What nymphal morphology can tell us about parental investment – a group of cockroach hatchlings in Baltic amber documented by a multi-method approach

Hörnig, Marie K.; Sombke, Andy; Haug, Carolin; Harzsch, Steffen; Haug, Joachim T.

doi:10.26879/571

Cited by 22 publications

(30 citation statements)

References 44 publications

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“…Haug, J. T. et al 2009aHaug, J. T. et al vs. 2010aNützel 2014). In some cases, the morphology of the very early stages may also be informative for possible social interactions (Hörnig et al 2016). In the present case, the individuals appear to have been actively mobile and not being dependent on interactions with conspecific individuals.…”

Section: Importance Of Fossil Immaturesmentioning

confidence: 68%

“…Single image stacks were subsequently fused with the low-cost software ImageAnalyzer and stitched with the Photomerge function of Adobe Photoshop CS4. Red-cyan anaglyphs were generated based on the image stacks by virtual surface reconstruction with ImageAnalyzer (Haug, J. T. et al 2013b;Hörnig et al 2016).…”

Section: Methodsmentioning

confidence: 99%

“…auchenorrhynchans), immature stages are much more common than adults (Weitschat & Wichard 2002). Possible hatchlings of jumping bristle tails (Archaeognatha) and cockroaches (Blattodea) have been recently described from Baltic amber (Haug, J. T. et al 2015, Hörnig et al 2016). While amber is especially known to preserve insects, other arthropods also occur in amber, and hence potentially their immature stages.…”

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confidence: 99%

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Early post-embryonic polyxenidan millipedes from Saxonian amber (Eocene)

Haug¹,

Haug²,

Neumann³

et al. 2018

Bull. Geosci.

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Early post-embryonic stages of arthropods are rarely found in the fossil record. They seem even more rarely reported in literature, possibly as it is more difficult to establish new species based on these specimens. Here we report two immature specimens of polyxenidan myriapods (Diplopoda, Polyxenida) preserved in Saxonian amber (Eocene). Specimen 1 represents a stage I individual with only three pairs of trunk appendages, the collum and three additional tergites. It is interpreted as a representative of the polyxenidan ingroup Polyxenidae. Specimen 2 represents a stage II individual with four pairs of trunk appendages, the collum and three well-sclerotised tergites. It is interpreted as a representative of the polyxenidan ingroup Synxenidae. We additionally discuss the challenges of further systematically interpreting immatures and fossil polyxenidans in general. We also discuss how the further exploration of data of immature polyxenidans, extant and fossil, has the potential to improve our understanding of their evolution and biology.•

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Section: Importance Of Fossil Immaturesmentioning

confidence: 68%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Early post-embryonic polyxenidan millipedes from Saxonian amber (Eocene)

Haug¹,

Haug²,

Neumann³

et al. 2018

Bull. Geosci.

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“…Virtual surfaces based on the unsharpness of the images were calculated for certain specimens. Although this method may produce certain artefacts due to the transparency of the amber, it provides additional topological information of the specimen (for methods see also Haug et al 2013bHaug et al , 2015bHörnig et al 2016).…”

Section: Methodsmentioning

confidence: 99%

A group of assassin fly pupae preserved in a single piece of Eocene amber

Haug¹,

Nagler²,

Haug³

et al. 2017

Bull. Geosci.

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Holometabolous insects represent a mega-diverse group of organisms that are dominant in most terrestrial faunas. All holometabolous insects develop via a specific transitory stage between the last larval stage and the adult, called the pupa. While insects in general have a comparably good fossil record, fossils of pupae of holometabolous insects are relatively rare. We report here four pupal specimens preserved in a single piece of amber. These represent pupa stages of assassin flies, Asilidae, and are most likely representatives of Laphriinae. While dipterans are quite common in the fossil record, especially in amber, representatives of Asilidae are comparably rare. Combining the rarity of the systematic group and the rarity of the specific life stage, these fossil remains of assassin fly pupae are extremely unusual; to date only a single specimen has been depicted in the literature. We discuss the importance of our new finding and possible interpretations regarding behavioural aspects of the group enclosed in amber.

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“…Steffen Harzsch works on neuroanatomical and neuroethological research of different arthropods (hexapods, myriapods, and crustaceans) [26,27] . He uses a wide range of imaging techniques with the focus on immunohistochemistry and µCT [28,29] . Besides general brain morphology in an evolutionary context, he is especially interested in the olfactory and visual system.…”

Section: The Nova Projectmentioning

confidence: 99%

The NOVA project: maximizing beam time efficiency through synergistic analyses of SRμCT data

Schmelzle

Heethoff

Heuveline

et al. 2017

Developments in X-Ray Tomography XI

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Beamtime and resulting SRμCT data are a valuable resource for researchers of a broad scientific community in life sciences. Most research groups, however, are only interested in a specific organ and use only a fraction of their data. The rest of the data usually remains untapped. By using a new collaborative approach, the NOVA project (Network for Online Visualization and synergistic Analysis of tomographic data) aims to demonstrate, that more efficient use of the valuable beam time is possible by coordinated research on different organ systems. The biological partners in the project cover different scientific aspects and thus serve as model community for the collaborative approach. As proof of principle, different aspects of insect head morphology will be investigated (e.g., biomechanics of the mouthparts, and neurobiology with the topology of sensory areas). This effort is accomplished by development of advanced analysis tools

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What nymphal morphology can tell us about parental investment – a group of cockroach hatchlings in Baltic amber documented by a multi-method approach

Abstract: Joachim T. 2016. What nymphal morphology can tell us about parental investment-a group of cockroach hatchlings in Baltic amber documented by a multi-method approach.

Cited by 22 publications

References 44 publications

Early post-embryonic polyxenidan millipedes from Saxonian amber (Eocene)

Early post-embryonic polyxenidan millipedes from Saxonian amber (Eocene)

A group of assassin fly pupae preserved in a single piece of Eocene amber

The NOVA project: maximizing beam time efficiency through synergistic analyses of SRμCT data

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