Descripción de las características diagnósticas del orden de los salmones. Actividad realizada como parte de los trabajos del curso de Ictiología (2020-I) de la Carrera de Biología Marina de la Universidad Autónoma de Baja California Sur.
Descripción de las características diagnósticas del orden de los salmones. Actividad realizada como parte de los trabajos del curso de Ictiología (2020-I) de la Carrera de Biología Marina de la Universidad Autónoma de Baja California Sur.
SYSTEMATIC POSITION of clams
What is the difference between mussels, oysters, scallops and clams?
General characteristics of clams
Distribution and habitat of clams
BIOLOGY of clams
Breeding habit of clams
Present status of production
Craft and gear
Clams have two symmetrical shells(Bivalve)
They can filters their food
Clams can control their outer shells and shut them in response to stimuli, via a elastic ligament and two large muscles
In side their usually grey, black shells you can see a white, tan center
Clams have siphons that forces water out and allows them to take in micro organisms
There are over 150 edible species.There are over 15,000 species of clams.Small freshwater clams fertilize eggs in a pouch and bear their young until its shell develops.
The Giant clam can weigh more than 400lb and live for over 150 years.
It takes 3-4 years for a clam to mature to market size.
Some clams can produce pearls.One in 5,000 clams forms a pearl.
A clam can live until about 35 years if not eaten.
distribution:
Marine clams are abundant in the low and mid intertidal zone in temperate seas globally. Other species of marine mussel live in tropical intertidal areas, but not in the same huge numbers as in temperate zones.
Certain species of marine clams prefer salt marshes or quiet bays, while others thrive in pounding surf, completely covering wave-washed rocks. Some species have colonized abyssal depths near hydrothermal vents. The South African white mussel exceptionally doesn't bind itself to rocks but burrows into sandy beaches extending two tubes above the sand surface for ingestion of food and water and exhausting wastes.
Freshwater clams inhabit permanent lakes, rivers, canals and streams throughout the world except in the polar regions. They require a constant source of cool, clean water. They prefer water with a substantial mineral content, using calcium carbonate to build their shells.
Answering a question on Planktology course for 2nd year B.Sc. student at University of Chittagong, Chattogram 4331, Bangladesh. Submission date: 28th November, 2018.
The continental shelf is an underwater landmass which extends from a continent, resulting in an area of relatively shallow water known as a shelf sea. Much of the shelves were exposed during glacial periods and interglacial periods
Introduction The Gastropods - Phylum Mollusca - Second largest class.
Includes - sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs.
The most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species.
Older classification of the gastropods
Opisthobranchia (gills to the right and behind the heart).
Gymnomorpha (no shell).
Prosobranchia (gills in front of the heart).
Pulmonata (with a lung instead of gills).
Phylum Mollusca, Class Polyplacophora, Class Monoplacophora, Phylogenetic con...Dr. Muhammad Moosa
In this presentation, Phylum Mollusca Is described. After watching this you will learn Evolutionary Perspective of Mollusca and Relationships to Other Animals, Molluscan Characteristics, Class Gastropoda, Torsion, Shell Coiling, Locomotion, Feeding and Digestion, Other Maintenance Functions, Reproduction and Development, Gastropod Diversity, Class Bivalvia, Shell and Associated Structures Gas Exchange, Filter Feeding, and Digestion, Other Maintenance Functions Reproduction and Development, Bivalve Diversity, Class Cephalopoda, Shell, Locomotion, Feeding and Digestion, Other Maintenance Functions, Learning, Reproduction and Development, Class Polyplacophora, Class Scaphopoda, Class Monoplacophora, Class Solenogastres, Class Caudofoveata, Further Phylogenetic Considerations. It is part of BS Zoology Course, Animal diversity.
SYSTEMATIC POSITION of clams
What is the difference between mussels, oysters, scallops and clams?
General characteristics of clams
Distribution and habitat of clams
BIOLOGY of clams
Breeding habit of clams
Present status of production
Craft and gear
Clams have two symmetrical shells(Bivalve)
They can filters their food
Clams can control their outer shells and shut them in response to stimuli, via a elastic ligament and two large muscles
In side their usually grey, black shells you can see a white, tan center
Clams have siphons that forces water out and allows them to take in micro organisms
There are over 150 edible species.There are over 15,000 species of clams.Small freshwater clams fertilize eggs in a pouch and bear their young until its shell develops.
