Latitudinal Pigmentation Variation Contradicts Ultraviolet Radiation Exposure: A Case Study in Tropical Indian Drosophila melanogaster

Rajpurohit, Subhash; Schmidt, Paul S.

doi:10.3389/fphys.2019.00084

Cited by 11 publications

(7 citation statements)

References 27 publications

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“…However, the older larvae were somewhat less sensitive and 100% mortality was not achieved with 12 h of exposure. The irradiated larvae were inactive, stopped growing, and had a dark black body color upon death, exhibiting symptoms that were similar to that of sunburns in humans because of solar radiation (Rajpurohit and Schmidt, 2019). In general, the larval and pupal mortalities were directly proportional to exposure times and present results in support with the findings of Faruki et al (2005).…”

Section: Discussionmentioning

confidence: 98%

Prediction of survival ratios of Cadra cautella (Lepidoptera: Pyralidae) different life stages after treated with ultraviolet radiation in dates

Alwaneen

Husain

Rasool

et al. 2019

Saudi Journal of Biological Sciences

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Date palm, is a tree of economic importance which is grown around the world, including Saudi Arabia. Its fruit is nutritious and possesses medicinal benefits. Almond moth, is a serious date fruits pest in the field as well as in the storage and causes severe economic losses. In the given research, ultraviolet radiation type B (UV-B, 315 nm) harmful effects were evaluated against all developmental stages of C. cautella. One and 3-d-old eggs, 12 and 18-d-old larvae, 1-d and 6-d-old pupae, and 1-d-old adults, were exposed to UV-B for different intervals. Eggs were exposed for 0–30 min and 0% hatchability was achieved both for 1-d and 3-d-old eggs after 30 min. The larvae were exposed for 6–24 h, and after 24 h, mortality was 100 and 97% for 12 and 18-d-old larvae, respectively. Similarly, the pupae were exposed for 0–30 h, and 100% mortality was achieved after 30 h for 1-d-old pupae. Furthermore, none of the 6-d-old pupae emerged as an adult after 12 h of exposure. When adults were exposed for 1–4 d, no mortality was observed; however, UV-B reduced fecundity and hatchability in the treated adults. The susceptibility order was as follows: eggs > larvae > pupae > adults. Several uncharacteristic behaviors of C. cautella were noted, such as females depositing eggs openly on food items and containers, mature larvae exiting from food, larvae starting to wander for pupation, and pupation occurring typically outside the food. The application of UV-B could be an effective management strategy because all developmental stages of C. cautella were susceptible to UV-B that might be helpful to protect the dates from C. cautella infestation.

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Section: Discussionmentioning

confidence: 98%

Prediction of survival ratios of Cadra cautella (Lepidoptera: Pyralidae) different life stages after treated with ultraviolet radiation in dates

Alwaneen

Husain

Rasool

et al. 2019

Saudi Journal of Biological Sciences

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“…Insects mortality ratio enhance with rising UV-B light time. After exposed larvae on UV-B light larvae was found immobile, stopped their development, and have a dark black body color upon death, showing signs that was same to the sunburns in human due to solar (Rajpurohit and Schmidt, 2019). A significantly declined adult's emergence from irradiated pupae was found by (Hassan and Khan, 1998;Faruki et al, 2007;Ali et al, 2016).…”

Section: Resultsmentioning

confidence: 86%

Function of Ultraviolet Radiation (UV-B) Light on the Survival of Red Flour Beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) and their Body Fitness

