Feeding wild ocean crabs

[J2FcM]

Is there anything in particular people consider when feeding their mantis wild crabs or other inverts?

For example, worrying about where it was caught for pollutants, disease?
Also, in a lot of videos I see people just chuck in their prey (crabs, hermits, etc...) does this sort of shock and stun the crab since there seems to be no acclimation process?

Which leads me to wonder... if I took a wild ocean crab and tossed it into a mantis tank, and the mantis didn't eat it... would it just die of shock???

 

[acrodave]

most crabs are tuff.and make it if they dont get ate

 

[Gonodactylus]

We have some data showing that feeding stomatopods and octopus local crabs and snails from the Berkeley Marina (San Francisco Bay) could lead to problems - probably do to high levels of heavy metals. Prey taken from 40 miles up the coast seemed much less likely to cause a problem.

Temperature and salinity are certainly something to consider when adding local Southern California prey to a warm water tank. However, intertidal species can often tolerate higher temperatures for some time so unless you put the animal straight from the ocean into the tank, it should survive for at least a few hours/days.

Roy

 

[J2FcM]

hmmmm... So Cal vs San Fran Bay for a battle of top pollutant concentration....