Difference between shark and Teleost
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Sharks and teleost fish differ in several key anatomical features. Sharks have cartilaginous skeletons, 5-7 gill slits not covered by an operculum, heterocercal caudal fins, and extract urea as their main nitrogenous waste product. In contrast, teleosts have bony skeletons, 7-8 gills covered by an operculum, homocercal caudal fins, and extract ammonia. Reproduction also differs between the two classes, with sharks exhibiting various forms of internal fertilization and viviparity/oviparity while most teleosts practice external fertilization through egg-laying.
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Introduction:
Adaptation to environment is one of the basic characteristics of the living organisms. Living organisms are plastic and posses the inherent properties to respond to a particular environment.
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Stable gaseous and osmotic concentration in a specific region.
Temperature fluctuation is minimum for a particular region.
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Therefore, it should have a streamlined body with an organ or ability to float.
The animal should also have to overcome the problem of osmoregulation.
There are two types of animals living in the present day water, which have undergone aquatic adaptation.
According to their origin, they are primary and secondary aquatic animals.
Adaptations to water habitat are of two types:
Primary aquatic adaptations which includes primitive gill-breathing vertebrates (fishes); Those animals, whose ancestors and themselves are living in the water from the very beginning of their evolution, are called primary aquatic animals. In other words, primary aquatic animals never had a terrestrial ancestry. They exhibit perfect aquatic adaptations. All fishes are primary aquatic animals.
Secondary aquatic adaptations which are acquired as in reptiles, birds and mammals. Those animals whose ancestors were lung breathing land animals, migrated to the water for some reason and ultimately got adapted to live in aquatic habitat, are called secondary aquatic animals. Some of them live partially while others live totally in the water. All aquatic reptiles, aves and mammals are representatives of secondary aquatic animals. Amphibians are in a transitional form between primary and secondary aquatic life.
Sensory adaptations like, electroreception for electrolocation and electro communication, olfaction (vomeronasal system), balance (spatial orientation, movement perception), vision (cornea curvature, retinal topography), and hearing (acoustics, ear anatomy) under the underwater sound reception mechanisms in various aquatic amniotes are well developed.
activity 5 - Osteichthyes
The document discusses the key anatomical features of bony fish (Osteichthyes) and cartilaginous fish (Chondrichthyes). It describes that Osteichthyes have bones and cycloid or ctenoid scales, while Chondrichthyes have cartilage and placoid scales. It then explains the functions of various fins, the lateral line, scales, eyes, nostrils, mouth, gills, operculum, and other parts in fish anatomy.
Fishes boris veli lilly 10-8
The document summarizes bony fishes (Osteichthyes) and cartilaginous fishes (Chondrichthyes). It describes their key characteristics, examples of types of fish in each group like the dwarf pygmy goby and great white shark, and how they breathe, move, feed and reproduce. It also discusses humans' interactions with and consumption of different fish.
Unit 25 Vertebrates
All vertebrates share four key characteristics - a notochord, hollow nerve cord, pharyngeal slits, and tail - at some stage of development. While most lose these traits as adults, they define the phylum Chordata. Vertebrates evolved internal skeletons allowing them to grow larger and more complex, with jaws developing from gill arches, giving them predatory advantages. Major vertebrate groups include fish, amphibians, reptiles, birds and mammals.
Fish 15 1
Fish have several key characteristics that define them as chordates, including a notochord, dorsal hollow nerve cord, and gill slits. There are three main classes of fish: jawless fish like lampreys, cartilaginous fish such as skates, and boney fish including rainbow trout. Boney fish make up over 95% of fish species and have skeletons made of bone. Ectotherms are animals whose body temperature changes with the environment, while endotherms regulate an internal constant temperature.
Class Actinopterygii and Class Sarcopterygii
This document provides information on ray-finned fish (Actinopterygii) and lobe-finned fish (Sarcopterygii). It describes their general characteristics such as habitat, locomotion, nutrition, and reproduction. It also covers their classification and anatomical features. Ray-finned fish make up over 50% of known fish species and contain familiar bony fish. They have flexible fins supported by bones. Lobe-finned fish were more abundant in the past and include lungfish and coelacanths. They have fleshy lobed fins and some can live on land.
TORSION IN GASTROPODS- Anatomical event (Zoology)
Brief description of Torsion- an anatomical event seen in Gastropods of Phylum Mollusca.
