Saltar al contenido
Libros y Manuales de Agronomia

Entomología. Virus Entomopatógenos.pdf

Los virus entomopatógenos son organismos que generalmente se han utilizado para el control de plagas muy dañinas, sobretodo orugas.

Suelen ser muy virulentos y no muestran amenazas a las plantas ni a los humanos. Se conocen alrededor de 450 especies de virus capaces de causar enfermedades a insectos y ácaros.

Existen los Virus de la Polihedrosis Nuclear (VPN) y Los Virus de la Polihedrosis Citoplasmática; el primero se multiplica dentro del núcleo de la célula y el segundo se multiplica en el núcleo.

Por ser los Virus de la Polihedrosis Nuclear los de trascendencia en el manejo de Plagas, se destacará su importancia en este documento.

Modo de Acción de VPN

Resultado de imagen para virus entomopatogenos

El insecto debe comer el virus, el cual invade el cuerpo del mismo a través del intestino, entonces se multiplica en los tejidos de la plaga ocasionando trastornos fisiológicos. El insecto deja de comer, no puede ovopositar y se reducen sus movimientos, provocando la muerte dentro de tres a ocho días.

Síntomas

Las larvas afectadas por VPN suelen volverse blanquecinos y granular u oscuros. Suelen colgar del ápice de las ramas de las plantas o las hojas. El esqueleto queda licuificado y es quebrado fácilmente exponiendo los poliedros a medio, los que afectan a otros insectos.

Baculovirus

Es un virus de poliedrosis nuclear y granulosis, ataca insectos y otros artrópodos. Su código genético está contenido en ADN. Su material genético es fácilmente destruido con la exposición al sol u otras condiciones adversas.

El efecto es fatal para muchos insectos. La Infección puede ocurrir por ingesta o por vía de madre a hijos.

Estos virus son usados en numerosos cultivos y contra una importante cantidad de insectos como el Spodoptera littoralis en Algodón, tomate, maíz; Helicoverpa zea Heliothis virescens en algodón y vegetales; Spodoptera exigua en Vegetales e Invernaderos entre otros.

Te puede interesar  Características y clasificación de los INSECTOS. pdf gratis

Resultado de imagen para virus entomopatogenos

Virus Entomopatógenos
FAMILIA GÉNERO Ácido nucleico HOSPEDANTES
BACULOVIRIDAE BACULOVIRUS ADN Neuróptera, Trichoptera, Lepidóptera, Díptera, Hymenóptera, Coleóptera y Acaró. No vertebrados ni plantas
POXVIRIDAE ENTOMOPOXIVIRUS ADN Lepidóptera, Orthoptera, Coleóptera y Díptera. Vertebrados, no plantas.
REOVIRIDAE VIRUS DE LA POLIEDROSIS CITOPLASMÁTICA ARN Lepidóptera y Díptera. Vertebrados y plantas.

Poseen apenas un tipo de ácido nucleico, DNA o RNA

• Su composición química simple (ácido nucleico y proteína y en el caso de los virus provistos de membrana, carbohidratos y lípidos)
• No contienen información que generen energía.
• Tienen dimensiones submicroscópicas
• Se replican por un proceso de montaje y no de crecimiento/división.
• Son parásitos celulares obligatorios

 

Características de los virus entomopatógenos

• Presentan una doble cadena de ADN circular-superembobinada

• Sobre el ácido nucléico existe una capa de proteína conocida como cápsido, que tiene forma tubular; el nucleocápsido es el conjunto formado por el ADN y el cápsido

• El virión constituye la parte infectiva del virus y está compuesto por una envoltura que puede contener uno o más nucleocápsidos

• Existe una matriz protéica paracristalina que cubre a uno o más viriones, estructura a la que se conoce como cuerpo de inclusión.

 

VIRUS ENTOMOPATÓGENOS

-Baculoviridae solo afecta artrópodos
 Insectos
 Crustáceos
 Ácaros

Afectan a insectos y vertebrados:

-Reoviridae
-Poxviridae
-Picornaviridae
-Densoviridae
-Rhabdoviridae
-Iridioviridae

Autor:  – Hilda Gómez Ramirez  – hgomez@senasa.gob.pe

 

 

PARA DESCARGAR DAR CLICK AQUÍ:

 

Entradas relacionadas

Deja una respuesta

Tu dirección de correo electrónico no será publicada.

