Population dynamics of the weevil Datonychus melanostictus (Coleoptera: Curculionidae) on spearmint crop in Chaouia region, Morocco

Q3 Agricultural and Biological Sciences Journal of Entomological and Acarological Research Pub Date : 2022-04-19 DOI:10.4081/jear.2022.9867

K. El Fakhouri, S. Lhaloui, B. Faouzi, A. Sabraoui, M. Rochd, R. Boulamtat, C. Ramdani, M. El Bouhssini

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Abstract

The mint rhizome borer, Datonychus melanostictus (Marsham, 1802), is a new pest of spearmint crop in Chaouia region north central of Morocco. The main damage is caused by the larvae, which tunnel inside the rhizomes. In this study, we investigated the population fluctuation of D. melanostictus in spearmint fields during two seasons 2013 and 2014 using two sampling methods. The emergence of weevil begins in late March, followed by an increase of egg laying activity during May. A strong larval activity takes place at rhizomes below ground during late May to early June. Pupation takes place mainly inside the rhizomes. New generation adults reached three peaks between June and early August 2013 and two peaks during June and July in 2014. The highest larval density recorded before flowering resulted in significant reduction of the average fresh yields to 6.6 t/ha. Protection of mint fields against D. melanostictus is a daily challenge, population dynamics can be a tool to predict and to help farmers for applying protection methods in the best way.

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摩洛哥朝亚地区薄荷作物黑褐象甲(鞘翅目:黑褐象科)种群动态

薄荷根状茎蛀虫黑柄曼陀罗（Marsham，1802）是摩洛哥中北部Chaouia地区留兰香作物的一种新害虫。主要的损害是由幼虫引起的，幼虫在根茎中穿行。在本研究中，我们使用两种抽样方法调查了2013年和2014年两个季节留兰香田中黑腹蛛的种群波动。象甲的出现始于3月下旬，随后在5月产卵活动增加。在5月下旬至6月初，地下根茎处发生了强烈的幼虫活动。幼芽主要发生在根茎内部。新一代成年人在2013年6月至8月初达到三个峰值，在2014年6月和7月达到两个峰值。开花前记录的最高幼虫密度导致平均新鲜产量显著降低至6.6t/ha。保护薄荷田免受D.melanostictus的侵害是一项日常挑战，种群动态可以成为预测和帮助农民以最佳方式应用保护方法的工具。

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来源期刊

Journal of Entomological and Acarological Research Agricultural and Biological Sciences-Insect Science

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

10 weeks

期刊介绍： The Journal of Entomological and Acarological Research (JEAR), formerly the Bollettino di Zoologia Agraria e di Bachicoltura of the Institute of Entomology of the Università degli Studi, Milano, was founded in 1928 by Remo Grandori. Thereafter, Minos Martelli and Luciano Süss hold the direction of the Journal until December 2011. In January 2012 the Editor decided for the new open-access on-line version of JEAR. The Journal publishes original research papers concerning Arthopods, but reviews, editorials, technical reports, brief notes, conference proceeding, letters to the Editor, book reviews are also welcome. JEAR has four main areas of interest: -Entomology (systematics; morphology; biology; biotechnology; agriculture, ornamental and forest entomology; applied entomology; integrated pest management; biological control; apiculture and apidology; medical, urban and veterinary entomology; etc.) -Stored product pests (biology; integrated pest management; etc.) -Insect Ecology (behaviour; biodiversity; taxonomy; plant insect interaction and ecosystems; biological control; alien species; etc.) -Acarology (systematics; morphology; biology; parasitology; control; etc.) The publication of manuscripts is subject to the approval of the Section Editor who has knowledge of the field discussed in the manuscript in accordance with the principles of Peer Review; referees will be selected from the Editorial Board or among qualified scientists of the international scientific community. Articles must be written in English and must adhere to the guidelines and details contained in the Instructions to Authors.