Thaum lub roob ris ncav 2 rau 4 xyoos, lawv tsiv rau dej tob uas lawv koom nrog cov neeg laus roob ris uas noj worms, clams, mussels, qwj thiab seaurchins. Lawv kuj noj xuab zeb nyiaj, barnacles, ntses seem thiab algae.
Ib yam li ntawd, me crabs noj dab tsi?
Me me xuab zeb roob ris ntawm mollusks, worms, plankton, thiab algae.
Ib yam li ntawd, Opilio crabs noj dab tsi? Daus roob ris cov zaub mov txawv raws li lawv lub hnub nyoog thiab lawv nyob li cas. Lav pub Feem ntau ntawm phytoplankton. Cov menyuam yaus thiab cov neeg laus yuav noj yuav luag txhua yam tab sis feem ntau nojbivalves, polychaete worms, gastropods, roob ris (nrog rau lwm cov daus roob ris), cws, thiab ntses.
Ib yam li ntawd, tej zaum koj yuav nug tias, crabs thiab cw noj dab tsi?
- Feem ntau cov dej invertebrates yog scavengers thiab yuav noj cov ntses uas tsis xav tau thiab cov khoom noj ntses uas poob rau hauv qab ntawm lub thoob dej yug ntses.
- Kom paub tseeb tias lawv muaj txaus noj, ntxiv cov khoom noj uas muaj cov pellets thiab algae wafers.
Crab puas mob thaum lawv boil?
Crab hnov mob. Plunge ib live roob ris hauv apot boiling dej, thiab nws yog yuav sim toscramble tawm. Ntau tus kws tshawb fawb tsis ntseeg uas txhua yam invertebrate (los yog ntses) xav mob vim lawv tsis muaj qhov chaw hauv lub hlwb cuam tshuam nrog tib neeg mob.
