Pest Animals Honor

Nature Study

Requirements

1. What are pest animals?

   Answer: Pest animals (or pests) are those that cause harm to humans — to health, food, crops, property, or the environment — whether by transmitting diseases, destroying crops and materials, or attacking people and other animals. E.g.: rats, cockroaches, mosquitoes, certain ticks, and fleas. — The concept of 'pest' is relative to humans: they are animals that cause us direct or indirect harm.

2. What is the difference between pest animals and venomous animals?

   Answer: Pest animals are those that cause harm to humans (diseases, damage to crops, property, etc.) — a broad concept. Venomous animals are those that produce venom and have a structure to inoculate it (fangs, stingers). Not every pest is venomous (the rat is a pest, but not venomous), and a venomous animal may or may not be considered a pest. — Pest = causes harm; venomous = inoculates venom — different concepts that sometimes overlap.

3. Know how some pest animals can be directly linked to certain types of outbreaks, epidemics, and pandemics.

   Answer: Many pest animals are vectors or reservoirs of diseases: by multiplying close to people, they spread the agents that cause outbreaks and epidemics. E.g.: the Aedes aegypti mosquito causes epidemics of dengue, zika, and chikungunya; rats and their fleas spread the plague (which was a pandemic); and bats and other animals can be reservoirs of viruses. Environmental imbalance and lack of hygiene favor this transmission. — When vector animals proliferate close to people, local diseases can turn into outbreaks, epidemics, and even pandemics.

4. Know at least 4 types of diseases transmitted by pest animals.

   Answer: Four examples: dengue (Aedes mosquito), leptospirosis (rat), bubonic plague (rat flea), and Chagas disease (kissing bug). Also malaria (Anopheles mosquito) and spotted fever (tick). — Knowing the diseases transmitted by pest animals shows why controlling them is a matter of public health.

5. How can animals harm crops and the lives of other animals?

   Answer: Pest animals harm crops by eating, gnawing, and destroying the fields and stored grain (rats, locusts, certain insects, and birds), and they harm other animals by transmitting diseases, preying on them excessively, or competing for food and space — especially when they become invasive species. — Pests cause great damage to crops and imbalances when they attack or replace other species.

6. Choose and present the following characteristics of 2 pest animals:
   • Habitat
   • Form of reproduction
   • Feeding
   • Diseases or harm caused to humans
   • Form of prevention

   Answer: Example 1 — Rat (brown rat): 1) Habitat: lives in sewers, dumps, houses, sheds, and crops. 2) Mode of reproduction: very rapid, with several litters per year and many young per litter. 3) Diet: omnivorous, eats grains, food scraps, and garbage. 4) Diseases or harm caused to humans: transmits leptospirosis, plague, and other diseases, contaminates food, and gnaws wires, furniture, and structures. 5) Means of prevention: maintain hygiene, seal cracks and holes, store food well, and dispose of garbage properly. Example 2 — Aedes aegypti mosquito: 1) Habitat: urban areas, near standing, clean water. 2) Mode of reproduction: the female lays eggs on the walls of containers with standing water, where the larvae develop. 3) Diet: the female sucks blood (necessary for the eggs) and the male feeds on nectar. 4) Diseases or harm caused to humans: transmits dengue, zika, and chikungunya. 5) Means of prevention: eliminate breeding sites (standing water), use screens, repellent, and clothing that protects the body. — Knowing the habitat, reproduction, diet, and harm of each pest is what makes it possible to fight it at its source.

7. Name at least 3 pest animals in each of the Classes below:
   • Mammals
   • Insects
   • Reptiles
   • Amphibians

   Answer: 1) Mammals: rat, vampire bat, and wild boar (when it becomes a pest). 2) Insects: mosquito (Aedes aegypti and Anopheles), cockroach, and kissing bug. 3) Reptiles: venomous snakes such as the jararaca (lancehead) and the rattlesnake and, near dwellings, the caiman. 4) Amphibians: the cane toad (whose secretion is toxic to domestic animals), the bullfrog (invasive in some places), and invasive species that unbalance the environment — bearing in mind that most amphibians are beneficial, since they control insects. — Classifying pest animals by group helps to recognize them; many only become 'pests' in specific situations.

8. Discover how some pest animals are important for the balance of the ecosystem.

   Answer: Even animals considered pests fulfill roles in the balance of the ecosystem: rats and insects serve as food for predators (owls, hawks, snakes, toads) and help the food chain; cockroaches and beetles decompose organic matter, recycling soil nutrients; mosquitoes and other insects serve as food for fish, birds, and bats, and some even pollinate plants; bats control insect populations, pollinate, and disperse seeds. Thus, their existence only becomes a problem when there is imbalance (excess, lack of predators, or proximity to humans), showing that every creature has a function in the nature created by God.

9. Learn 4 ways to protect yourself against pest animals found in homes or businesses.

   Answer: (1) Maintain cleanliness and hygiene, with no food scraps or exposed garbage; (2) seal cracks, drains, and holes through which rats and insects enter; (3) eliminate standing water and dampness (mosquito breeding sites); (4) use screens, proper pest control, and good food storage. In infestations, seek professional control. — Most pests move away when what attracts them is lacking (food, water, and shelter) — that is why hygiene and sealing are the best defenses.

10. Carry out at least 1 of the activities below:
    • Visit a zoo or research facility where you can observe harmful animals and present a report.
    • With the guidance of your leader, identify at least 10 harmful animals and present a list with: scientific name, common name, photo, and the location where it was found.
11. Discover 3 pest animals mentioned in the Bible.

    Answer: Three pest animals mentioned in the Bible: 1) Locusts/caterpillars — one of the plagues of Egypt and devastators of crops (Exodus 10:4-15; Joel 1:4). 2) Frogs/toads in multitudes — the second plague upon Egypt (Exodus 8:2-6). 3) Rats (mice) — associated with the plague that struck the Philistines (1 Samuel 6:4-5). Flies/mosquitoes (Exodus 8:16-24) and lice are also mentioned as plagues.