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https://www.readbyqxmd.com/read/27857452/embryonic-development-and-a-quantitative-model-of-programmed-dna-elimination-in-mesocyclops-edax-s-a-forbes-1891-copepoda-cyclopoida
#1
Michelle K Clower, Ashton S Holub, Rebecca T Smith, Grace A Wyngaard
The highly programmed fragmentation of chromosomes and elimination of large amounts of nuclear DNA from the presomatic cell lineages (i.e., chromatin diminution), occurs in the embryos of the freshwater zooplankton Mesocyclops edax (S. A. Forbes, 1891) (Crustacea: Copepoda). The somatic genome is reorganized and reduced to a size five times smaller even though the germline genome remains intact. We present the first comprehensive, quantitative model of DNA content throughout embryogenesis in a copepod that possesses embryonic DNA elimination...
2016: Journal of Crustacean Biology
https://www.readbyqxmd.com/read/27811811/harpacticoid-copepods-their-symbiotic-associations-and-biogenic-substrata-a-review
#2
Rony Huys
Members of the order Harpacticoida are primarily free-living and benthic but some lineages have adopted alternative modes of life which involve a major habitat shift or dependence on a host. Since the first discovery of a harpacticoid associated with an invertebrate host about 150 years ago, a total of 172 species, representing 84 genera and 17 families, have been shown to live in symbiotic partnership with other organisms. The steady addition of new taxa during the last 35 years testifies to the widespread and previously underestimated occurrence of symbiosis in the group...
October 11, 2016: Zootaxa
https://www.readbyqxmd.com/read/27811806/nippoparasitus-unoashicola-a-new-genus-and-species-of-philoblennid-copepod-cyclopoida-parasitic-on-the-pacific-sugar-limpet-patelloida-saccharina-linnaeus-1758-patellogastropoda-lottiidae-from-the-intertidal-zone-of-eastern-japan
#3
Daisuke Uyeno, Rie Ogasaka, Kazuya Nagasawa
Nippoparasitus unoashicola, a new genus and species of mesoparasitic copepod, is described based on specimens of both sexes collected from the mantle cavity of the Pacific sugar limpet, Patelloida saccharina (Linnaeus, 1758) (Patellogastropoda: Lottiidae), in the intertidal zone of the Uraga Channel (North Pacific Ocean), Japan. Nippoparasitus gen. nov. differs from other philoblennid genera by two unique characters: the labium is bloated and branched into multiple digitate lobes in female, and the antenna has three claw-like spines on the terminal segment...
October 11, 2016: Zootaxa
https://www.readbyqxmd.com/read/27811805/enigmas-from-the-past-m-intosh-s-1885-annelidicolous-copepods%C3%A2-from-the-voyage-of-h-m-s-challenger
#4
Rony Huys
The type material of four monotypic genera, Leaniricola, Oestrella, Praxillinicola and Trophoniphila (Copepoda, Cyclopoida), described by M'Intosh (1885) from deep water polychaete hosts collected during the H.M.S. Challenger expedition, is re-examined. Leaniricola rotundata M'Intosh (1885) is removed from its floating status as species inquirenda in the Nereicolidae and fixed as the type of a new family, Leaniricolidae fam. nov., based on the presence of an oral cone and massive, three-dimensionally expanded, mandibular gnathobases which are used to anchor the parasite in the parapodial integument of its host...
October 11, 2016: Zootaxa
https://www.readbyqxmd.com/read/27811803/copepods-associated-with-scleractinian-corals-a-worldwide-checklist-and-a-case-study-of-their-impact-on-the-reef-building-coral-pocillopora-damicornis-linnaeus-1758-pocilloporidae
#5
Yu Rong Cheng, Anderson B Mayfield, Pei Jie Meng, Chang Feng Dai, Rony Huys
The Cnidaria have more symbiotic copepods than any other group of invertebrates, and the greatest numbers of these associates occur on hard corals. A review of the scattered literature on the diversity and taxonomic composition of scleractinian-associated copepods and their hosts revealed a total of 148 coral species, representing 66 genera and 15 families that serve as hosts to copepods. At present, 363 copepod species, representing 99 genera, 19 families and three orders, have been recorded as associates of scleractinian corals...
