Posts Tagged ‘Galapagos Islands’

A Place in the Sun

Wednesday, February 3rd, 2010


The common green iguana is one species within one genus of a family of lizards found mostly in the New World. This green iguana and the other typical iguanas are tropical and semi-tropical and active during daylight hours (diurnal). Their eyes have round pupils and well developed lids. Their tongues are short, thick and only slightly notched, as contrasted to the long forked tongue of, for instance, the monitor lizards. It lays eggs, in common with most other iguanids (oviparous). Only a few give birth to living young (viviparous). They are frequently but not always brightly colored; they often have spines, frills or crests, and many can distend their throats. They can alter their color somewhat, some species more than others. Some may favor trees (arboreal) and others favor the land (terrestrial). Two are from the Galapagos Islands, and one of these is semi-marine, eats seaweed and would probably rather die than climb a tree.

For a beginning herpetologist or hobbyist pet keeper, the best iguana is the common green iguana – scientifically: Iguana iguana iguana. If you don’t go out of your way when you choose a pet in a pet shop, this is what you probably will get. Good. The only other iguanas that resemble it are Iguana iguana delicatissima which lacks the circular shields found below the eardrums of Iguana iguana iguana, and Iguana iguana rhinolopha which has a slight protuberance at the snout. So there you have it – genus Iguana, species iguana, and subspecies perhaps iguana or delicatissima or rhinolopha.

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Individual Dietary Preferences Vary

Wednesday, June 10th, 2009


The individual dietary preferences of iguanas vary. The favorite food of one specimen might be an item that is unfavored and unpalatable to another. Foods that are sometimes accepted by iganuas include : fresh spinach , Lima beans ,peas , cucumbers , broccoli and broccoli leaves , sweet green peppers , tomatoes , celery and celery leaves , red radishes , lettuce , apricots . peaches . lettuce , pears , chicken , turkey , tuna and flowers of the forsythis shrubs family and group.

Carcharhinus galapagensis (Grey Reef Whaler) – Vertical distribution patterns appear to be site specific and vary considerably between geographical areas/habitat types . In some regions juveniles are found in shallow water (less than 1 m) whereas in others they prefer deeper water ( around 40 m) (Wetherbee et al. … In the Galapagos Islands off the coast of Ecuador, it has been observed preying on sea lions and marine iguanas. The Galapagos shark displays threat gestures to warn competitors in the search for food. …

CSIRO PUBLISHING – Australian Journal of Zoology – A large population on Yadua Taba island has been proposed as a source for iguana translocations. This study aimed to determine the dietary and habitat requirements of the herbivorous B. vitiensis on Yadua Taba to identify essential … the diet of B. vitiensis using faecal analyses, while perch preferences were examined using field surveys. Faecal analyses identified 26 plant species in the diet of B. vitiensis, while field surveys recorded iguanas in 33 tree species. …

Amphibian ecology and evolution – Encyclopedia of Earth – This coat provides enough waterproofing to lower the frog’s rate of water loss close to that of a desert iguana! Several frog and salamander species take another approach to protecting themselves from drying out. … Although most adult amphibians feed largely on invertebrates, some species have unique dietary preferences. The Surinam toad (Pipa pipa) is an aquatic piscivore which has long fingers covered in tiny spines for grasping slippery fish. …

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