Table 3 Growth characteristics of 5-year-old Mya arenaria of the 1988 and 1999 generations (samplings of 1993 and 2004, respectively) and results of individual age rows comparison
Location | Characteristics | Shell length (mm) | Shell length during winter growth delay (mm) | N | A | ||||
|---|---|---|---|---|---|---|---|---|---|
Number of the growth marks | |||||||||
1 | 2 | 3 | 4 | 5 | |||||
MT_1 | Min | 11.4 | – | 3.5 | 8.2 | 11.7 | 13.1 | 60 | 5 |
Max | 43.0 | – | 14.6 | 24.9 | 35.2 | 41.2 | |||
Average | 24.3 ± 0.6 | – | 7.5 ± 0.3 | 13.8 ± 0.4 | 19.2 ± 0.5 | 23.0 ± 0.6 | |||
LT_1 | Min | 10.2 | – | 4.5 | 6.6 | 10.2 | 11.8 | 111 | 4 |
Max | 38.1 | – | 15.5 | 25.8 | 33.2 | 37.0 | |||
Average ± SE | 25.0 ± 0.5 | – | 9.4 ± 0.2 | 16.1 ± 0.4 | 21.0 ± 0.5 | 23.7 ± 0.5 | |||
MT_2 | Min | 13.5 | – | 5.4 | 8.9 | 10.9 | 13.4 | 25 | 3 |
Max | 29.2 | – | 10.2 | 17.6 | 23.1 | 26.3 | |||
Average ± SE | 20.3 ± 0.6 | – | 7.3 ± 0.2 | 12.4 ± 0.5 | 16.3 ± 0.6 | 19.5 ± 0.7 | |||
LT_2 | Min | 10.6 | – | 4.4 | 7.5 | 12.6 | 16.4 | 22 | 4 |
Max | 31.0 | – | 11.5 | 21.2 | 26.3 | 29.8 | |||
Average ± SE | 19.5 ± 0.5 | – | 6.8 ± 0.7 | 11.6 ± 0.8 | 15.8 ± 1.5 | 18.6 ± 1.6 | |||
MT_3 | Min | 11.4 | – | 3.8 | 6.3 | 8.0 | 10.0 | 79 | 7 |
Max | 26.6 | – | 10.4 | 16.0 | 20.7 | 23.8 | |||
Average ± SE | 17.5 ± 0.2 | – | 6.4 ± 0.3 | 9.5 ± 0.2 | 12.4 ± 0.2 | 15.4 ± 0.2 | |||
MT_4 | Min | 26.4 | – | 4.7 | 10.0 | 15.8 | 20.7 | 70 | 4 |
Max | 45.6 | – | 13.6 | 20.7 | 30.6 | 39.7 | |||
Average ± SE | 35.7 ± 0.6 | – | 7.9 ± 0.2 | 15.7 ± 0.3 | 22.6 ± 0.4 | 30.6 ± 0.5 | |||