Morphological measurements for O. cyanea derived from visual strip transects and commercial catch sampling in Lakshadweep islands, India

the data comes from o. cyanea derived from visual strip transects and commercial catch sampling carried out around agatti and kavaratti islands (arabian sea) during three survey periods between november 2008 and 20 april 2012. given that octopus fisheries in these islands are constrained by depth owing to the nature of spear-fishing and gleaning techniques (silas et al., 1985; appukuttan et al., 187 1989), we surveyed only the lagoon and intertidal areas of the two islands. the depths of the surveyed areas varied from 0.5 to 3 m. mantle length (ml = dorsal mantle length) was measured using a 1 mm graduated 210 tape and weight (tw = total body weight) was obtained using a spring balance graduated with 50 g intervals.

本数据集源自于O. cyanea，该物种的样本通过视觉带状横切法以及商业捕捞样品收集于阿拉伯海中的Agatti和Kavaratti群岛（调查期间为2008年11月至2012年4月20日）。鉴于这些岛屿的章鱼渔业受限于深度，这一限制源于投矛捕鱼和搜集等捕捞技术的特性（Silas等，1985年；Appukuttan等，1989年），因此调查仅涉及两岛潟湖及潮间带区域。调查区域的深度范围介于0.5至3米之间。利用毫米刻度的210毫米长卷尺测量了腕足长度（ML，即背部腕足长度），而总体重（TW）则是通过50克刻度间隔的弹簧秤获取。