Exploratory Survey of Lixus algirus L. (Coleoptera: Curculionidae) and Its Natural Enemies in Morocco

The stem borer weevil, Lixus algirus L. (Coleoptera: Curculionidae), causes severe damage to faba beans (Vicia faba L.) in Morocco. A survey was conducted to determine the distribution of L. algirus, its natural enemies, and the severity of damage it causes to faba beans in Morocco. A total of 16 an...

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Bibliographic Details
Published in:Insects (Basel, Switzerland) Switzerland), 2022-07, Vol.13 (8), p.681
Main Authors: Ait Taadaouit, Nezha, El Fakhouri, Karim, Sabraoui, Abdelhadi, Rohi, Latifa, El Bouhssini, Mustapha
Format: Article
Language:English
Subjects:
Adults
Animal feed
Beans
Biological control
Borers
Broad beans
Chlorocytus lixi
Coleoptera
Curculionidae
Cyanopterobracon
Damage
Dominant species
Eggs
faba bean stem borer
Feeds
Food
Laboratories
Legumes
Lixus
Morocco
Museums
Natural enemies
Nutrient content
Nutritive value
Parasitism
Parasitoids
Polls & surveys
Predators
Statistical analysis
Stems
Surveys
Vegetables
Vicia faba
Vicia faba L
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Summary:The stem borer weevil, Lixus algirus L. (Coleoptera: Curculionidae), causes severe damage to faba beans (Vicia faba L.) in Morocco. A survey was conducted to determine the distribution of L. algirus, its natural enemies, and the severity of damage it causes to faba beans in Morocco. A total of 16 and 27 stops were randomly selected and surveyed in the major faba bean-growing regions during the years 2017 and 2018, respectively. The Gharb region recorded the highest level of L. algirus infestation at 80% and 71.42% in 2017 and 2018, respectively, followed by the Saïs region at 58.75% and 36% in 2017 and 2018, respectively. Two egg parasitoids (Chlorocytuslixi and Anaphes longicornis), one egg predator (Orius sp.), and a larval parasitoid (Cyanopterobracon) were identified. The ectoparasitoid C. lixi was observed to be the most dominant species, with percentages of parasitism in the regions ranging between 35.75% and 70.49%. The larval parasitoid Cyanopterobracon was the second most abundant species, with percentages of parasitism ranging between 3.03% to 15.96%. Understanding the parasitoid complex of L. algirus in Morocco is necessary for the subsequent development of a biological control program.
ISSN:2075-4450
2075-4450
DOI:10.3390/insects13080681