Crustaceans
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Crustaceans are arthropods in the subphylum Crustacea and include crabs, shrimp, lobsters, barnacles, copepods, krill, isopods, and amphipods. They have a jointed exoskeleton and specialized appendages for locomotion, feeding, breathing through gills, and sensing the environment. Crustaceans can be predators, scavengers, or filter feeders. They have separate sexes and males release sperm packets for females to store until fertilizing their eggs, which hatch externally.
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Crustacean powerpoint
Crustaceans are a large phylum of arthropods including crabs, shrimp, lobsters, barnacles, copepods and krill. They mostly live in water and have a body divided into two parts - a fused head and thorax called the cephalothorax, and an abdomen. They have many specialized jointed appendages including walking legs, swimming legs, and feeding appendages. Crustaceans have a variety of feeding methods from predation to filter feeding. They reproduce sexually with external fertilization and females carry eggs until hatching.
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Crustacean powerpoint
Crustaceans are a large phylum of arthropods including crabs, shrimp, lobsters, barnacles, copepods and krill. They mostly live in water and have a body divided into two parts - a fused head and thorax called the cephalothorax, and an abdomen. They have many specialized jointed appendages including walking legs, swimming legs, and feeding appendages. Crustaceans have a variety of feeding methods from predation to filter feeding. They reproduce sexually with external fertilization and females carry eggs until hatching.
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The document discusses the digestive system of fish. It covers the main components and processes of the fish digestive system including the mouth, esophagus, stomach, pancreas, liver, intestines and anus. It describes the different feeding mechanisms used by fish such as filter feeding, ram feeding, suction feeding, and others. It also discusses the enzymes involved in digesting carbohydrates, proteins and lipids. In summary:
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2. Important historical schemes for classifying fishes were proposed by scientists such as Berg in 1940, who grouped fishes based on characteristics like jaw structure, fin morphology, scale type and vertebral structure.
3. Major fish groups discussed in
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Stress can negatively impact the immune system of fish. Stress is caused by stressors like poor water quality, overcrowding, temperature changes, and handling. When fish experience stress, their bodies release hormones like epinephrine and cortisol. Epinephrine prepares the fish to fight or flee, increasing heart rate and blood flow. Cortisol also prepares the fish to cope but can suppress the immune system over time. Stress damages the protective mucus and scales of fish, making them more vulnerable to pathogens and disease outbreaks. Managing water quality, nutrition, stocking density, and handling can help prevent stress in aquaculture.
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This document provides information on deep sea fisheries of India, including:
1. It discusses the history of deep sea fishing in India dating back to the 1970s and laws/policies governing deep sea fishing.
2. It describes some key deep sea fishery resources of India including oceanic tuna, oceanic sharks, and deep sea shellfish. Several species are highlighted for each category.
3. Production details are given for oceanic tuna, where landings have been negligible but are being targeted through new programs, and for sharks, where landings in 2016 were around 52,840 tons.
Classification of fishes
Classification of Fishes can be summarized as follows:
1. Fishes are classified based on their anatomical features and placed in a systematic hierarchy ranging from superclass to species. Some key groups include chondrichthyes (cartilaginous fishes like sharks), osteichthyes (bony fishes), actinopterygii (ray-finned fishes) and sarcopterygii (lobe-finned fishes).
2. Important historical schemes for classifying fishes were proposed by scientists such as Berg in 1940, who grouped fishes based on characteristics like jaw structure, fin morphology, scale type and vertebral structure.
3. Major fish groups discussed in
Endocrine system of fishes ppt
Fishes, amphibians, reptiles, and birds have paired pharyngeal ultimobranchial glands that secrete the hypocalcemic hormone calcitonin. The corpuscles of Stannius, unique glandular islets found only in the kidneys of bony fishes, secrete a peptide called hypocalcin.
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Mollusks are a large phylum of invertebrate animals including snails, slugs, clams, oysters, octopuses and squid. They have soft bodies and some species have shells while others do not. Mollusks are divided into three main classes - bivalves like clams which have two shells, gastropods like snails which have one shell or no shell, and cephalopods like octopuses and squid which are the most complex and recently evolved mollusks.
Arthropods
The document provides information about various arthropod groups. It discusses the phylum Arthropoda and some of its subdivisions including crustaceans and insects. It describes key characteristics of crustacean classes like cirripedia (barnacles) and malacostraca (which includes decapods like crabs and shrimp). It also summarizes insect orders like lepidoptera (butterflies and moths), odonata (dragonflies and damselflies), hymenoptera (bees, wasps, ants), and orthoptera (grasshoppers, crickets and katydids). It notes important features that distinguish these groups and provides examples.
