Hello friends, this morning I am going to give you a small class of the Lumbricidae family that are nothing more than earthworms, they are animals that are grouped in the phylum (annelids), and of which there are hundreds of species distributed in the world, the The species to which we are going to make the frontal cut to see its parts is lumbricus terrestris, which is the common earthworm.🌍🧠🐛
Hola amigos esta mañana voy a darte una pequeña clases de la familia Lumbricidae que no son mas que las lombrices de tierra, son animales que estan agrupados en el filo (anelidos), y de los cuales hay cientos de especies distribuidos en el mundo, la especie a la que vamos a realizar el corte frontal para ver sus partes se trata de lumbricus terrestris que es la lombris de tierra comun.👨🏫👨🎓
let's learn ecology🙇♂️🤔/aprendamos la ecologia👨🏫
For this small experiment, I collected some species of Lumbricus terrestris from the ground and placed them in the ideal conditions so that they could reproduce in an artificial medium, we must place them in humidity and refrigeration without applying too much cold or they die! then I took two specimens to examine them, an adult and a "juvenile", this is the only large specimen that we can find in the Portuguese territory, measuring 10mm wide and about 35cm long, incredible, right? They are mature when they are one year old and have a long life expectancy of 6 years, although not all of them reach the maximum age since they are highly preyed on by various animals in the ecosystem!🐛👨🎓
Para este pequeño experimento recolecte de la tierra algunas especies de Lumbricus terrestris y las coloque con las condiciones ideales para que estas se pudiesen reproducir en un medio artificial, debemos colocarlas en humedad y refrigeracion sin aplicar mucho frio o mueren! luego tome dos ejemplares para examinarlos un adulto y un "juvenil", esta es el unico ejemplar de gran tamaño que podemos encontrar en el territorio Portugues, llegando a medir 10mm de anchura y unos 35cm de largo increible no? son maduras con el año de edad y tienen una esperanza de vida larga de 6 años, aunque no todas llegan a la maxima edad ya que son muy depredadas por diversos animales en el ecosistema!👨🏫🌍
Morphology🙇♂️🤔/Morfologia👨🏫
Without having to open the animal externally we can see how it is divided into a mouth, a gizzard, which is part of the digestive system and whose main function is to help the digestion of organic matter, normally many animals deposit sediments like stones that with a involuntary movement helps to break down the grind food into small pieces and finally the excretory orifice the anus🧠🤯🤔
Sin necesidad de abrir el animal externamente podemos ver como se divide en una boca, una molleja, que forma parte del sistema digestivo y que su principal funcion es de ayudar a la digestion de materia organica, normalmente muchos animales depositan sedimentos como piedras que con un movimiento involuntario ayuda a romper la moler la comida en trozes pequeños y por ultimo el orificio excretor el anus👨🏫👨🎓🐛
Earthworms have a cavity before the esophagus that serves as a compartment to store food that will later be directed towards the gizzard to be crushed, it is also known as proventriculus and if you look at the photo it has a different color, therefore it is a sign that there may be food stored here🤯🤔
Las lombrices de tierra tienen una cavidad antes del esofago que sirve como un compartimiento para almacenar la comida que posteriormente sera dirigida hacia la molleja para ser triturada, se le conoce tambien como proventriculo y si observas en la foto tiene un color diferente por tanto es señal que aqui puede haber comida almacenada👨🏫🐛
A very complex heart🙇♂️🤔/Un corazon muy complejo👨🏫
we could compare the circulatory system of earthworms with other animals and in this case it is closed, this means that the blood never reaches a "lagoon" that is, it always circulates between the blood vessels, they present several vessels including: "dorsal, ventral, subneural "But this species, how many hearts have one? And the answer is no!!! the number varies in each species, for example most of them have 5 hearts.🩸🩸
podriamos comparar el sistema circulatorio de las lombrices con otros animales y en este caso es cerrado, esto quiere decir que la sangre nunca llega a una "laguna" osea siempre circula entre los vasos sanguineos, presentan varios vasos incluyendo: "dorsal, ventral, subneural", pero esta especie cuantos corazones tienen uno? y la respuesta es no!!! el numero varia en cada especie, por ejemplo la mayoria de ellas tienen 5 corazones.🔬🧫
This could be said to be the "true heart", it is formed by a series of valves and can also contract, it is the main irrigator of the worms, it receives blood from the lateral "veins" and from the stomach to later pump it to the hearts🩸🔬
Este podria decirse que es el "corazon verdadero", esta formando por una serie de valvulas y puede tambien contraerse, es el principal irrigador de la lombris recibe sangre de las "venas" laterales y del estomago para luego bombearlo hasta los corazones🩸🩸
The vessels here are thicker because a greater surface area has to be irradiated, therefore they have a vital function, these are known as transverse vessels, they do not have an endothelial covering and therefore they are only made up of peritoneum.🔬🩸
los vasos aqui son mas gruesos porque hay que irradiar una superficie mayor, por tanto tienen una funcion vital, estos son conocidos como vasos transversales, no tienen una cubierta de endotelio y por tanto solo estan constituidos por peritoneo.👨🏫🤔
Longitudinal cut🙇♂️🤔/Corte longitudinal👨🏫
Worms carry out gas exchange through the "skin", when they are of a larger size they can contain hemoglobin dissolved in the plasma, in case you did not know, the body is surrounded by a membrane called: "clitelum" that produces a slime that it helps reproduction and is the explanation of why they are sticky and have a shine on their integument.🌍👨🎓
Las lombrices realizan el intercambio gaseoso atraves de la "piel", cuando son de un tamaño superior pueden contener hemoglobina disuelta en el plasma, por si no lo sabias el cuerpo esta rodeado por una membrana llamada: "clitelo" que produce una baba que la ayuda a la reproduccion y es la explicacion del porque son pegajosas y tienen un brillo en su tegumento.🔬🩸
Earthworms play an important role in the ecosystem, being able to ingest twice their body weight in organic matter, producing an organic compound that is like an excellent fertilizer, as well as being included in almost all trophic chains as the main food, birds, fish, worm-eating mammals and even some reptiles😁🤯🩸
Las lombrices de tierra cumplen un roll importante en el ecosistema pudiendo ingerir el doble de su peso corporal en materia organica, produciendo un compuesto organico que es como un excelente fertilizante ademas de estar incluido en casi todas las cadenas troficas como alimento principal, las aves, peces, mamiferos se alimentan de lombrices e incluzo algunos reptiles🌍🌍🐛😍
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