Invertebrates transport, regulation

Regulations that do pertain to collection of invertebrates fall into several categories where collecting may be done, what may be collected, and how specimens may be transported. The multiplicity of state, federal, and international regulations that may apply in certain instances is beyond the scope of this chapter, but some general guidelines can be given. 

The existence of an Na gradient is essential for Na -coupled glucose transport in other systems. This gradient is usually maintained by an Na" /K -ATPase that pumps more Na" ions out of the cell than ions in. However, Na" and glucose transport across the A. suum intestine is not affected by high levels of ouabain (152), indicating that, if an Na" /K -ATPase regulates the concentrations of these ions, the enzyme is distinct from that characterized in vertebrates and most other invertebrates. 

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