Petra Sierwald
Field Museum of Natural History
AnatomyMonophylyBiogeographyBiodiversityGenusSubspeciesEcologyRange (biology)Phylogenetic treeMillipedeSpirobolidaSphaerotheriidaPolydesmidaSpiderMyriapodaTaxonomy (biology)TaxonEvolutionary biologyBiologyPhylogeneticsZoologyGonopod
Publications 52
#1John HollierH-Index: 8
#2Eduard Stöckli (Naturhistorisches Museum)
Last. Petra Sierwald (FMNH: Field Museum of Natural History)H-Index: 18
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Johann Carl described 390 species or subspecies of millipedes during his long career at the Museum d'histoire naturelle de Geneve, studying specimens collected on his own expeditions and on those of other, mainly Swiss, naturalists. The type specimens deposited in Geneva are enumerated, and the type specimens that could be located in other collections in other museums are reported. Lectotypes are designated for 17 species: Brachyspirobolus aequatorialis (Carl, 1909), Carlopeltis alatus (Carl, 19...
#1Xavier J Zahnle (UC Davis: University of California, Davis)H-Index: 2
#2Petra Sierwald (FMNH: Field Museum of Natural History)H-Index: 18
Last. Jason E. Bond (UC Davis: University of California, Davis)H-Index: 34
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Abstract Mate choice, copulation, genital morphology, and sperm storage are not very well understood in millipedes. The use of three-dimensional x-ray computed tomography (μCT) provides new morphological data regarding millipede reproductive systems in both the female and male, including chitinous sclerites and membranes, muscles, glands, oviducts, and sperm conduits. Here we present a complete integrated account of the morphology and function of the female genital organs in the family Polydesmi...
1 CitationsSource
#1Julián Bueno-Villegas (UAEH: Universidad Autónoma del Estado de Hidalgo)H-Index: 3
#2Petra SierwaldH-Index: 18
Last. Antonio A. De Ascenção (University of Los Andes)H-Index: 1
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: Here we provide a checklist of millipedes described or recorded in the literature from Venezuela. The diplopod fauna is comprised of eight orders, 18 families, 54 genera, and 157 species. The millipede orders Glomerida, Chordeumatida, Julida, Siphoniulida, and Platydesmida (known elsewhere in the Western Hemisphere) are not, as of yet, reported from the Venezuelan fauna. Two widely distributed invasive species, Asiomorpha coarctata and Oxidus gracilis, were recorded from Venezuela. All species...
#1Joan E. Ball-Damerow (FMNH: Field Museum of Natural History)H-Index: 1
#1Joan E. Ball-Damerow (FMNH: Field Museum of Natural History)H-Index: 4
Last. Robert P. Guralnick (Florida Museum of Natural History)H-Index: 50
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Our world is in the midst of unprecedented change—climate shifts and sustained, widespread habitat degradation have led to dramatic declines in biodiversity rivaling historical extinction events. At the same time, new approaches to publishing and integrating previously disconnected data resources promise to help provide the evidence needed for more efficient and effective conservation and management. Stakeholders have invested considerable resources to contribute to online databases of species o...
21 CitationsSource
#1Petra Sierwald (FMNH: Field Museum of Natural History)H-Index: 18
#2Derek A. Hennen (VT: Virginia Tech)H-Index: 2
Last. Paul E. Marek (VT: Virginia Tech)H-Index: 14
view all 5 authors...
2 CitationsSource
#1Anh D. NguyenH-Index: 5
#2Petra SierwaldH-Index: 18
Last. Paul E. MarekH-Index: 14
view all 3 authors...
#1Petra Sierwald (FMNH: Field Museum of Natural History)H-Index: 18
#2Rüdiger Bieler (FMNH: Field Museum of Natural History)H-Index: 19
Last. Gary Rosenberg (Academy of Natural Sciences of Drexel University)H-Index: 18
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In 2017, a minimum of 8.5 million mollusk lots representing some 100 million specimens were held by 86 natural history collections in the U.S. (81) and Canada (5). Of these, 6.2 million lots representing 70 million specimens were cataloged (73%), another 2.3 million lots were considered quality backlog awaiting cataloguing, and 4.5 million lots (53% of the total) had undergone some form of data digitization. About 1.1 million (25%) of the digitized lots have been georeferenced, albeit with diffe...
9 CitationsSource
#1Elizabeth K. Shea (Delaware Museum of Natural History)H-Index: 9
#2Petra Sierwald (FMNH: Field Museum of Natural History)H-Index: 18
Last. Gary Rosenberg (Academy of Natural Sciences of Drexel University)H-Index: 18
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The 2017 annual meeting of the American Malacological Society (AMS) was preceded by an iDigBio/National Science Foundation supported workshop on digitizing mollusk specimen data in non-federal Natural History Collections in the USA and Canada. The AMS President's Symposium invited mollusk researchers, curators and collection managers, who are creating and employing digital specimen data in research to highlight the many new avenues that are opening up due to the growing landscape of digital data...
2 CitationsSource
#1Juanita Rodriguez (AU: Auburn University)H-Index: 9
#2Tappey H. Jones (Virginia Military Institute)H-Index: 27
Last. Jason E. Bond (AU: Auburn University)H-Index: 34
view all 8 authors...
With fossil representatives from the Silurian capable of respiring atmospheric oxygen, millipedes are among the oldest terrestrial animals, and likely the first to acquire diverse and complex chemical defenses against predators. Exploring the origin of complex adaptive traits is critical for understanding the evolution of Earth’s biological complexity, and chemical defense evolution serves as an ideal study system. The classic explanation for the evolution of complexity is by gradual increase fr...
16 CitationsSource
#1Ward C. Wheeler (AMNH: American Museum of Natural History)H-Index: 68
#2Jonathan A. Coddington (National Museum of Natural History)H-Index: 56
Last. Jun-Xia Zhang (UBC: University of British Columbia)H-Index: 12
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We present a phylogenetic analysis of spiders using a dataset of 932 spider species, representing 115 families (only the family Synaphridae is unrepresented), 700 known genera, and additional representatives of 26 unidentified or undescribed genera. Eleven genera of the orders Amblypygi, Palpigradi, Schizomida and Uropygi are included as outgroups. The dataset includes six markers from the mitochondrial (12S, 16S, COI) and nuclear (histone H3, 18S, 28S) genomes, and was analysed by multiple meth...
193 CitationsSource