Comentarios (38)

Excellent blog here! Also your site quite a bit up fast!
What web host are you using? Can I get your associate link on your host?
I wish my site loaded up as fast as yours lol

Please let me know if you’re looking for a writer for your site.
You have some really good articles and I think I
would be a good asset. If you ever want to take some of the load off,
I’d really like to write some material for your blog in exchange for a
link back to mine. Please send me an email if interested.
Kudos!

I just want to say I am just new to blogging and honestly liked this web page. More than likely I’m going to bookmark your blog . You certainly have good stories. With thanks for sharing your webpage.

Simply a smiling visitor here to share the love (:, btw outstanding design . “Audacity, more audacity and always audacity.” by Georges Jacques Danton.

I can see that you are an expert at the field! I’m starting a website quickly, and your info will be very useful for myself.. Thank you for your entire aid and wishing you all the actual success inside your enterprise.

Excellent website you have here but I was curious if you knew of any message boards that cover the same topics discussed in this article? I’d really love to be a part of group where I can get opinions from other experienced individuals that share the same interest. If you have any recommendations, please let me know. Thanks!

Excellent post but I was wondering if you could write a litte more on this topic? I’d be very grateful if you could elaborate a little bit more. Kudos!

I found your website through a random stroke of luck. It helped me do my research on this topic. Its amazing to think one site could contain so muck information. You are doing the great work!

It’s very trouble-free to find out any topic on net as compared to books, as I found this paragraph at this web page.

Right here is the perfect blog for anybody who wishes to understand this topic. You know a whole lot its almost tough to argue with you (not that I personally will need to…HaHa). You definitely put a brand new spin on a subject that has been discussed for decades. Excellent stuff, just excellent!

I am really surprised. Truly appreciate your efforts and intention in publishing this article. Great work

You actually make it seem so easy with your presentation however I in finding this topic to be really something that I think
I would never understand. It seems too complex and very extensive for me.
I’m having a look forward for your subsequent submit, I will try to get the grasp of it!

I’m not sure why but this website is loading very slow for me.
Is anyone else having this problem or is it a problem
on my end? I’ll check back later on and see if the problem
still exists.

Everyone loves it when people come together and share views. Great website, keep it up!

I do not even know how I ended up here, but I thought this post was
great. I do not know who you are but certainly you’re going to a famous blogger
if you are not already 😉 Cheers!

I loved as much as you’ll receive carried out right here.
The sketch is tasteful, your authored subject matter stylish.
nonetheless, you command get got an nervousness over that you wish be delivering the following.
unwell unquestionably come further formerly again as exactly the same nearly a lot often inside case you
shield this increase.

Best view in the town !

Best view in the town !

Thank you for the nice writeup. It in fact was an amusing account it. Look forward to far posts from you! By the way, how could we communicate?

Foot fetish pics from Hardy

Best view in the town !

Love watching movies !

Love watching movies !

Best view in the town !

Hello, i think that i noticed you visited my site so i came to go back the desire?.I’m attempting to in finding things to enhance my site!I guess its adequate to make use of a few of your concepts!!

Everything is very open with a very clear description of the challenges.

It was definitely informative. Your website is useful.
Many thanks for sharing!

It’s actually a great and helpful piece of info.
I am happy that you simply shared this useful info with us.
Please stay us informed like this. Thanks for sharing.

Fantastic blog! Do you have any tips and hints for aspiring
writers? I’m planning to start my own site soon but I’m a little lost on everything.
Would you propose starting with a free platform like WordPress or go for a paid
option? There are so many options out there that I’m completely overwhelmed ..
Any recommendations? Appreciate it!

Great post. I was checking continuously this blog and I
am impressed! Extremely useful information specially the last part 🙂 I care for such info much.
I was seeking this certain info for a very long time.
Thank you and best of luck.