(Zoology)
Introduction
Definition of torsion in gastropods
Importance of understanding torsion in gastropods
Overview of the impact of torsion on gastropod evolution and adaptation
Evolution of Torsion in Gastropods
Historical background of torsion in gastropods
Theories and hypotheses on the evolution of torsion
Fossil evidence of torsion in gastropods
Role of Torsion in Feeding
Impact of torsion on the development of radula
Torsion and the ability to access food sources
Specialized feeding behaviors enabled by torsion
Torsion and Locomotion
Influence of torsion on the development of the foot
Torsion's effect on gastropod movement and mobility
Adaptations in gastropod locomotion due to torsion
Torsion and Predator Avoidance
Torsion's link to shell morphology and defense mechanisms
Behavioral adaptations related to torsion in response to predators
Role of torsion in enhancing survival through predator avoidance
Conclusion
Recap of the significance of torsion in gastropod evolution
Implications of understanding torsion for studying other mollusks
Future research directions in studying the impact of torsion on gastropod adaptation
Presentación animales marinos ilustrada azul _20231122_090918_0000.pdf
Dolphins evolved from land mammals and still retain some characteristics of land animals today such as fingers on their fins, nursing their young, and the ability to breathe air. They have highly developed hearing and communication skills. A curious fact is that dolphins can sleep with half their brain at a time, keeping one eye open for threats while resting the other half. They form groups of up to hundreds and have excellent hearing and group behavior.
Reptiles
Reptiles were the first terrestrial vertebrates and dominated during the Mesozoic era. There are around 7,000 reptile species worldwide today, with the most successful group being squamates (snakes and lizards). Reptiles are characterized by scaly skin, laying amniotic eggs, and various anatomical adaptations for living on land such as efficient lungs and kidneys. The four surviving orders are squamates, crocodilians, turtles, and the tuatara; turtles are notable for their protective shells.
Aquatic mammals & their adaptation.fully aquatic mammal and amphibian aquatic...
this slide animation and videos work mainly in power point 2013 version.the slide contain aquatic mammals and their evolutions.mainly evolutions and their adaptive mechanisms are also listed
Fishes
This document summarizes key characteristics of chordates and classes of fish, including jawless and jawed fish. It describes:
1) The five characteristics of chordates and the classes of jawless fish (hagfish and lamprey), which have cartilaginous skeletons and sucker-like mouths.
2) The class Chondrichthyes (sharks and rays), which have cartilage skeletons, dermal placoid scales, and multiple rows of replacement teeth. Reproduction includes live birth and egg-laying.
3) The class Osteichthyes (bony fish), which have over 30,000 species with bony backbones, fins, and swim bladders.
16. Class Osteichthyes Notes
The document summarizes the key characteristics of the bony fish class Osteichthyes. Bony fish have a skeleton made of bone, scales, and an operculum covering their gills. They possess fins, swim bladders, and their mouths and jaws allow for better movement than sharks to aid feeding. Their internal anatomy includes two-chambered hearts, gills for gas exchange, lateral lines for sensing vibrations, and various sensory organs like eyes and ears. Bony fish exhibit diverse behaviors such as forming territories, schools, and undertaking migrations.
Parasites metazoan (cestode, nematode,acantho)
This document provides information on various phyla of parasites found in fish, including Platyhelminthes (cestodes and trematodes), Nematoda (nematodes), and Acanthocephala (thorny-headed worms). It describes their basic morphology, lifecycles, examples of types of parasites, and the pathology they can cause in different types of fish hosts. Common parasites discussed include tapeworms, flukes, roundworms, and spiny-headed worms.
Ocean life
The document provides information about life in the Mariana Trench, the deepest known part of the oceans. It details that the Mariana Trench is located near Japan and reaches depths of over 11,000 meters. Life in the trench has adapted to the extreme pressure and lack of light, relying on bioluminescence for illumination and falling organic matter for food. Organisms include anglerfish, sea pigs, giant sea spiders, and giant squid, which is prey for sperm whales.
Similar to Difference between shark and Teleost (20)
Presentación animales marinos ilustrada azul _20231122_090918_0000.pdf
Presentación animales marinos ilustrada azul _20231122_090918_0000.pdf
Aquatic mammals & their adaptation.fully aquatic mammal and amphibian aquatic...
Aquatic mammals & their adaptation.fully aquatic mammal and amphibian aquatic...
More from Degonto Islam
Bottom clean Aquaculture system and It’s Engineering Principle
Bottom clean Aquaculture method is considered an updated version of bio-floc.
