2. Australian Region
New Zealand
and Pacific
Islands not
included
Include Australia, Tasmania, New Guinea, a few
smaller islands of Malay Archipelago
3.
4. Australian Region: Climate
Partly Tropical and
Partly South-Temperate
Northern part (North
Australia and New
Guinea)…Lies in tropics
with high summer
temperature sand mainly
Rain forest (called Scrub
locally in Queensland).
Interior part…….mostly
hot but dry
Southern
part………Mainly
Temperate
5. Australian Region: Climate
New Guinea:
Tropical; mostly
covered with rain
forest
Areas of grassland
and series of
altitudinal
vegetations on the
mts.
South coast: areas
of open eucalyptus
woods
6. Australian Region: Climate
Southern part…
Mainly Temperate
Eastern and
South-eastern part
well watered with
open eucalyptus
woods and some
wetter, denser
forest on the
mountains.
7. Australian Region: Climate
Southwestern
…moderately wet
but cut off by
deserts from the
east. There are
some fine forests
of big trees in the
southwest.
Tasmania.. ..Cool
Temperate, and is
partly wet and
forested.
8.
9. Australian Region: Mammals
Most striking characteristics……its Paucity…..but what
it lacks in variety and no. of families, it make up in the
uniqueness of many.
Apart from Bats, only 9 families of mammals…8 of
these are unique.
Recent Introductions by Man from
Palearctic………..Rabbits, Foxes, Rats, Mice.
Other introductions…..
dates back to prehistoric times…..
Dingo Dog and Pigs.
Dingo Dog
10. Australian: Mammals
Nine families
Only one placental mammal fam.
Six Marsupials fam.
Two Monotremes fam.
11. Australian: Placental Mammals
Only one placental mammal, the murid mouse fam.
Wide range in old world but australian murids are of
distinct genera
Hydromyinae-water rats (False water rats-lack of
webbing on the feet), an exclusive subfam.
Smoky mouse
Water Rat (Xeromysmyoides)
Plains mouse
12. Australian: Marsupial Mammals
Dominant mammal fauna- Marsupials
Six excl. fam.- none of which occur in New World
(where other living marsupials lives)
In presence of a few placental (none of them
carnivores)- marsupials become diverse and have
taken to ways of life which in other parts of the world
are followed by placentals.
There is a striking parallelism in superficial structures
between some Australian mammals and their
counterparts in other regions.
14. Resemblance
Paddle -shaped feet and strongly
clawed fingers
In all superficial aspects
In
all superficial aspects
In all superficial aspects
In all superficial aspects
In all superficial aspects
Similar predatory life
Fam. Notoryctidae
Extinct
Opossums
Squirrel
15. Placental Mammals Australian Mammals
(Marsupials)
Resemblance
Rabbits and insectivores Fam. Peramelidae
(Bandicoots, Bilbys)
In all superficial aspects
Large Rodents Phascolomidae,
Wombats
(Vombatus
ursinus)
In all superficial aspects
Ungulates Kangaroos and Wallabies Their herbivorous diet
and speed of travel in
open country
16. Parallel radiation of Marsupials
Not perfect
No masupials bats, seals, or whales. Placental
representatives of these orders occupy the air and seas
of Australia
Australian Fur Seal Australian Fruit Bat/ Flying Fox
17. Australian-Monotreme Mammals
Relationship with marsupials and placental v remote.
May have had a separate origin from reptiles after
these had acquired hairs but had not yet lost their egg-laying
habits.
Two Australian fam. Only living Monotremes (Excl.)
Duckbilled Platypuses
Echidnae or spiny- ant eaters
Owe their survival to:
their specialized ways of life
the absence of placental carnivores
18. Australian-Monotreme Mammals
Echidnas/Spiny ant eater Duckbilled platypus
Active ant eater
Lay small leathery eggs
Mother incubate eggs in a
small pouch
The young are fed with milk
which seeps on to the fur
from special pores on the
underside of the mother
Semiaquatic
Lay small leathery eggs
Mother incubate eggs by
curling around them
The young are fed with milk
which seeps on to the fur
from special pores on the
underside of the mother
19. Australian Mammals-conclusion
Only a few monotremes (Excl. subclass)
Many marsupials (6 excl. fam.)
