Abstract

A total of 45 seafloor sediments procured from shelf-slope region off Chennai–Cuddalore in the Bay of Bengal and analyzed for ostracod population revealed the presence of 41 species in 30 genera. Based on the results, the dominant species include Cushmanidea spp., Actinocythereis scutigera, Caudites javanus, Neomonoceratina iniqua, Spinoceratina spinosa, Stigmatocythere spp., Tanella gracilis and Lankacythere spp. Shapes, sizes and sculpture of ostracod carapaces/valves reflect the textural characteristics of substrates displaying their preference of habitats along with other ecological factors such as temperature, salinity, pH and dissolved oxygen content which seem to positively influence the abundance of diverse ostracod population at various depths.

Research highlights

1. 1.

   The study conducted in this region for the first time revealed the presence of 41 species.

2. 2.

   The ostracod population is dominantly benthic preferring sandy sediment substrates.

3. 3.

   Ornamentation of ostracod valves is influenced by the energy conditions prevailing in the shelf-slope region.

4. 4.

   Overall, environmental factors play a role in the spatial distribution of ostracods.

中文翻译：

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来自东印度大陆架斜坡沉积物的最新海洋介形虫及其对海洋流体动力学的响应

摘要

从孟加拉湾金奈-库达洛尔附近的陆架坡地区采购的总共 45 种海底沉积物，对介形虫种群进行了分析，结果显示存在 30 属 41 种。结果表明，优势种包括Cushmanidea spp.、Actinocythereis scutigera、Caudites javanus、Neomonoceratina iniqua、Spinoceratina spinosa、Stigmatocythere spp.、Tanella gracilis和Lancythere属 介形甲壳/瓣膜的形状、大小和雕刻反映了基质的质地特征，显示出它们对栖息地的偏好以及其他生态因素，如温度、盐度、pH 值和溶解氧含量，这些因素似乎对不同介形动物种群的丰度有积极的影响。深度。

研究亮点

1. 1.

   在该地区进行的研究首次揭示了 41 种物种的存在。

2. 2.

   介形虫种群主要是底栖动物，更喜欢沙质沉积物基质。

3. 3.

   介形虫瓣的装饰受到大陆架斜坡地区盛行的能量条件的影响。

4. 4.

   总体而言，环境因素在介形虫的空间分布中起作用。