Enzymatic differences in the digestive system of the adult and larva of Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae)

Vázquez-Arista, M.; Smith, Robert H.; Martínez‐Gallardo, Norma; Blanco‐Labra, Alejandro

doi:10.1016/s0022-474x(98)00042-3

Cited by 13 publications

(3 citation statements)

References 26 publications

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“…The insects can change enzymatic activity when they encounter unfavorable conditions that may directly influence their resistance to these conditions ( Terriere 1984 , Konarev 1996 ). Vazquez-Arista et al (1999) reported that variations in digestive enzymatic activity of three colonies of Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae) from three geographic regions might be attributed to the genetic adaptation of the insect with different environmental conditions. These variations in enzymatic activity, in our study, might be attributed to the adaptation with environmental conditions or their regional host plant, where larvae were collected.…”

Section: Discussionmentioning

confidence: 99%

Geographic Origin and Host Cultivar Influence on Digestive Physiology ofSpodoptera exigua(Lepidoptera: Noctuidae) Larvae

2017

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Digestive enzymatic activity in three geographic strains (Miandiab, Kalposh and Moghan regions) of Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) reared on different sugar beet cultivars (Dorothea, Rozier, Persia and Perimer) was studied under laboratory conditions (25 ± 1 °C, 65 ± 5% RH, and a photo period of 16:8 (L:D) h photoperiod). The results of this study demonstrated that digestive protease and amylase activity of S. exigua larvae was affected by both geographic origin of the pest and host plant cultivar. Three strains reared on the same sugar beet cultivars demonstrated different levels of proteolytic and amylolytic activities in fourth and fifth instars. The highest proteolytic and amylolytic activity, in most cases, was observed in larvae collected from Kalposh region. Among different sugar beet cultivars, the highest protease activity in three strains was observed on cultivars Rozier and Perimer. Nevertheless, the highest amylase activity was seen on cultivar Dorothea, and the lowest activity was seen on cultivar Rozier. This study suggested that variations in digestive enzymatic activity of three geographic strains of S. exigua might be attributed to local adaptation with their local host plant and environmental conditions inherent by larvae.

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Section: Discussionmentioning

confidence: 99%

Geographic Origin and Host Cultivar Influence on Digestive Physiology ofSpodoptera exigua(Lepidoptera: Noctuidae) Larvae

2017

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“…Anecdotal reference to the existence of ecotypes of the pest P. truncatus has been made (Guntrip et al ., 1996; Vasquez-Arista et al ., 1999) but genetic evidence is lacking. It is suggested that the ability of the predator in maintaining an association with its prey in the new environment as in its native range would depend on matching ecotypes of the two (Omwega & Overholt, 1996; Lloyd et al ., 2003; Roderick & Navajas, 2003).…”

Section: Discussionmentioning

confidence: 99%

Molecular markers reveal narrow genetic base and culturing-associated genetic drift inTeretrius nigrescensLewis populations released for the biological control of the larger grain borer in Africa

Omondi

Berg

Masiga

et al. 2013

Bull. Entomol. Res.

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In biological control, successful establishment of a natural enemy species depends on its adaptability in the introduced range including its ability to re-establish desired ecological interactions with the pest. These are affected by genetic parameters hitherto largely unresolved in biological control. The larger grain borer (LGB), Prostephanus truncatus, an invasive species from meso-America, is the most important post-harvest pest of maize in Africa. We studied the genetic structure of Teretrius nigrescens, a predatory beetle previously released for the control of the pest in Africa, to test the hypothesis that establishment patterns were a result of ecotype-environment mismatch and to follow up on our earlier reports of distinct lineages of the predator. We studied 13 populations of T. nigrescens, using 16 polymorphic microsatellite markers. Five genetic populations with a hierarchical structure and significant isolation by distance were detected. The most diverse population was found in southern Mexico, consistent with earlier lineage coexistence observations. Populations introduced to Africa maintained genetic similarity to local geographic populations of their area of origin. The more successful Benin releases were also more genetically diverse. Loss of rare alleles and a higher frequency of existing private alleles in some populations indicated population expansions following bottleneck events. Sustainable biological control should accommodate pest and natural enemy species, and monitor genetic changes associated with introduction and release.

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“…and Strychnos spinosa Lam, and fresh and dry grass stems of species, including Pennisetum glaucum (L.) R. Br, Hyparrhenia hirta (L.) Stapf, Acroceras macrum Stapf, Digitaria eriantha Steud and Aristida congesta Roem and Schult [ 200 , 201 ]. The beetle possesses α-amylase and proteases which aid in the digestion of a wide variety of diets, including hard woody material [ 202 , 203 , 204 ]. The species attributes of S. frugiperda and P. truncatus that aid their invasiveness are summarised in Table 1 .…”

Section: Biological Invasions: Donors Drivers and Processes Involvedmentioning

confidence: 99%

The Fall Armyworm and Larger Grain Borer Pest Invasions in Africa: Drivers, Impacts and Implications for Food Systems

Mlambo,

Mubayiwa,

Tarusikirwa

et al. 2024

Biology

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Invasive alien species (IAS) are a major biosecurity threat affecting globalisation and the international trade of agricultural products and natural ecosystems. In recent decades, for example, field crop and postharvest grain insect pests have independently accounted for a significant decline in food quantity and quality. Nevertheless, how their interaction and cumulative effects along the ever-evolving field production to postharvest continuum contribute towards food insecurity remain scant in the literature. To address this within the context of Africa, we focus on the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), and the larger grain borer, Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae), two of the most important field and postharvest IAS, respectively, that have invaded Africa. Both insect pests have shown high invasion success, managing to establish themselves in >50% of the African continent within a decade post-introduction. The successive and summative nature of field and postharvest damage by invasive insect pests on the same crop along its value chain results in exacerbated food losses. This systematic review assesses the drivers, impacts and management of the fall armyworm and larger grain borer and their effects on food systems in Africa. Interrogating these issues is important in early warning systems, holistic management of IAS, maintenance of integral food systems in Africa and the development of effective management strategies.

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Enzymatic differences in the digestive system of the adult and larva of Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae)

Cited by 13 publications

References 26 publications

Geographic Origin and Host Cultivar Influence on Digestive Physiology ofSpodoptera exigua(Lepidoptera: Noctuidae) Larvae

Geographic Origin and Host Cultivar Influence on Digestive Physiology ofSpodoptera exigua(Lepidoptera: Noctuidae) Larvae

Molecular markers reveal narrow genetic base and culturing-associated genetic drift inTeretrius nigrescensLewis populations released for the biological control of the larger grain borer in Africa

The Fall Armyworm and Larger Grain Borer Pest Invasions in Africa: Drivers, Impacts and Implications for Food Systems

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