WebAppearance. The earthworm has a long pink body which is formed from ring-like segments known as annuli. Each segment is covered by small bristles known as setae which they can use to move and burrow. On the … WebCopulation. Earthworms are hermaphrodites, and reproduction mostly occurs through cross-fertilization by copulation. Copulation mostly occurs during the rainy season, early in the morning at dawn. The earthworms lie in contact with each other in the opposite direction, such that, the male genital apertures of one earthworm is near to the ...

(PDF) Collection and rearing of earthworms

WebEarthworms have both male and female reproductive organs so any two adult earthworms can mate, which takes place on or just below the soil surface at night. Mated … WebJul 21, 2024 · Although some species of earthworms will mate on the soil surface, this leaves them exposed to predators during this vulnerable … palpatine filter

Nightcrawlers - Bugwoodwiki

WebAns. Copulation in earthworms usually takes place in the rainy season from July to October through cross-fertilization. The front ends of the mating pair overlap ventrally, and each exchanges sperm with one another. Both worms back off after depositing eggs in cocoons, (onion-shaped incubator) once the mutual sperm exchange is complete. WebMay 1, 2009 · A field observation suggested that the mating of the earthworm Lumbricus terrestris L. might involve a pre-copulation behaviour sequence during which prospective partners visit each other's burrows. WebSep 7, 2024 · Earthworms have a segmented body, made up of around 100-150 segments. Muscles and bristles along the segments, called setae, help the worm to move. The setae will hold a section of the body ... エクセル 変換候補 消す