Relationships between daily growth of different groups of sword-tip squid (Uroteuthis edulis) and environmental variables in the East China Sea

Ontogenetic growth responses to the environmental changes of the swordtip squid (Uroteuthis edulis) spring stock in the East China Sea

“…The age estimation and growth analyses can provide important information on population structure and growth difference (Arkhipkin, 2005; Li et al, 2022). Cephalopod statoliths (hard structure) have unique spatiotemporal inversion properties and are good carrier for recording individual growth (Arkhipkin et al, 2018; Chen et al, 2022).…”

“…Cephalopod statoliths (hard structure) have unique spatiotemporal inversion properties and are good carrier for recording individual growth (Arkhipkin et al, 2018; Chen et al, 2022). Statolith microstructural information (daily increment and width) is widely used to reveal population structure, growth patterns, growth rates, and relationship between growth and environmental factors (Jackson et al, 1997; Li et al, 2022; Lipinski et al, 2016; Pecl, Moltschaniwskyj, et al, 2004; Sajikumar et al, 2022).…”

“…The spawning ground of the spring stock is located in the waters of northeast Taiwan (Penjiayu), where the upwelling current is caused by the steep topography change when the Kuroshio Warm Current invades the East China Sea (Cheng et al, 2022; Liao et al, 2018). Due to the upwelling current, the nutrients carried by the Kuroshio Warm Current and the bottom layer rise to the upper layers, which provide sufficient nutritional conditions and suitable abiotic environment for the early growth of the spring stock (Li et al, 2022; Wang et al, 2013). During the transition from paralarval stage to larval stage, the prey availability (crustaceans, etc.)…”

“…During the transition from larval stage to adult stage, the seasonal and annual strength of different currents affect the growth rate and reproductive accumulation of the stock in the feeding ground (Pang et al, 2020; Wang et al, 2013). Therefore, the biotic and abiotic environments of the spring stock show the differences among various life history stages, which affect individual growth and their responses to environmental variations (Li et al, 2022).…”

“…The population growth and survival of aquatic animals are highly influenced by environmental variables (temperature, salinity, etc. ), which also play an important role in the marine ecosystem (Chasco et al, 2022; Li et al, 2022). Generally, temperature is one of the important abiotic environmental factors that trigger species reproduction and growth characteristics (Wang et al, 2008).…”