scholarly journals Oviposition Patterns of Asian Phytophagous Ladybird Beetles(Coleoptera, Coccinellidae, Epilachninae).

Tropics ◽  
2001 ◽  
Vol 10 (3) ◽  
pp. 353-362 ◽  
Author(s):  
Susumu NAKANO ◽  
Haruo KATAKURA ◽  
Idrus ABBAS ◽  
Sih KAHONO ◽  
Koji NAKAMURA
Keyword(s):  
Ladybird Beetles

scholarly journals Molecular phylogeny reveals food plasticity in the evolution of true ladybird beetles (Coleoptera: Coccinellidae: Coccinellini)

2017 ◽  
Vol 17 (1) ◽  
Author(s):  
Hermes E. Escalona ◽  
Andreas Zwick ◽  
Hao-Sen Li ◽  
Jiahui Li ◽  
Xingmin Wang ◽  
...  
Keyword(s):  
Molecular Phylogeny ◽  
Ladybird Beetles

Clutch and egg size in ladybird beetles

Entomophaga ◽  
1991 ◽  
Vol 36 (3) ◽  
pp. 329-333 ◽  
Author(s):  
L. A. Stewart ◽  
A. F. G. Dixon ◽  
Z. Ruzicka ◽  
G. Iperti
Keyword(s):  
Egg Size ◽  
Ladybird Beetles

Revision of Malagasy species of the genus Merma Weise (Coccinellidae: Epilachnini)

Zootaxa ◽  
2022 ◽  
Vol 5087 (4) ◽  
pp. 571-582
Author(s):  
KAROL SZAWARYN ◽  
JULISSA CHURATA-SALCEDO
Keyword(s):  
Morphological Analysis ◽  
Female Genitalia ◽  
Key To Species ◽  
Male And Female ◽  
Ladybird Beetles ◽  
Modern Classification

Malagasy Epilachnini are one of the least studied groups of the herbivorous ladybird beetles. Most of the species were described in the 19th and 20th centuries and their position within the modern classification has never been examined. Here we provide results of detailed study of two species Epilachna hovana Sicard, 1907 and Peralda quadriguttata, Sicard, 1909 which are proposed to be transferred to the genus Merma Weise (comb. nov.). Detailed morphological analysis, photographs of male and female genitalia and a key to species are also provided.  

scholarly journals Effects of Different Pretreatments of DNA Extraction from Dried Specimens of Ladybird Beetles (Coleoptera: Coccinellidae)

Insects ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 91
Author(s):  
Weidong Huang ◽  
Xiufeng Xie ◽  
Xinyue Liang ◽  
Xingmin Wang ◽  
Xiaosheng Chen
Keyword(s):  
Phylogenetic Analysis ◽  
Dna Extraction ◽  
Genetic Information ◽  
Phylogenetic Analyses ◽  
Museum Specimens ◽  
Sterile Water ◽  
Ladybird Beetles ◽  
Pretreatment Effects ◽  
Phosphate Buffered Saline

Obtaining genetic information from museum specimens is a fundamental component of many fields of research, including DNA barcoding, population genetics, conservation genetics, and phylogenetic analysis. However, acquiring genetic information from museum specimens is challenging because of the difficulty in amplifying the target sequences due to DNA damage and degradation. Different pretreatments can significantly impact the purity and concentration of genomic DNA from museum specimens. Here, we assessed four pretreatment methods—use of 0.9% NaCl buffer, phosphate-buffered saline (PBS), Saline Tris-EDTA (STE) buffer, and sterile water—to determine which pretreatment is most suitable for DNA extraction from dried specimens of ladybird beetles. We completed a comprehensive phylogenetic analysis to test whether the sequences obtained from dried specimens enable proper phylogenetic inference. Our results showed that pretreatment can improve the quality of DNA from dried specimens. The pretreatment effects of 0.9% NaCl buffer and STE buffer were better than those of PBS buffer and sterile water. The phylogenetic analyses results showed that museum specimens can be used to generate cogent phylogenetic inferences. We report the optimum pretreatment methods for DNA extraction from dried ladybird beetles specimens as well as provide evidence for accurately determining phylogenetic relationships for museum specimens.

Survival and behavioural responses of the predatory ladybird beetle, Eriopis connexa populations susceptible and resistant to a pyrethroid insecticide

2013 ◽  
Vol 103 (4) ◽  
pp. 485-494 ◽  
Author(s):  
A.F. Spíndola ◽  
C.S.A. Silva-Torres ◽  
A.R.S. Rodrigues ◽  
J.B. Torres
Keyword(s):  
Boll Weevil ◽  
Pyrethroid Insecticide ◽  
Anthonomus Grandis ◽  
Plant Canopy ◽  
Ladybird Beetle ◽  
Behavioural Responses ◽  
Ladybird Beetles ◽  
Resistant Population ◽  
Eriopis Connexa ◽  
Cotton Fields

AbstractThe ladybird beetle, Eriopis connexa (Germar) (Coleoptera: Coccinellidae), is one of the commonest predators of aphids (Hemiptera: Aphididae) in the cotton agroecosystem and in many other row and fruit crops in Brazil, and has been introduced into other countries such as the USA for purposes of aphid control. In addition, the boll weevil, Anthonomus grandis Boheman (Coleoptera: Curculionidae) is the most serious cotton pest where it occurs, including Brazil. Controlling boll weevils and other pests such as cotton defoliators still tends to involve the intense application of insecticides to secure cotton production. The pyrethroid insecticide lambda-cyhalothrin (LCT) is commonly used, but this compound is not effective against aphids; hence, a desirable strategy would be to maintain E. connexa populations in cotton fields where LCT is applied. Using populations of E. connexa resistant (Res) and susceptible (Sus) to LCT, we compared behavioural responses on treated cotton plants and under confinement on partially and fully treated surfaces, and assessed the insects' survival on treated plants compared with that of the boll weevil. The E. connexa resistant population caged on treated plants with 15 and 75 g a.i. ha−1 exhibited ≫82% survival for both insecticide concentrations compared with ≪3% and ≪17% survival for susceptible E. connexa populations and boll weevils, respectively. The response of E. connexa Res and Sus populations when released, either on the soil or on the plant canopy, indicated avoidance towards treated plants, as measured by elapsed time to assess the plant. When compared with susceptible individuals, resistant ones took longer time to suffer insecticide knockdown, had a higher recovery rate after suffering knockdown, and spent more time in the plant canopy. Based on behavioural parameters evaluated in treated arenas, no ladybird beetles exhibited repellency. However, irritability was evident, with the susceptible population exhibiting greater irritability compared with the resistant population and a subgroup comprising resistant individuals that had recovered from knockdown. The outcomes for the E. connexa Res population indicate a promising strategy for its maintenance when using the insecticide LCT in integrated pest management schemes to control boll weevil or other non-target pest of ladybird beetles in cotton fields.

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