Cold hardiness of the green gemmules of Spongilla lacustris L. (Porifera: Spongillidae) |
| |
Authors: | Paul E. Fell Erika D. Levasseur |
| |
Affiliation: | (1) Department of Zoology, Connecticut College, 06320 New London, CT, USA;(2) St. Bernard High School, 06382 Uncasville, CT, USA |
| |
Abstract: | Most green gemmules of Spongilla lacustris survived enclosure in ice at –20 °C for up to 30 days; however, their rate of germination at 20 °C was less rapid than that of control gemmules. The length of time spent at low temperature had little effect on gemmule survival. In contrast, repeated cooling to –20 °C and warming to 4 °C led to a progressive decline in gemmule viability. These results indicate that cold injury occurs primarily during transitions between high and low temperatures. |
| |
Keywords: | gemmules cold tolerance sponge Spongilla lacustris |
本文献已被 SpringerLink 等数据库收录! |
|