Venation pattern and shape variation in wing of Antheraea assamensis (Lepidoptera: Saturniidae) of Assam, India

Nath, Ramesh; Devi, Dipali

doi:10.1017/s1742758409990075

Cited by 6 publications

(5 citation statements)

References 10 publications

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“…However, attempts to hierarchically cluster the populations failed, suggesting that the morphological traits considered here were not sufficiently distinct to group the insects based upon source or region. Sexual dimorphism and intra-specific variation in venation patterns and vein-thickness of A. assamensis moths has been reported recently [31]. Our results suggest that measured phenotypic traits may be under stabilizing selection with similar optima in all populations, since the low rate of migration would be sufficient to allow the populations to diverge by selection or genetic drift if stabilizing selection were not the same at all locations.…”

Section: Discussionsupporting

confidence: 72%

Genetic Variation within Native Populations of Endemic Silkmoth Antheraea assamensis (Helfer) from Northeast India Indicates Need for In Situ Conservation

et al. 2012

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A. assamensis is a phytophagous Lepidoptera from Northeast India reared on host trees of Lauraceae family for its characteristic cocoon silk. Source of these cocoons are domesticated farm stocks that crash frequently and/or wild insect populations that provide new cultures. The need to reduce dependence on wild populations for cocoons necessitates assessment of genetic diversity in cultivated and wild populations. Molecular markers based on PCR of Inter-simple sequence repeats (ISSR) and simple sequence repeats (SSR) were used with four populations of wild insects and eleven populations of cultivated insects. Wild populations had high genetic diversity estimates (Hi = 0.25; HS = 0.28; HE = 0.42) and at least one population contained private alleles. Both marker systems indicated that genetic variability within populations examined was significantly high. Among cultivated populations, insects of the Upper Assam region (Hi = 0.19; HS = 0.18; HE = 0) were genetically distinct (F ST = 0.38 with both marker systems) from insects of Lower Assam (Hi = 0.24; HS = 0.25; HE = 0.3). Sequencing of polymorphic amplicons suggested transposition as a mechanism for maintaining genomic diversity. Implications for conservation of native populations in the wild and preserving in-farm diversity are discussed.

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Section: Discussionsupporting

confidence: 72%

Genetic Variation within Native Populations of Endemic Silkmoth Antheraea assamensis (Helfer) from Northeast India Indicates Need for In Situ Conservation

et al. 2012

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“…Elliptical Fourier Descriptor (EFD) methods were developed for fitting curves to complex closed contours (Kuhl and Giardina 1982) and can be used to analyze the outlines of objects and numerically describe shapes that have few or no identifiable homologous (i.e., explicit) landmarks ( (Iwata et al 1998), (Chitwood 2014), (Bonhomme et al 2013), (Bonhomme et al 2014)), while eliminating size as a variable in shape. Instead of using traditional landmark data to quantify Lepidoptera wing shape (e.g., (Nath and Devi 2009), (Chazot et al 2016), (Zhong et al 2016)), we investigated the usefulness of EFD using the R program 'Momocs' (Bonhomme et al 2014). EFD has been used frequently in plants to study the evolution of leaf shape ((Chitwood and Naylor 2012), (Chitwood et al 2012a), (Chitwood et al 2012b), (Chitwood et al 2013), (Chitwood et al 2014)), but rarely in animals ( (Rohlf and Archie 1984), (Felice and O'Connor 2014), (Zhan and Wang 2012), (Sharma et al 2017)).…”

Section: Elliptical Fourier Descriptor Analysismentioning

confidence: 99%

Hidden Phylogenomic Signal Helps Elucidate Arsenurine Silkmoth Phylogeny and the Evolution of Body Size and Wing Shape Trade-Offs

et al. 2021

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One of the key objectives in biological research is understanding how evolutionary processes have produced Earth's diversity. A critical step towards revealing these processes is an investigation of evolutionary tradeoffs – that is, the opposing pressures of multiple selective forces. For millennia, nocturnal moths have had to balance successful flight, as they search for mates or host plants, with evading bat predators. However, the potential for evolutionary trade-offs between wing shape and body size are poorly understood. In this study, we used phylogenomics and geometric morphometrics to examine the evolution of wing shape in the wild silkmoth subfamily Arsenurinae (Saturniidae) and evaluate potential evolutionary relationships between body size and wing shape. The phylogeny was inferred based on 782 loci from target capture data of 42 arsenurine species representing all 10 recognized genera. After detecting in our data one of the most vexing problems in phylogenetic inference – a region of a tree that possesses short branches and no “support” for relationships (i.e., a polytomy), we looked for hidden phylogenomic signal (i.e., inspecting differing phylogenetic inferences, alternative support values, quartets, and phylogenetic networks) to better illuminate the most probable generic relationships within the subfamily. We found there are putative evolutionary trade-offs between wing shape, body size, and the interaction of fore- and hindwing shape. Namely, body size tends to decrease with increasing hindwing length but increases as forewing shape becomes more complex. Additionally, the type of hindwing (i.e., tail or no tail) a lineage possesses has a significant effect on the complexity of forewing shape. We outline possible selective forces driving the complex hindwing shapes that make Arsenurinae, and silkmoths as a whole, so charismatic.

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“…The 'wingtip' area included a strip from the leading edge to halfway between the M 1 and M 2 veins starting at the wingtip and including the distal 1/3 of the forewing length (Figure S1). 32 Radon transformation was then used to calculate the echo impulse responses originating from the selected areas.…”

Section: Acoustic Characterization Of 'Body' and 'Wingtip' Areasmentioning

confidence: 99%

Wingtip folds and ripples on saturniid moths create decoy echoes against bat biosonar

et al. 2021

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Venation pattern and shape variation in wing of Antheraea assamensis (Lepidoptera: Saturniidae) of Assam, India

Cited by 6 publications

References 10 publications

Genetic Variation within Native Populations of Endemic Silkmoth Antheraea assamensis (Helfer) from Northeast India Indicates Need for In Situ Conservation

Genetic Variation within Native Populations of Endemic Silkmoth Antheraea assamensis (Helfer) from Northeast India Indicates Need for In Situ Conservation

Hidden Phylogenomic Signal Helps Elucidate Arsenurine Silkmoth Phylogeny and the Evolution of Body Size and Wing Shape Trade-Offs

Wingtip folds and ripples on saturniid moths create decoy echoes against bat biosonar

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