Department of Zoology, Government College University, Lahore, Pakistan.
Department of Zoology, University of the Punjab, Lahore, Pakistan.
J Insect Sci. 2023 May 1;23(3). doi: 10.1093/jisesa/iead030.
Present study was carried out to investigate the variation in web architecture of Larinia chloris (Audouin 1826) in relation to seasonal differences and the biotic factors of the environment. In addition, relative abundance, behavior, and predatory potential of L. chloris were also recorded. For this purpose, 100 orb-webs of L. chloris were observed in rice fields (August-October, 2022) from 3 districts of Punjab (Lahore, Sheikhupura, and Kasur). Percent abundance of L. chloriswas found to be highest in rice fields from Barki road, Lahore (39.53%). All the webs of L. chloris were vertical at height equal to the height of vegetation (115.2 ± 9.7 cm). Time required to complete the web was 45 ± 5 min. There was positive correlation between web architecture and vegetation height. Web capture area and average mesh height of L. chloris also showed positive correlation with carapace length. There was a significant difference in various web parameters (number of spirals, number of radii, capture area, average mesh height, upper radii, lower radii, left radii, and right radii) among different trapping months. A total of 1,326 insects were recorded from the 100 webs of L. chloris. The prey abundance was found to be highest in the fields from Barki Road, Lahore. The majority of the prey collected from webs of L. chloris belonged to order Diptera, Hemiptera, Coleoptera, and Lepidoptera. However, prey items recorded during different growth stages (from vegetative to ripening) varied significantly. This is the first ever report describing the ecology of L. chloris in rice fields from Punjab, Pakistan.
本研究旨在调查 Larinia chloris (Audouin 1826) 的蛛网结构在季节差异和环境生物因素方面的变化。此外，还记录了 L. chloris 的相对丰度、行为和捕食潜力。为此，在 2022 年 8 月至 10 月期间，从旁遮普省的 3 个地区（拉合尔、谢赫布尔和卡苏尔）的稻田中观察了 100 个 L. chloris 的圆网。在拉合尔的 Barki 路的稻田中，L. chloris 的百分含量最高（39.53%）。L. chloris 的所有网都是垂直的，高度与植被高度相等（115.2±9.7cm）。完成网的时间需要 45±5 分钟。蛛网结构与植被高度之间存在正相关。L. chloris 的网捕获面积和平均网眼高度也与甲壳长度呈正相关。不同的捕网月份之间，各种网参数（螺旋数、辐射数、捕获面积、平均网眼高度、上辐射、下辐射、左辐射和右辐射）存在显著差异。从 100 个 L. chloris 的网中总共记录了 1326 只昆虫。从 Barki 路的稻田中收集到的猎物丰度最高。从 L. chloris 的网中收集到的大多数猎物属于双翅目、半翅目、鞘翅目和鳞翅目。然而，在不同的生长阶段（从营养生长到成熟）记录的猎物项目差异显著。这是首次描述巴基斯坦旁遮普省稻田中 L. chloris 的生态学。