The Giant clam can weigh more than 400lb and live for over 150 years.
It takes 3-4 years for a clam to mature to market size.
Some clams can produce pearls.One in 5,000 clams forms a pearl.
A clam can live until about 35 years if not eaten.
distribution:
Marine clams are abundant in the low and mid intertidal zone in temperate seas globally. Other species of marine mussel live in tropical intertidal areas, but not in the same huge numbers as in temperate zones.
Certain species of marine clams prefer salt marshes or quiet bays, while others thrive in pounding surf, completely covering wave-washed rocks. Some species have colonized abyssal depths near hydrothermal vents. The South African white mussel exceptionally doesn't bind itself to rocks but burrows into sandy beaches extending two tubes above the sand surface for ingestion of food and water and exhausting wastes.
Freshwater clams inhabit permanent lakes, rivers, canals and streams throughout the world except in the polar regions. They require a constant source of cool, clean water. They prefer water with a substantial mineral content, using calcium carbonate to build their shells.
Answering a question on Planktology course for 2nd year B.Sc. student at University of Chittagong, Chattogram 4331, Bangladesh. Submission date: 28th November, 2018.
The continental shelf is an underwater landmass which extends from a continent, resulting in an area of relatively shallow water known as a shelf sea. Much of the shelves were exposed during glacial periods and interglacial periods
Introduction The Gastropods - Phylum Mollusca - Second largest class.
Includes - sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs.
The most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species.
Older classification of the gastropods
Opisthobranchia (gills to the right and behind the heart).
Gymnomorpha (no shell).
Prosobranchia (gills in front of the heart).
Pulmonata (with a lung instead of gills).
Phylum Mollusca, Class Polyplacophora, Class Monoplacophora, Phylogenetic con...Dr. Muhammad Moosa
In this presentation, Phylum Mollusca Is described. After watching this you will learn Evolutionary Perspective of Mollusca and Relationships to Other Animals, Molluscan Characteristics, Class Gastropoda, Torsion, Shell Coiling, Locomotion, Feeding and Digestion, Other Maintenance Functions, Reproduction and Development, Gastropod Diversity, Class Bivalvia, Shell and Associated Structures Gas Exchange, Filter Feeding, and Digestion, Other Maintenance Functions Reproduction and Development, Bivalve Diversity, Class Cephalopoda, Shell, Locomotion, Feeding and Digestion, Other Maintenance Functions, Learning, Reproduction and Development, Class Polyplacophora, Class Scaphopoda, Class Monoplacophora, Class Solenogastres, Class Caudofoveata, Further Phylogenetic Considerations. It is part of BS Zoology Course, Animal diversity.
DIAPOSITIVA 1
Nuestra Naturaleza.
DIAPOSITIVA 2
Los seres vivos y la naturaleza.
DIAPOSITIVA 3
Los ecosistemas.
En nuestro planeta Tierra podemos encontrar diferentes tipos de ecosistemas:
*Los acuáticos
*Los aero-terrestres, en ambos casos, están presentes el Biotopo y la Biocenosis que interactúan continuamente manteniendo un perfecto equilibrio en la naturaleza intercambiando materia y energía.
DIAPOSITIVA 4
Las cadenas alimenticias.
DIAPOSITIVA 5
Los invertebrados.
*Forman el grupo más numeroso de animales.
*Carecen de columna vertebral y de esqueleto óseo interno articulado.
DIAPOSITIVA 6
Invertebrados
*Poríferos: Son organismos que viven en el mar. Las esponjas pertenecen a este grupo.
*Cnidarios:A estos organismos también los encontramos en el mar. Las medusas, corales y anémonas de mar integran este grupo.
DIAPOSITIVA 7
Invertebrados
*Artrópodos: Constituyen un grupo muy grande de invertebrados,los arácnidos, los crustáceos, los miriápodos y los insectos, estos últimos poseen la capacidad de volar.
*Gusanos: Son organismos de cuerpo alargado y plano, cilíndrico y formado por anillos, el grupo se compone de platelmintos, planarias, nematodos y anélidos.
DIAPOSITIVA 8
Invertebrados
*Estrellas y erizos de mar: Son los equinodermos y habitan en el fondo de los mares.Estrella de mar, erizo de mar.