Khan¹,

Ali²,

Memon³

et al. 2021

PJAR

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R ed flour beetle (Tribolium castaneum) (Herbst) (Coleoptera: Tenebrionidae) is the major and a worldwide distribution insect pest in store grain that causes quantitative and qualitative damages to flour by feeding. T. castaneum is the most widespread pest in flour mills, warehouses and grocery stores (Garcia et al., 2005; Padin et al., 2002). Losses of grain estimated that post-harvest grain losses exceed $500 million annually and most of the losses are results of organism source such as insects or mycotoxin (Harein Abstract | Red flour beetle, Tribolium castaneum (Herbst) is a key insect pest of stored grain. Using radiation is an established method for controlling insect pests in store-grain and a significant stress factor affecting stored grain pests. The Present research work was designed to control T. castaneum through ultraviolet radiation (UV-B 313 nm) light is applied at various timings such as 0, 5, 10, 20, 40 and 60 minutes UV-B light on all developmental stages of T. castaneum. The results revealed that significant mortality was observed in eggs, larvae and pupal stage at all given timings of UV-B light compared with control. Incubation period of eggs, developmental period of larvae and pupae gradually increased as increasing exposure time of UV-B light. Statistically, no significant difference was observed between 5 minutes UV-light and control group on the incubation period of eggs and larval stages. Significantly, adult longevity of T. castaneum was reduced at all given timings of UV-B light as compared to control. However, a significant weight reduction was noticed on larvae, pupae and adult stages from 20, 40 and 60 minutes UV-B light as compared to control. Whereas no statistical difference was observed using 5 and 10 minutes UV-B light as compared with control. Use of UV-B light is a helpful technique for the management of T. castaneum because we found that all developmental stages of T. castaneum showed susceptibility on UV-B light that may be useful for the protection of stored grain products from T. castaneum infestation.

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“…For the majority of genotypes we analyzed, lower developmental temperatures produced darker bodies (Figure 2B). Darker flies have been shown to have better light absorption (Freoa et al 2023) and better protection against UV radiation (Bastide et al 2014, but see Rajpurohit et al 2019). However, some genotypes had no thermal plasticity (no difference in phenotype across temperatures) and a few had even inverted plasticity (with darker bodies at higher temperatures).…”

Section: Discussionmentioning

confidence: 99%

Genetic basis of variation in thermal developmental plasticity forDrosophila melanogasterbody pigmentation

Lafuente,

Duneau,

Beldade

2023

Preprint

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Seasonal differences in insect pigmentation are attributed to the influence of ambient temperature on pigmentation development. This thermal plasticity is adaptive and heritable, thereby capable of evolving. However, the specific genes contributing to the variation in plasticity that can drive its evolution remain largely unknown. To address this, we analyzed pigmentation and pigmentation plasticity inDrosophila melanogaster. We measured two components of pigmentation in the thorax and abdomen: overall darkness and the proportion of length covered by darker pattern elements (a trident in the thorax and bands in the abdomen) in females from two developmental temperatures (17°C or 28°C) and 191 genotypes. Using a GWAS approach to identify the genetic basis of variation in pigmentation and its response to temperature, we identified numerous dispersed QTLs, including some mapping to melanogenesis genes (yellow,ebony, andtan). Remarkably, we observed limited overlap between QTLs for variation within specific temperatures and those influencing thermal plasticity, as well as minimal overlap between plasticity QTLs across pigmentation components and across body parts. For most traits, consistent with selection favoring the retention of plasticity, we found that lower plasticity alleles were often at lower frequencies. The functional analysis of selected candidate QTLs and pigmentation genes largely confirmed their contributions to variation in pigmentation and/or pigmentation plasticity. Overall, our study reveals the existence and underlying basis of extensive and trait-specific genetic variation for pigmentation and pigmentation plasticity, offering a rich reservoir of raw material for natural selection to shape the independent evolution of these traits.

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Latitudinal Pigmentation Variation Contradicts Ultraviolet Radiation Exposure: A Case Study in Tropical Indian Drosophila melanogaster

Cited by 11 publications

References 27 publications

Prediction of survival ratios of Cadra cautella (Lepidoptera: Pyralidae) different life stages after treated with ultraviolet radiation in dates

Prediction of survival ratios of Cadra cautella (Lepidoptera: Pyralidae) different life stages after treated with ultraviolet radiation in dates

Function of Ultraviolet Radiation (UV-B) Light on the Survival of Red Flour Beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) and their Body Fitness

Genetic basis of variation in thermal developmental plasticity forDrosophila melanogasterbody pigmentation

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