Hi there! This is kind of off topic but I need some guidance from an established blog.
Is it difficult to set up your own blog? I’m not very techincal but
I can figure things out pretty fast. I’m thinking about setting
up my own but I’m not sure where to start.
Do you have any tips or suggestions? With thanks

I was recommended this blog by my cousin. I am not sure whether this post
is written by him as no one else know such detailed about my trouble.

You are amazing! Thanks!

When I initially left a comment I appear to have clicked the -Notify me when new comments are added- checkbox and now whenever a comment is added I get four emails with the exact same comment. Perhaps there is a way you are able to remove me from that service? Thank you!

Pretty section of content. I just stumbled upon your web site and in accession capital to assert that I get in fact enjoyed account your blog posts. Anyway I will be subscribing to your augment and even I achievement you access consistently quickly.

I always used to read article in news papers but now as I am a user of web
therefore from now I am using net for articles, thanks to web.
cheap flights yynxznuh

whoah this weblog is magnificent i really like reading your posts.
Keep up the great work! You realize, many people are searching round for
this info, you could aid them greatly. y2yxvvfw
cheap flights

Great post however I was wondering if you could write a
litte more on this topic? I’d be very grateful if you could elaborate a little bit further.
Kudos! cheap flights y2yxvvfw

I’m really impressed with your writing skills as smartly as with the structure for
your blog. Is that this a paid theme or did you customize it yourself?
Anyway stay up the nice high quality writing, it is rare to peer a nice weblog like this one nowadays..

Very helpful! Is there anything more I should think about next? Or is this enough?

Vivero. Primer paso para el éxito del cultivo del aguacate
Manejo y protección de la floración para cosecha temprana de mango cv. Haden en Michoacán, México
Manual de Ecología y medio ambiente. PDF GRATIS
Manual de Biofertilizantes. pdf Gratis
Manual de plagas y Enfermedades de Ajies y Pimiento. PDF Gratis
Cultivo Técnico del Apio. pdf gratis
Manual del cultivo de APIO. pdf gratis
Manual del cultivo de pepino en invernadero. PDF Gratis
Guía de identificación Pulgones y sus enemigos naturales

Se conocen más de 4000 especies de pulgones en el mundo,...

Oruga serpiente

Oruga serpiente. Llamada así por la capacidad que tienen de parecerse...

MIP de plagas del cultivo de maíz. PDF GRATIS

En el Perú, en el cultivo de maíz las pérdidas de...

Principales plagas del tomate

Uno de los principales problemas en el control de plagas de...

Manual de almacigos de hortalizas. pdf GRATIS

El almácigo es la práctica específica en donde se realiza la germinación de...

Como hacer un trasplante en tu huerto

Es muy importante realizar trasplantes de maceta de nuestras plantas, sobre...

Secado de frutas y verduras de manera artesanal

Proceso de deshidratación de frutas. La deshidratación es una de las formas...

5 Formas de desinfectar el suelo para el huerto- Pdf Gratis

La desinfección de suelos es una práctica que se emplea principalmente...

Manual de Biofertilizantes. pdf Gratis
Manual de Producción y utilización de Trichoderma
Fabricación de jabón y detergente para combatir plagas
Manual de Elaboración, uso y manejo de abonos orgánicos
Manejo y protección de la floración para cosecha temprana de mango cv. Haden en Michoacán, México
Manual Manejo agronómico del cultivo de Arandano. pdf gratis
Guia Tecnica del cultivo de Pitahaya en la región amazonas. PDF GRATIS
Manual del Cultivo de Melón. PDF GRATIS
Como controlar la heladas
Cómo hacer un filtro purificador de agua casero
▷Rotación y Asociaciones de los cultivos ✓Libros de Agronomia gratis pdf
Plagas y Enfermedades de la plantas: Diagnostico e identificación
Como Fertilizar el cultivo de papaya
Herbicidas, tipos
Que son los funguicidas, tipos
Empresa de vodka peruano producirá alcohol de papa para proteger a familias campesinas
Que es poda, tipos de podas en frutales
Manual de Propagación por Estacas. Libros gratis
✅ MANUAL DE PORTAINJERTOS EN VID – PDF GRATIS
Manual de poda de Cítricos – pdf gratis