Developmental Models of the Forensically Important Carrion Beetle,<i>Thanatophilus sinuatus</i>(Coleoptera: Silphidae)

Montoya-Molina, Santiago; Jakubec, Pavel; Qubaiová, Jarin; Novák, Martin; Šuláková, Hana; Růžička, Jan

doi:10.1093/jme/tjaa255

Cited by 16 publications

(20 citation statements)

References 31 publications

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“…Their size, however, never exceeded 30 larvae. Thanatophilus sinuatus (Fabricius, 1775) (Coleoptera: Silphidae) were reared in Petri dishes in groups of up to 5 larvae [ 14 ]. In the case of Oxelytrum discicolle (Brullé, 1836) (Coleoptera: Silphidae), the number of larvae per jar varied between 10 and 30 [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Insect rearing protocols in forensic entomology: Benefits from collective rearing of larvae in a carrion beetle Necrodes littoralis L. (Silphidae)

Gruszka

Matuszewski

2021

PLoS ONE

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Forensic entomologists frequently use a developmental method to estimate a post-mortem interval (PMI). Such estimates are based usually on the blow fly larvae or puparia. Data on their development is obtained by rearing them in colonies. In the case of beetles, which can be also useful for PMI estimation, development data is frequently collected by rearing them individually. However, some carrion beetles are gregarious, for instance, Necrodes littoralis (Linnaeus, 1758) (Silphidae). We compared mortality, rate of development and body size of emerged adult beetles reared individually and in aggregations. Mortality was much higher for beetles reared individually, particularly at low temperatures. The rearing protocol affected the time of immature development and the size of adult insects. Individually reared specimens developed much longer at 16°C, whereas at 20°C and 26°C development times of individually reared beetles were slightly shorter. Significant differences in the body size were observed only at 16°C; beetles that developed in aggregations were larger at this temperature. These findings demonstrate that aggregating is particularly beneficial for larvae of N. littoralis at low temperatures, where it largely reduces mortality and facilitates growth. Moreover, these results indicate that in forensic entomology the protocol of individual rearing is unsuitable for gregarious beetles, as it produces reference developmental data of low quality.

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Section: Introductionmentioning

confidence: 99%

Insect rearing protocols in forensic entomology: Benefits from collective rearing of larvae in a carrion beetle Necrodes littoralis L. (Silphidae)

Gruszka

Matuszewski

2021

PLoS ONE

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“… Species Family Geographic population Temp. range [°C] Thermal summation constant [ADD] Developmental threshold [°C] References Necrodes littoralis Silphidae Central European 14–30 434.70 ± 28.86 9.04 ± 0.55 This study Thanatophilus micans Silphidae South African 17–20 197.97 ± 19.74 13.26 ± 0.58 Ridgeway et al 37 Thanatophilus mutilatus Silphidae South African 15–27.5 384.11 ± 16.99 9.04 ± 0.36 Ridgeway et al 37 Thanatophilus sinuatus Silphidae Central European 14–26 360.46 ± 10.75 9.85 ± 0.23 Montoya-Molina et al 39 Thanatophilus rugosus Silphidae Central European 12–22 362.76 ± 4.97 8.53 ± 0.08 Montoya-Molina et al 40 Dermestes tessellatocollis Dermestidae Chinese 16–25 664.39 ± 55.87 12.07 ± 0.53 Wang et al 42 Creophilus maxillosus Staphylinidae Chinese 17.5–30 492.06 ± 23...…”

Section: Discussionmentioning

confidence: 74%

“…The pattern of mortality across temperatures is consistent with the patterns revealed for other forensically important beetles. In T. micans , T sinuatus , D. tessellatocollis , C. maxillosus and N. rufipes the highest mortality was observed at extreme temperatures 35 , 39 , 42 , 45 , 46 . The same pattern is reported in this study.…”

Section: Discussionmentioning

confidence: 95%

“…First models were created for Thanatophilus micans (Silphidae), population from South Africa 35 . The other carrion beetles with published models comprise: Oxelytrum discicolle population from northern part of South America 36 , Thanatophilus mutilatus population from South Africa 37 , Necrodes littoralis 15 population from Central Europe, Necrophila (Calosilpha) brunnicollis population from East Asia 38 and populations from Central Europe of Thanatophilus sinuatus 39 and Thanatophilus rugosus 40 . Models were created also for four species of Dermestidae : populations from south-western Europe of Dermestes frischi, D. undulatus and D. maculatus and Chinese population of D. tessellatocollis 41 , 42 .…”