Eco2
The document discusses the major components of ecosystems and the flow of energy and matter within ecosystems. It describes ecosystems as being composed of biotic components like producers, consumers, and decomposers as well as abiotic components like soil, atmosphere, water and sunlight. Energy from the sun is captured by producers through photosynthesis and then passes through food webs as organisms consume each other or have their remains decomposed, recycling nutrients back into the system.
Mollusks
Mollusks are invertebrate animals that typically have a soft body and secrete a hard shell. They have a head with eyes, mouth and brain. Mollusks can be male, female or hermaphroditic. They reproduce either internally or externally. The three main types of mollusks are bivalves like clams, gastropods like snails, and cephalopods like squid and octopuses. Bivalves have two-part shells and use their muscular foot for burrowing. Gastropods have spiral shells and include sea slugs. Cephalopods are highly intelligent and can change their skin color and texture.
Subphylum Crustacea Notes
The document describes characteristics of crustaceans. It notes that crustaceans have two pairs of antennae and an exoskeleton made of chitin with some having a layer of calcium carbonate. It discusses the classes Copepoda, Brachyopoda, Cirripedia, and Malacostraca. Malacostraca have three orders: Amphipoda, Isopoda, and Decapoda. It provides details on hermit crabs, fiddler crabs, and shrimp anatomy and preparation for eating.
Daphnia
La pulga de agua (Daphnia) es un pequeño crustáceo transparente que vive en el plancton de agua dulce. Se reproduce de forma asexual mediante partenogénesis cuando las condiciones son favorables, pero de forma sexual cuando hay estrés, produciendo machos y formas resistentes. Su ciclo vital incluye tanto la reproducción asexual como la sexual, y se alimenta de bacterias y algas microscópicas.
Mollusks bivalves:gastro:cepha marine
The document describes three classes of mollusks: Gastropoda (snails and slugs), Bivalvia (clams, mussels, oysters), and Cephalopods (octopuses, squid, cuttlefish). All mollusks have a visceral mass containing organs and a mantle cavity with gills. Gastropods have a muscular foot and radula for scraping food. Bivalves have two shells called valves held together by adductor muscles. Cephalopods are predators with advanced brains, eyes, and tentacles used to capture prey.
Phylum mollusca
The phylum Mollusca includes several classes of soft-bodied animals that often have a calcium carbonate shell secreted by a mantle. The body consists of a head, foot, and visceral mass. Molluscs exhibit a range of habitats from terrestrial to marine. Notable classes include Gastropoda (snails and slugs), Bivalvia (clams and oysters), and Cephalopoda (octopuses, squid, and nautiluses), which have complex nervous systems. Molluscs play important ecological roles and some species are economically significant as food sources or decorations.
Molluscs
Bivalves and gastropods are types of molluscs, with bivalves having two shells and gastropods having one spiraled shell. Cephalopods are also molluscs but differ in having tentacles near their head and include squid and octopuses.
Crustaceans & molluscs
This document lists various types of crustaceans and molluscs including blue mussel, clam, cockle, crab, cuttlefish, great scallop, jack knife clam, lobster, octopus, oyster, prawn, snail, squid, and whelk.
Mollusks
The document discusses the three main classes of mollusks: gastropods which include slugs and snails, bivalves like clams that have two shells, and cephalopods such as squid and octopus. It provides details about their anatomy including that they have a foot, visceral mass containing organs, and mantle that secretes shells for most. It also describes how different types eat, their circulatory systems, and nervous systems. Facts noted are that most live in oceans, range in size from 1mm to 18m, and cephalopods have the most advanced nervous system of invertebrates.
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Subphylum Crustacea: Clase Branchiopoda Laboratorio
Subphylum Crustacea: Clase Branchiopoda Laboratorio
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The vertebrates
Vertebrates are chordates that have a backbone or spine replacing their notochord as they develop. They are divided into several classes: Agnatha (jawless fish), Chondrichthyes (cartilage fish like sharks), Osteichthyes (bony fish), Amphibia (amphibians), Reptilia (reptiles), Aves (birds), and Mammalia (mammals). Vertebrates are characterized by features like an internal skeleton, vertebral column, cranium, and organ systems like respiratory, circulatory, and digestive. The major groups of vertebrates first appeared between 550-150 million years ago.
Vertebrates Powerpoint
This document provides information about vertebrate animals, beginning with their taxonomic classification and then describing key characteristics of major vertebrate groups including fish, amphibians, reptiles, birds, and mammals. It outlines defining anatomical features for each group as well as examples of orders, classes, and important vocabulary terms.
