keyword
MENU ▼
Read by QxMD icon Read
search

Copepoda

keyword
https://www.readbyqxmd.com/read/28677150/histopathological-changes-on-the-gills-of-asp-aspius-aspius-and-european-catfish-silurus-glanis-caused-by-lamproglena-pulchella-and-a-lamproglena-sp-copepoda-lernaeidae-respectively
#1
K Molnár, A Avenant-Oldewage, B Sellyei, Á Varga, C Székely
In a parasitology survey of Hungarian fishes, heavy infections of parasitic copepods Lamproglena pulchella and a Lamproglena sp. were found in the gills of the asp and the European catfish, respectively. Individuals of both fish species were emaciated and infected with hundreds of Lamproglena. Copepods located close to the tip of gill filaments and formed a depression at the attachment sites. In histological sections, cell degenerations and local haemorrhages were present adjacent to the maxillipeds and where the maxillary claws pierced the gill tissue...
July 5, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28649318/zooplankton-communities-and-bythotrephes-longimanus-in-lakes-of-the-montane-region-of-the-northern-alps
#2
Zsófia Horváth, Csaba F Vad, Christian Preiler, Julia Birtel, Blake Matthews, Radka Ptáčníková, Robert Ptacnik
Lakes in the Alps represent a considerable fraction of nutrient-poor lakes in Central Europe, with unique biodiversity and ecosystem properties. Although some individual lakes are well-studied, less knowledge is available on large-scale patterns essential to generalise the understanding of their functioning. Here, we aimed to describe crustacean zooplankton communities (Cladocera, Copepoda) and identify their environmental drivers in the pelagic zone of 54 oligotrophic lakes in the montane region of the Alps (400-1200 m) in Austria, Germany, and Switzerland, covering a spatial scale of 650 km...
May 2, 2017: Inland Waters
https://www.readbyqxmd.com/read/28610128/review-of-i-pennella-i-oken-1816-copepoda-pennellidae-with-a-description-of-i-pennella-i-i-benzi-i-sp-nov-a-parasite-of-escolar-i-lepidocybium-i-i-flavobrunneum-i-pisces-in-the-northwest-atlantic-ocean
#3
W E Hogans
The genus Pennella Oken, 1816, mesoparasitic copepods from marine fish and mammals, is reviewed with the objective of determining the validity of members of the genus. Details of the external morphological structures of the adult female are presented. Pennella species are differentiated based on a combination of characters: the type of host parasitized, overall length of the parasite, shape, size and configuration of cephalothoracic papillae, segmentation of the first and second antenna, holdfast horn number, shape and configuration, and structure of the abdominal plumes...
March 17, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610056/a-new-asterocherid-genus-copepoda-siphonostomatoida-associated-with-i-callyspongia-i-duchassaing-amp-michelotti-and-reassessment-of-six-species-of-i-asterocheres-i-boeck
#4
Roberta Canário, Carlos Eduardo Falavigna DA Rocha, Elizabeth Neves, Rodrigo Johnsson
The family Asterocheridae Giesbrecht has several genera associated with sponges including Asterocheres Boeck, 1859. The type genus is commonly found in sponges but it is also recorded in echinoderms, bryozoans, and corals. A revision of the diagnosis of Asterocheres conducted in 2010 was the beginning of a reorganization process, culminating in the present status of 63 valid species. This study describes a new species and genus of the Asterocheridae. Neoasterocheres gen. nov. shares many characteristics with Asterocheres sensu stricto, except for the antennule segmentation which shows ancestral segments IX-XII fused to segment XIII...
March 27, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609898/fauna-of-cladocera-and-copepoda-from-xinjiang-uyghur-autonomous-region-china
#5
Elena S Chertoprud, Artem Y Sinev, Inta Dimante-Deimantovica
This study evaluates the species composition of Cladocera and Copepoda in the five lakes of the Bogda-Shan Mountain range and in the floodplain of the Tarim and Konchedarya rivers located in the Xinjiang Uygur Autonomous Region of China (Xinjiang). We collected seven species of Cladocera and six species of Copepoda. Seven species were identified as new for Xinjiang fauna, and two species (Cyclops cf. herberti Einsle, 1996, and Eucyclops roseus Ishida, 1997) were first records for China. Herein, we characterize the distribution ranges for the detected species and provide taxonomic remarks...