Diverse rodents of fam. Muridae (O.W.)
Fruit bats (warm O.W.)
6 fam. of insectivorous bats (all occurring elsewhere)
20.
21. Australian- Birds
Does not equal mammals in peculiarity as vast
majority with a wide range
Trogons, Kingfisher, Hawks and Cuckoos together with
pigeons and parrots (both of which reach their
greatest diversity there).
Trogons Kingfisher
Hawk Cuckoos
22. Australian- Birds
Many Australian Warblers (Malurinae)
Parrots-highly diverse with 3 excl. subfam.
Cockatoos
Lories
Pygmy parrots
Cockatoos
Lories
Pygmy Parrot
Warblers
23. Australian- Birds
Four bird fam. Shared
with Oriental Region
Frogmouth
Wood Swallow
Flower peckers
Megapodes
Frogmouth
Wood swallow
Megapodes
Flower peckers
24. Australian- Birds
Some birds, which are abundant in O.R are not seen in
Australian region which include:
Pheasants
Finches
Barbets
Woodpeckers
25. Australian- Birds Ten unique fam.
Of which, two flightless
Emus
Cassowaries
Honey suckers
Lyrebirds
Bower birds
Legendary bird of
paradise /bird of sun
Cassowaries
Bower
bird Male
Honey Sucker
Bird of Paradise
Bower bird Female Lyre bird
26. Australian Birds- Conclusion
Representatives of 58 fam on freshwater and land
Of these, 48 fam more or less widely distributed, over
the world, or the tropics, or all or much of the Old
World.
Proportion of Australian birds in exclusive fam. Is
larger than in any other continental faunal region
except the Neotropical
27.
28. Australian -Reptiles
Moderately varied with two excl. fam.
Constricting pythons and biting tiger snakes abundant
Constricting
Python
Tiger snake
29. Australian -Reptiles
Geckos, skinks, agamid lizards and varanid Komodo
Dragon- Varanus (warm O.W.),the largest of all lizards
present.
Pygopodids excl.
A Dibamus (O) in New guinea
Geckos
Skinks
Agamid Lizard
Pygopodids Lizard
Komodo Dragon
Dibamus
30. Australian -Reptiles
Crocodiles in tropical parts of the region
Three fam. of turtles, of which one is uinque-(Carettochelys,
excl. fam.) , one of which occurs in Oriental Region- a
trionychidae (soft shell turtle) , and one in South America-
Chelyid turtles (Side neck or Snake neck turtles)
Turtles shared with Neotropical region belong to chelyid fam. of
side-necks. They have strikingly long necks and are aquatic.
Carettochelys, pig-nosed
turtle
Soft Shell turtle
Snake neck turtle
31.
32. Australian -Amphibians
Few, Australia being the only region where common
toads are absent.
A few common frogs, hylid tree frogs (also found in
New world and Palearctic but absent from Oritental
region), leptodactylids (S.A. etc.), a few ranids (wide)
and brevicipitids (warm world, subfam. nearly excl.)
No tailed amphibians
33.
34. Australian -Fishes
Freshwater fish fauna equally poor
Third lung fish, Neoceratodus found in the rivers of
Queensland. It differ from other two lung fishes in the
more obvious development of its lobed fins.
An Osteoglossid (O etc.)
Peripheral fishes
35.
36. Overview
Poverty of freshwater fish, amphibian, and reptiles
Uniqueness of mammals and birds
A few frogs, turtles and marsupials resembles South
America
Terrestrial reptiles, many birds and placental
mammals show close affinities with Oreintal Region.
Little in common with Ethiopian though both have
lung fishes and side necks they don’t share the same
fam. Of either of these groups.