caa a22 4500 469096748 CHVBK 20180323133033.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF00317419 doi (NATIONALLICENCE)springer-10.1007/BF00317419 Karlson R. Ecology Program, Biology Department, University of Delaware, 19716, Newark, DE, USA aut Divergent dispersal strategies in the freshwater bryozoan Plumatella repens [Elektronische Daten] ramet size effects on statoblast numbers [R. Karlson] Summary: Evaluation of size-dependent variation in statoblast numbers in Plumatella repens indicates that this freshwater bryozoan employs divergent strategies in dispersing its asexual offspring in space and time. While the numbers of sessoblasts which were cemented to local substrates did not vary per unit ramet size, numbers of floatoblasts which disperse away from the parent to colonize substrates elsewhere varied in a size-dependent manner. Large ramets produced disproportionately more floatoblasts than did small ramets. In general, this result is consistent with the optimal dispersal predictions of three alternative theoretical models. However, the fact that the total number of sessoblasts in a ramet increased with ramet size appears to violate the "constant disperser principle” of one alternative model, and the occurrence of fusion in P. repens may violate the assumption of local competition for sites in another. In order to determine which model represents an appropriate description of dispersal in P. repens, future studies should evaluate the relative importance of local competition, cooperative phenomena like fusion, and mortality among dispersed and nondispersed offspring. Springer-Verlag, 1992 Bryozoa nationallicence Dispersal nationallicence Plumatella nationallicence Ramets nationallicence Statoblasts nationallicence Oecologia Springer-Verlag 89/3(1992-03-01), 407-411 0029-8549 89:3<407 1992 89 442 https://doi.org/10.1007/BF00317419 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317419 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Karlson R. Ecology Program, Biology Department, University of Delaware, 19716, Newark, DE, USA aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 89/3(1992-03-01), 407-411 0029-8549 89:3<407 1992 89 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer