Negative relationship between ambient temperature and death-feigning intensity in adult Callosobruchus maculatus and Callosobruchus chinensis

2008 ◽  
Vol 33 (1) ◽  
pp. 83-88 ◽  
Author(s):  
TAKAHISA MIYATAKE ◽  
KENSUKE OKADA ◽  
TOMOHIRO HARANO
Keyword(s):  
Ambient Temperature ◽  
Callosobruchus Maculatus ◽  
Negative Relationship ◽  
Callosobruchus Chinensis ◽  
Death Feigning

scholarly journals Sexual conflict and correlated evolution between male persistence and female resistance traits in the seed beetle Callosobruchus maculatus

2017 ◽  
Vol 284 (1855) ◽  
pp. 20170132 ◽  
Author(s):  
Liam R. Dougherty ◽  
Emile van Lieshout ◽  
Kathryn B. McNamara ◽  
Joe A. Moschilla ◽  
Göran Arnqvist ◽  
...  
Keyword(s):  
Sexual Conflict ◽  
Male Genitalia ◽  
Callosobruchus Maculatus ◽  
Negative Relationship ◽  
Female Reproductive Tract ◽  
Female Resistance ◽  
Correlated Evolution ◽  
Male And Female ◽  
Seed Beetle ◽  
Trade Offs

Traumatic mating (or copulatory wounding) is an extreme form of sexual conflict whereby male genitalia physically harm females during mating. In such species females are expected to evolve counter-adaptations to reduce male-induced harm. Importantly, female counter-adaptations may include both genital and non-genital traits. In this study, we examine evolutionary associations between harmful male genital morphology and female reproductive tract morphology and immune function across 13 populations of the seed beetle Callosobruchus maculatus . We detected positive correlated evolution between the injuriousness of male genitalia and putative female resistance adaptations across populations. Moreover, we found evidence for a negative relationship between female immunity and population productivity, which suggests that investment in female resistance may be costly due to the resource trade-offs that are predicted between immunity and reproduction. Finally, the degree of female tract scarring (harm to females) was greater in those populations with both longer aedeagal spines and a thinner female tract lining. Our results are thus consistent with a sexual arms race, which is only apparent when both male and female traits are taken into account. Importantly, our study provides rare evidence for sexually antagonistic coevolution of male and female traits at the within-species level.

Bioacoustic detection of Callosobruchus chinensis and Callosobruchus maculatus in bulk stored chickpea (Cicer arietinum) and green gram (Vigna radiata)

Food Control ◽  
2019 ◽  
Vol 104 ◽  
pp. 278-287 ◽  
Author(s):  
Km. Sheetal Banga ◽  
Nachiket Kotwaliwale ◽  
Debabandya Mohapatra ◽  
Saroj Kumar Giri ◽  
V. Bhushana Babu
Keyword(s):  
Cicer Arietinum ◽  
Vigna Radiata ◽  
Callosobruchus Maculatus ◽  
Green Gram ◽  
Callosobruchus Chinensis

Screening of cowpea [Vigna unguiculata (L.) Walp.] accessions against pulse-beetle, Callosobruchus chinensis (L.)

2015 ◽  
Vol 38 (5) ◽  
Author(s):  
Kuldeep Tripathi ◽  
Sumit Kumar Chauhan ◽  
Padmawati G. Gore ◽  
T. V. Prasad ◽  
Kalyani Srinivasan ◽  
...  
Keyword(s):  
Weight Loss ◽  
Positive Relationship ◽  
Growth Parameters ◽  
Negative Relationship ◽  
Growth Index ◽  
Adult Emergence ◽  
Callosobruchus Chinensis ◽  
Local Variety ◽  
Development Period ◽  
Pulse Beetle

A total of 52 accessions of cowpea including two checks (Pusa Komal and Local variety) were screened for resistance to pulse beetle, <italic>Callosobruchus chinensis</italic> under no-choice artificial infestation conditions. There were significant differences among the accessions in terms of number of eggs laid, development period, adult emergence, number of emergence holes, weight loss and growth index of <italic>C. chinensis</italic> on cowpea. Based on growth indices, Pusa Komal (0.04081) and IC328859 (0.04112) were resistant while IC106033 (0.06819) and Local variety (0.06816) were most susceptible to <italic>C. chinensis</italic>. Of the 52 accessions screeened, 11 accessions were resistant, 15 moderately resistant, 13 moderately susceptible, 8 susceptible and 5 were highly susceptible to <italic>C. chinensis.</italic> Correlation between growth index and growth parameters of pulse beetle on different cowpea accessions indicated that growth index had significant negative relationship with mean development period (r = -0.68) and significant positive relationship with adult emergence(r = +0.80). Adult emergence had a positive relationship with weight loss (r = +0.22).