Vertebratespowerpoint
This document provides information about vertebrate animals, beginning with their taxonomic classification and then describing key characteristics of major vertebrate groups including fish, amphibians, reptiles, birds, and mammals. It outlines defining anatomical features for each group as well as examples of orders, classes, and important vocabulary terms.
Chordate characteristics 2016
This document describes the characteristics of the phylum Chordata, which includes humans and other vertebrate animals. Chordata are defined by having a notochord or backbone during development. The phylum contains five subphyla: Hemichordata, Urochordata, Cephalochordata, and Vertebrata. Vertebrata are further divided into seven classes: Agnatha, Chondrichthyes, Osteichthyes, Amphibia, Reptilia, Aves, and Mammalia. The document provides details on characteristics and examples for each group.
Chapter 9 arthropods
Here are a few methods a scientist could use to determine the population density of barnacle species on the dock post:
1. Count the number of individual barnacles within a defined area on the post (e.g. within a 1 square foot quadrat) and extrapolate the total population based on the total surface area of the post.
2. Take photographs of defined areas on the post and count the barnacles visible in the photos back in the lab. Extrapolate totals as above.
3. Carefully scrape off all the barnacles from a defined area and count directly to determine density for that area. Extrapolate as above.
4. Use image analysis software to process high resolution photos of the post surface
Fish Unit
The document discusses key anatomical terms used to describe directionality in the body. It then summarizes the evolution of chordates, highlighting four defining characteristics and advantages conferred by these traits. Various hypotheses on vertebrate evolution are presented, along with an overview of major chordate subgroups and their defining features.
Chapter 9 arthropods
Here are a few methods a scientist could use to determine the population density of barnacle species on a dock post:
1. Count the number of individual barnacles within a defined area on the post (e.g. within a 1 square foot quadrat) and extrapolate the total number per post based on the surface area. This direct count method provides an estimate of density.
2. Weigh a sample of barnacles scraped from a defined area. Compare the wet or dry mass to samples of known densities to estimate individuals per unit area.
3. Take photographic images of sample areas and use image analysis software to automatically count and identify barnacles based on size, shape, color. This provides a repeatable quantitative measure
Invertebrate PPT-PAP.ppt
Invertebrates show increasing complexity from sponges to echinoderms. Sponges are multicellular but lack true tissues, while echinoderms have water vascular systems and five-part radial symmetry. Key invertebrate phyla include porifera, cnidaria, platyhelminthes, nematoda, mollusca, annelida, arthropoda, and echinodermata. Arthropods are the most diverse and include insects, arachnids, and crustaceans. Chordates that lack backbones, such as tunicates and lancelets, are also invertebrates.
Introduction to animals
1) Animals exhibit a variety of traits including being multicellular, eukaryotic, and ingestive heterotrophs that take in food and digest it internally.
2) They have various systems for support, movement, circulation, respiration, digestion, excretion, nervous coordination and reproduction.
3) Animals show different levels of organization from cells to tissues to organ systems, and a diversity of body plans, symmetries, embryonic development stages and reproductive strategies.
26_introduction_to_the_animal_kingdom.pptx
This document provides an introduction to the animal kingdom. It defines animals as multicellular, eukaryotic organisms that lack cell walls. It describes the key characteristics of animals including their heterotrophic nature and the major divisions of invertebrates and vertebrates. It also outlines the main functions of animals including feeding, respiration, circulation, excretion, response, movement and reproduction. It discusses body symmetry, segmentation, and trends in early animal evolution. Finally, it provides an overview of the major phyla that make up the animal kingdom.
Animal kingom 151214ss
This document provides an overview of the animal kingdom, describing key characteristics of major animal phyla. It discusses the distinguishing features of sponges, cnidarians, flatworms, roundworms, segmented worms, mollusks, echinoderms, arthropods and gives examples of organisms from each phylum. The text explains characteristics like radial symmetry, endoskeletons, exoskeletons, metamorphosis and defines classes within the phylum Arthropoda.
AP Biology Vertebrate Evolution
Here are the primary features that separate each new clade:
- Craniates: Have a head
- Vertebrates: Have a backbone
- Gnathostomes: Have jaws
- Tetrapods: Have limbs and feet
- Amniotes: Have an amniotic egg
- Mammals: Produce milk and have hair
- Primates: Large brains and forward-facing eyes
- Humans: Increased brain volume and shorter jaws
Meet the arthropoda
This document provides an overview of arthropods, which are segmented invertebrates with jointed appendages and an external skeleton. It describes their anatomy, including a chitinous exoskeleton, jointed limbs, segmented bodies, and open circulatory and nervous systems. Arthropods reproduce through external fertilization and development of planktonic larvae. The phylum includes two subphyla: chelicerates like sea spiders and horseshoe crabs, and crustaceans such as lobsters, crabs, shrimp, and barnacles. Arthropods are mostly benthic or epifaunal and found worldwide, representing the largest number of species on Earth.
