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Containing water-soluble nutrients, vermicompost is a nutrient-rich organic fertilizer and soil conditioner in a form that is relatively easy for plants to absorb. [3] Worm castings are sometimes used as an organic fertilizer. Because the earthworms grind and uniformly mix minerals in simple forms, plants need only minimal effort to obtain them.
Glycera. (annelid) 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. Although both are visually-similar and commonly-used as fishing bait, bloodworms are ...
The annelids (/ ˈænəlɪdz /), also known as the segmented worms, comprise a large phylum called Annelida (/ əˈnɛlɪdə /; from Latin anellus 'little ring'). [ 3 ][ a ] It contains over 22,000 extant species, including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecologies – some in marine ...
Nematode. Nemata Cobb, 1919 emend. The nematodes (/ ˈnɛmətoʊdz / NEM-ə-tohdz or NEEM-; Greek: Νηματώδη; Latin: Nematoda), roundworms or eelworms constitute the phylum Nematoda. [ 3 ][ 4 ] They are a diverse animal phylum inhabiting a broad range of environments. Most species are free-living, feeding on microorganisms, but many ...
Cyclotella is a genus of diatoms often found in oligotrophic environments, both marine and fresh water. It is in the family Stephanodiscaceae and the order Thalassiosirales. [ 1 ] The genus was first discovered in the mid-1800s and since then has become an umbrella genus for over 100 different species, the most well-studied and the best known ...
Caddisfly cases are open at both ends, the larvae drawing oxygenated water through the posterior end, over their gills, and pumping it out of the wider, anterior end. The larvae move around inside the tubes and this helps maintain the water current; the lower the oxygen content of the water, the more active the larvae need to be.
Ditylenchus dipsaci is a plant pathogenic nematode that primarily infects onion and garlic. [2] It is commonly known as the stem nematode, the stem and bulb eelworm, or onion bloat (in the United Kingdom). [3][4] Symptoms of infection include stunted growth, discoloration of bulbs, and swollen stems. D. dipsaci is a migratory endoparasite that ...
Clam worms are an important food source for bottom-feeding fish and crustaceans, though they also feed on different species of aquatic plants such as algae and diatoms. [6] By feeding on organic matter and types of waste and debris that is in the surrounding water the worm is commonly classified as a deposit feeder, more specifically omnivorous ...