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The genus Glycera is a group of polychaetes (bristle worms) commonly known as bloodworms.They are typically found on the bottom of shallow marine waters, and some species (e.g. common bloodworms) can grow up to 35 cm (14 in) in length.
Glycera dibranchiata, also known as one variant of bloodworm, are segmented, red marine worms that grow up to 14-inches in length and have unique copper teeth made up of a mixture of protein, melanin and 10% copper. This copper concentration is the highest among any animal.
Strongylus vulgaris (large strongyles), [1] commonly known as the blood worm, [2] is a common horse parasite in the phylum Nematoda. It looks like a long worm with a large biting mouth. They are usually reddish in color because of all the blood they take from the equine host. [1]
The eye spots sense when the epitoke reaches the surface and the segments from millions of worms burst, releasing their eggs and sperm into the water. [19] A similar strategy is employed by the deep sea worm Syllis ramosa, which lives inside a sponge. The rear ends of the worm develop into "stolons" containing the eggs or sperm; these stolons ...
Blood worm or bloodworm is an ambiguous term and can refer to: Larvae of a non-biting midge (family Chironomidae ) containing hemoglobin Glycera (annelid) , a polychaete often used for fishing bait
Anglers sometimes find that worms are more effective bait than artificial flies, and worms can be kept for several days in a tin lined with damp moss. [52] Ragworms are commercially important as bait and as food sources for aquaculture, and there have been proposals to farm them in order to reduce over-fishing of their natural populations. [51]
Eggs are laid in or near the water. [3] Larvae are red due to a large amount of haemoglobin in their blood, which leads to their common name of blood worms. [3] [4] The larvae use this haemoglobin as an oxygen store, allowing them to survive in low oxygen conditions such as at the bottom of a lake or in areas with high organic pollution. [4]
During the spring and summer, males create mating swarms which people can find quite a nuisance, though adults do not bite or feed. Females lay egg masses in water where the egg mass will grow and sink to the bottom. The larvae stay at the bottom in silken tubes. [4] The larvae feed on organic material such as organic debris and algae.