Life attributes of<i>Zygogramma bicolorata</i>Pallister (Coleoptera: Chrysomelidae): challenges and future directions

Patel, Priya; Bhusal, Daya Ram; Kumar, Bhupendra; Kumar, Dinesh

doi:10.1080/09583157.2019.1694636

Cited by 6 publications

(5 citation statements)

References 46 publications

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“…In addition to Z. bicolorata , coccinellid predators (Coleoptera: Coccinellidae) have also been reported from P. hysterophorus (Kumar et al 2017), and when this condition occurs, feeding stages of Z. bicolorata perceived the heterospecific chemicals of coccinellid predators on the leaves of Parthenium plant and reject to consume these leaves where semiochemical footprints were present. This confirms that interspecific interactions between Z. bicolorata and coccinellid predators hinder biocontrol of Parthenium by Z. bicolorata (Patel et al 2020a).…”

Section: Karyotypic and Morphometric Analysissupporting

confidence: 75%

“…The body itself is off-white in colour, the appendages are dark brown, the pronotum has off-white patches at the anterior edges, and the elytra have undulating dark-brown longitudinal markings (Jayanth and Bali 1993a; Siddhapara et al 2012). The posterior edge of the last visible abdominal ventrite is complete in females, whereas the tip is somewhat serrated in males (Patel et al 2020a). Males have a faint depression at the middle of their last abdominal sternite (Siddhapara et al 2012) and larger antennomeres and more abundant sensilla basiconica than are found in the females (Qadir and Qamar 2019).…”

Section: Morphological Characteristicsmentioning

confidence: 99%

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Zygogramma bicolorata (Coleoptera: Chrysomelidae): an exotic biocontrol agent of the noxious weed, Parthenium hysterophorus (Asteraceae)

Afaq,

Kumar,

Siddiqui

et al. 2024

Can Entomol

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Parthenium hysterophorus Linnaeus (Asteraceae), commonly known as “congress grass,” is among the 10 worst weeds of India and is considered one of the world’s 100 most harmful invasive species. This species has been introduced accidentally into several countries, including India, and is a major agricultural and rangeland weed in more than 45 countries. It affects crop production, suppressing biodiversity, crop yields, the health of farm animals and human beings, and local and regional economies. Biological control has been found to be a cost-effective management strategy to control the weed, with the leaf beetle, Zygogramma bicolorata Pallister (Coleoptera: Chrysomelidae), considered an effective and safe biocontrol agent. Several studies have investigated the beetle’s biology, reproduction, and other life attributes. This review compiles the existing information about Z. bicolorata biology, growth, development, reproduction, food, and host specificity, and the effects of abiotic and biotic stressors on the insect’s life attributes. We anticipate that this review will helpful for improving strategies for this bioagent’s swift mass rearing and for developing classical biological control design for Parthenium weed.

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Section: Karyotypic and Morphometric Analysissupporting

confidence: 75%

Section: Morphological Characteristicsmentioning

confidence: 99%

Zygogramma bicolorata (Coleoptera: Chrysomelidae): an exotic biocontrol agent of the noxious weed, Parthenium hysterophorus (Asteraceae)

Afaq,

Kumar,

Siddiqui

et al. 2024

Can Entomol

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“…In the present study, the higher food consumption rates of Z. bicolorata adults during their early and middle ages may be due to their high energy needs for initiating the gonadal development and attaining the sexual maturity, since the quantity of food influences the rate of development, reproductive output and fitness in Z. bicolorata adults (Chidawanyika et al, 2017; Patel, Bhusal, et al, 2020). Furthermore, except for the unmated females, the decreased food consumption rates of Z. bicolorata adults at an older age may be due to the process of ageing, characterized by reduced assimilation of food, decline in reproductive potential and decreased mobility (Dixon & Agarwala, 2002; Mishra et al, 2012).…”

Section: Discussionmentioning

confidence: 73%

“…Ageing not only reduces the physiological integrity of structures and functions in insects (López‐Otín et al, 2013) but also affects the distribution of triglycerides, proteins and glucose in their body (Baumann & Chen, 1968; Butterworth & Bodenstein, 1968) and, consequently, their reproductive output. Studies assessing reproductive output in the Parthenium beetle, Zygogramma bicolorata Pallister have revealed that females that mate at an early or middle age have higher fecundity, longer oviposition periods and maximum life span than the females that mate at a later age (Omkar et al, 2010; Patel, Bhusal, et al, 2020). The offspring of such females also develop faster and survive longer than those of old females (Pandey & Omkar, 2013).…”

