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https://www.readbyqxmd.com/read/28658320/a-u-pb-zircon-age-constraint-on-the-oldest-recorded-air-breathing-land-animal
#1
Stephanie E Suarez, Michael E Brookfield, Elizabeth J Catlos, Daniel F Stöckli
The oldest-known air-breathing land animal is the millipede Pneumodesmus newmani, found in the Cowie Harbour Fish Bed at Stonehaven, Scotland. Here we report the youngest, most concordant 238U-206Pb zircon age from ash below the fish bed of 413.7±4.4 Ma (±2σ), whereas the youngest age from a tuffaceous sandstone above the fish bed is statistically indistinguishable at 414.3±7.1 Ma. The Cowie Harbour Fish Bed thus appears to be lowermost Devonian (Lochkovian), contrary to the previously accepted mid-Silurian age based on palynomorphs from adjacent exposures...
2017: PloS One
https://www.readbyqxmd.com/read/28612274/fine-structure-of-the-midgut-epithelium-in-the-millipede-telodeinopus-aoutii-myriapoda-diplopoda-with-special-emphasis-on-epithelial-regeneration
#2
M M Rost-Roszkowska, M Kszuk-Jendrysik, A Marchewka, I Poprawa
The midgut of millipedes is composed of a simple epithelium that rests on a basal lamina, which is surrounded by visceral muscles and hepatic cells. As the material for our studies, we chose Telodeinopus aoutii (Demange, 1971) (Kenyan millipede) (Diplopoda, Spirostreptida), which lives in the rain forests of Central Africa. This commonly reared species is easy to obtain from local breeders and easy to culture in the laboratory. During our studies, we used transmission and scanning electron microscopes and light and fluorescent microscopes...
June 14, 2017: Protoplasma
https://www.readbyqxmd.com/read/28610335/rhigonema-naylae-n-sp-rhigonematomorpha-rhigonematidae-a-new-parasitic-nematode-from-a-japanese-polydesmid-millipede-polydesmida-xystodesmidae
#3
Jans Morffe, Koichi Hasegawa
Rhigonema naylae n. sp. (Rhigonematomorpha: Rhigonematidae) is described from the hindgut of the polydesmid millipede Parafontaria laminata (Attems, 1909) (Polydesmida: Xystodesmidae), from Aichi prefecture, Japan. The new species is characterized by having a medium sized body in both sexes, the cephalic collar partially fused to the body cuticle, but not overhanging the body contour; cervical region densely covered in short, fine microtrichs that extend from the posterior margin of the cephalic collar to ca...
May 22, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610229/a-new-east-african-genus-of-spirostreptid-millipedes-diplopoda-spirostreptida-spirostreptidae-with-notes-on-their-fungal-ectoparasite-i-rickia-gigas-i
#4
Henrik Enghoff
The new genus Tropostreptus is erected to accommodate seven species which are all endemic in Tanzania: T. hamatus (Demange, 1977) (type species, = Spirostreptus hamatus Demange, 1977), T. sigmatospinus sp. nov., T. microcephalus sp. nov., T. droides sp. nov., T. kipunji spec. nov., T. austerus (Attems, 1950) (= Epistreptus austerus Attems, 1950) and T. severus sp. nov. All but one (T. sigmatospinus) of the species are restricted to the Eastern Arc Mts. in a wide sense, i.e., including Mt. Rungwe. Notes are included on Rickia gigas Santamaria et al...
June 7, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610139/contributions-to-the-millipede-genus-i-nepalella-i-shear-1979-from-china-with-four-new-species-and-first-results-on-phylogeny-based-on-dna-barcoding-diplopoda-chordeumatida-megalotylidae
#5
Weixin Liu, Thomas Wesener, Sergei Golovatch, Mingyi Tian
Four new species of the chordeumatidan millipede genus Nepalella Shear, 1979, family Megalotylidae, are described from caves in southern China: N. troglodytes sp. nov., N. lobata sp. nov., N. jinfoshan sp. nov., and N. wangi sp. nov. Three of them (except N. lobata sp. nov.) are presumed troglobites. Additional locality records of two cave congeners, N. caeca Shear, 1999 and N. grandoides Golovatch, Geoffroy & Mauriès, 2006, are also provided. DNA-barcoding based on the COI mitochondrial gene is documented in this genus and for species of the order Chordeumatida outside Europe for the first time...
