588 



GABRIELE KASS-SIMON 



Table 9. 



Comparison of Régénération Performance of Day-Old Animais from Randomly 

 Selected Mother Animais when Transected at 50% of their Total Length under Différent 

 Feeding Conditions. TDT=Time ofTentacle Differentiation. FTN = Final Tentacle Number. 

 ITN=Initial Tentacle Number. FTN — ITN=Final Tentacle Number minus Initial Tentacle 

 Number. TRF=Tentacle Régénération Factor. UF=Unit of Food. N= Number c/Regen- 

 erated Animais ( N TRF = Number of Animais whose TRF' s > 0). 





TDT 



FTN 



ITN 



FTN— ITN 



TRF 



Well Fed 



34.53 ± 10.72 



5.54 ± 1.19 



2.95 ± 1.18 



2.74 ± 1.34 



206 ± 126 



Animais 













(6 UF/ 

 Animal) 



N = 



19 



15 



19 



15 



12/15 



Standard 



37.18 ± 5.60 



4.65 ± 0.79 



3.41 ± 0.87 



1.31 ± 0.99 



133 ± 79.8 



Animais 













(1 UF/ 

 Animal) 



N= 



19 



17 



17 



17 



11/17 



Unfed 



36.00 ± 8.50 



4.38 ± 0.72 



3.11 ± 0.93 



1.00 ± 0.89 



143 ± 66.5 



Animais 













N = 



18 



16 



18 



16 



10/16 



2. Week-old Cloned animais 



The results are summarized in Table 10. Within Group I : The only significant 

 différence was found for TRF values, with those animais fed daily manifesting a 

 high figure, while those fed at the time of séparation a low value (F=5.1, 0.05 > 

 p > 0.01). Thus, the différences in feeding time appear to influence only the 

 quantity-speed parameter of the régénération performance in this case. Within 

 Group II : None of the values proved significantly différent in t-tests, week-old 

 animais being unaffected by the time at which one unit of food was consumed. 

 Within Group IV: (animais comparable to Experiment 1, above): Only the Time 

 of Tentacle Differentiation proved to be significantly différent (F=5.38, 0.05 > 

 p > 0.01), well-fed animais regenerating faster than unfed or poorly fed animais. 



The only différences found in inter-group comparisons were: Each set of week- 

 old well-fed animais showed a significantly later TDT than their day-old counter- 

 parts (Group la : Group TV 1 : p < 0.02 ; Group Ib : Group IV X : p < 0.02 ; Group le : 

 Group : p < 0.05; t-test used). Other différences did not prove significant. 

 The six-day différence in âges between Groups I, II and III and Group IV, then, 

 does not appear to affect the régénération performance with the possible exception 

 of TDT différences for well-fed animais. 