The cephalopods
The Cephalopods are a class of mollusks that include octopuses, squid, cuttlefish, and nautiluses. They are exclusively marine animals with prominent heads, arms for feeding and locomotion, and most can expel ink. They have well-developed eyes, gills for respiration, and use jet propulsion by squeezing their bodies. They are highly adapted predators that capture prey with their arms and suckers and tear it apart with their beaks. Most reproduce through external fertilization and die after breeding.
7 - Molluscs.pptx
The document discusses the phylum Mollusca. It describes key characteristics of molluscs including their soft unsegmented bodies protected by a calcium carbonate shell secreted by the mantle. There are over 200,000 mollusc species found mainly in oceans. The three main classes are gastropods, bivalves, and cephalopods. Gastropods include snails and slugs. Bivalves include clams, mussels and oysters which have two shells. Cephalopods like octopuses, squid and cuttlefish are advanced predators. The document also discusses mollusc anatomy, physiology, behavior and life cycles.
Vertebrates
This document describes the key characteristics of the major groups of vertebrates including fish, amphibians, reptiles, birds, and mammals. It outlines traits such as having backbones, lungs, amniotic eggs, feathers, fur and mammary glands. The document also provides examples of types of fish (jawless, cartilaginous, bony), amphibians (frogs, salamanders), reptiles (snakes, lizards, crocodiles), birds (chickens, ducks) and mammals (rodents, primates, ungulates).
Class: General Characters, Mammals classification , Adaptation.
General characteristics, Classification, Aquatic adaptation, Arboreal mammals, Cursorial and Fossorial Adaptation in Mammals,
Vertebrates class
A vertebrate is an animal with a spinal cord surrounded by cartilage or bone. The word comes from vertebrae, the bones that make up the spine. Animals that are not vertebrates are called invertebrates. Vertebrates include birds, fish, amphibians, reptiles, and mammals
Earth science presentation for tech class
This document provides information about amphibians, reptiles, and mammals. It defines each group and some of their key characteristics. Amphibians are cold-blooded vertebrates that live both on land and water, undergoing metamorphosis from aquatic young to air-breathing adults. Reptiles are cold-blooded and lay shelled eggs, coming in four main groups. Mammals are warm-blooded and give live birth, nursing their young with milk from mammary glands. They range greatly in size and include rodents, bats, primates, hoofed animals, and carnivores.
Vertebrates .
Vertebrates are a subphylum of chordates with backbones. They are classified into groups including fish, amphibians, reptiles, birds, and mammals. Key characteristics include skulls, vertebrae enclosing the spinal cord, and paired limbs in many land-dwelling forms. Vertebrates display a wide diversity of adaptations for locomotion, nutrition, and reproduction in various environments.
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Class: General Characters, Mammals classification , Adaptation.
Class: General Characters, Mammals classification , Adaptation.
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Impacts of Temperature and Salinity on Marine Animals
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Crustaceans
- 1. Subphylum Crustacea Phylum Arthropoda Kingdom Animalia
- 2. Background • Crabs, • Shrimp, • Lobster, • barnacles, • Copepods (70% of all crustaceans are copepods), • Krill (largest biomass of any species on earth), • Isopods, • Amphipods
- 3. Anatomy Jointed appendages with specialized jobs: Locomotion: -Pereopods – walking legs -Pleopods – swimming legs Feeding: -Maxillipeds -Mandibles -Chela – pincers (claws)
- 4. Anatomy contintued Breathing – gills (usually under) Sensory – antennae Tail – telson and uropods Body segments: -cephalothorax (head & body cavity AKA the carapace) and -abdomen (muscular dorsal part of body)
- 7. Feeding • Most predators or scavengers • Some filter feeders (barnacles) • Some parasites on fish or whales (ex. isopods)
- 8. Reproduction • Separate sexes • Males release sperm packet using modified appendages • Females mate during molting, hold sperm packet till fertilization • Females carry fertilized eggs under body till hatching; fan them for oxygen
- 9. Life Cycle of the Crustacean
- 10. Statistics • Largest crab - Japanese Spider Crab (13 feet) • Heaviest crab - Alaskan King Crab (up to 24 pounds) • Heaviest Crustacean – American Lobster (up to 48 pounds)