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https://www.readbyqxmd.com/read/29288016/infestation-by-ergasilus-coatiarus-copepoda-ergasilidae-in-two-amazonian-cichlids-with-new-host-record-from-peru-an-ectoparasites-natural-control-approach
#1
Patrick D Mathews, Ana C M F Patta, Gabriella S Gama, Omar Mertins
The occurrence of copepods ergasilid was investigated in two species of cichlids of economic importance for aquaculture in the Amazon region: Cichla monoculus and Chaetobranchus semifasciatus. The fish were collected from a semi-intensive fish farm, near the city of Nauta, Loreto State, Peru. Copepods were found in the gill filaments of 44 of 85 specimens (51.7%) of C. monoculus and in eight of 30 (26.6%) specimens of C. semifasciatus. The parasite was identified as Ergasilus coatiarus based on its morphological features...
December 26, 2017: Comptes Rendus Biologies
https://www.readbyqxmd.com/read/29246806/characterization-of-three-salmon-louse-lepeophtheirus-salmonis-genes-with-fibronectin-ii-domains-expressed-by-tegumental-type-1-glands
#2
Ewa Harasimczuk, Aina-Cathrine Øvergård, Sindre Grotmol, Frank Nilsen, Sussie Dalvin
The salmon louse, Lepeophtheirus salmonis (Copepoda: Caligidae), is currently the most significant pathogen affecting the salmon farming industry in the Northern Hemisphere. Exocrine glands of blood-feeding parasites are believed to be important for the host-parasite interaction, but also in the production of substances for integument lubrication and antifouling. In L. salmonis; however, we have limited knowledge about the exocrine glands. The aim of this study was therefore to examine three genes containing fibronectin type II (FNII) domains expressed in L...
December 12, 2017: Molecular and Biochemical Parasitology
https://www.readbyqxmd.com/read/29245672/a-new-blind-groundwater-dwelling-genus-of-the-cladocera-crustacea-branchiopoda-from-the-korean-peninsula
#3
Hyun Gi Jeong, Artem Y Sinev, Anton Brancelj, Kwang-Hyeon Chang, Alexey A Kotov
Groundwater-dwelling Cladocera are to date known only from the caves and hyporheic zones of the rivers in Europe (Belgium, England, France, Bosnia and Herzegovina, Macedonia, Slovenia, Spain), Turkey (European part) and Arabian Peninsula (Yemen). All these animals belong to the subfamily Aloninae Dybowski & Grochowski of the family Chydoridae Dybowski & Grochowski (Cladocera: Anomopoda). Examination of some samples collected by our colleagues - experts in Copepoda, Bathynellidae and Amphipoda-in South Korea led us to discovery of a new stygobiotic alonine genus, which is also the first record of a groundwater-dwelling cladoceran in Asia...
November 1, 2017: Zootaxa
https://www.readbyqxmd.com/read/29245552/morphological-and-molecular-analyses-of-epikarstic-parastenocarididae-copepoda-harpacticoida-from-two-sicilian-caves-with-description-of-a-new-i-stammericaris-i
#4
Maria Cristina Bruno, Vezio Cottarelli, Heidi Christine Hauffe, Chiara Rossi, Ulrike Obertegger, Rosario Grasso, Maria Teresa Spena
We describe Stammericaris destillans sp. nov., and re-describe Stammericaris trinacriae (Pesce, Galassi and Cottarelli 1988) based on new material. The two species were collected from epikarstic drips and pools on the floor of two different caves: a karstic (Molara Cave) and a gypsum (Entella Cave) cave, respectively, both located in Sicily, Italy. We also report the presence of previously undescribed structures for Stammericaris amyclaea (Cottarelli 1969) and Stammericaris orcina (Chappuis 1938). Phylogenetic analyses of the mitochondrial COI and ribosomal 18S genes attributed the new species to Stammericaris Jakobi 1972, therefore the structure of the male P4 endopod of S...
November 17, 2017: Zootaxa
https://www.readbyqxmd.com/read/29245452/five-new-species-of-the-genus-i-nannopus-i-copepoda-harpacticoida-nannopodidae-from-intertidal-mudflats-of-the-korean-west-coast-yellow-sea
#5
Vinod Vakati, Wonchoel Lee
Five Nannopus Brady, 1880 species that are new to science are described from the intertidal mudflats of the Korean West Coast, Yellow Sea (South Korea). Nannopus minutus sp. nov. and N. dimorphicus sp. nov. belong to a group of species defined by seven elements on P4 exp-3, and these two species are unique by the pinnate caudal seta III. These species differ in the number of dorsal integumental windows on the cephalothorax (three in N. minutus, one in N. dimorphicus), shape of the distal small seta on the P4 endopod (naked in N...
