[這篇文章最後由chlinf11在 2003/06/16 03:16am 第 2 次編輯]
https://www.wa.gov/wdfw/fish/shelfish/beachreg/2clam.htm
https://www.jamestowntribe.org/geoduck/
好噁心的海產!!
米國一磅10塊錢
Generalized life cycle of the geoduck clam: Male and female clams spawn annually beginning in late April and peaking in late June. Mass fertilization occurs in water column. Fertilized eggs develop rapidly into ciliated, motile larvae. Larval phase includes several stages (i.e. trochophore, veliger and umboned), during which time the larvae drift in the plankton for 7 months and are dispersed by water currents. The larval phase ends when larvae settle, change form, and attach themselves to a suitable substrate by byssal threads. May spend several months settling different areas using byssal threads as a "parachute" for transport by currents. Upon final settling, juvenile geoduck creates permanent burrow where it usually remains for life. Adults may live to over 140 years and reach a maximum shell length of 23 cm.
https://www.wa.gov/wdfw/fish/shelfish/beachreg/2clam.htm
https://www.jamestowntribe.org/geoduck/
好噁心的海產!!
米國一磅10塊錢
Generalized life cycle of the geoduck clam: Male and female clams spawn annually beginning in late April and peaking in late June. Mass fertilization occurs in water column. Fertilized eggs develop rapidly into ciliated, motile larvae. Larval phase includes several stages (i.e. trochophore, veliger and umboned), during which time the larvae drift in the plankton for 7 months and are dispersed by water currents. The larval phase ends when larvae settle, change form, and attach themselves to a suitable substrate by byssal threads. May spend several months settling different areas using byssal threads as a "parachute" for transport by currents. Upon final settling, juvenile geoduck creates permanent burrow where it usually remains for life. Adults may live to over 140 years and reach a maximum shell length of 23 cm.
