MUTATION, FERTILITY, AND LONGEVITY IN 1M1HKI) JAPAN) M M I: I I I I>',\| 



strongest of a weak progeny (table ISA), produced inbred offspring from J different 

 males (uncles) during 3 years her second, third, and fourth year.-. The number 

 of eggs, offspring, and the data for sex and longevity from these t IIP ! .!- 



26, 27, 26A) is as follows: 



1910 (<f76), 10 eRRs, 10 tested, 8 hatched. Icf. 2 9 , 5? (?8 monthi). 



1911 (c?76), 30 eggs, 25 tested, 25 hatched. Trf 1 , 99, 9? (26+ month*). 

 1012 (c?40), 10 eggs, 2 tested, 2 hatched, Od", 1 V . 1? (:tj months). 



It is obvious, therefore, that, in the inbreeding of uncle and mere. amon^ 

 Japanese turtle-doves, a long-lived progeny is difficult to obtain. Tin- n-ult.- 

 however, more favorable than were obtained in the brother-and-.-ister matings. 

 They are at the same time less favorable than the out-crosses with >'//</>/</ lin. 

 These several matings all disclose the weakness of the la.-t germs of the season. 



The large family produced in the unclc-and-niece mating of I'.tl 1, whose origin 

 in detail is given in table 27, becomes, in the next chapter, the subject of a further 

 study on the relation of "season of hatching" to "fertility." 



TABLE 20. 

 cf 108 "Mutant" T. orientalis; "much white" 9/7/10 ...... 3/8/13; 30 mo. 1 dm. (e pi. 7). 



9 433 Normal (?) T. orientals; 7/18/11 ...... 11/27/13; 28 mo. 9 da. (see pi. 7). 



The parents are both inbreds, and are related (see sketch of this, page 42). 



AA 1. 3/19/12; ? deserted. 



AA 2. 3/21/12; ? deserted. 



A 1. 4/1; no development. C 1. 4/28; no development. 



A 2. 4/3; no development. C 2. 4/30; no development. 



B 1. 4/19; not tested. D 1. 5/8; trace development. 



B 2. 4/21; soft shell. D 2. 5/10; 4 to 5 day embryo. 



9 El. 5/30... ..normal ............... 895 ............ dead 9/18/12 ....... 3 mo. 1- 



c?E2. 6/1 ..................... normal ............... 84>5 ............ dead 7, 1 1 mo. 18 d*. 



F 1. 6/8; not tested (analysis). 



F 2. 6/10; not tested (analysis). 

 d'Gl. 6/18 .................... normal ............... 826 ............ dead 3/1/13. .. ..8 mo. 12 d. (tee pi. 7) 



G2. 6/20; trace, or no development. 



H 1. 6/27 .................... normal ............... 818 ............ disappeared (probably dead) at 9 or 10 mo. 



H 2. 6/29; failed to hatch. 

 I 1. 7/6; 13 day embryo (irregular incubation). 

 $12. 7/8 ..................... normal ............... 891. . . .dead 4/13/13. . 



3* j ! 7/i4 white tail ............. 879 ............ dead 4/2/13. S mo. 19 da. (et pi. 71 



9 J2. 7/16.". '.'.'.'. .............. normal ............... 880 ............ dead 4/20/13. . ..9 mo. 4 da. (see pi. 7) 



K 1. 7/24; on ground, broken. 



K 2. 7/26 .................... hatched 8/10 ......................... dead 8/12 1-' 



9 L 1. 8/l\one white tail + ........................... 861. ...] ....... dead 3/1 . 



9L2. 8/3/other white tail + ...................... 874.. .dead 4/9/13. 



, M 1. 8/12\one much white ' ................... S59cf .......... dead 3/2f, 13 7 ,.. 14 ,la. (see pi. ' 



cfand? M2 8 / 14 j other muc hwhite- ................. 801 (?).. ..dead 12/13/ 



In 1913 this female refused to mate with male T. oritntalis (69). She died from exposure (M nearly 

 naked) on trip Chicago to New York more than 15 months after the close of the above record. 

 9/30 to 11/26/13 she was with a St. alba (d"672) without mating (could not gain perch). 



1 Also club feet, defective feathering. 



^Also club feet, defective feathering, and only ont kidniv. 



TABLE 21. 



cfT. orientalis (22); 9/20/03; brother: 6/19/06; (one blind eyn; 33 mo. 

 9 T. orientalis (21)"; 9/18/03: sister; 7/12/08; (has bad eye); 58+ mo. 



A 1. 4/1/05; some development. 

 A 2. 4/3/05; some development. 

 Bl. 6/27 ......... 50 ......... dead ............ 



B 2. 6/29; pricked shell, unable to hatch. 



