetSingh-x5x drive.google.com/file/d/1CntDeF2DeC12u0p5tNMVPR3PL7iJVhCe/view?usp=drivesdk
Sir can you provide the pdf
Please check description, pdf link available in description
Thanks 😊
❤
Thank you sir 🙏🏻
Completely good lecture Thank you sir 🙏🏻
r u off today..
@@vikaskarwasara yes you can consider
Valuable for understanding
Worthy video sir ji Thank you
@@vikaskarwasara worthy mean
Thank you sir
@@vikaskarwasara thank you for the material
Kon sa university se ho sir
@@umeshsahu9869 vivekananda global university, jaipur ( raj.)
Hello sir
Thank you sir
Thank you sir 🙏🏻
Thanku
@@deepshikha4026 thank you for comment💬 🥰
😊thank you pura topic samj gya😊
@@VIshnukumar_vkd890 thanks for feedback🥰🥰🥰
EXCELLENT VIDEO
@@ankitachowdhury5268 thank you so much🥰🥰
Improve your concepts
Ok, thanks for your feedback 🥰
👍
Are bhai clear bola kro tumhara consept hi clear nhi lg rha hai 🤦🤦🤦
Thank you so much it was really helpful please 2021 2022 ,2023 ka bhi krwa dijiye please
@@pratibhamishra5370 here is your video on your demand :- th-cam.com/video/YiweRaa-Vqg/w-d-xo.html
Kyun kru itni pdaaii m
Is there any mistake in video?
Bakwaas video
Pehle khud padhle tab hme padhana
At that time, my main motif for making video is educating myself, I apologize for many mistakes made by me in this video. I also regret to see some of my previous old videos that have mistakes, but I learned so much from my mistakes and now our recent videos have standard quality of constant ( eg. Csir net series playlist) , Heartily sorry again 🙏🏼🙏🏼
@@studywithashu5263don't worry bro it was good, got some information about it before exam. Thanks 👍🏻
@@stefen4069 thank you so much for understanding and cooperation 🫶🙏
18:42
Sir mene state ka certificate upload kr diya and Central ka bn k nhi aa paya correction window bnd ho gya m kya kru sir ab...???
Sir plz reply
Koi problem nhi hoga , don't worry
Thankyou sir
@@kushsiavlog most walcome 🤗
Bhai kese banwaya central obc certificate can you tell me in brief
Well explained
Thank you so much😇 🙏🏼
Nice explanation
Thank you🙏
🎮🎮 😅
Counselling kya hoti hai???
Selection k baad email k through documents verification.
@@studywithashu5263 oo tab sare documents original dikhane hote hai kya??
@@scholarmanish ha ji, vese konsa exam hai aapka ugc net ya fir csir net
@@studywithashu5263 CSIR NET..
@@studywithashu5263 csir-ugc net..
Thankyou sir🙌
Aur is saal 2024 june k liye? Plz reply kijiyega 🙏
For more clarity you can contact directly to CSIR helpline Number, 011-69227700
@@studywithashu5263 ok thanku 🙏🥰
@@studywithashu5263 aap poochhkr bta do pleeeeeeeeaase 🥲🙏
@@aanchal4310 kab ka hai aapka certificate
@@studywithashu5263 5-6 saal purana 😅
From which book u have made to notes please suggest
Very informative video for net jrf thank you
Thank you so much for feedback 😇🙏🏼
Thanks again sir❤
Thanku sir😊
Thank you sir 🙏🏻 ☺️
👍👍❤
Thank you sir I wanna meet you once
Many many thanks you sir.. You kept your words ❤👍👍👍
🙏🏼🙏🏼