Crustacea - feeding and digestion in arthropods, Biology

Crustacea - Feeding and Digestion in Arthropods

Branchiopods (Anacostraca) give a good instance for filter feeding mechanism. The appendages are of foliaceous type (leaf-like) called phyllopodia and they can beat metachronally. The inner edge of these appendages bears a series of endites, the most basal endite being larger as compared to the others. The backwardly directed endites bear large setae that are as well backwardly directed. The outer edge of the limb has several lobes. The most distal of these lobes is the exopodite when the basal ones are epipodite and protopodite. The limbs carry out different functions. They are locomotory, feeding and because of their delicate structure can also function like respiratory organs. The beating of limbs produces currents in surrounding water and brings in the food particles. In between the limbs present on one side, there is an inter limb space. The food materials are trapped on to the setae of endites that act as the filtering elements of the food capturing mechanism. The filtered food materials are taken to the mouth.

Copepods such as Calanus resort to maxillary filter feeding. In these organisms feeding current is made by a swimming vortex. The maxillary setae act as a filter and collect the food when the water passes by them. The setae on maxillular endites and maxillipeds eliminate the food from the maxillary setae and pass it onto the mouth.

Posted Date: 2/4/2013 4:11:27 AM | Location : United States







Related Discussions:- Crustacea - feeding and digestion in arthropods, Assignment Help, Ask Question on Crustacea - feeding and digestion in arthropods, Get Answer, Expert's Help, Crustacea - feeding and digestion in arthropods Discussions

Write discussion on Crustacea - feeding and digestion in arthropods
Your posts are moderated
Related Questions
Observing root hairs Study the root hairs with a hand lens and view how they are constructed.

What is the difference between homologous and heterologous immunoglobulins? Homologous immunoglobulin is the human (from the similar species) immunoglobulin. In case of inocula

Agro Industrial-Incriminating factors in feeds There are many anti-nutritional factors present in feeds and fodders which affect the utilization of nutrients. Some of these are

why do ecological models commonly have limited applications?

Explain Precautions for Gram Staining of Bacterial Cultures? 1. Heat fix the smear, otherwise cells would be washed off. 2. Fresh 24 hrs old culture should be used. Gram var

Define the term- Ultrafiltration Ultrafiltration occurs when the flow of a substance across a cell membrane is increased by a hydrostatic pressure. This process was initially b

Define Absorption, Storage and Elimination of cyanocobalamin? Vitamin B 12 in food is bound to proteins and is only released by the action of a high 'Concentration of hydroch

Give the introduction to Congenital Heart Disease ? The past 3 or 4 decades have witnessed a revolution in pediatric cardiac sciences. A number of conditions previously conside

Examination of the Prosthesis It is important to examine the prosthesis thoroughly.  This involves assessing mobility, checking screws, evaluating attachments and porcelain res

Corpus Allatum and Prothoracic Gland Corpus Allatum The corpus allatum is situated in the neck region of insects. It is generally a rounded, solid and translucent struc