October 11, 2016: Zootaxa
https://www.readbyqxmd.com/read/27811800/cepolacanthus-kimi-a-new-genus-and-species-of-copepod-cyclopoida-%C3%A2-taeniacanthidae-parasitic-on-bandfish-acanthocepola-abbreviata-valenciennes-1835-actinopterygii-cepolidae-caught-off-the-iraqi-coast
#6
Balu Alagar Venmathi Maran, Seong Yong Moon, Thamir Katea Adday, Danny Tang
A new genus and species, Cepolacanthus kimi, of the family Taeniacanthidae is established based on adult female specimens collected from the gills of Bandfish Acanthocepola abbreviata (Valenciennes, 1835) (Actinopterygii: Perciformes: Cepolidae) caught off the coast of Iraq. The new genus is characterised by the following combination of features: 1) the urosome is composed of five somites, with the last urosomite probably being a compound somite formed from the failure of the third and fourth abdominal somites to separate; 2) the seta on the maxillary basis is displaced proximally from the free spinulated element; 3) the terminal claw (endopod) of the maxilliped is long and attenuate; 4) the endopod of legs 2-4 is 2-segmented; and 5) the terminal exopodal segment of leg 4 bears a prominent distolateral protuberance...
October 11, 2016: Zootaxa
https://www.readbyqxmd.com/read/27811789/a-new-species-of-ergasilus-von-nordmann-1832-copepoda-cyclopoida-%C3%A2-from-the-gills-of-a-dasyatid-ray-himantura-oxyrhyncha-sauvage-1878-from-west-kalimantan-indonesia
#7
Geoffrey A Boxshall
A new species of the cyclopoid copepod genus Ergasilus von Nordmann, 1832 is described based on material collected from the gills of an elasmobranch, Himantura oxyrhyncha (Sauvage, 1878), collected in the Java Sea off the coast of West Kalimantan, Indonesia. To justify the establishment of the new species, Ergasilus kimi sp. nov., detailed comparisons are made with the 28 congeneric species that share the combination of a 3-segmented leg 1 endopod and the presence of 2 setae on the free exopodal segment of leg 5...
October 11, 2016: Zootaxa
https://www.readbyqxmd.com/read/27770640/potential-of-the-small-cyclopoid-copepod-paracyclopina-nana-as-an-invertebrate-model-for-ecotoxicity-testing
#8
Hans-Uwe Dahms, Eun-Ji Won, Hui-Su Kim, Jeonghoon Han, Heum Gi Park, Sami Souissi, Sheikh Raisuddin, Jae-Seong Lee
Aquatic invertebrates contribute significantly to environmental impact assessment of contaminants in aquatic ecosystems. Much effort has been made to identify viable and ecologically relevant invertebrate test organisms to meet rigorous regulatory requirements. Copepods, which are ecologically important and widely distributed in aquatic organisms, offer a huge opportunity as test organisms for aquatic toxicity testing. They have a major role not only in the transfer of energy in aquatic food chains, but also as a medium of transfer of aquatic pollutants across the tropic levels...
October 14, 2016: Aquatic Toxicology
https://www.readbyqxmd.com/read/27752916/sensitivity-of-plankton-indices-to-lake-trophic-conditions
#9
A Ochocka, A Pasztaleniec
Herein, we report the response of indices based on phytoplankton and zooplankton and their combination to different nutrient concentrations in lakes. The study was carried out in ten lakes in northeastern Poland. Integrated samples were collected from the epilimnion during the summer of 2012-2013. Secchi disk visibility (SD), total phosphorus (TP), total nitrogen (TN), and chlorophyll a were used as proxies for eutrophication. We calculated 16 plankton indices: two phytoplankton indices, six crustacean indices, five rotiferan indices, two zooplankton diversity indices, and one combined phytoplankton and zooplankton index...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27701325/occurrence-of-epistylis-anastatica-linnaeus-1767-ciliophora-peritrichia-on-mesocyclops-isabellae-dussart-fernando-crustacea-copepoda-cyclopoida-in-india-with-an-annotated-checklist-of-species-of-epistylis-reported-as-epibionts-of-cyclopoid-copepods-and-resources
#10
John C Clamp, Tapas Chatterjee, Gregorio Fernandez-Leborans
The colonial peritrich ciliate Epistylis anastatica (Linnaeus, 1767) was discovered living as an epibiont on Mesocyclops isabellae Dussart & Fernando, 1988 collected from a pond in Andhra Pradesh state, India. This is the first report of Epistylis on this host, and a description of its morphological characteristics is provided. The biomass of colonies of E. anastatica relative to that of their hosts was relatively high, being greater than that of the host in some cases (8.11 mm<sup>3</sup> vs. 1...
