a hand picking up a brown slug from damaged green leaves in a garden, showing the slug's impact on the plants

39aph39 arion between brown cabbage caterpillar chocolate closeup control crawling creep crop crops damage damaged disease diseases ecology europe farmer feeding from garden gardening gastropod gastropoda green grow hand highlighting holes impact insect interaction invasion invasive invertebrate land leaf leaves lettuce lusitanicus mollusk pest pests picking plants plot pumpkin red rotten s show showing signs slug slugs snail snailplage snails soil spanish species