May 3, 2017: Zootaxa
https://www.readbyqxmd.com/read/28603248/revision-of-the-i-remaneicaris-i-i-argentina-i-group-copepoda-harpacticoida-parastenocarididae-supplementary-description-of-species-and-description-of-the-first-semi-terrestrial-i-remaneicaris-i-from-the-tropical-forest-of-southeast-mexico
#6
Paulo Henrique C Corgosinho, Nancy F Mercado-Salas, Pedro Martínez Arbizu, Edinaldo Nelson Dos Santos Silva, Terue C Kihara
Remaneicaris is a species-rich Neotropical monophyletic group, easily recognized by the synapomorphic position of the outer seta of the third exopodite of leg 4, localized at 2/3 of the outer margin. The genus, comprising 35 species in five monophyletic groups, plus R. ignotus and R. meyerabichi, retains an unusual set of plesiomorphic characters. Herein we supplement the descriptions of the species belonging to the Remaneicaris argentina-group, and describe a new species from the tropical forest of Southeast Mexico...
March 6, 2017: Zootaxa
https://www.readbyqxmd.com/read/28582411/ionotropic-receptors-signal-host-recognition-in-the-salmon-louse-lepeophtheirus-salmonis-copepoda
#7
Anna Z Komisarczuk, Sindre Grotmol, Frank Nilsen
A remarkable feature of many parasites is a high degree of host specificity but the mechanisms behind are poorly understood. A major challenge for parasites is to identify and infect a suitable host. Many species show a high degree of host specificity, being able to survive only on one or a few related host species. To facilitate transmission, parasite's behavior and reproduction has been fine tuned to maximize the likelihood of infection of a suitable host. For some species chemical cues that trigger or attract the parasite in question have been identified but how metazoan parasites themselves receive these signals remains unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28573548/redescription-of-tripaphylus-musteli-van-beneden-1851-copepoda-sphyriidae-and-the-relegation-of-paeon-wilson-1919-to-synonymy-with-tripaphylus-richiardi-in-anonymous-1878
#8
George W Benz, Geoffrey A Boxshall
Tripaphylus musteli (van Beneden, 1851) (Copepoda, Siphonostomatoida, Sphyriidae) is redescribed from an adult female collected from the branchial chamber of a starry smooth-hound, Mustelus asterias Cloquet (Carcharhiniformes, Triakidae), captured in the English Channel off Portland, UK. The new account of T. musteli is the first based on a complete adult female and highlighted the lack of a robust distinction separating Tripaphylus Richiardi, in Anonymous, 1878 and Paeon Wilson, 1919 prompting us to relegate Paeon to a junior subjective synonym of Tripaphylus...
July 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28529408/wind-dispersal-results-in-a-gradient-of-dispersal-limitation-and-environmental-match-among-discrete-aquatic-habitats
#9
Zsófia Horváth, Csaba F Vad, Robert Ptacnik
Directional dispersal by wind and other dispersal agents may generate spatial patterns in passively dispersing metacommunities which cannot be detected by classical eigenvector methods based on Euclidean distances. We analysed zooplankton communities (Rotifera, Cladocera, Copepoda) in a cluster of soda pans distributed over a short spatial scale of 18 km and tested explicitly for directional signals in their spatial configuration. The study area is exposed to a prevailing northwestern wind direction. By applying asymmetric eigenvector maps (AEM), we were able to identify corresponding directionality in the spatial structure of communities...
August 2016: Ecography
https://www.readbyqxmd.com/read/28497195/olfaction-in-a-viscous-environment-the-color-of-sexual-smells-in-temora-longicornis
#10
Peter Hinow, J Rudi Strickler, Jeannette Yen
We investigate chemical aspects of mating in the marine copepod Temora longicornis (Copepoda, Calanoidea). Our emphasis is the female pheromone signaling in form of well-defined trails for males to follow, observed in Doall et al. (Phil Trans R Soc Lond B 353:681-689, 1998). The viscous environment and the properties of the odorants play important roles as the spread of the pheromone trail limits the time during which it is useful for tracing. A key observation from our earlier work is the ability of a searching male to detect the direction of the female and to correct its swimming direction if necessary...
