What Do Crickets Like to Eat?
If you’ve ever wondered what do crickets like to eat, you’re not alone. Crickets are ubiquitous insects that thrive in gardens, fields, and even inside homes as feeder insects for reptiles and amphibians. Understanding their diet is essential whether you’re managing a backyard ecosystem, raising crickets for pet food, or simply curious about these chirpy critters. This guide explores the natural feeding habits of crickets, offers practical steps for feeding them in captivity, explains the science behind their nutritional needs, and answers common questions to help you keep your crickets healthy and active.
Introduction
Crickets belong to the order Orthoptera and are omnivorous scavengers with a surprisingly flexible palate. When kept as feeder insects or as pets, providing a balanced diet ensures they grow quickly, reproduce reliably, and remain nutritious for the animals that eat them. Even so, in the wild, they consume a mixture of plant material, fungi, and occasional animal matter, adapting their diet to what’s available in their habitat. The following sections break down everything you need to know about cricket nutrition, from foraging behavior to formulated diets Simple, but easy to overlook..
Easier said than done, but still worth knowing.
What Crickets Eat in the Wild
Plant-Based Foods
- Leaves and Grasses: Crickets chew on tender leaves, grass blades, and herbaceous plants. They prefer young, moisture‑rich foliage because it’s easier to digest.
- Seeds and Pollen: Small seeds, especially those from weeds and wildflowers, provide proteins and lipids. Pollen grains are a supplemental source of amino acids.
- Fruit and Vegetable Matter: Overripe fruits, fallen berries, and decaying vegetable scraps attract crickets seeking sugars and vitamins.
Fungi and Decaying Organic Material
- Mold and Mildew: Crickets will graze on fungal growths on damp wood or leaf litter, gaining extra nitrogen.
- Detritus: Decomposing plant matter offers a steady supply of carbohydrates and micronutrients.
Animal Matter (Occasional Protein Boost)
- Dead Insects: Scavenging on the carcasses of other insects supplies essential proteins and fats.
- Aphids and Small Soft‑Bodied Prey: Some species will actively hunt tiny arthropods when plant food is scarce.
- Eggs: Cricket eggs themselves can be a source of nutrition for cannibalistic individuals, especially in overcrowded conditions.
Italic note: While crickets are omnivorous, their diet leans heavily toward plant material; animal matter is typically consumed only when other food sources are limited Simple, but easy to overlook. Worth knowing..
Feeding Pet Crickets: Step‑by‑Step Guide
If you raise crickets for reptiles, amphibians, or as a hobby, follow these steps to provide a nutritionally complete diet.
1. Choose a Base Diet
- Commercial Cricket Feed: Pellets or granules formulated for feeder insects contain balanced protein (≈18‑22 %), fat, vitamins, and minerals.
- DIY Mix: Combine equal parts of ground oats, wheat bran, and alfalfa meal for a carbohydrate‑rich foundation. Add a protein source such as dried fish meal or soybean powder (≈10 % of the mix).
2. Supplement with Fresh Produce
Offer small portions of fresh fruits and vegetables 2‑3 times per week. Suitable options include:
- Leafy greens: romaine lettuce, spinach, kale (remove tough stems).
- Vegetables: carrots (shredded), zucchini, sweet potato (cooked and mashed).
- Fruits: apple slices, banana, melon (avoid citrus due to acidity).
Bold tip: Remove any uneaten fresh food after 24 hours to prevent mold growth.
3. Provide a Calcium Source
Calcium is vital for proper exoskeleton development, especially if crickets will be gut‑loaded for reptiles Simple, but easy to overlook..
- Calcium powder: Dust the dry feed lightly with a reptile‑grade calcium supplement (no phosphorus) twice a week.
- Natural options: Crushed eggshells or cuttlebone pieces can be placed in the enclosure.
4. Ensure Constant Hydration
Crickets need water but can drown in open dishes. Use one of these methods:
- Water gel crystals: Commercial insect water gels provide moisture without drowning risk.
- Moistened sponge: A small piece of clean sponge soaked in water, replaced daily.
- Fresh produce: High‑water‑content foods like cucumber or lettuce contribute to hydration.
5. Maintain Cleanliness
- Remove frass (cricket droppings) and old food weekly.
- Replace substrate (e.g., egg crates, paper towels) regularly to reduce fungal buildup.
- Keep the enclosure at 25‑30 °C (77‑86 °F) with 50‑70 % relative humidity for optimal feeding activity.
6. Observe and Adjust
Monitor cricket behavior: active foraging, regular molting, and steady growth indicate a good diet. If you notice lethargy, reduced chirping, or high mortality, increase protein or calcium levels and check for mold contamination.
Scientific Explanation of Cricket Nutrition
Macronutrient Requirements
- Protein (10‑20 % of dry weight): Supports muscle development, enzyme production, and egg formation. Essential amino acids such as lysine and methionine are often limiting in plant‑only diets, making supplemental protein important.
- Carbohydrates (50‑70 %): Primary energy source for locomotion and chirping. Simple sugars from fruits and complex polysaccharides from grains fuel metabolic processes.
- Lipids (5‑10 %): Provide concentrated energy and are precursors for hormones and pheromones. Essential fatty acids like linoleic acid contribute to membrane integrity.
Micronutrients and Vitamins
- Calcium and Phosphorus Ratio: Ideal Ca:P ratio for crickets is approximately 2:1 to support exoskeleton sclerotization. Excess phosphorus can inhibit calcium absorption, leading to soft shells.
- Vitamin A (β‑carotene): Derived from dark leafy greens and orange vegetables; crucial for vision and immune function.
- B‑Complex Vitamins: Found in whole grains and yeast; assist in energy metabolism and nerve function.
- Vitamin C: Though crickets can synthesize some ascorbic acid, supplemental sources from fruit improve stress resistance.
Gut Loading for Predators
When crickets are used as feeder insects, their nutritional content