December 1, 2017: Zootaxa
https://www.readbyqxmd.com/read/29245413/a-new-i-setacheres-i-copepoda-siphonostomatoida-asterocheridae-associated-with-i-ircinia-i-felix-duchassaing-amp-michelotti-porifera-from-brazil
#6
Camila C Borges, Elizabeth G Neves, Rodrigo Johnsson
Recent surveys of the copepod fauna associated with the sponge Ircinia felix (Porifera, Dictyoceratida) in Brazil resulted in the discovery of a new siphonostomatoid species belonging to a recently erected genus of Asterocheridae. Setacheres portobarrensis sp. nov. possesses a 21-segmented antennule, with 3 free distal segments, after the aesthetasc. The third exopodal segment of leg 3 shows a distal seta instead of a spine as in some other congeners. The new species shows several unique features on the third endopodal segment of the antenna, the mandibular stylet, the inner lobe of the maxillule, and setules and spinules located in specific regions of legs 1 to 4...
December 8, 2017: Zootaxa
https://www.readbyqxmd.com/read/29198410/combined-short-term-exposure-to-reduced-seawater-ph-and-elevated-temperature-induces-community-shifts-in-an-intertidal-meiobenthic-assemblage
#7
Lisa Mevenkamp, Ee Zin Ong, Carl Van Colen, Ann Vanreusel, Katja Guilini
In future global change scenarios the surface ocean will experience continuous acidification and rising temperatures. While effects of both stressors on marine, benthic communities are fairly well studied, consequences of the interaction of both factors remain largely unknown. We performed a short-term microcosm experiment exposing a soft-bottom community from an intertidal flat in the Westerscheldt estuary to two levels of seawater pH (ambient pHT = 7.9, reduced pHT = 7.5) and temperature (10 °C ambient and 13 °C elevated temperature) in a crossed design...
November 6, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/29185611/occurrence-of-metacaligus-rufus-wilson-1908-copepoda-caligidae-parasitizing-the-cownose-ray-rhinoptera-bonasus-mitchill-1815-elasmobranchii-myliobatidae-in-brazil
#8
R Ducatti, V Takatsuka, V G Azevedo, E G Sanches, F Paschoal, J L Luque
No abstract text is available yet for this article.
November 27, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/29181688/expanded-description-of-lamproglena-cleopatra-humes-1957-lernaeidae-copepoda-from-labeo-spp-cyprinidae-with-a-key-to-species-of-lamproglena-von-nordmann-1832
#9
Katlego D Kunutu, Sareh Tavakol, Ali Halajian, Chantelle Baker, Michela Paoletti, Richard A Heckmann, Wilmien J Luus-Powell
The occurrence of the copepod Lamproglena cleopatra Humes, 1957, parasitising freshwater fishes in the Limpopo River System is presented, along with new morphological data. This crustacean was originally described parasitising a cyprinid (Labeo forskalii Rüppell) from the River Nile, Egypt. During 2014-2015 crustacean samples were collected from the gills of three cyprinid fish species, Labeo rosae Steindachner from Flag Boshielo Dam, Labeo molybdinus Du Plessis from Nwanedi-Luphephe Dam in South Africa, and Labeo ruddi Boulenger from the River Bubye in Zimbabwe...
November 27, 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/29134016/a-new-species-of-notodiaptomus-from-the-ecuadorian-andes-copepoda-calanoida-diaptomidae
#10
Miguel Alonso, Edinaldo N Dos Santos-Silva, Damià Jaume
Notodiaptomus cannarensissp. n. is described from a reservoir on the Amazonian slope of the Ecuadorian Andes. The new species is unique among diaptomid calanoid copepods in the display of hypertrophied, symmetrical wing-like extensions at each side of the female composite genital somite. Furthermore, it displays a female urosome reduced to only two somites due to the incorporation of abdominal somites III and IV to the composite genital double-somite, and a male right fifth leg with the outer spine of second exopodal segment recurved and implanted proximally on margin...
