Insect-Eating Reptiles and Feeder Management
Insectivorous reptiles eat insects as their primary or sole food source. The most popular pet insectivores are leopard geckos, crested geckos (semi-insectivorous; supplement with commercial diet), African fat-tailed geckos, anoles, and various small lizard species. Insectivores need a different husbandry mindset than herbivores or carnivores — managing feeder insects, gut-loading, supplementation schedules, and dust-coating supplements are daily/weekly concerns.
Feeder selection determines the long-term health of an insectivore more than almost any other variable. Crickets and dubia roaches form the typical staple base. Black soldier fly larvae (BSFL) are excellent for calcium content. Mealworms work as variety but shouldn't dominate due to high chitin. Waxworms are calorie-dense treats only. Each feeder species has different protein, fat, calcium, and chitin content — feeding only one feeder type long-term causes nutritional gaps.
Gut-loading transforms feeders from cheap nutrition into excellent nutrition. Feed your insects high-calcium greens (collard, mulberry, dandelion) for 24-48 hours before offering them. The insect's digestive contents pass directly into your reptile. Gut-loaded insects deliver several times the nutrient density of insects fed only commercial cricket food.
Supplementation schedules vary by species and UVB exposure. The general framework: dust feeders with calcium-only powder for most feedings, alternate with calcium-plus-D3 powder if UVB is weak or absent, and add a multivitamin once or twice weekly. Over-supplementation causes hypervitaminosis (especially of vitamin A and D3) which is harder to correct than deficiency. Follow species-specific schedules in each profile.