March 16, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609869/two-new-giant-pill-millipede-species-of-the-genus-zoosphaerium-endemic-to-the-bemanevika-area-in-northern-madagascar-diplopoda-sphaerotheriida-arthrosphaeridae
#6
Christina Sagorny, Thomas Wesener
Madagascar is one of the world's most important hotspots of biodiversity and a center for localized endemism. Among the highly endemic faunal elements are the giant pill-millipedes, order Sphaerotheriida, which are severely understudied in Madagascar. Here we provide descriptions of two new species of endemic giant-pill millipedes of the genus Zoosphaerium Pocock, 1895: Zoosphaerium bemanevika n. sp. and Zoosphaerium minutus n. sp.. Zoosphaerium bemanevika n. sp. belongs to the Z. coquerelianum species-group, while Z...
May 9, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609857/new-records-of-millipedes-and-centipedes-from-bulgaria-with-an-annotated-checklist-of-the-bulgarian-myriapods
#7
Darina Bachvarova, Boyan Vagalinski, Aleksandar Doichinov, Pavel Stoev
The present paper records new and poorly known myriapods (Diplopoda, Chilopoda) collected in Bulgaria in the last 10 years. Four new species are reported as new to the Bulgarian fauna: Lithobius melanops Newport, 1845 (Chilopoda: Lithobiomorpha: Lithodiidae), Polydesmus collaris C.L. Koch, 1847, Polydesmus inconstans Latzel, 1884 and Polydesmus schaessburgensis Verhoeff, 1898 (Diplopoda: Polydesmida: Polydesmidae). Scanning electron micrographs of the gonopods and male leg-pairs 5 and 6 are provided for the first time for Bulgarosoma superficiei Strasser, 1975, a species hitherto known only from its original description...
May 10, 2017: Zootaxa
https://www.readbyqxmd.com/read/28603796/reply-to-the-comment-on-robust-scalable-high-throughput-production-of-monodisperse-drops-by-m-nakajima-lab-chip-2017-17-doi-10-1039-c7lc00181a
#8
E Amstad, D A Weitz
This reply to the comment by Nakajima on our article that appeared in Lab on a Chip (E. Amstad, M. Chemama, M. Eggersdorfer, L. R. Arriaga, M. Brenner and D. A. Weitz, Lab Chip, 2016, 16, 4163-4172) highlights the differences between the microchannel step emulsification devices developed by the Nakajima group and the millipede device reported by us in Lab on a Chip.
June 12, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28444830/gene-expression-reveals-evidence-for-egfr-dependent-proximal-distal-limb-patterning-in-a-myriapod
#9
Ralf Janssen
Evolution of segmented limbs is one of the key innovations of Arthropoda, allowing development of functionally specific specialized head and trunk appendages, a major factor behind their unmatched evolutionary success. Proximodistal limb patterning is controlled by two regulatory networks in the vinegar fly Drosophila melanogaster, and other insects. The first is represented by the function of the morphogens Wingless (Wg) and Decapentaplegic (Dpp); the second by the EGFR-signaling cascade. While the role of Wg and Dpp has been studied in a wide range of arthropods representing all main branches, that is, Pancrustacea (= Hexapoda + Crustacea), Myriapoda and Chelicerata, investigation of the potential role of EGFR-signaling is restricted to insects (Hexapoda)...
May 2017: Evolution & Development
https://www.readbyqxmd.com/read/28376096/pattern-or-process-evaluating-the-peninsula-effect-as-a-determinant-of-species-richness-in-coastal-dune-forests
#10
Pieter I Olivier, Victor Rolo, Rudi J van Aarde
The peninsula effect predicts that the number of species should decline from the base of a peninsula to the tip. However, evidence for the peninsula effect is ambiguous, as different analytical methods, study taxa, and variations in local habitat or regional climatic conditions influence conclusions on its presence. We address this uncertainty by using two analytical methods to investigate the peninsula effect in three taxa that occupy different trophic levels: trees, millipedes, and birds. We surveyed 81 tree quadrants, 102 millipede transects, and 152 bird points within 150 km of coastal dune forest that resemble a habitat peninsula along the northeast coast of South Africa...