Section: Introductionmentioning

confidence: 99%

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Temperature models of development for Necrodes littoralis L. (Coleoptera: Silphidae), a carrion beetle of forensic importance in the Palearctic region

Gruszka

Matuszewski

2022

Sci Rep

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Analysis of insects can provide evidence in death cases, for example, by answering the question about the time of death. Apart from flies, beetles are the second most useful insect group in forensic entomology. To elucidate the time of death based on insect evidence, developmental models of a given species are necessary. In this study, we developed such models for Necrodes littoralis, a necrophagous beetle, which is common in the Palearctic region and has great potential in forensic entomology. We monitored the development at 10 constant temperatures (14–30 °C). Larvae were reared in aggregations. Thermal summation models, isomorphen and isomegalen diagrams and growth curves were derived using the data. Depending on the temperature, development lasted between about 23 and 89 days. Mortality was high at the extremes of the temperature range. The thermal summation constant for the total development was 434.7 ± 28.86 accumulated degree-days above a developmental threshold of 9.04 ± 0.55 °C. This is the first comprehensive dataset on the development of N. littoralis. Implications for its use in forensic casework are discussed.

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“…The necrophagous species belonging to Silphinae became the focus of many ecological studies in recent years, and as a result, it was found that different species react differently to the same stimuli. For example, values of lower developmental threshold (LDT) and accumulated degree days (ADD) can differ between species of the same genus [2][3][4] . Therefore, correct species delimitation is extremely important for ecology and many other fields of science including forensic entomology, which use LDT and ADD for predictions such as post-mortem interval (PMImin) or time of colonization (ToC) 4 .…”

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confidence: 99%

Integrative taxonomy and species distribution models of the genus Diamesus Hope, 1840 (Coleoptera: Staphylinidae: Silphinae)

Růžička

Jakubec

Mahlerová

et al. 2023

Sci Rep

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Integrative taxonomy of Diamesus Hope, 1840 (Coleoptera: Silphinae) is presented. Adults of D. bimaculatus Portevin, 1914 (endemic to Taiwan) and D. osculans (Vigors, 1825) (widely distributed from northern India to Australia) are redescribed, keyed and figured, including characters of the male and female genitalia of both species. Variation in elytral maculation in D. osculans is discussed and illustrated. The absence of diagnostic differences of D. osculans var. reductus Pic, 1917 from D. osculans is discussed, and the former name is confirmed as a junior subjective synonym of D. osculans. Types of all three names available were studied; a lectotype and paralectotypes are designated for the name D. osculans var. bimaculatus Portevin, 1914. Molecular phylogenetic analysis confirms the genus Diamesus is sister group to the genus Necrodes Leach, 1815, and D. osculans and D. bimaculatus are two, well supported clades. Detailed data on the distribution of D. bimaculatus and D. osculans are presented and mapped. Species distribution models for both species were created and interpreted. Diamesus osculans is reported for the first time from India: Uttarakhand, China: Anhui, Hainan, Hunan, Jiangxi, Shaanxi and Zhejiang Provinces, and Australia: Victoria; it is also recently confirmed from Taiwan, being sympatric in distribution there with D. bimaculatus. Available data on the ecology and seasonality of both species of Diamesus are also discussed.

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Developmental Models of the Forensically Important Carrion Beetle,Thanatophilus sinuatus(Coleoptera: Silphidae)

Cited by 16 publications

References 31 publications

Insect rearing protocols in forensic entomology: Benefits from collective rearing of larvae in a carrion beetle Necrodes littoralis L. (Silphidae)

Insect rearing protocols in forensic entomology: Benefits from collective rearing of larvae in a carrion beetle Necrodes littoralis L. (Silphidae)

Temperature models of development for Necrodes littoralis L. (Coleoptera: Silphidae), a carrion beetle of forensic importance in the Palearctic region

Integrative taxonomy and species distribution models of the genus Diamesus Hope, 1840 (Coleoptera: Staphylinidae: Silphinae)

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