In the genus Botryllus fusion between genetically distinct individuals is controlled by a single genetic locus (or haplotype) with multiple codominantly expressed alleles. Colonies which do not share an allele at this locus reject each other. The outcomes of juxtaposing nonfusible colonies of the colonial ascidian Botryllus schlosseri from Monterey, California, were followed in terms of colony rejection and colony vectorial growth in two sets of experiments. In the first, 2--5 subclones were isolated from each of 14 large colonies and experimentally matched to 26 nonfusible pairs. In the second, 50 nonfusible pairs of oozooids were followed for up to one year.
|Title of host publication||Invertebrate Historecognition|
|Editors||Richard K. Grosberg, Dennis Hedgecock, Keith Nelson|
|Place of Publication||Boston, MA|
|Number of pages||17|
|State||Published - 1988|