The most important tasks here are scientifically removing the waste from the bottom of the reservoir and the rotation of oxygen and food supply to the fishes
In this type of culture system, as the amount of oxygen is higher, it is able to culture fishes 10- 20 times more.
fish population dynamics, Population structure
Estimation of fish population dynamics are often based on age structures. Understanding past
population structure is of interest to evolutionary biologists because it can reveal when migration
regimes changed in natural populations, thereby pointing to potential environmental factors such as
climate changes as driving evolutionary forces. Characterizing the structure of extent populations is also
key to conservation genetics as translocation or reintroduction decisions must preserve evolutionary
stable units. Finally, population structure has important biomedical consequences either when a number
of subpopulation groups is locally adapted to particular environmental conditions (and maladapted
when exposed to new environments) or represents a confounding factor in the study of the statistical
association between genetic variants and phenotyp
Separation Surplus yield model (MSY, Fmsy, MEY, Fmsy)
Economic variables are often included in the biological model that suggests the relationship between sustainable revenue, fishing cost and fishing effort.
For more than 50 years, it has been generally accepted that the fishing sector stood to gain from managing fisheries at the effort level producing maximum economic yield rather than maximum sustainable yield, which occurs at a higher effort level.
Surplus production models are also called as Holistic models. This model deals with total stock biomass along with fishing effort and yield. To operate this model, catch and effort data are needed as input data. These models could be computed with less input data unlike analytic models. This model does not take into account age and growth. Hence, it could be safely applied to tropical stocks, where calculation of age of tropical fish is more cumbersome.
Programme planning and evaluation in extension work
Programme is the total educational job being done in particular settings that forms the basis for extension plan. Programme planning is decision making process which actually analysis the existing condition and matter and evaluation the alternative approach to solve the crux with priorities of the human feeling and needs. Generally initial objectives are peoples participations at grass roots level.
Fishing gear In Bangladesh
Fishing Gear any form of equipment, implement, tool or mechanical device used to catch, collect or harvest fish. Fishermen in many parts of Bangladesh catch fish with their hands. In rural areas, in seasonal waters or beels, during winter, people can be usually seen fishing with different traditional gears while some even do so without any gear
Guidelines for the control of Aquaculture medicinal products(AMPs)
Aquaculture drugs and chemicals plays a pivotal role not only in fish health management but also pond construction, soil and water management, enhancement of natural aquatic productivity, feed formulation, manipulation of reproduction, growth promotion and processing. Government of Bangladesh organized an awareness program on control of AMP to create awareness among different stakeholders. Functioning of a control system for AMP is a prerequisite for quality assurance safe fishery products
Present status of Fish Hatchery in Bangladesh
In the past decades the rivers of Bangladesh were the mentor natural source of carp seed production. Due to the destruction of natural habitats and also increase demand the natural available of carp seed has largely declined and the aquaculture venture and gradually replaced by the hatchery produced fry since early 80’s when artificial fish breeding technique and low cost hatchery design have been successful adapted in Bangladesh.
Degonto file management
This world have numerous kinds and diversity .This kinds and diversity remain in whole world two two third is aquatic ,fresh water and marine water .This kinds and diversites knowledge and their total knowledge file management is very importance for fisheries science.
This freshwater and marine water has a huge number of vertebrate and invertebrate animals and plants. Thair identify and use is vary importance for fisheries and aquaculture .for that their proper file management is play a useful role in fisheries and aquaculture.
If we went to know the total plant and animals this is not possible to proper file management.
Culturable species and there predator knowledge and file management is vary importance for aquaculture .culturable species habitats and their food habit is very importance for successful aquaculture and also importance in breeding season and behavior and high growth rate fish data .There proper management and for fisheries student study documents is very important. So file management is very importance in fisheries science.
Natural fish seed collection
Transport of hatchlings, fry, and fingerlings is common in aquaculture. Proper techniques involve understanding fish physiology and mortality causes during transport. Seed can be collected from wild or hatcheries. Major carps are collected from flooded rivers during monsoon season. Seed from estuaries and coastal waters include milkfish, mullets, pearlspot, and seabass. Bundhs are seasonal flooded areas that stimulate breeding. Induced spawning techniques breed species that don't spawn in captivity using hormones. Transport uses open or closed oxygenated systems. Factors causing mortality are oxygen depletion, waste accumulation, temperature fluctuations, and stress. Anaesthetics and antibiotics are used to reduce stress and prevent disease.
Pelagic fish
The document lists various types of pelagic fish including their common and scientific names. It mentions oil sardines, mackerel, clupeoids, silversides, fusiliers, halfbeaks, sardines, anchovies, scads, horse mackerel, bombay duck, tuna, billfish, king mackerel, sharks, and large rays. The document provides names but no additional details about the fish.