Searching for resistance in wild Lens species against pulse beetle, Callosobruchus chinensis (L.)

2015 ◽  
Author(s):  
Padmavati G Gore ◽  
K Tripathi ◽  
S K Chauhan ◽  
Mohar Singh ◽  
I S Bisht ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Negative Relationship ◽  
Growth Index ◽  
Adult Emergence ◽  
Egg Laying ◽  
Callosobruchus Chinensis ◽  
Sources Of Resistance ◽  
Development Period ◽  
Artificial Infestation ◽  
Pulse Beetle

A total of 51 accessions of different Lens spp. viz., Lens culinaris (cultivated) and L. culinaris subsp. odemensis, L. culinaris subsp. orientalis, L. orientalis, L. nigricans, L. lamottei and L. ervoides (wild species) were screened for their reaction to Callosobruchus chinensis under no-choice artificial infestation conditions to find the sources of resistance. Significant differences among the accessions in terms of number of eggs laid, development period, adult emergence, number of emergence holes of C. chinensis loss in seed weight on different Lens spp. were observed. Of the seven species tested, L. culinaris was the most preferred one for egg laying while L. ervoides was the least preferred. Based on Growth Index (GI), accessions were categorised as highly resistant (15 accessions, GI = 0.00), resistant (14, GI=0.00 to 1.00), moderately resistant (16, GI=1.01 to 2.00) moderately susceptible (3, GI 2.01 to 3.00) susceptible (3, >3.01) to C. chinensis and the species have been arranged in the order of their resistance to C. chinensis. viz L. ervoides > L. lamottei > L. nigricans= L. orientalis > L. culinaris subsp. orientalis= L. culinaris subsp. odemensis > L. culnaris, i.e. L. ervoides was highly resistant and L. culnaris was the most susceptible. Correlation between GI and growth parameters of pulse beetle on different Lens spp. accessions indicated that GI had negative relationship with mean development period (-0.22) and significant positive relationship with adult emergence (+0.73), weight loss (+0.77) and eggs laid (+0.75).

scholarly journals Evaluation of the Susceptibility of the Seeds of Four Varieties of Vigna unguiculata against Callosobruchus maculatus Infestations

2019 ◽  
pp. 1-12
Author(s):  
Mala Tankam C. M. ◽  
Kekeunou Sevilor ◽  
Olina Bassala J. P. ◽  
Nukenine Nchiwan E.
Keyword(s):  
Weight Loss ◽  
Callosobruchus Maculatus ◽  
Agricultural Research ◽  
Negative Relationship ◽  
Growth Index ◽  
Adult Emergence ◽  
Physical Characteristics ◽  
Susceptibility Index ◽  
Cowpea Varieties ◽  
Index Weight

Introduction: Post-harvest conservation remains a major challenge for most crops in developing countries. Among these is Cowpea one of the major legumes grown and consumed in the tropics and subtropics of countries. Callosobruchus maculatus infestations constitute are the most prominent threat for this particular crop. Objective: The present research aimed at evaluating the susceptibility of four cowpea varieties against infestations of C. maculatus. Place and Duration of Study: The study was conducted at the entomology laboratory of the cowpea section of the Regional Center for Agricultural Research of Maroua from November to December 2018. Methodology: The experiments were carried out based on the factorial experiment by randomized complete design with five replications. 40 seeds of each variety were put in contact with 5 pairs of bruchids. Results: The results show that the four cowpea varieties evaluated have different physical characteristics of the seeds. This variability would play an important role in inducing the ovipositional response of C. maculatus females. However, it is not enough on its own to explain the various degree of susceptibility to C.maculatus infestations. There was a positive perfect correlation between the number of adult emergence, growth index, weight loss, number of holes and Dobie susceptibility index. Also, BR-1 was found to be more resistant to C. maculatus followed by Lori-niébé, Vya and least resistance was observed in the Borno brown. The multiple regression analysis reveals that there is a negative relationship between mortality rate of developmental stages, weight loss, F1 offspring production, and seed susceptibility. Conclusion: The physical characteristics of the four cowpea varieties tested to affect the susceptibility of the grain to beetle attacks. A number of adult emergence, growth index, weight loss, and susceptibility index are the main indicators for the resistance of cowpea to C. maculatus damage. An analysis of the amino acids contained in the BR-1 is recommended for the introgression of its resistance alleles in susceptible varieties.

scholarly journals Susceptibility of different life stages of Callosobruchus maculatus and Callosobruchus chinensis to ECO2FUME gas and its impact on cowpea seeds quality