2017: ZooKeys
https://www.readbyqxmd.com/read/29128528/amblyospora-khaliulini-microsporidia-amblyosporidae-investigations-on-its-life-cycle-and-ecology-in-aedes-communis-diptera-culicidae-and-acanthocyclops-vernalis-copepoda-cyclopidae-with-redescription-of-the-species
#11
Theodore G Andreadis, Michael C Thomas, John J Shepard
A multi-year study was conducted to examine the natural ecology of the microsporidium Amblyospora khaliulini and more fully characterize parasite development and histopathology in all stages of its primary mosquito host, Aedes communis and intermediate copepod host, Acanthocyclops vernalis with redescription of the species. A. khaliulini exhibits polymorphic development, produces three morphologically and functionally distinct spores, and is both horizontally and vertically transmitted. Development in A. vernalis is restricted to females, occurs within the ovaries and results in death of the host...
November 8, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29118642/a-new-species-of-mongolodiaptomus-kiefer-1938-from-northeast-thailand-and-a-key-to-the-species-crustacea-copepoda-calanoida-diaptomidae
#12
Santi Watiroyram, La-Orsri Sanoamuang
This study describes the new species Mongolodiaptomus loeiensissp. n. collected from a temporary pond nearby a cave located in Loei Province, in northeastern Thailand. Mongolodiaptomus loeiensissp. n. is similar to M. calcarus (Shen & Tai, 1965) in the male but can be distinguished from its congeners by the following unique characteristics in the males: (1) the right caudal ramus has 3 ventral chitinous prominences; (2) intercoxal plate of P5 is produced into 2 spine-like lobes on distal margin; (3) the basis of right P5 has a subglobular chitinous prominence on mid-distal caudal surface; and (4) the principal lateral spine on the right Exp-2 P5 is extremely bent at its tip...
2017: ZooKeys
https://www.readbyqxmd.com/read/29118635/a-new-species-of-monstrillopsis-crustacea-copepoda-monstrilloida-from-the-lower-northwest-passage-of-the-canadian-arctic
#13
Aurélie Delaforge, Eduardo Suárez-Morales, Wojciech Walkusz, Karley Campbell, C J Mundy
A new species of monstrilloid copepod, Monstrillopsis planifronssp. n., is described from an adult female that was collected beneath snow-covered sea ice during the 2014 Ice Covered Ecosystem - CAMbridge bay Process Study (ICE-CAMPS) in Dease Strait of the Canadian Arctic Archipelago. Currently, up to six species of this order are known to occur in polar latitudes. The new species described herein shares similarities with Monstrillopsis dubia (Scott, 1904) but differs in its body proportions and cephalothorax ornamentation; the cephalothorax is covered by minute scattered papillae on dorsal and ventral surfaces; this species has a reduced fifth leg endopod, fifth leg exopod armed with three setae, antennule with fused segments 3-4, and the genital double-somite bears unique posterolateral processes...
2017: ZooKeys
https://www.readbyqxmd.com/read/29110106/diversity-and-distribution-of-heterotrophic-dinoflagellates-from-the-coastal-waters-of-port-blair-south-andaman
#14
S Sai Elangovan, G Padmavati
The interaction between the environment and heterotrophic dinoflagellates inhabiting coastal waters of South Andaman was studied based on year round collections made during September 2012-August 2013 in the bay, eastern, and western region of South Andaman. The distribution pattern of microzooplankton in South Andaman showed high abundance in eutrophic waters (bay region) and gradually decreased towards the off shore region. Microzooplankton community comprised of six different taxa, viz. tintinnids, heterotrophic dinoflagellates, non-loricate ciliates, Foraminifera, Rotifera, and Copepoda (nauplii)...
November 6, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28921570/behavioural-responses-of-infective-stage-copepodids-of-the-salmon-louse-lepeophtheirus-salmonis-copepoda-caligidae-to-host-related-sensory-cues
#15
D M Fields, A B Skiftesvik, H I Browman
The salmon louse (Lepeophtheirus salmonis [Krøyer]) is an ectoparasitic copepod that causes disease in farmed Atlantic salmon (Salmo salar) and may play a role in the decline of some wild salmonid populations. Controlling lice infestations is a major cost for the salmon industry; this has stimulated the pursuit of alternative approaches to controlling them. One such approach involves determining, and then disrupting, the sensory cues used by the parasite to find its host. In this context, we examined the behavioural responses of lice copepodids to light flicker-simulating light reflecting from the sides of the salmon host and/or the shadows cast by fish passing overhead-and water-soluble chemicals released from the skin of the salmon...
