The objectives of this study were to describe the (1) location of Proterometra macrostoma rediae in the snail intermediate host, Elimia semicarinata, and (2) daily emergence of cercariae from individual snails over 3 weeks. Decalcification and histological sections of infected snails revealed rediae restricted to the bottom whorl within the mantle cavity in close association with the host gills. A continuous, low-level emergence of cercariae (0.25–0.833 larvae/snail/day) was observed over 21 days. Both moderately frequent (7–12 days) and infrequent (2–6 days) shedding of cercariae were observed (i.e., mean ± SE = 7.3 ± 0.4 days; range = 2–12 days), but no consistent pattern was apparent. The average ± SE number of rediae was significantly smaller in snails shedding only 2–6 days (11.9 ± 2.9) than snails shedding between 7–12 days (35.2 ± 8.5) at the termination of the experiment.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 66 • No. 2