June 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/28441395/molecular-phylogeny-of-oncaeidae-copepoda-using-nuclear-ribosomal-internal-transcribed-spacer-its-rdna
#11
Iole Di Capua, Fulvio Maffucci, Raimondo Pannone, Maria Grazia Mazzocchi, Elio Biffali, Alberto Amato
Copepods belonging to the Oncaeidae family are commonly and abundantly found in marine zooplankton. In the Mediterranean Sea, forty-seven oncaeid species occur, of which eleven in the Gulf of Naples. In this Gulf, several Oncaea species were morphologically analysed and described at the end of the XIX century by W. Giesbrecht. In the same area, oncaeids are being investigated over seasonal and inter-annual scales at the long-term coastal station LTER-MC. In the present work, we identified six oncaeid species using the nuclear ribosomal internal transcribed spacers (ITS rDNA) and the mitochondrial cytochrome c oxidase subunit I (mtCOI)...
2017: PloS One
https://www.readbyqxmd.com/read/28431210/exotic-gill-lice-species-copepoda-lernaeopodidae-salmincola-spp-infect-rainbow-trout-oncorhynchus-mykiss-and-brook-trout-salvelinus-fontinalis-in-the-southeastern-united-states
#12
Carlos F Ruiz, Jacob M Rash, Doug A Besler, Jackson R Roberts, Micah B Warren, Cova R Arias, Stephen A Bullard
Salmincola californiensis infected 25 of 31 (prevalence 0.8; intensity 2-35 [mean 6.6 ± standard deviation 7.7; n = 25]) rainbow trout, Oncorhynchus mykiss, from a private trout farm connected to the Watauga River, North Carolina. Salmincola edwardsii infected all of 9 (1.0; 2-43 [9.3 ± 13.0; 9]) brook trout, Salvelinus fontinalis, from Big Norton Prong, a tributary of the Little Tennessee River, North Carolina. Both lernaeopodids are well-known salmonid pathogens but neither is native to, nor has been previously taxonomically confirmed from, the southeastern United States...
April 21, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28331408/on-some-new-species-of-ancorabolidae-sars-1909-from-the-gulf-of-california-the-genera-ceratonotus-sars-1909-and-dendropsyllus-conroy-dalton-2003-crustacea-copepoda-harpacticoida
#13
Samuel Gómez, Karen Díaz
Two new species of two genera of the family Ancorabolidae, Ceratonotus elongatussp. n. and Dendropsyllus californiensissp. n., found at 1642 m and 1759 m depth, respectively, in the Southern Trough of Guaymas Basin, are described. Ceratonotus elongatussp. n. was attributed to that genus by a series of character states of which the lack of dendroid dorsal processes on the P6-bearing somite and the presence of such processes on the first abdominal somite were definitive. This species was observed to be very close to Ceratonotus thistlei Conroy-Dalton, 2003 from the San Diego Trough, and can be separated by a number of traits of which the elongated sensilla-bearing dorsal tubercles on the second abdominal somite in the new species was definitive...
2017: ZooKeys
https://www.readbyqxmd.com/read/28322205/factors-influencing-the-long-term-dynamics-of-larval-sea-lice-density-at-east-and-west-coast-locations-in-scotland
#14
Anna J Harte, Alan S Bowman, Nabeil K G Salama, Campbell C Pert
Sea lice (Copepoda: Caligidae) are marine copepods that parasitize finfish, and in cases of high infestation can result in severe epithelial damage and mortality. In Scotland, 2 species of sea louse, Lepeophtheirus salmonis and Caligus elongatus, pose a significant economic burden to the marine Atlantic salmon aquaculture industry and potentially impact wild salmonids. The purpose of this study was to determine how the density of pelagic sea lice is affected by external variables, in order to improve our understanding of sea lice dynamics...