Section: Introductionmentioning

confidence: 99%

Ageing and mating status affect food utilization efficiencies and assimilation of macronutrients in adults of Parthenium beetle, Zygogramma bicolorata Pallister

Yadav,

Patel,

Patel

et al. 2024

Physiological Entomology

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Investigations of age‐based food conversion and utilization efficiencies in phytophagous insects are very few. Studies examining the effects of age, sex and mating status on biochemical assimilation of macronutrients by phytophagous insects are scarce as well. Hence, we designed the present study to evaluate the combined effect of age, sex and mating status on food consumption and utilization efficiencies, and the assimilation of macronutrients by the Parthenium beetle, Zygogramma bicolorata Pallister (Coleoptera: Chrysomelidae), on the invasive weed, Parthenium hysterophorus Linnaeus (Asterales: Asteraceae). We hypothesized that mated adults would consume and utilize more food than unmated adults, that assimilation of nutrients by old adults would be lower than young adults and that females would consume and utilize food more efficiently than males. However, our results revealed that as adults aged, their food consumption and utilization efficiencies decreased, and they assimilated less proteins and glucose in their body. Despite that, their mean body biomass and assimilation of triglycerides increased. While mated adults had higher food utilization efficiencies and increased assimilation of triglycerides and glucose, unmated adults assimilated more proteins. Females had higher food consumption rates and increased assimilation of nutrients, whereas males had higher food conversion efficiencies and growth rates. Furthermore, middle‐aged adults had higher food utilization efficiencies and they assimilated more nutrients than young and old adults. Our results therefore suggest compensatory feeding in adults of Z. bicolorata with ageing. We also recommend the release of more numbers of mated middle‐aged females to control P. hysterophorus in agro‐ecosystems.

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“…18 This implies that the bioagent is florivorous in nature at both the larval and adult stages and is a voracious defoliator of the weed, which enhances its susceptibility to biotic factors. 21,22 It was understood that the plants that were not infested by the beetles continued and flourished in their growth stages, while others dried up (Figure 6A-D).…”

Section: Number Of Larvae Emerged Per Plantmentioning

confidence: 99%

Effectiveness of Zygogramma bicolorata Pallister (Coleoptera: Chrysomelidae) on Parthenium weed (Parthenium hysterophorus) under greenhouse condition in Ethiopia

Gutema,

Edosa,

Achlehum

et al. 2024

F1000Res

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Background Parthenium is an invasive annual weed that affects crop production, rangelands, grasslands, animals, the environment, and human health. Since its introduction into Ethiopia, different management options such as uprooting, slashing, burning, plowing, and applying synthetic herbicides have been practiced. However, these options are not sustainable in weed management. However, Zygogramma bicolorata is known to be used in different countries. Although many countries use it under field conditions, its population-based efficacy has not been well studied in Ethiopia. This study aimed to determine the effectiveness of Z. bicolorata populations on parthenium plants under greenhouse conditions. Methods This experiment was conducted at the Ambo Agricultural Research Center. Different numbers of Z. bicolorata per plant were used as treatments and were laid out in a completely randomized design with three replications. The numbers of damaged leaves, eggs, and larvae were recorded daily until the leaves were completely defoliated. The collected data and the correlation between beetle population and leaf defoliation were analyzed using SAS. Results The result revealed that all beetle populations caused damage to weed plants. A higher population of beetles completely defoliated the leaves within 12 days. However, lower numbers required 21 days to completely defoliate the weed. In contrast, a higher number of eggs (328.67) and larvae (272.33) were obtained from plants that received 20 pairs of beetles. The beetle population and exposure time were positively correlated, and the effectiveness of the bioagent was greater following the emergence of larvae. Conclusions Z. bicolorata can manage parthenium weeds, even with a lower population. However, more than 15 pairs of beetles could be suggested to manage weeds in a shorter time, and further study is needed under field conditions by considering the different agroecologies of the country.

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Life attributes ofZygogramma bicolorataPallister (Coleoptera: Chrysomelidae): challenges and future directions

Cited by 6 publications

References 46 publications

Zygogramma bicolorata (Coleoptera: Chrysomelidae): an exotic biocontrol agent of the noxious weed, Parthenium hysterophorus (Asteraceae)

Zygogramma bicolorata (Coleoptera: Chrysomelidae): an exotic biocontrol agent of the noxious weed, Parthenium hysterophorus (Asteraceae)

Ageing and mating status affect food utilization efficiencies and assimilation of macronutrients in adults of Parthenium beetle, Zygogramma bicolorata Pallister

Effectiveness of Zygogramma bicolorata Pallister (Coleoptera: Chrysomelidae) on Parthenium weed (Parthenium hysterophorus) under greenhouse condition in Ethiopia

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