Community structure and distribution of chaetognaths were investigated along the upwelled and non-upwelled waters of Southeastern Arabian Sea (SEAS) from the coastal, shelf and open ocean regions. With the onset of monsoon, intense upwelling along the southern part of SEAS (8° 28′ N) and a weak coastal upwelling along the northern counterpart (15° 30′ N) was evident. Zooplankton biomass was observed to be high in the upwelled waters with the dominance of copepods. Chaetognaths were also observed in significant numbers all along the SEAS, however maximum numerical abundance was observed in the southern upwelled waters. Chaetognaths belonging to 10 genera were identified of which genus Flaccisagitta (54%) made the most dominant group along the entire study area followed, in order of abundance, by Serratosagitta (20%), Mesosagitta (18.2%), Sagitta (12.3%), Ferosagitta (11%) and Krohnitta (6.4%). Flaccisagitta were observed to be abundant in the upwelled waters along with Pterosagitta, Serratosagitta, Sagitta, Krohnitta and Ferosagitta whereas genus Mesosagitta dominated the non-upwelled waters of northern transects.

在沿海，陆架和公海地区，在东南阿拉伯海（SEAS）上涌水和非涌水水域中，对gna鱼的群落结构和分布进行了调查。随着季风的爆发，在东南亚南部（8°28'N）出现了强烈的上升流，而在北部（15°30'N）出现了较弱的沿海上升流。在上流水域中浮游动物的生物量较高，而high足类动物占优势。在整个SEAS中也观察到大量的木犀属，但是在南部上升流水域中却发现了最大的数量丰度。鉴定出属于10个属的木犀属（Chaetognaths），其中Flaccisagitta属（54％）在整个研究区域中是最主要的组，其后依次是：Serratosagitta（20％），Mesosagitta（18.2％），Sagitta（12.3％），Ferosagitta（11％）和Krohnitta（6.4％）。Flaccisagitta观察到在沿涌水域丰富Pterosagitta，Serratosagitta，箭，Krohnitta和Ferosagitta而属Mesosagitta为主的北部断面的非涌水域。