Nikon Small World Competition 2018: Winners & Finalists

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The document summarizes the winners and honorable mentions of the 2018 Nikon Small World Photography Competition. It lists the 1st through 20th place winners, including details about each winning image. It also lists several honorable mentions and some additional distinguished images submitted to the competition.

Science

1st Place: Eye of a Metapocyrtus subquadrulifer beetle. Yousef Al Habshi
Nikon Small World Photography Competition 2018

Nikon Small World Photography Competition 2018

2nd Place: Fern sorus (structures producing and containing spores) Rogelio Moreno Gill

3rd Place:Spittlebug nymph in its bubble house. Saulius Gugis

4th Place:Peacock feather section. Can Tunçer

5th Place:Parasteatoda tepidariorum (spiderembryo) stained for embryo surface (pink), nuclei (blue) and microtubules (green). Dr. Tessa Montague

6th Place:Primate foveola (central region of the retina. Hanen Khabou

8th Place:Portrait of Sternochetus
mangiferae (mango seed weevil). Pia Scanlon

9th Place:Security hologram. Dr. Haris Antonopoulos

10th Place:Stalks with pollen grains. Dr. Csaba Pintér

11th Place:Human fibroblast undergoing cell
division, showing actin(gray), myosin II (green)
and DNA (magenta). Nilay TanejaDr. Dylan Burnette

12th Place: Urania ripheus (butterfly) wing scales. Luciano Andres Richino

13th Place: Balanus glandula (acorn barnacle). Charles B. Krebs

14th Place: African green monkey cell (COS-7) stained for actin and microtubules. Andrew Moore Dr. Erika Holzbaur

15th Place: Varroa destructor (mite) on the back of Apis mellifera (honeybee). Antoine Franck

16th Place: Mouse oviduct vasculature.
Dr. Amanda D. Phillips Yzaguirre

17th Place: Breast tissue in lactation: Milk
filled spheres (red) surrounded by tiny
muscle cells that squeeze out milk
(yellow) and immune cells that monitor
for infection (blue). Caleb Dawson

18th Place: Amino acid crystals (L-glutamine and beta-alanine). Justin Zoll

19th Place: Vespa velutina (Asian hornet) with venom on its stinger. Pierre Anquet

20th Place: Human retina. Dr. Nicolás Cuenca
,Isabel Ortuño-Lizarán

Daphnia (water flea) with eggs. Anne Algar

Polytrochus larva of a pelagic gymnosome pteropod with
externalized cup-shaped mouthparts used for feeding
(actin in red; nuclei in grayscale; and serotonin-positive
elements in green). Dr. Michael J. Boyle

Emmonsite (iron tellurite mineral). Dr. Emilio Carabajal Márquez

Penicillium vulpinum (mold). Tracy Debenport

Shell of a Litchi chinensis (lychee). Sergii Dymchenko

Charaxes sp. (emperor butterfly) wing. Charles B. Krebs

Pinus heldreichii (Bosnian pine tree) cross section. Anatoly Mikhaltsov

Bubbles and single cloth fiber (red) on a rock surface. Walter A. Piorkowski

Bryum hornum (moss) antheridia (sex organ) and paraphyses (support structures). Magdalena Turzańska

Mite on an antenna of a May bug. Emre Can Alagöz

The hair on the footpad of the beetle, Pachyrhynchus sarcitis. Lu-Yi Wang Dr. Hamed Rajabi

Simple compound flower in bloom. James Dorey

A flower bud before opening. Dr. Havi Sarfaty

Early development phase of Salix phylicifolia (tea-leaved willow) stamen. Henri Koskinen

Vascular bundle of Pinus heldreichii (Bosnian pine tree) leaf. Anatoly Mikhaltsov

Cerebellum showing Purkinje cells (red), nuclei (blue) and tau (green). Gabriel Luna,Dr. Israel Hernandez, Dr. Kenneth S. Kosik

Algae cells within Xenia sp. - pulsing coral (coral). Alexandra Tsitrina,Elena Voronezhskaya

Inner ear neurons of a mouse. Dr. Stephen Freeman, Dr. Laurence Delacroix

END24-OCTUBRE-2018
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ARTICLE IN PRESS http://www.elsevier.de/protis Published online date 7 August 2006 1 Correspondin fax +81 29 853 e-mail iinouye 2Current addr Parkville, Victo & 2006 Elsev doi:10.1016/j 157, 401—419, August 2006 Protist, Vol. ORIGINAL PAPER Hatena arenicola gen. et sp. nov., a Katablepharid Undergoing Probable Plastid Acquisition Noriko Okamoto2, and Isao Inouye1 Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8572, Japan Submitted February 27, 2006; Accepted May 27, 2006 Monitoring Editor: Robert A. Andersen Hatena arenicola gen. et sp. nov., an enigmatic flagellate of the katablepharids, is described. It shows ultrastructural affinities to the katablepharids, including large and small ejectisomes, cell covering, and a feeding apparatus. Although molecular phylogenies of the 18S ribosomal DNA support its classification into the katablepharids, the cell is characterized by a dorsiventrally compressed cell shape and a crawling motion, both of which are unusual within this group. The most distinctive feature of Hatena arenicola is that it harbors a Nephroselmis symbiont. This symbiosis is distinct from previously reported cases of ongoing symbiosis in that the symbiont plastid is selectively enlarged, while other structures such as the mitochondria, Golgi body, cytoskeleton, and endomembrane system are degraded; the host and symbiont have developed a morphological association, i.e., the eyespot of the symbiont is always at the cell apex of Hatena arenicola; and only one daughter cell inherits the symbiont during cell division, resulting in a symbiont-bearing green cell and a symbiont- lacking colorless cell. Interestingly, the colorless cells have a feeding apparatus that corresponds to the location of the eyespot in symbiont-bearing cells, and they are able to feed on prey cells. This indicates that the morphology of the host depends on the presence or absence of the symbiont. These observations suggest that Hatena arenicola has a unique ‘‘half-plant, half-predator’’ life cycle; one cell divides into an autotrophic cell possessing a symbiotic Nephroselmis species, and a symbiont-lacking colorless cell, which later develops a feeding apparatus de novo. The evolutionary implications of Hatena arenicola as an intermediate step in plastid acquisition are discussed in the context of other examples of ongoing endosymbioses in dinoflagellates. & 2006 Elsevier GmbH. All rights reserved. Key words: Hatena arenicola; Katablepharidophyta/Kathablepharida; Nephroselmis symbiont; plant evolution; plastid acquisition via secondary endosymbiosis; ultrastructure. Abbreviations: EM ¼ electron microscopy; ER ¼ endoplasmic reticulum; ICBN ¼ International Code of Botanical Nomenclature; ICZN ¼ International Code of Zoological Nomenclature; LM ¼ light microscopy; SEM ¼ scanning electron microscopy; SSU rDNA ¼ small subunit ribosomal DNA; TEM ¼ transmission electron microscopy. g author; 4533 ...

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