Fig. 5

Monthly frequency of insemination (a) and of mature ovaries (ST4) (b) of female Melicertus kerathurus per size group (small: <30 mm CL; medium: 30–40 mm CL, large: >40 mm CL) in Thermaikos Gulf for the study period 2000–2002 (Numbers along axis × represent total number of females from pooled data)