Soela Voyage SO 2/87 Biological Data Overview

This record is an overview entry for biological data collected on Soela cruise SO 2/87. This cruise took place in the Southern Ocean off the west coast of Tasmania and in the Tasman Sea off the northeast coast of Tasmania during 1-14 April 1987, under the leadership of F.R. Harden Jones. Biological data collected on this cruise include length frequency, weight, gonad weight and stage from 169 orange roughy samples. 164 orange roughy stomachs were examined, 32% were empty. Of the remainder, 95% contained crustacea and 23% fish. 7 roughy had squid parts in their stomachs and one had polychaete remains. Otoliths were collected for age determinations and ovaries from 36 females for fecundity determinations. Other species caught were the spiky oreo (Neocyttus rhomboidalis) and two large (true) hake (Merluccius australis). Acoustic and echosounder data of fish shoals. Three phyllosoma larvae samples from codend liner whilst conducting a midwater trawl on the Sandy Cape Ground. Please note: This metadata record is a preliminary entry derived from information in the cruise plan and/or cruise report. Individual data types - which may span several cruises - will be indexed separately within this metadata system in due course.本元数据记录为索拉号科考航次SO 2/87所采集生物数据的总览条目。该航次于1987年4月1日至14日开展，作业区域覆盖塔斯马尼亚西海岸外的南大洋海域，以及塔斯马尼亚东北海岸外的塔斯曼海海域，由F.R.哈登·琼斯（F.R. Harden Jones）担任首席科学家。本次航次采集的生物数据涵盖169份橙连鳍鲑（orange roughy）样本的体长频率、体重、性腺重量及性腺发育期数据；共解剖分析164份橙连鳍鲑胃容物样本，其中32%为空胃。在非空胃样本中，95%含有甲壳类动物残骸，23%含有鱼类残骸；另有7份样本的胃内检出头足类组织残体，1份样本检出多毛类动物残体。科研人员同时采集了耳石（otoliths）用于年龄鉴定，并采集了36条雌性橙连鳍鲑的卵巢用于繁殖力测定。本次航次捕获的其他物种包括尖刺奥罗鲷（Neocyttus rhomboidalis）以及2条大型真无须鳕（Merluccius australis）。此外还采集了鱼群的声学探测数据与回声测深数据。在桑迪角渔场开展中层拖网作业期间，科研人员从拖网囊网衬里获取了3份叶状幼体（phyllosoma larvae）样本。请注意：本元数据记录为基于航次计划及/或航次报告信息编制的初步条目。后续将在本元数据系统内，对跨多个航次的各类数据类型分别进行独立索引。