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Lac tubes created by Kerria lacca. Kerria lacca is a species of insect in the family Kerriidae, the lac insects.These are in the superfamily Coccoidea, the scale insects.. This species is perhaps the most commercially important lac insect, being a main source of lac, a resin which can be refined into shellac and other product
Kerriidae is a family of scale insects, commonly known as lac insects or lac scales.Some members of the genera Metatachardia, Tachardiella, Austrotacharidia, Afrotachardina, Tachardina, and Kerria are raised for commercial purposes, though the most commonly cultivated species is Kerria lacca.
"The findings break from the traditional interpretation of marine ecology found in textbooks, which states that nearly all sunlight in the ocean is captured by chlorophyll in algae. Instead, rhodopsin-equipped bacteria function like hybrid cars, powered by organic matter when available — as most bacteria are — and by sunlight when nutrients ...
It can be found free-swimming in tropical marine waters, commensally in the gut microflora of marine animals, and as both a primary and opportunistic pathogen of a number of marine animals. [151] It is thought to be the cause of the milky seas effect , where a uniform blue glow is emitted from seawater during the night.
The intestine is divided in two by a sphincter, with the latter part being highly coiled and functioning to compact the waste matter into faecal pellets. The anus opens just behind the foot. [18] Chitons lack a clearly demarcated head; their nervous system resembles a dispersed ladder. [19]
Slipper lobsters are typically bottom dwellers of the continental shelves, found at depths of up to 500 metres (1,600 ft). [6] Slipper lobsters eat a variety of molluscs, including limpets, mussels and oysters, [7] as well as crustaceans, polychaetes and echinoderms. [8]
Giant isopods have been recorded in the West Atlantic from the US state of Georgia to Brazil, including the Gulf of Mexico and the Caribbean. [1] The four known Atlantic species are B. obtusus, B. miyarei, B. maxeyorum, and B. giganteus, and the last of these is the only species recorded off the United States.
The outer layer is about 30 μm thick, black, and is made of iron sulfides, containing greigite Fe 3 S 4. [27] This species is the only extant animal known to feature this material in its skeleton. [2] The middle layer (about 150 μm) is equivalent to the organic periostracum which is also found in other gastropods. [27]