2017: PloS One
https://www.readbyqxmd.com/read/28375850/decentralized-control-mechanism-underlying-interlimb-coordination-of-millipedes
#11
Takeshi Kano, Kazuhiko Sakai, Kotaro Yasui, Dai Owaki, Akio Ishiguro
Legged animals exhibit adaptive and resilient locomotion through interlimb coordination. The long-term goal of this study is to clarify the relationship between the number of legs and the inherent decentralized control mechanism for interlimb coordination. As a preliminary step, the study focuses on millipedes as they represent the species with the greatest number of legs among various animal species. A decentralized control mechanism involving local force feedback was proposed based on the qualitative findings of behavioural experiments in which responses to the removal of part of the terrain and leg amputation were observed...
April 4, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28331389/iulomorphid-millipedes-diplopoda-spirostreptida-iulomorphidae-of-tasmania-australia
#12
Robert Mesibov
Tasmanian Iulomorphidae are here assigned to the genera Amastigogonus Brölemann, 1913, Atelomastix Attems, 1911 and Equestrigonusgen. n. Descriptions or redescriptions are given for Amastigogonus danpicolasp. n., Amastigogonus elephassp. n., Amastigogonus fossuliger Verhoeff, 1944, Amastigogonus hardyi (Chamberlin, 1920), Amastigogonus hellyerisp. n., Amastigogonus michaelsaesp. n., Amastigogonus orientalissp. n., Amastigogonus peninsulensissp. n., Amastigogonus tasmanianus Brölemann, 1913 (type species of Amastigogonus), Amastigogonus verreauxii (Gervais, 1847), Atelomastix bonhamisp...
2017: ZooKeys
https://www.readbyqxmd.com/read/28303527/chemical-ecology-of-cave-dwelling-millipedes-defensive-secretions-of-the-typhloiulini-diplopoda-julida-julidae
#13
Slobodan E Makarov, Michaela Bodner, Doris Reineke, Ljubodrag V Vujisić, Marina M Todosijević, Dragan Ž Antić, Boyan Vagalinski, Luka R Lučić, Bojan M Mitić, Plamen Mitov, Boban D Anđelković, Sofija Pavković Lucić, Vlatka Vajs, Vladimir T Tomić, Günther Raspotnig
Cave animals live under highly constant ecological conditions and in permanent darkness, and many evolutionary adaptations of cave-dwellers have been triggered by their specific environment. A similar "cave effect" leading to pronounced chemical interactions under such conditions may be assumed, but the chemoecology of troglobionts is mostly unknown. We investigated the defensive chemistry of a largely cave-dwelling julid group, the controversial tribe "Typhloiulini", and we included some cave-dwelling and some endogean representatives...
April 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28286729/a-novel-cytochrome-p450-cyp3201b1-is-involved-in-r-mandelonitrile-biosynthesis-in-a-cyanogenic-millipede
#14
Takuya Yamaguchi, Yasumasa Kuwahara, Yasuhisa Asano
Specialized arthropods and more than 2500 plant species biosynthesize hydroxynitriles and release hydrogen cyanide as a defensive mechanism. The millipede Chamberlinius hualienensis accumulates (R)-mandelonitrile as a cyanide precursor. Although biosynthesis of hydroxynitriles in cyanogenic plants and in an insect are extensively studied, (R)-mandelonitrile biosynthesis in cyanogenic millipedes has remained unclear. In this study, we identified the biosynthetic precursors of (R)-mandelonitrile and an enzyme involved in (R)-mandelonitrile biosynthesis...
March 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28276572/joannsin-a-novel-kunitz-type-fxa-inhibitor-from-the-venom-of-prospirobolus-joannsi
#15
Ning Luan, Chunling Zhou, Pengpeng Li, Rose Ombati, Xiuwen Yan, Guoxiang Mo, Mingqiang Rong, Ren Lai, Zilei Duan, Ruiqiang Zheng
The repugnatorial glands of millipedes release various defensive chemical secretions. Although varieties of such defensive secretions have been studied, none of them is protein or peptide. Herein, a novel factor Xa (FXa) inhibitor named joannsin was identified and characterised from repugnatorial glands of Prospirobolus joannsi. Joannsin is composed of 72 amino acid residues including six cysteines, which form three intra-molecular disulfide bridges. It is a member of Kunitz-type protease inhibitor family, members of which are also found in the secretory glands of other arthropods...
