. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. L-l 2O r- CM fi 9 CM 3 f 8 =) d 100 _*_ j »« CO c f ~ _i ie « K-) CO 0 O ID -| d 51 g 2 f T i/i > § S OJ • QD 31 0 CO, _J r° 1 ~ ^ d 16 l£ j5 CD i* « 6 i P in o O Q £ c g J-T3 49~1 o 5?^ o -i si 5 Co 9 CD ^ d 5] Figure 2. a. A hierarchy in the resorption between tour eolonies of generation II (refer to Fig. 1). The arrowheads point to the inferior partner. Numbers printed along the arrows refer to, respectively: days for complete resorption, zooid ratio (in parentheses, calculated as: the number of zooids in the inferior/
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. L-l 2O r- CM fi 9 CM 3 f 8 =) d 100 _*_ j »« CO c f ~ _i ie « K-) CO 0 O ID -| d 51 g 2 f T i/i > § S OJ • QD 31 0 CO, _J r° 1 ~ ^ d 16 l£ j5 CD i* « 6 i P in o O Q £ c g J-T3 49~1 o 5?^ o -i si 5 Co 9 CD ^ d 5] Figure 2. a. A hierarchy in the resorption between tour eolonies of generation II (refer to Fig. 1). The arrowheads point to the inferior partner. Numbers printed along the arrows refer to, respectively: days for complete resorption, zooid ratio (in parentheses, calculated as: the number of zooids in the inferior/superior partners on the day of fusion), percent increase or decrease of zooids in the superior partner from the day of fusion until a complete resorption of the inferior partner. The letter D refers to a case where a disconnection between the partners in a specific chimera occurs. In that case, the numbers along the arrow indicate: days from fusion to disconnection, number of zooids of the left colony on the day effusion vs. the number of zooids of the right colony (in parentheses). Disconnection between the partners within a Botryllus chimera is one of the variations in the outcome to chimera formation, resulting from unsuccessful fusion (Rinkevich and Weissman, 1989), reciprocal resorption (Rinkevich and Weissman, 1987a, 1989), or from a retreat growth phenomenon (Rinkevich and Weissman, 1988). These physiological-genetic-morphological parameters may lead to early separation between the partners before a complete resorption of the inferior partners in a chimera is obtained (Rinkevich and Weissman, 1988, 1989). The hierarchial tendency in the resorption phenomenon is, in most of the cases, already observed before separation between the candidates cancels this reaction. However, we did not count disconnection even when figuring hierarchy. In each such case, at least one additional chimera, where full resorption was accomplished, is assayed. It should be noted, howeve
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
