Cov cephalothorax muaj cheeb tsam cephalic (los yog taub hau) thiab cheeb tsam thoracic. Ib feem ntawm exoskeleton uas npog lub cephalothorax yog hu ua carapace. Lub plab yog nyob tom qab lub cephalothorax thiab muaj rau 6 qhov sib faib kom meej. Cov cephalothorax muaj 3 ntu.
Kev ua haujlwm ntawm cephalothorax hauv crayfish yog dab tsi?
The cephalothorax
Nws tiv thaiv lawv cov kab mob tseem ceeb ntawm txhua tus crayfish(lub hlwb, lub plawv, plab, zais zis, testicular, lossis zes qe menyuam). Lus Cim: Yog tias peb saib ntawm lub carapace los ntawm saum toj no, peb tuaj yeem pom qhov zawj, uas cais lub taub hau thiab hauv siab cheeb tsam. Qhov kev sib cais no yog nominal vim hais tias lub taub hau-hauv siab cheeb tsam yog qhov pib 'fused' ua ke.
Koj tuaj yeem qhia tau li cas crayfish muaj cephalothorax?
Crayfish muaj ob lub cev lub cev: cephalothorax, uas muaj taub hau thiab lub cev sab sauv, thiab tom qab ntawd lub plab, uas yog segmented kom meej. Koj tuaj yeem pom cov ntawv ntxiv ntawm ob thaj chaw.
Cheliped ntawm crayfish yog dab tsi?
Cov chelipeds yog cov claws loj uas cov crayfish siv los tiv thaiv thiab ntes cov tsiaj. Txhua ntawm plaub ntu tseem muaj ob txhais ceg taug kev. Nyob rau hauv lub plab mog, thawj tsib ntu txhua tus muaj ob khub ntawm swimmerets, uas tsim cov dej ntws thiab ua haujlwm hauv kev yug me nyuam.
Yuav ua li cas thiaj paub tias crayfish yog txiv neej lossis poj niam?
Txiv neej feem ntaukom loj dua poj niam, nrog chelae loj dua thiab lub plab nqaim. Crawfish tails host me me appendages, nrog rau swimmerets. Txiv neej crawfish nqa ib txheej ntxiv ntawm cov swimmerets, uas yog loj thiab tawv. Cov poj niam muaj qhov me me tom qab lawv cov swimmerets.