2021 ◽  
Author(s):  
Manar Y. Amin ◽  
Abeer Omar Abotaleb ◽  
Refaat A. Mohamed
Keyword(s):  
Callosobruchus Maculatus ◽  
Developmental Stages ◽  
Chemical Constituents ◽  
Application Rate ◽  
Insect Species ◽  
Callosobruchus Chinensis ◽  
Life Stages ◽  
Post Exposure ◽  
Cowpea Seeds ◽  
Fume Suppression

Abstract ECO2FUME® phosphine fumigant was used to fumigate stored cowpea piles under gas-proof sheets to assess its performance against different developmental stages of Callosobruchus maculatus and Callosobruchus chinensis. The mortality was determined on four developmental stages of C. maculatus and C. chinensis, employing ECO2FUME at different concentrations 25, 30, 40, and 50 g/m3 (2% PH3 and 98% CO2 by weight) for 3-days. All stages of both insect species in packed cowpea stacks were completely controlled at 3-days when applied with an ECO2FUME application rate of 50 g/m3. Cases of pupae of C. maculatus and C. chinensis exhibit the highest resistance than other stages, with 78.2 and 73.93% mortality respectively, at 40 g/m3 after 3-days post-exposure to ECO2FUME. Suppression of F1 generation was obtained after fumigation with the same concentration (50 g/m3). Quality (in terms of cowpea germination) and all chemical constituents of cowpea seeds were non significantly (P ≤ 0.05) affected by the fumigation concentration of 50 g/m3.

scholarly journals Βιολογία και Καταπολέμηση Ειδών Βρούχων που απαντώνται στην Ελλάδα

2021 ◽  
Author(s):  
Γεώργιος Φλώρος
Keyword(s):  
Callosobruchus Maculatus ◽  
Callosobruchus Chinensis ◽  
Acanthoscelides Obtectus ◽  
Bruchus Pisorum

Οι βρούχοι είναι έντομα της τάξης των Κολεοπτέρων που προσβάλλουν σπόρους ψυχανθών, τόσο στον αγρό, όσο και στην αποθήκη. Αποτελούν σημαντικούς εχθρούς των αποθηκευμένων οσπρίων παγκοσμίως καθώς οι προσβεβλημένοι σπόροι χάνουν εμπορική του αξίας αλλά και την βλαστικότητα. Αντικείμενο έρευνας της παρούσας διατριβής, αποτέλεσε η αναγνώριση ειδών βρούχων που απαντώνται ανά την Ελλάδα και η αξιολόγηση νέων φιλικών προς το περιβάλλον και τον άνθρωπο ουσιών, ως μέσων αντιμετώπισης των βρούχων. Στην πρώτη σειρά πειραμάτων συλλέχθηκαν από 6 περιοχές της Ελλάδας 5530 άτομα που ταξινομήθηκαν σε 5 διαφορετικά είδη βρούχων και μαζί με αυτά 1 είδος παρασιτοειδούς υμενοπτέρου. Από τα δείγματα μας αναγνωρίστηκαν τα είδη Bruchus pisorum (σε συχνότητα 57.2%), Acanthoscelides obtectus (σε συχνότητα 10.8%), Bruchus rufimanus (σε συχνότητα 12.8%) και τα Callosobruchus chinensis και Callosobruchus maculatus (σε συχνότητα 5,6%). Στη δεύτερη σειρά πειραμάτων αξιολογήθηκε η εντομοκτόνος δράση ορισμένων αδρανών σκονών για την αντιμετώπιση του βρούχου των φασολιών. Αξιολογήθηκε, η εντομοκτόνος δράση ζεόλιθου ελληνικής προέλευσης σε ενήλικα του βρούχου των φασολιών A. obtectus και βρέθηκε ότι η μέση θανατηφόρος δόση ήταν 1.1 g ζεόλιθου ανά κιλό σπόρων φασολιού. Η εντομοκτόνος δράση του ζεόλιθου βρέθηκε να μην επηρεάζεται από τη θερμοκρασία και σχετική υγρασία. Επιπλέον, αξιολογήθηκε η δράση του καολίνη, της γης των διατόμων και ενός ιταλικής προέλευσης ζεόλιθου, σε ενήλικα άτομα του A. obtectus. Βρέθηκε ότι, με συγκέντρωση 5 g αδρανούς σκόνεως ανά κιλό σπόρων φασολιών προκαλείται ποσοστό θνησιμότητας >80% σε 48 ώρες μετά την εφαρμογή. Επιπλέον, βρέθηκε ότι ζεόλιθοι διαφορετικής προέλευσης και ορυκτολογικής σύστασης, όταν εφαρμόστηκαν σε σπόρους φασολιών προκάλεσαν 100% θνησιμότητα σε προνύμφες του A. obtectus. Σε συνεργασία με το Τμήμα Γεωλογίας του Α.Π.Θ., έγιναν οι ορυκτολογικές και χημικές αναλύσεις των ζεολιθικών πετρωμάτων που χρησιμοποιήθηκαν. Σε μία τρίτη σειρά πειραμάτων, αξιολογήθηκε η εντομοκτόνος δράση ατμών από καύση και θέρμανση επεξεργασμένου καπνού τσιγάρων. Στα πειράματα αυτά ενήλικα άτομα του A. obtectus εκτέθηκαν σε καπνό που προερχόταν από τσιγάρα. Ο καπνός παράχθηκε είτε από καύση (τσιγάρο τύπου στριφτού) είτε από θέρμανση (τσιγάρο τύπου iqos). Βρέθηκε ότι, όταν ενήλικα άτομα του A. obtectus εκτέθηκαν για 3 μέρες σε συγκέντρωση 40% ατμού από καύση ή θέρμανση καπνού, προκλήθηκε αντίστοιχα θνησιμότητα περίπου 80% και 30%, αντίστοιχα. Τα αποτελέσματα των πειραμάτων μας, συμβάλλουν στη γνώση της παρουσίας των βρούχων στον ελλαδικό χώρο και στην ανάπτυξη καινοτόμων μεθόδων αντιμετώπισης.