March 9, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28251301/hydrogen-peroxide-as-a-new-defensive-compound-in-benzoyl-cyanide-producing-polydesmid-millipedes
#16
Yasumasa Kuwahara, Takuya Yamaguchi, Yayoi Ichiki, Tsutomu Tanabe, Yasuhisa Asano
Hydrogen peroxide was newly and simultaneously demonstrated with well-known hydrogen cyanide as a component of defensive secretions of "benzoyl cyanide" producing polydesmid millipedes. Presence of hydrogen peroxide was successively evidenced by Trinder reagent's spray with colorless as well as oily smears of defensive secretions containing benzoyl cyanide and hydrogen cyanide by alkaline picrate paper treatment. Linear correlation was demonstrated between quantities of hydrogen peroxide and benzoyl cyanide...
April 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/28197593/tandem-emulsification-for-high-throughput-production-of-double-emulsions
#17
M L Eggersdorfer, W Zheng, S Nawar, C Mercandetti, A Ofner, I Leibacher, S Koehler, D A Weitz
Core-shell double emulsions produced using microfluidic methods with controlled structural parameters exhibit great potential in a wide range of applications, but the low production rate of microfluidic methods hinders the exploitation of the capabilities of microfluidics to produce double emulsions with well-defined features. A major obstacle towards the scaled-up production of core-shell double emulsions is the difficulty of achieving robust spatially controlled wettability in integrated microfluidic devices...
February 15, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28187635/the-first-hydrophilous-cave-dwelling-millipede-from-serbia-i-typhloiulus-i-i-balcanicus-i-sp-nov-diplopoda-julida-julidae
#18
Dragan Ž Antić, Boris D Dudić, Mirjana R Gajić, Luka R Lučić
As the fourth hydrophilous species of the genus Typhloiulus Latzel, 1884, the new species T. balcanicus Antić sp. nov. is described from two caves in the Stara Planina Mountains of Serbia. A brief discussion of the relationships between the new species and congeners with modified and unmodified mouthparts is presented, as well as short notes on the habitat of the new species and comments on other semiaquatic millipedes with modified mouthparts.
January 25, 2017: Zootaxa
https://www.readbyqxmd.com/read/28178274/convergent-evolution-of-unique-morphological-adaptations-to-a-subterranean-environment-in-cave-millipedes-diplopoda
#19
Weixin Liu, Sergei Golovatch, Thomas Wesener, Mingyi Tian
Animal life in caves has fascinated researchers and the public alike because of the unusual and sometimes bizarre morphological adaptations observed in numerous troglobitic species. Despite their worldwide diversity, the adaptations of cave millipedes (Diplopoda) to a troglobitic lifestyle have rarely been examined. In this study, morphological characters were analyzed in species belonging to four different orders (Glomerida, Polydesmida, Chordeumatida, and Spirostreptida) and six different families (Glomeridae, Paradoxosomatidae, Polydesmidae, Haplodesmidae, Megalotylidae, and Cambalopsidae) that represent the taxonomic diversity of class Diplopoda...
2017: PloS One
https://www.readbyqxmd.com/read/28078624/millipede-defensive-compounds-are-a-double-edged-sword-natural-history-of-the-millipede-parasitic-genus-myriophora-brown-diptera-phoridae
#20
John M Hash, Jocelyn G Millar, John M Heraty, James F Harwood, Brian V Brown
Toxic defensive secretions produced by millipedes in the orders Julida, Spirobolida, Spirostreptida, and Polydesmida are highly repellent to most vertebrate and invertebrate natural enemies, but a few insects have evolved mechanisms to overcome these defenses. We demonstrate that highly specialized parasitic phorid flies in the species-rich genus Myriophora use volatile millipede defensive compounds as kairomones for host location. Of the two predominant quinone components in the defensive blend of juliform millipedes, 2-methoxy-3-methyl-1,4-benzoquinone alone was sufficient to attract adult flies of both sexes; however, a combination of 2-methoxy-3-methyl-1,4-benzoquinone and 2-methyl-1,4-benzoquinone increased attractiveness nearly threefold...
February 2017: Journal of Chemical Ecology
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