*Moluscos:Viven en el mar o en ambientes terrestres húmedos. Los pulpos, calamares, las lapas, babosas de mar, caracoles de todo tipo y los bivalvos.
DIAPOSITIVA 9
Los Vertebrados
Son animales que poseen un esqueleto interno articulado, le permite estar erguido y desplazarse.
Su principal característica es la presencia de una columna vertebral.
DIAPOSITIVA 10
Vertebrados
*Peces:Son vertebrados adaptados para vivir en el agua.
Encontramos una gran variedad, entre ellos están los cartilaginosos y óseos.
*Anfibios:Nacen de huevos en el agua y luego habitan la tierra. Integran este grupo las ranas, los sapos, salamandras y tritones.
DIAPOSITIVA 11
Vertebrados
*Reptiles: Es un grupo numeroso formado por lagartos, serpientes, caimanes, cocodrilos, tortugas terrestres y acuáticas.
*Aves: Son vertebrados adaptados al vuelo, sin embargo, algunas especies no lo hacen, tal es el caso de los pingüinos, avestruces y ñandúes.
DIAPOSITIVA 12
Vertebrados
*Mamíferos
DIAPOSITIVA 13
Los Vertebrados e Invertebrados y sus caracteristicas (Video)
Buenas tardes esta es un clase de Ciencias Naturales para estudiantes de primero y segundo de basica donde se les enseña a breves rasgos sobre el reino animal sus caracteristicas y su utilidad.
La mycoplasmosis aviar es una enfermedad contagiosa de las aves causada por bacterias del género Mycoplasma. Esencialmente, afecta a aves como pollos, pavos y otras aves de corral, causando importantes pérdidas económicas en la industria avícola debido a la disminución en la producción de huevos y carne, así como a la mortalidad.
1. BRAVO CARMONA LAURA.
DE JESUS QUIROZ DIANA LAURA.
GUZMÁN ENRÍQUEZ GUADALUPE.
GUTIÉRREZ BAEZ RODRIGO.
2. Se llama bentos a la comunidad formada por los organismos
que habitan el fondo de los ecosistemas acuáticos.
Las comunidades bentónicas más
productivas y de mayor biodiversidad, y
también probablemente las más
amenazadas, son los arrecifes de coral.
3. Muchos taxones (grupos biológicos) notables están
especializados para residir en el bentos. El phylum entero de los
equinodermos (estrellas y erizos de mar)
4. El orden Pleuronectiformes (lenguados y semejantes) es un
ejemplo de peces adaptados a la vida en el bentos. También los
pulpos o las sepias entre los cefalópodos, y la clase de los
bivalvos entre los otros moluscos.
5. Tales organismos pueden
clasificarse en hiperbentos
• Organismos con buena capacidad de nado que
realizan migraciones verticales sobre el medio en que
se desarrollan.
Epibentos • Organismos que habitan sobre la superficie
del sustrato.
Endobentos
• Organismos que viven enterrados
en el sustrato.
6. Características.
Importancia primaria del agua de fondo.
Los bentos son tolerantes a las
Variaciones de temperatura y
Salinidad del agua de mar.
Agua ayuda al trasporte de los alimentos.
8. Bentos móviles. Raptan o se entierran, moviéndose para colectar su alimento.
Babosas marinas.
Estrellas de mar.
Caracoles.
9. FUENTES DE ALIMENTACIÓN.
Las principales fuentes de alimento en el plancton y el bentos
son sustancias orgánicas que llegan arrastradas desde tierra
firme
En las aguas costeras y otros lugares donde la luz alcanza el
fondo, pueden proliferar las diatomeas bentónicas
fotosintetizadoras.
10. Los invertebrados filtradores, como las
esponjas y bivalvos, dominan los fondos
duros y arenosos.
Los sedimentívoros, como los poliquetos, pueblan los fondos
blandos.
11. Peces, estrellas de mar, caracoles,
cefalópodos y crustáceos constituyen
importantes depredadores y carroñeros.
12. Algunos organismos bentónicos, como las estrellas de mar, las
ostras, las almejas, los pepinos de mar, los ofiuroideos y las
anémonas de mar, desempeñan un papel importante como
fuente de alimento para los peces y los seres humanos.