Fisheries and Marine Institute, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, Canada.
PeerJ. 2022 Jun 13;10:e13231. doi: 10.7717/peerj.13231. eCollection 2022.
The truncate soft-shell clam is an important source of country food for Inuit communities across the territory of Nunavut, Canada. also plays an important role in marine ecosystems, yet there is little understanding of their life history and condition in Canadian Arctic waters. To provide a foundation on which aspects of the life history and condition of of Baffin Island can be monitored in the future with a changing climate and fishery development, this study estimated size at maturity and provides insights into the spawning cycle and weight-length condition indices of clams from inner Frobisher Bay and the north shore of the Hudson Strait. Male and female exhibited similar lengths at 50% attainment of sexual maturity, 31 mm and 32 mm shell length (SL), respectively. Most (77%) of the sexually mature collected from inner Frobisher Bay in late August and 35% of clams collected from the Hudson Strait in early September were in the ripe stage of gonadal development. These results lead us to suggest a spring spawning season and that invest in gonadal development for the next year's spawning during the late summer-early autumn ice-free season while phytoplankton concentrations are high. Dry bodyweight-SL relationships were used to show that condition can differ significantly over small and large spatial scales based on plotted 95% confidence intervals.
扁玉螺是加拿大努纳武特地区因纽特人社区的重要食物来源。它在海洋生态系统中也扮演着重要的角色，但人们对其在加拿大北极水域的生活史和状况知之甚少。为了为未来的气候变化和渔业发展提供一个基础，以便在未来监测巴芬岛的生活史和状况的各个方面，本研究估计了成熟大小，并深入了解了来自弗罗比舍湾内部和哈德逊海峡北岸的扁玉螺的产卵周期和体重-长度状况指数。雄性和雌性 在达到性成熟的 50%时具有相似的长度，分别为 31 毫米和 32 毫米壳长（SL）。8 月底在弗罗比舍湾内部采集的大多数（77%）性成熟扁玉螺和 9 月初在哈德逊海峡采集的 35%的扁玉螺处于性腺发育的成熟阶段。这些结果使我们推测春季是产卵季节，并且 在夏末初秋冰融季节浮游植物浓度较高时，为下一年的产卵进行性腺发育投资。干体重-SL 关系用于表明， 的状况在小尺度和大尺度上可能存在显著差异，这取决于绘制的 95%置信区间。
