On reproductive biology of tanner crab Chionoecetes bairdi Rathbun, 1924 (Crustacea, Decapoda) females at southeastern Kamchatka

Abstract

Fecundity and some other reproductive characteristics of tanner crab Chionoecetes bairdi females are studied for the first time in the area at southeastern Kamchatka on the materials collected in spring and summer aboard research vessels (in 2016 and 2019) and fishing boats (in 2020). The females with new eggs prevailed in the catches. The size of functional sexual maturity was determined as 79 mm. The implemented fertility was estimated as 93.4 ± 28.1.103 eggs in 2016 and 115.7 ± 24.5.103 eggs in 2019, on average. Reproductive effort and K/r-coefficient were evaluated; their relatively high values confirmed r-strategy of tanner crab reproduction.

Keywords

• самки
• краб-стригун бэрда
• chionoecetes bairdi
• плодовитость
• размер половозрелости
• репродуктивное усилие
• k/r-коэффициент