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gill
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gill

In biology, the main respiratory organ of most fishes and immature amphibians, and of many aquatic invertebrates. In all types, water passes over the gills, and oxygen diffuses across the gill membranes into the circulatory system, while carbon dioxide passes from the system out into the water.

In aquatic insects, these gases diffuse into and out of air-filled canals called tracheae.

gill

Imperial unit of volume for liquid measure, equal to one-quarter of a pint or four fluid ounces (0.118 liter). It is used in selling alcoholic drinks.
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This would lend credence to Lauckner's (1983) conclusions that ancistrocomids, normally gill parasites that cause little pathology to their host, in some cases become opportunistic and invade the host's tissues under abnormal conditions of physiologic stress.
Parasitic and symbiotic fauna in oysters (Crassostrea virginica) ... by Tolley S. Gregory / Journal of Shellfish Research
All fish were weighed, measured, and sexed, and all data relevant to gill parasites were recorded.
An ecological and morphological study of the monogenean, ... by Baker, Tiffany G.; Roumillat, William A.; de Buron, Isaure / Bulletin of the South Carolina Academy of Science
Our main objective was to quantify differences in the prevalence (percent fish infested) and mean intensity (average number of parasites per infested fish) of gill parasites infesting the northern and southern rock soles (see Margolis et al.
Differential parasitism by Naobranchia occidentalis (Copepoda: ... by Zimmermann, Mark; Harrison, Robin C.; Jones, Anthony F. / Fishery Bulletin
 
 
 
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