Degonto, File management system in fisheries science
File management is an important part of fisheries management. It involves organizing files related to fisheries into directories and subdirectories on computers in an efficient way. This allows important fisheries data, which can amount to terabytes, to be easily stored, named, and retrieved. Files are typically organized in a hierarchical file system with drives, folders, and subfolders. Proper file naming conventions and restrictions on file names are followed. Files can be sorted, copied, deleted, and backed up. Keeping files secure involves locking them, using strong passwords, and creating backups in separate locations.
Histological characteristics of alimentary canals, Degonto islam
The document summarizes the histological characteristics of the alimentary canal in fish. It describes the layers and functions of the different parts of the alimentary canal, including the mouth, esophagus, stomach, intestines, liver, and pancreas. It also discusses the circulatory system in fish, describing the structure of the heart and blood components. The key points are that the alimentary canal is composed of four layers - mucosa, submucosa, muscularis externa, and serosa. It passes food from the mouth to the anus and includes digestive organs like the stomach and pancreas that aid in breaking down food. The circulatory system transports blood, gases, nutrients, hormones
Detection of Fish Farm Location Using Satellite Image
This document discusses using satellite imagery to detect fish farm locations. It describes what satellite imagery and remote sensing are, and provides a brief history of their use in fisheries research since 1960. The document outlines that multispectral images can distinguish water from vegetation, while panchromatic images have higher resolution but do not differentiate as well. It also explains that merging image types can help identify farm ponds. The document estimates that remote sensing methods can detect farm locations at a lower cost than traditional surveys. Finally, it notes some problems with satellite imagery like atmospheric influences and issues with availability.
Porpoise similar to dolphin Family phocoenidae
This document discusses porpoises, including their taxonomy, physical characteristics, behavior, habitat, threats, and conservation efforts. Porpoises are small toothed whales in the family Phocoenidae. There are 7 extant species of porpoise that inhabit coastal waters near polar regions. They have streamlined bodies adapted for swimming at high speeds. While similar to dolphins, porpoises tend to be smaller and have spade-shaped teeth. The document outlines various porpoise species, their distributions, adaptations, feeding habits, and differences from dolphins. It also addresses threats like hunting and environmental hazards and conservation agreements to protect endangered populations.
Feature amino acid and peptide
This document discusses amino acids and peptides. It defines amino acids as organic acids that contain both an amino group and a carboxyl group attached to the same carbon atom. Proteins are polymers of amino acids linked together by peptide bonds. There are over 300 amino acids but only 20 are common in mammalian proteins. Amino acids are classified in different ways, and some are essential while others are non-essential. Peptides are formed when the carboxyl group of one amino acid reacts with the amino group of another, linking them together. The peptide bond gives proteins their structure and is important biologically.
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Bottom clean Aquaculture system and It’s Engineering Principle
Bottom clean Aquaculture system and It’s Engineering Principle
Separation Surplus yield model (MSY, Fmsy, MEY, Fmsy)
Separation Surplus yield model (MSY, Fmsy, MEY, Fmsy)
Programme planning and evaluation in extension work
Programme planning and evaluation in extension work
Guidelines for the control of Aquaculture medicinal products(AMPs)
Guidelines for the control of Aquaculture medicinal products(AMPs)
Degonto, File management system in fisheries science
Degonto, File management system in fisheries science
Histological characteristics of alimentary canals, Degonto islam
Histological characteristics of alimentary canals, Degonto islam
Detection of Fish Farm Location Using Satellite Image
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Recently uploaded
快速办理(UAM毕业证书)马德里自治大学毕业证学位证一模一样
学校原件一模一样【微信：741003700 】《(UAM毕业证书)马德里自治大学毕业证学位证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
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11.1 Role of physical biological in deterioration of grains.pdf
Storagedeteriorationisanyformoflossinquantityandqualityofbio-materials.
Themajorcausesofdeteriorationinstorage
•Physical
•Biological
•Mechanical
•Chemical
Storageonlypreservesquality.Itneverimprovesquality.
Itisadvisabletostartstoragewithqualityfoodproduct.Productwithinitialpoorqualityquicklydepreciates
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...Scintica Instrumentation
Targeting Hsp90 and its pathogen Orthologs with Tethered Inhibitors as a Diagnostic and Therapeutic Strategy for cancer and infectious diseases with Dr. Timothy Haystead.Micronuclei test.M.sc.zoology.fisheries.
Current Ms word generated power point presentation covers major details about the micronuclei test. It's significance and assays to conduct it. It is used to detect the micronuclei formation inside the cells of nearly every multicellular organism. It's formation takes place during chromosomal sepration at metaphase.
The cost of acquiring information by natural selection
This is a short talk that I gave at the Banff International Research Station workshop on Modeling and Theory in Population Biology. The idea is to try to understand how the burden of natural selection relates to the amount of information that selection puts into the genome.
