Biology 3332A Study Guide - Acanthocephala, Chondrichthyes, Sea Louse

• School: Western University
• Department: Biology
• Course: Biology 3332A
• Professor: Ron Podesta

Document Summary

Adult on skin, asexual serial polyembryony in uterus, larva emerges & matures. Adult in gills, pass unembryonated egg, oncomiracidium hatches and. Cement glands: males possess to seal vagina after copulation. Adult attached to sh digestive tract, egg released to water, eggs coat bres entangle with algae, Amphipod eats algae, egg hatch & develop acanthellae, develop into cystacanth. Fish eats amphipod or small paratenic host, juvenile released, matures. Cystacanth alters amphipod behaviour - more susceptible to predation. Adults in small intestine, deposit larva in mucosa, larva encyst in muscle, larva. Adults in colon, pass unembryonated eggs in feces, embryonate, ingested by. Trichuris: whipworms; infect humans. human & larvae hatch in small intestine. M2-l3, l3 ingested and penetrates mucosa, m3-l4, m4 to adult, migrates to lumen. Adult in intestinal lumen, pass unembryonated eggs in feces, l1 hatch, m1-l2, Adult in small intestines, eggs passed in feces, hatch into juvenile rhabditiform,