September 17, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28895011/caligus-fajerae-n-sp-copepoda-caligidae-parasitic-on-the-pacific-sierra-scomberomurus-sierra-jordan-starks-actinopterygii-scombridae-in-the-pacific-ocean-off-mexico
#16
Francisco Neptalí Morales-Serna, Alejandro Oceguera-Figueroa, Danny Tang
A new species of parasitic copepod, Caligus fajerae n. sp. (Caligidae), is described from Scomberomorus sierra Jordan & Starks (Scombridae) caught off the northwestern coast of Mexico. The new species morphologically resembles Caligus cybii Bassett-Smith, 1898, Caligus kanagurta Pillai, 1961, Caligus pelamydis Krøyer, 1863 and Caligus robustus Bassett-Smith, 1898, all of which have been reported from scombrid hosts. Caligus fajerae n. sp. differs from these species by having spinules on the abdomen and caudal ramus, two processes on the proximal antennulary segment, fine striations on the claw of the antenna and maxilliped, a stouter and more recurved maxillulary dentiform process, shorter tines on the sternal furca, two additional patches of spinules on the distal endopodal segment of leg 2, a sclerotised lobe on the anteromedian surface of the leg 3 protopod and serrations on both margins of the first exopodal spine of leg 3...
October 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28831035/molecular-phylogeny-and-revision-of-copepod-orders-crustacea-copepoda
#17
Sahar Khodami, J Vaun McArthur, Leocadio Blanco-Bercial, Pedro Martinez Arbizu
For the first time, the phylogenetic relationships between representatives of all 10 copepod orders have been investigated using 28S and 18S rRNA, Histone H3 protein and COI mtDNA. The monophyly of Copepoda (including Platycopioida Fosshagen, 1985) is demonstrated for the first time using molecular data. Maxillopoda is rejected, as it is a polyphyletic group. The monophyly of the major subgroups of Copepoda, including Progymnoplea Lang, 1948 (=Platycopioida); Neocopepoda Huys and Boxshall, 1991; Gymnoplea Giesbrecht, 1892 (=Calanoida Sars, 1903); and Podoplea Giesbrecht, 1892, are supported in this study...
August 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28769694/a-new-species-of-notodiaptomus-from-the-amazon-basin-crustacea-copepoda-calanoida-diaptomidae
#18
Daniel Previattelli, Gilmar Perbiche-Neves, Carlos E F da Rocha
A new Diaptomidae species is presented from the Neotropical region. It was found in two Amazonian lakes, Ressaca and Arapujá, both in Pará State, Brazil. The lakes are 400 km apart and threatened by the building of reservoirs for hydropower generation and pollution by human settlements. The new species resembles N. paraensis Dussart & Robertson, 1984, but it can be distinguished from this species and other congeners in having a special process on the fifth leg basis of the male, by the place of insertion of lateral spine in the last segment of right P5 of male, the shape and relationship between length and width of segments of male and female P5 exopodite 2 with stout inner process bearing short setules and outer small spine, exopodite 3, with two terminal setae, outer smaller; endopodite 1-segmented with one subterminal seta and oblique comb of spinules, the presence of a line of dorsal spinules at the distal margin of thoracic somites in both sexes...
2017: ZooKeys
https://www.readbyqxmd.com/read/28769658/a-new-anchialine-stephos-scott-from-the-yucatan-peninsula-with-notes-on-the-biogeography-and-diversity-of-the-genus-copepoda-calanoida-stephidae
#19
Eduardo Suárez-Morales, Martha A Gutiérrez-Aguirre, Adrián Cervantes-Martínez, Thomas M Iliffe
Surveys of the anchialine crustacean fauna of the Yucatan Peninsula (YP), Mexico, have revealed the occurrence of calanoid copepods. The genus Stephos Scott, 1892, belonging to the family Stephidae is among the most frequent and widely distributed groups in anchialine caves but has not been hitherto recorded from the YP. Recent collections from an anchialine cave in an island off the northern coast of the YP yielded many specimens of a new species of Stephos. The new taxon, S. fernandoisp. n., is described here based on male and female specimens...
2017: ZooKeys
https://www.readbyqxmd.com/read/28769625/two-new-species-of-leptopsyllus-from-korea-copepoda-harpacticoida-paramesochridae
#20
Jinwook Back, Wonchoel Lee
Two new species of Leptopsyllus are described from the subtidal zone of Korea. Both species were assigned to the subgenus Leptopsyllus (Leptopsyllus) T. Scott, 1894, based on following three characters: two-segmented rami of P1, absence of endopod on P2 and P3, and presence of one-segmented endopod of P4. L. (L.) pundius sp. n. is most closely related to L. (L.) punctatus Mielke, 1894, however clearly distinguishable from it based on mandibular exopod with two setae, shape of P6, and caudal seta III ornamented with spinules in the new species...
2017: ZooKeys
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