September 16, 2016: Zootaxa
https://www.readbyqxmd.com/read/27551196/taxonomic-evaluation-of-eleven-species-of-microcyclops-claus-1893-copepoda-cyclopoida-and-description-of-microcyclops-inarmatus-sp-n-from-america
#11
Martha Angélica Gutiérrez-Aguirre, Adrián Cervantes-Martínez
Description and meristic analysis of eleven species of Microcyclops recorded in America were performed based on the examination of type specimens and fresh material. Microscopic analysis of oral appendages, such as the shape and armature of the distal coxal endite of the maxilla, the ornamentation on the caudal surface of the antenna, and the intercoxal sclerites and armament of the inner basis of all swimming appendages, were characteristics that allowed the differentiation between species. Among these species, our study confirmed the synonymy of Microcyclops diversus Kiefer, 1935 with Microcyclops ceibaensis (Marsh, 1919)...
2016: ZooKeys
https://www.readbyqxmd.com/read/27549575/morphological-and-molecular-identification-of-marine-copepod-dioithona-rigida-giesbrecht-1896-crustacea-cyclopoida-based-on-mitochondrial-coi-gene-sequences-from-lakshadweep-sea-india
#12
R Radhika, S Bijoy Nandan, M Harikrishnan
Morphological identification of the marine cyclopoid copepod Dioithona rigida in combination with sequencing a 645 bp fragment of mitochondrial cytochrome oxidase c subunit I (mtCOI) gene, collected from offshore waters of Kavarathi Island, Lakshadweep Sea, is presented in this study. Kiefer in 1935 classified Dioithona as a separate genus from Oithona. The main distinguishing characters observed in the collected samples, such as the presence of well-developed P5 with 2 setae, 5 segmented urosome, 12 segmented antennule, compact dagger-like setae on the inner margin of proximal segment of exopod ramus in P1-P4 and engorged portion of P1-bearing a spine, confirmed their morphology to D...
August 23, 2016: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
https://www.readbyqxmd.com/read/27383475/dna-barcoding-of-metazoan-zooplankton-copepods-from-south-korea
#13
Su Youn Baek, Kuem Hee Jang, Eun Hwa Choi, Shi Hyun Ryu, Sang Ki Kim, Jin Hee Lee, Young Jin Lim, Jimin Lee, Jumin Jun, Myounghai Kwak, Young-Sup Lee, Jae-Sam Hwang, Balu Alagar Venmathi Maran, Cheon Young Chang, Il-Hoi Kim, Ui Wook Hwang
Copepods, small aquatic crustaceans, are the most abundant metazoan zooplankton and outnumber every other group of multicellular animals on earth. In spite of ecological and biological importance in aquatic environment, their morphological plasticity, originated from their various lifestyles and their incomparable capacity to adapt to a variety of environments, has made the identification of species challenging, even for expert taxonomists. Molecular approaches to species identification have allowed rapid detection, discrimination, and identification of cryptic or sibling species based on DNA sequence data...
2016: PloS One
https://www.readbyqxmd.com/read/27221003/a-new-species-of-leposphilus-hesse-1866-copepoda-philichthyidae-parasitic-in-the-interorbital-canals-of-the-whitemouth-croaker-micropogonias-furnieri-desmarest-sciaenidae-off-brazil-with-an-amended-diagnosis-of-the-genus
#14
Fabiano Paschoal, Kazuya Nagasawa, José Luis Luque
A new species of the monotypic genus Leposphilus Hesse, 1866 (Cyclopoida: Philichthyidae), Leposphilus vogti n. sp., is described based on adult female and male specimens from the interorbital canals of Micropogonias furnieri (Desmarest) (Sciaenidae) in Sepetiba Bay, State of Rio de Janeiro, Brazil. The new species differs from its only congener, L. labrei Hesse, 1866, by the following combination of characters in the adult female: a globular cephalosome, a two-segmented maxilla, and fourth abdominal somite fused to caudal ramus; and in the adult male: presence of maxilliped, leg 3 with five setae, and caudal rami tipped with six setae...
June 2016: Systematic Parasitology
https://www.readbyqxmd.com/read/27081340/corrigenda-cepeda-gd-sabatini-me-scioscia-cl-ram%C3%A3-rez-fc-vi%C3%A3-as-md-2016-on-the-uncertainty-beneath-the-name-oithona-similis-claus-1866-copepoda-cyclopoida-zookeys-552-1-15-doi-10-3897-zookeys-552-6083
#15
Georgina D Cepeda, Marina E Sabatini, Cristina L Scioscia, Fernando C Ramírez, María D Viñas
[This corrects the article DOI: 10.3897/zookeys.552.6083.].
