Is Sexual Size Dimorphism Inherent in the Scallop Patinopecten yessoensis?

Table 2

Patinopecten yessoensis. Wet weight and size parameters of the same aged males and females from the population inhabiting Ozero Vtoroe Bay. indicates significant differences between parameters at a level (-test). — indicates that data were not compared. Bold marks higher values. is sample size.

Parameters, g	Males	Females
2-year-olds
Total weight	63.7 ± 4.8	63.9 ± 8.1	—
Adductor muscle weight	8.7 ± 0.5	9.6 ± 2.5	—
Shell weight	31.4 ± 2.2	30.5 ± 2.5	—
Remains of soft tissues without gonads	9.5 ± 0.7	9.9 ± 0.5	—
Shell height	78.2 ± 1.8	78.5 ± 3.5	—
Shell length	82.4 ± 2.0	83.8 ± 2.3	—
Shell width	19.3 ± 0.7	19.0 ± 1.7	—
3-year-olds
Total weight	163.1 ± 8.5	167.4 ± 8.7	0.3641
Adductor muscle weight	28.5 ± 1.4	28.0 ± 1.9	0.6659
Shell weight	73.8 ± 4.1	74.5 ± 3.6	0.4440
Remains of soft tissues without gonads	22.4 ± 1.1	24.0 ± 1.1	0.1081
Shell height	110.6 ± 1.7	114.2 ± 1.5	0.0869
Shell length	113.5 ± 1.9	116.9 ± 1.9	0.1046
Shell width	28.0 ± 0.7	29.7 ± 0.7	0.0823
4-year-olds
Total weight	297.9 ± 8.5	266.6 ± 10.8	—
Adductor muscle weight	46.7 ± 1.4	32.0 ± 2.6	—
Shell weight	129.0 ± 5.2	123.8 ± 4.6	—
Remains of soft tissues without gonads	32.4 ± 1.1	30.4 ± 1.9	—
Shell height	132.6 ± 1.9	130.2 ± 2.5	—
Shell length	136.1 ± 2.0	132.5 ± 2.7	—
Shell width	34.1 ± 1.2	34.0 ± 1.9	—
5-year-olds
Total weight		339.4 ± 11.7	0.0433
Adductor muscle weight		52.4 ± 1.7	0.0421
Shell weight		150.1 ± 6.0	0.0489
Remains of soft tissues without gonads	48.7 ± 2.1	45.6 ± 1.5	0.0651
Shell height	134.8 ± 1.9	132.5 ± 1.6	0.1887
Shell length	145.5 ± 2.9	141.8 ± 1.8	0.1625
Shell width	38.0 ± 0.9	36.6 ± 0.5	0.0598
6-year-olds
Total weight	416.6 ± 12.5	403.8 ± 12.5	0.2504
Adductor muscle weight	64.7 ± 2.2	63.6 ± 2.4	0.3693
Shell weight	181.0 ± 6.6	171.8 ± 6.0	0.1584
Remains of soft tissues without gonads	53.9 ± 1.5	51.6 ± 1.7	0.1589
Shell height	139.3 ± 1.5	137.5 ± 1.6	0.4153
Shell length	150.6 ± 2.0	149.6 ± 1.8	0.7420
Shell width	39.7 ± 0.5	39.1 ± 0.6	0.4687
7-year-olds
Total weight	379.8 ± 17.3	366.0 ± 16.5	0.2923
Adductor muscle weight	55.2 ± 2.8	55.7 ± 3.1	0.4581
Shell weight	163.2 ± 9.4	158.8 ± 8.4	0.3353
Remains of soft tissues without gonads	50.3 ± 2.6	46.1 ± 2.1	0.1190
Shell height	136.7 ± 2.1	134.7 ± 2.2	0.5567
Shell length	147.7 ± 2.4	146.3 ± 2.8	0.7270
Shell width	37.2 ± 0.7	36.4 ± 0.6	0.4467
8-year-olds
Total weight		407.0 ± 11.7	0.0360
Adductor muscle weight		59.0 ± 1.7	0.0191
Shell weight		172.1 ± 6.0	0.0097
Remains of soft tissues without gonads	55.1 ± 3.4	51.8 ± 2.8	0.2276
Shell height	140.6 ± 3.3	137.8 ± 2.1	0.5013
Shell length	152.7 ± 2.9	150.9 ± 2.4	0.6371
Shell width	39.1 ± 0.8	39.8 ± 0.5	0.5250