scholarly journals Efficacy of natural oils against the biological activity on Callosobruchus maculatus and Callosobruchus chinensis (Coleoptera: Tenebrionidae)

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
Magda Mahmoud Amin Sabbour
Keyword(s):  
Essential Oils ◽  
Callosobruchus Maculatus ◽  
Insect Pests ◽  
Adult Emergence ◽  
Effective Dosage ◽  
Callosobruchus Chinensis ◽  
Storage Pests ◽  
Plant Essential Oils ◽  
Natural Oils ◽  
Coleoptera Tenebrionidae

Abstract Background Callosobruchus maculatus and C. chinensis (Coleoptera: Tenebrionidae) are dangerous insects to stored grains. They are controlled by chemical insecticides, which cause a lot of harmful diseases and pollute the environment. Essential oils are a new trend for controlling of storage pests. Methods The nano-encapsulation process was carried out by polymerization technology. The tested nano-oils were experimented at tested concentration (0.5%) for their insecticidal activities against the third-instar larvae of tested insects. After 7 days of exposure, accumulative mortality percentages were calculated in the treated and untreated control. Also, the tested nano-oils were sprayed to the foam granules and were mixed with 2 g foam/100 g cow pea for testing the oviposition inhibitory effects of the tested oils. Additionally, the experiment was designed to test the latent effect of the tested oils against C. maculatus and C. chinensis on foam as surface protectant after 90-day intervals. Results After 7 days of treatments, the accumulations of C. maculatus were 61.2, 42.0, 46.6, and 35.5% after being treated with rosemary, catnip, garlic, and citronella oil, respectively, as compared to 0.3% in the control. When C. chinensis were treated with corresponding oils, the accumulations obtained 68.9, 44.1, 49.9, and 37.9% as compared to 0.1% in the control. When both the target insect pests, C. maculatus and C. chinensis, were treated with the tested nano-oils, results showed that the accumulations of C. maculatus recorded 82.2, 55.8, 66.3, and 46.3% when treated with nano-rosemary, nano-anis, nano-garlic, and nano-citronella as compared to 0.1 in the control. When the corresponding nano-oils were applied against C. chinensis, the accumulations obtained 89.7, 42.8, 70.9, and 48.9% as compared to 0.1% in the control. When the tested oils and their nano were tested against C. maculatus life cycle, the number of eggs laid/female were significantly decreased to 6.4 ± 9.89 eggs/female after nano-rosemary treatments as compared to 299.9 ± 9299 eggs/female in the control. The adult emergence decreased to 1% after nano-rosemary treatments as compared to 100% in the control. The malformations of the insect significantly increased after nano-rosemary and nano-anis to 100% as compared to 0% in the control. The same results obtained when C. chinensis were treated with different tested oils. The number of eggs C. chinensis laid/female was 8.3 ± 1.0 eggs/female as compared to 298.9 ± 7.89 eggs/female in the control. Conclusion This work research indicate that some essential oils might be useful for managing C. maculatus and C. chinensis in enclosed spaces because of their fumigant harmful action. Plant essential oils and their active ingredient have potentially high bioactivity against a range of the target insect pests. Furthermore, they are highly selective to C. maculatus and C. chinensis. Incorporation of essential oils into a controlled release nano-formulation prevents rapid vaporization and degradation, increases constancy, and preserves the lower effective dosage/application. Treated foam with nano-rosemary and nano-garlic oils and covering gunny bags provided many efficient effects against tested insects.

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