Zoogeographers formulate theories to explain the distribution, based on information about geography, physiography, climate, and geologic history, as well as knowledge of the evolutionary history and relationships of the animals involved
Zoogeographers formulate theories to explain the distribution, based on information about geography, physiography, climate, and geologic history, as well as knowledge of the evolutionary history and relationships of the animals involved
Insular (isolated) fauna is the animal biodiversity of islands. This is a brief outline of the fauna of several islands, spread throughout the world, and divided into three categories: continental islands, oceanic islands, and ancient islands.
A zoogeographical region/realm is a sub-division of the Earth having a unique fauna, i.e. species that are found only in that area. Alfred Russel Wallace introduced six zoogeographical realms: Palearctic, Ethiopian, Oriental, Australian, Neotropical, and Nearctic regions. This is a brief overview of each.
This is a brief overview of the type of zoogeographic distributions of animals, such as cosmopolitan, discontinuous, endemic, isolated, and bipolar distributions.
Insular fauna is the fauna situated on an island. There are different types of islands and they are different from each other because of their age and there way of emergence. There are Continental Islands, Oceanic islands and ancient islands.
Palaerarctic region.the zoogeographical separation and distribution of animal...Anand P P
zoogeography mean that simply state that distribution of animals on the basics of geography.several zoogeography area present.palaearctic region have a special type of organisms distribution
There are few places left on the planet where the impact of people has not been felt. We have explored and left our footprint on nearly every corner of the globe. As our population and needs grow, we are leaving less and less room for wildlife.
Wildlife are under threat from many different kinds of human activities, from directly destroying habitat to spreading invasive species and disease. Most ecosystems are facing multiple threats. Each new threat puts additional stress on already weakened ecosystems and their wildlife.
Insular (isolated) fauna is the animal biodiversity of islands. This is a brief outline of the fauna of several islands, spread throughout the world, and divided into three categories: continental islands, oceanic islands, and ancient islands.
A zoogeographical region/realm is a sub-division of the Earth having a unique fauna, i.e. species that are found only in that area. Alfred Russel Wallace introduced six zoogeographical realms: Palearctic, Ethiopian, Oriental, Australian, Neotropical, and Nearctic regions. This is a brief overview of each.
This is a brief overview of the type of zoogeographic distributions of animals, such as cosmopolitan, discontinuous, endemic, isolated, and bipolar distributions.
Insular fauna is the fauna situated on an island. There are different types of islands and they are different from each other because of their age and there way of emergence. There are Continental Islands, Oceanic islands and ancient islands.
Palaerarctic region.the zoogeographical separation and distribution of animal...Anand P P
zoogeography mean that simply state that distribution of animals on the basics of geography.several zoogeography area present.palaearctic region have a special type of organisms distribution
There are few places left on the planet where the impact of people has not been felt. We have explored and left our footprint on nearly every corner of the globe. As our population and needs grow, we are leaving less and less room for wildlife.
Wildlife are under threat from many different kinds of human activities, from directly destroying habitat to spreading invasive species and disease. Most ecosystems are facing multiple threats. Each new threat puts additional stress on already weakened ecosystems and their wildlife.
Ethoipian Region
Distribution of animals
Common Names
Scientific Names
Habitat
Feeding Habits
General Characteristics
Represented Images
Geographical region
Biomes and EcosystemsInfographicBiomes are global geographicalChantellPantoja184
Biomes and Ecosystems
Infographic
Biomes are global geographical areas that share similar climatic conditions.
Biomes contain ecosystems, which are comprised of the living and nonliving components that occupy an environment.
Biomes
Tropical Rainforest Biome
Ecosystems:
Amazon Rainforest, the Philippines Rainforest, Asian Rainforest, and Central American Rainforest
Temperate Grasslands Biome
Ecosystems:
Plains and Prairies of Central-North America and the Plains of Africa
Boreal Forest Biome
Ecosystems:
Canadian Taiga, Russian Taiga, and Alaskan Boreal Forest
Desert Biome
Ecosystems:
Sonoran Desert, Saharan Desert, and Chihuahuan Desert
Mediterranean Woodlands Biome
Ecosystems:
The Mediterranean, South-Central and Southwestern Australia, the Fynbos of Southern Africa, the Chilean Matorral, and the Mediterranean Ecoregions of California
Temperate Rainforest Biome
Ecosystems:
Pacific Northwest Temperate Rainforest, Alaskan Temperate Rainforest, and Oregon Temperate Rainforest
Tropical Grasslands Biome
Ecosystems:
African Savannas, Australian Grasslands, and Southeastern Indian Grasslands
Tundra Biome
Ecosystems:
Arctic Tundra and Northern Scandinavian Tundra
Aquatic Biome
Ecosystems:
Coral Reef, Atlantic Ocean, and Everglades
...
This ppt discusses the different aspects of regional classification of zoogeographic regions. It puts emphasis on the where and why, climate and all the aspects of discoverability.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
A brief information about the SCOP protein database used in bioinformatics.
The Structural Classification of Proteins (SCOP) database is a comprehensive and authoritative resource for the structural and evolutionary relationships of proteins. It provides a detailed and curated classification of protein structures, grouping them into families, superfamilies, and folds based on their structural and sequence similarities.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
4. Palaearctic region
Extant /Area/Geographical range :
Largest zoogeographical region
It includes
Whole Europe
Northern part of Africa
Northern China
U.S.S.R(russia )
Japan
Iran
Afghanistan
Baluchistan (western province of punjab)
5. Palaearctic region
Boundaries :
• North ,west an east side covered by sea
• South side has oriental region
• Palaearctic region separated from
• Ethiopian region by Sahara desert
• Paleaerctic region is separated from
• oriental region by
• Himalayan mountains
6. Palaearctic region
Physical features :
This region include wet forest land and dry steppe
land
Contain a large number of coniferous forest
Wide range of temperature
Fluctuation in rainfall
Diversity of surface features
Climate :
More or less temperate climate
7. Palaearctic region
Zoological characters
Mammals :
28 families of land mammals
Does not have spectacular mammals
Two families are unique to this region spalacidae and selevinidae both have one genus .
Spalacidae have genus spalax (brownish rat with no tail ) selevinidae has slevinia genus .
Other mammals include
41. Palaearctic region
Affinities :
The vertebrate fauna are not very rich
Out of mammals rabbit, dog,families are world wide
distributed and shrew,cat,squirrel families are shared with
other regions except Australia
Bears ,deers,shares with neactic and neotropical and
oriental region
Camel family is the only family which show discontinuous
distribution
Hedghogs, porcupines,hy eanas, shared with ethiopian and
oriental region.