The effect of diet on growth and development of Puerto Rican Crested Toad (Peltophryne lemur) tadpoles

The Puerto Rican Crested Toad (Peltophryne lemur), an endemic toad of Puerto Rico, was the first amphibian to be considered suitable for the Species Survival Plan (SSP). Captive propagation for release of this species began in 1983, and the Toronto Zoo has reintroduced over 15,000 animals to their native habitat since 1985. Although these animals have been successfully reared in...

Pyramiding is not caused by excess calcium and/or phosphorus in young Red-eared sliders, Trachemys scripta elegans

Pyramiding, is a condition in which the scutes of the carapace of turtles become deformed and elevated, taking on a pyramid shape. Pyramiding is believed to be a nutritional problem, however its exact cause is unknown. Given that the turtle carapace is composed largely of bone, it was hypothesized that it may be caused by an imbalance in dietary calcium...

Evolution of diets for Herbivorous and Omnivorous Reptiles at the Philadelphia Zoo: From Mystery Toward Science

At the Philadelphia Zoo the diets for herbivorous and omnivorous reptiles evolved over a period of years. Prior to 1992. the diets had been formulated solely by the former curator. Analysis of the general salad fed to smaller species of herbivorous and omnivorous reptiles (Animal Nutritionist – N-2) indicated unbalanced levels of fat-soluble vitamins. In addition. one of the salad’s...

Nutrition as a Major Facet of Reptile Conservation

The importance of nutrition has not received much recognition in conservation biology. However, captive breeding is only possible if nutritional requirements are met, and effective habitat management requires an evaluation of nutritional resources. Three examples involving reptile conservation are presented. The formulation and testing of experimental meal-type diets proved essential for the large scale rearing of green iguanas (Iguana iguana)...

Effect of Vitamin D3/ Ascorbic Acid Supplementation on Growth and Tibia Characteristics of Green Water Dragons (Physignathus cocincinus, Cuvier 1829)

A preliminary experiment was conducted to investigate the interactive effect of one level of a combined dose of vitamin D3/ascorbic acid (C) supplementation on growth performance and bone development in green water dragons (Physignathus cocincinus, Cuvier 1829) .Ten forty- seven day old female green water dragons obtained from one clutch of eggs were selected for this study. From birth to...

Feeding captive piscivorous animals: nutritional aspects of fish as food.

Piscivory is a term which specifically refers to the consumption of fish, but for the purposes of this document also encompasses a variety of organisms including marine invertebrates. Fish and marine invertebrates are prevalent constituents in the diets of a diversity of captive animals. Appropriate selection, purchase, storage, and thawing of these products is critical to the successful husbandry and...