March 21, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28316385/spatial-distribution-of-ectoparasites-on-the-gills-of-the-mullet-liza-macrolepis-the-effects-of-pollution
#15
Ruchika Kumar, Rokkam Madhavi, Bade Sailaja
Spatial distribution of ectoparasites on the gills of the mullet Liza macrolepis collected from two sites, the unpolluted reference site (Site I) and the heavily polluted North western arm of Visakhapatnam harbour (Site II), was analysed. Of the various ectoparasite species found on the gills of the mullet, only Ancyrocephalus vanbenedeni (Monogenea) and Dermergasilus varicoleus (Copepoda), occurred commonly at both the sites with more or less high prevalence and mean intensity. A. vanbenedeni at site I preferred gill arch 1 and posterior most and central sections, whereas at site II, it showed preference for gill arch 3, and posterior and proximal sections of the gill...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28231343/occurrence-of-mitochondrial-co1-pseudogenes-in-neocalanus-plumchrus-crustacea-copepoda-hybridization-indicated-by-recombined-nuclear-mitochondrial-pseudogenes
#16
Ryuji J Machida, Ya-Ying Lin
A portion of the mitochondrial cytochrome c oxidase I gene was sequenced using both genomic DNA and complement DNA from three planktonic copepod Neocalanus species (N. cristatus, N. plumchrus, and N. flemingeri). Small but critical sequence differences in CO1 were observed between gDNA and cDNA from N. plumchrus. Furthermore, careful observation revealed the presence of recombination between sequences in gDNA from N. plumchrus. Moreover, a chimera of the N. cristatus and N. plumchrus sequences was obtained from N...
2017: PloS One
https://www.readbyqxmd.com/read/28187650/amended-diagnosis-of-the-genus-i-nannodiaptomus-i-copepoda-calanoida-%C3%A2-based-on-redescription-of-i-n-phongnhaensis-i-and-description-of-a-new-species-from-caves-in-central-vietnam
#17
Duc Luong Tran, Anton Brancelj
Nannodiaptomus phongnhaensis Dang & Ho, 2001, an endemic stygobiotic diaptomid from Vietnam and the type species of the genus Nannodiaptomus Dang & Ho, 2001, is redescribed on the basis of a new material from its type locality: Hang Phong Nha Cave, Quang Binh province, central Vietnam. We also designated a neotype, because the type material has been lost. The diagnosis of the genus is amended, based on the description of the neotype. The taxonomic position of the genus in the subfamily Speodiaptominae is proposed, and its relationships with other genera of this subfamily are discussed...
January 19, 2017: Zootaxa
https://www.readbyqxmd.com/read/28187560/revision-of-family-megacalanidae-copepoda-calanoida
#18
Janet M Bradford-Grieve, Leocadio Blanco-Bercial, Geoffrey A Boxshall
The Megacalanidae were revised based on new and archived material. Taxonomic confusion that has existed in the family is discussed and a method is suggested for stabilising names. A detailed examination of the morphology of this family, using the light microscope, has added further useful characters that distinguish genera and species. The added, hitherto undescribed species include character states incompatible with aspects of previous generic definitions (e.g. presence or absence of setae on the maxillule coxal endite)...
February 7, 2017: Zootaxa
https://www.readbyqxmd.com/read/28130672/a-new-species-of-hamaticolax-ho-lin-2006-copepoda-bomolochidae-from-deep-water-macrourids-in-the-mediterranean
#19
David Pérez-I-García, Maite Carrassón, Geoffrey Allan Boxshall
Hamaticolax resupinus n. sp. is described from specimens collected from the gill cavities of Coelorinchus mediterraneus Iwamoto & Ungaro and Coryphaenoides mediterraneus (Giglioli) (Gadiformes: Macrouridae) caught in the Western Mediterranean Sea at depths between 1,236 and 1,626 m. Hamaticolax resupinus n. sp. closely resembles H. maleus Oldewage, 1994, but differs from the latter by its smaller body size and in having a genital double-somite in the female that is markedly wider than the free abdominal somites and has strongly convex lateral margins...
February 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28130671/a-new-species-of-pseudopandarus-kirtisinghe-1950-copepoda-siphonostomatoida-pandaridae-from-sharks-of-the-genus-squalus-l-in-new-caledonian-waters
#20
James P Bernot, Geoffrey A Boxshall
Both sexes of a new species of pandarid copepod are described from sharks of the genus Squalus L. (Squaliformes: Squalidae). Specimens of Pseudopandarus cairae n. sp. were collected from Squalus bucephalus Last, Séret & Pogonoski and S. melanurus Fourmanoir & Rivaton in New Caledonian waters, the first parasitic copepod to be described from either host species. This is the eighth nominal species of Pseudopandarus Kirtisinghe, 1950 and the first to be described from a shark of the order Squaliformes. Pseudopandarus cairae n...
February 2017: Systematic Parasitology
keyword
keyword
40947
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"