Method for measuring food intake of deposit feeder small benthic animals

Abstract

The invention discloses a method for measuring the food intake of deposit feeder small benthic animals, which adopts a food intake determination method based on water particle organic carbon content determination, because food of deposit feeder animals is ingested in the form of particle organic particles, digestion residues become suspended or sedimentary particle organic matters after being discharged out of the body, the organic carbon intake in a certain time period is calculated according to the quantity change of the granular organic carbon in the living environment; on the basis that the contents of nutritional ingredients such as organic carbon, protein, fat and energy in food are measured in advance, the food intake of the organic carbon is multiplied by the ratio of the contents of different nutritional ingredients in the food to the content of the organic carbon, so that the food intake of the different nutritional ingredients is obtained through conversion.

Description

【Technical field】 [0001] The invention relates to the technical field of animal food intake research, in particular to a method for measuring the food intake of sedimentary small benthic animals. 【Background technique】 [0002] Zoobenthos refer to aquatic fauna that live on the bottom of water bodies for all or most of their life history. Except for settled and active life, their habitats are mostly fixed on hard substrates such as rocks and buried in mud. Sand and other soft substrates. In addition, there are also benthic species that are attached to the surface of plants or other benthic animals, as well as inhabit the intertidal zone. In terms of feeding methods, most of them are ingested by suspended matter and sediment. Mostly invertebrates, is a complex ecological group. According to their size, they can be divided into macrobenthos and small benthos. The species and their lifestyles are much more complicated than zooplankton. Common benthic animals include gastropo...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that it is difficult to measure the food intake of small sediment-feeding benthic animals in the existing ecological research, the present invention provides a method for measuring the food intake of sediment-feeding small benthic animals. According to the food intake measurement method, since the feeding habits of sediment-feeding animals are ingested in the form of particulate organic carbon, and the digestive residues are excreted from the body, they also become suspended or sedimentary particulate organic matter. Organic carbon intake in a time period; on the basis of pre-determining the content of nutrients such as food organic carbon, protein, fat, energy, etc., by multiplying the organic carbon intake by the ratio of different nutrients and organic carbon content of the food, thus Converted to food intake of different nutrients

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