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May 05, 2006

Update 18: Animal Relationships for Survival

We have seen tons of cool animals in the Peruvian rainforest. The great wealth of sun, water, nutrients and fresh air has made the Amazon rainforest alive with more life than any other place on earth. But life is not easy in the jungle; it is a world of endless life-or-death competition for survival. Trees and plants compete for sunlight and soil, while monkeys and macaws compete for the trees' fruits. The constant pressures of survival have made life forms develop unique natural advantages or specialized adaptations.

It seems as though every living organism in the jungle is highly adapted and most species are interdependent (known as mutualism). This means that they create a relationship where they help each other survive. For example, fire ants protect the Cecropia tree from vines and predators, and in return receive a perfect nest site. During the flood, many trees rely on certain fish to eat their fruit and at the same time, the fish disperse the plant's seeds for the coming dry season.

Several fish species have developed pectoral fins that they can use to walk across the forest floor when the floodwaters return to the river channel. The flexible river dolphins use sonar to locate their prey. Fish and many insects use their sense of smell to find food sources. Birds use keen senses of sight and hearing. Some animals, like monkeys, are arboreal (living in the trees); they use natural highways over 100 feet above ground. Arboreal animals have developed great balance, strong hands, feet or claws, and some use a prehensile tail as another way to hold on.

Pacaya Samaria National Reserve is a very bio-diverse region- meaning many different species of living things live there. Thanks to the help of our guides, Ruben and Warren, we've seen and recorded over 150 species of mammals, reptiles, birds and insects in the Pacaya Samaria. Keep in mind the most common defensive tactic, used by most animals in the rainforest, is simply to hide- so we were probably seen by many more creatures than listed here.

Patrick

Arachnids

Wandering Spider
Black Tarantula
Wolf Spider
Golden-Webbed Orb Spider

Fishes

Red-Bellied Piranha
Black Piranha
White Piranha
Pacu
Armored Catfish
Boquichico
Sabalo
Parlometa
Carachama
Eel

 

Insects- too many to name them all, here are some of the interesting insects

Leaf Cutter Ants
Bullet Ant- nailed Warren
Morpho Butterfly
Argent Sulfer Butterfly
Stick Bug
Tortoise Beetle
Fire Ants- stung Dave

Mammals

White-Fronted Capuchin
Brown-Fronted Capuchin
Common Woolly Monkey
Squirrel Monkey
Southern Tamandua
Pink River Dolphin
Gray River Dolphin
Giant River Otter
Howler Monkey
Dusky Titi Monkey
South American Coati
Tayra
Three-Toed Sloth
Paca
Black-Monked Saki Monkey
Armadillo
Tapir
Collared Peccary
White-Lipped Peccary
Black Squirrel
Owl or Night Monkey
Saddleback Tamarind
Insect Bat
Fruit Bat
Long-Nosed Bat

Reptiles and Amphibians

Common Water Snake
Green Caiman Lizard
Clown Tree Frog
Black Caiman
Spectacled Caiman
Side-Necked Turtle
Golden Tegu Lizard
Forest Whiptail Lizard
King Toad
Smoky Jungle Frog
Giant Gladiator Tree Frog
Polka-Dotted Tree Frog

Crustaceans

River Crab
Spotted Fresh Water Sting Ray
Churo Snail

Birds

Great Egret
Snowy Egret
Horned Screamer
Macaws
Red-Bellied Macaw
Scarlet Macaw
Red-and-Green Macaw
Blue-and-Yellow Macaw
Chesnut-Fronted Macaw
Striated Heron
Capped Heron
Rufescent-Tiger Heron
White-Necked Heron
Ringed Kingfisher
Green-and-Rufous Kingfisher
Green Kingfisher
Amazon Kingfisher
Hoatzin
Greater Ani
Smooth-Billed Ani
Great Black Hawk
Black Colored Hawk
Road-Side Hawk
Limpkin
White-Winged Swallow
Southern-Rough-Winged Swallow
Sunbittern
Yellow-Headed Caracara
Black Caracara
Red-Throated Caracara
Black Vulture
Greater Yellow-Headed Vulture
Turkey Vulture
Cormorant
Anhinga
Toucans
White-Throated Toucan
Yellow-Reached Toucan
Ivory-Billed Toucan
Wattled Jacana
Yellow-Billed Tern
Large-Billed Tern
Muscovy Duck
Plumbeous Kite
Gray-Headed Kite
Ruddy Pigeon
Laughing Falcon
Cobalt-Winged Parakeet
Dusky-Headed Parakeet
Pui Parakeet
Canary-Winged Parakeet
Lineated Woodpecker
Crinsom-Crested Woodpecker
Yellow-Tufted Woodpecker
Yellow-Rumped Woodpecker
Speckled Chacalaca
Plum-Throated Cotinga
Chestnut-Eared Aracary
White-Cheeked Jacamar
Tropical Kingbird
Red-Capped Cardinal
Lesser Kiskadee
Greater Kiskadee
Forked-Tail FlyCatcher
Masked-Crinsom Tanager
Yellow-Bellied Jacnis
Blue-Black Grassquit

Sorry

Poll Not Currently Available...



The Great Black Hawk scans the river from its perch in a tree for crabs and fish along the banks.

A Green Caiman Lizard suns itself on a tree over the river. These lizards are able to dive in the river. They eat insects, fruits and turtle eggs.


A carachama fish sucks on Dave's finger with great strength. These fish can walk, using their pectoral fins, if they get stuck in the forest when the river level drops.

A Giant Gladiator Tree Frog hangs out on the wall at one of our ranger stations. Look at those sticky fingertip pads!


This deadly Wandering Spider came very close to ending our trip. It was in Patrick's pants for ten minutes before he noticed it and knocked it out. Somehow Patrick escaped without a serious bite!


A couple of Needlenose Gar fish are doing us a favor as they search for mosquito larvae. They also feed on smaller fish and do so by hunting in schools.



An Amazonas Parrot grips a high tree branch while squawking with its flock. Parrots are very abundant in the rainforest, but humans have hunted them for the pet industry and their colorful feathers.

 
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