2016: ZooKeys
https://www.readbyqxmd.com/read/26865812/on-the-uncertainty-beneath-the-name-oithona-similis-claus-1866-copepoda-cyclopoida
#16
REVIEW
Georgina D Cepeda, Marina E Sabatini, Cristina L Scioscia, Fernando C Ramírez, María D Viñas
The marine cyclopoid Oithona similis sensu lato Claus, 1866, is considered to be one of the most abundant and ubiquitous copepods in the world. However, its minimal original diagnosis and the unclear connection with its (subjective) senior synonym Oithona helgolandica Claus, 1863, may have caused frequent misidentification of the species. Consequently, it seems possible that several closely related but distinct forms are being named Oithona similis or Oithona helgolandica without explicit and accurate discrimination...
2016: ZooKeys
https://www.readbyqxmd.com/read/26790683/parasitic-copepods-from-egyptian-red-sea-fishes-bomolochidae-claus-1875
#17
Hoda Hassan El-Rashidy, Geoffrey Allan Boxshall
Two species of parasitic copepods from the genus Bomolochus von Nordmann, 1832 (Cyclopoida: Bomolochidae) are redescribed in detail, based on material collected from the gills of Red Sea fishes. Host material was caught at El-tor, near Sharm El-Sheikh, and in the Gulf of Suez, Egypt. Both sexes of Bomolochus bellones Burmeister, 1835 were collected from the gills of a needlefish Tylosurus choram (Rüppell) caught in the Gulf of Suez. This is a new host record. The female is well characterised so only the male is described...
February 2016: Systematic Parasitology
https://www.readbyqxmd.com/read/26446546/a-new-species-of-ergasilus-nordmann-1832-copepoda-cyclopoida-ergasilidae-from-bryconops-giacopinii-fern%C3%A3-ndez-y%C3%A3-pez-characidae-in-the-vichada-river-basin-colombia
#18
Felipe Muriel-Hoyos, Ana María Santana-Piñeros, Yanis Cruz-Quintana, Eduardo Suárez-Morales
A new copepod species, Ergasilus curticrus n. sp. is described based on 14 female specimens collected from the gills of the characid teleost Bryconops giacopinii Fernández-Yépez, captured in the Vichada River Basin in Colombia. The new species has a unique combination of characters including: (i) 2-segmented endopods in legs 1 and 4; (ii) a semi-pinnate, falciform seta on the terminal segment of the first leg exopod; (iii) a 1-segmented fourth leg exopod; (iv) a reduced fifth leg with a single seta; and (v) a circular structure fused to a groove near the lateral margins of the second pedigerous tergite...
November 2015: Systematic Parasitology
https://www.readbyqxmd.com/read/26358074/a-new-species-of-anchistrotos-brian-1906-copepoda-cyclopoida-taeniacanthidae-from-the-filamentous-shrimpgoby-myersina-filifer-valenciennes-perciformes-gobiidae-in-korean-waters
#19
Seong Yong Moon, Jeong-Hoon Lee, Doo Nam Kim
A new species of Anchistrotos Brian, 1906 (Copepoda: Cyclopoida: Taeniacanthidae), parasitic in the branchial cavities of the filamentous shrimpgoby Myersina filifer (Valenciennes) (Perciformes: Gobiidae) from Korea is described. The new species is most closely related to A. tangi Venmathi Maran, Moon & Adday, 2014, but differs from it by the following combination of characters in the adult female: the U-shaped rostrum, the distal margin of the anal somite lacks patches of spinules, the proximal segment of the maxilliped is without seta, and the maxilliped claw is armed with long and small naked setae...
October 2015: Systematic Parasitology
https://www.readbyqxmd.com/read/25826070/first-record-of-association-of-copepods-with-highly-venomous-box-jellyfish-chironex-with-description-of-new-species-of-paramacrochiron-cyclopoida-macrochironidae
#20
Susumu Ohtsuka, Ephrime Metillo, Geoffrey A Boxshall
Paramacrochiron chironecicola n. sp. (Copepoda: Cyclopoida: Macrochironidae) is described from the highly venomous box jellyfish Chironex sp. collected from Malampaya Sound, Palawan Island, The Philippines. This is the first record of copepods associated with cubozoan medusae, although other cnidarian groups such scyphozoans, hydrozoans, and anthozoans are common hosts for symbiotic copepods. The infection sites were on the subumbrella, pedalium, and rhopalium, but also rarely on the adradial furrow. The new species is distinguished from other congeners by a combination of the following features: (1) the fifth pedigerous somite dorsally covering the anterior part of the female genital double-somite; (2) the fine structures of the antenna (relative lengths of segments) and maxilliped (positions of terminal elements) of the female; (3) the relatively long outer spines on the exopodal segments of legs 1-4; (4) the relatively long and thick female leg 5 bearing a long protopodal seta which reaches to the distal margin of the exopod; (5) the relatively short caudal ramus in the female; and (6) the plump prosome and short urosome in the male...
April 2015: Zoological Science
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