It's based on the first part of this research paper:
The cost of information acquisition by natural selection
Ryan Seamus McGee, Olivia Kosterlitz, Artem Kaznatcheev, Benjamin Kerr, Carl T. Bergstrom
bioRxiv 2022.07.02.498577; doi: https://doi.org/10.1101/2022.07.02.498577
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Simpletechnologiesfortimelydetectionofinsectsinthestoredproduceandtherebyplantimelycontrolmeasures
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Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
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Randomised Optimisation Algorithms in DAPHNE
Slides from talk:
Aleš Zamuda: Randomised Optimisation Algorithms in DAPHNE .
Austrian-Slovenian HPC Meeting 2024 – ASHPC24, Seeblickhotel Grundlsee in Austria, 10–13 June 2024
https://ashpc.eu/
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
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By harnessing the power of High Flux Vacuum Membrane Distillation, Travis Hills from MN envisions a future where clean and safe drinking water is accessible to all, regardless of geographical location or economic status.
8.Isolation of pure cultures and preservation of cultures.pdf
Isolation of pure culture, its various method.
Direct Seeded Rice - Climate Smart Agriculture
Direct Seeded Rice - Climate Smart AgricultureInternational Food Policy Research Institute- South Asia Office
PPT on Direct Seeded Rice presented at the three-day 'Training and Validation Workshop on Modules of Climate Smart Agriculture (CSA) Technologies in South Asia' workshop on April 22, 2024.
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11.1 Role of physical biological in deterioration of grains.pdf
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The cost of acquiring information by natural selection
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aziz sancar nobel prize winner: from mardin to nobel
aziz sancar nobel prize winner: from mardin to nobel
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Difference between shark and Teleost
- 1. Difference between Shark and Teleost Degonto Islam Department of fisheries and marine science, Noakhali Science and Technology University Degonto Fish World Vs
- 3. Difference between Shark and Teleost Feature Shark Teleost Skeleton Cartilaginous Bony Gill slits 5-7 Do not have Pectoral fins Not fused to the head Fused most of fish Class Chondrichthyes Osteichthyes Species Number Over 500 approximately 30,000 Habitat Sea water / Marine water Exception in few species such as Bull shark Freshwater and marine water Scales Placoid Cycloid, Ctenoid,Ganoid,
- 5. Feature Shark Teleost Nitrogenous extraction Urea Ammonia Food habitat Mostly Carnivorous Carnivorous, omnivorous , Harbivorous Teeth Embedded in the gums rather than directly affixed to the jaw, and are constantly replaced throughout life, modified placoid scales the enlarged premaxilla is the main tooth-bearing bone, and the maxilla, which is attached to the lower jaw, acts as a lever, pushing and pulling the premaxilla as the mouth is opened and closed. Other bones further back in the mouth serve to grind and swallow food.
- 6. Difference between Shark and Teleost Feature Shark Teleost Tail/ Codal fin Heterocercal caudal fin The caudal fin is homocercal, meaning the upper and lower lobes are about equal in size. In addition, the hypurals, bones that form a flattened plate at the posterior end of the vertebral column, are enlarged providing further support for the caudal fin.
- 7. Difference between Shark and Teleost Feature Shark Teleost Pelvic fin modification Male modified into claspers Do not modified Brooding Sharks may be oviparous, ovoviviparous and viviparous Aproximately 90% oviparous Example Carcharodon carcharias (great white shark) Ictalurus punctatus (channel catfish) Number of fins Most sharks have eight fins 7 or 8 Classification of animal based on major N-end products Ureotelic Ammoniotelic
- 8. Difference between Shark and Teleost Feature Shark Teleost Operculum No (shark gill slits are not covered, but lie in a row behind the head. A modified slit called a spiracle lies just behind the eye, which assists the shark with taking in water during respiration and plays a major role in bottom– dwelling sharks) yes
- 9. Difference between Shark and Teleost Feature Shark Teleost Thermoregulation poikilothermic Poikilothermic, TUNA are unique among teleost fishes in being thermoconserving. Vascular counter-current heat exchangers maintain body temperatures above ambient water temperature, thereby improving locomotor muscle efficiency, especially at burst speeds and when pursuing prey below the thermocline
- 10. Difference between Shark and Teleost Feature Shark Teleost Reproduction system Sexual reproduction with internal fertilization Reproduction is different depending on the species but generally happens one of three ways. In most cases, the female drops eggs in the water which are immediately fertilized by sperm from the male. Another way is for fertilization to occur within the females body before she drops them into the wate
- 11. Bull shark
- 12. Placoid scales
- 13. Placoid scales