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1.
Syst Parasitol ; 96(9): 799-804, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-31721054

RESUMEN

Kabata separated species of Pseudocharopinus Kabata, 1964 and Charopinus Krøyer, 1863 in 1964 based mainly on four characteristics. Currently Pseudocharopinus has 11 species while Charopinus consists of three species considered valid. Pseudocharopinus malleus (Rudolphi in Nordmann, 1832) and Charopinus dubius T. Scott, 1900 were collected and studied from hosts off South Africa. Additional to previous reports from South African waters, P. malleus is reported from Torpedo sinuspersici Olfers and T. fuscomaculata Peters while C. dubius is reported from Leucoraja wallacei (Hulley) and Rajella dissimilis (Hulley), all new host records. In an attempt to estimate the evolutionary relationships among Pseudocharopinus spp. a cladistic analysis was performed by means of parsimony using described and illustrated features of the adult females. Due to the mostly unresolved 50% majority rule tree, a key for the identification of the adult females of Pseudocharopinus spp. is compiled. Additionally, a key for the identification of adult females of Charopinus spp. is provided.


Asunto(s)
Clasificación , Copépodos/clasificación , Filogenia , /parasitología , Animales , Copépodos/anatomía & histología , Femenino , Especificidad de la Especie
2.
Syst Parasitol ; 96(9): 777-788, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-31654292

RESUMEN

A new species of parasitic copepod, Echthrogaleus spinulus n. sp. (Pandaridae), is described from the torpedo ray Tetronarce tokionis (Tanaka) (Torpedinidae) captured in pelagic Hawaiian waters. The new species has pediger 4 bearing large dorsal plates with denticles on posterior margin, genital complex with posterolateral lobes widely curved medially and overlapping, leg 4 exopod incompletely 3-segmented, and the largest body size (maximum length 16 mm from anterior rim of frontal plates to tip of caudal rami, excluding setae). This morphology does not match any of the seven valid species of Echthrogaleus Steenstrup & Lütken, 1861. Analysis of 28S rDNA sequences separated the new material from the Central Pacific from samples of E. coleoptratus in the Atlantic and Eastern Pacific Oceans. However, due to the lack of DNA sequences in the databases, the new 28S rDNA sequence cannot used to confirm the species identity. The unique morphological characteristics of the Central Pacific female copepods combined with 28S rDNA sequencing was used as a basis to validate the new species.


Asunto(s)
Copépodos/clasificación , Torpedo/parasitología , Animales , Copépodos/anatomía & histología , Copépodos/genética , Femenino , Hawaii , Océano Pacífico , ARN Ribosómico 28S/efectos de los fármacos , ARN Ribosómico 28S/genética , Especificidad de la Especie
3.
Syst Parasitol ; 96(8): 715-722, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31515681

RESUMEN

A new species of Dermoergasilus Ho & Do, 1982 (Copepoda: Ergasilidae) parasitic on the gills of the redbelly tilapia Coptodon zillii (Gervais) from Basrah, southern Iraq, is described. Dermoergasilus cichlidus n. sp. is morphologically similar to D. longiabdominalis El-Rashidy & Boxshall, 2001 in the body length to width ratio, the swimming legs armature, the shape of the urosome and the small slightly spiniform seta on the exopodal segment of leg 5. However, the main differences are the presence of long setae on the endopod of leg 1 in D. cichlidus n. sp. (vs relatively short setae); the inner apical spine on the tip of the endopod of leg 1 being only slightly longer than the outer apical spine (vs inner apical spine about twice as long as the outer); the first interpodal sternite ornamented with spinules (vs interpodal sternites not ornamented); and the caudal rami and anal somite of equal length (vs caudal rami length c.2/3 of the length of the anal somite). Dermoergasilus occidentalis can be distinguished from D. cichlidus n. sp. by the relative length of the antennal segments, the absence of a minute terminal spine on the digital process of the caudal ramus and by differences in the mouth parts.


Asunto(s)
Copépodos/clasificación , Copépodos/fisiología , Tilapia/parasitología , Animales , Copépodos/anatomía & histología , Branquias/parasitología , Irak , Especificidad de la Especie
4.
Appl Opt ; 58(26): 7022-7027, 2019 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-31503970

RESUMEN

We present autofluorescence of six zooplankton species, including salmon lice (Lepeophtheirus salmonis), for the purpose of classification in marine environments. Using a 410 nm excitation wavelength, we find that all measured zooplankton species exhibit broad cyan fluorescence centered around 510-520 nm. Furthermore, salmon lice show an absence of red fluorescence from undigested chlorophyll, which is measured from the gut of the herbivorous zooplankton species. We show the capability to distinguish noneating species, including salmon lice, from algae-eating species using a dual-band analysis of the fluorescence spectra. This shows the potential of autofluorescence as an important signature in real-time monitoring and classification of salmon lice.


Asunto(s)
Copépodos/clasificación , Zooplancton/fisiología , Animales , Larva/fisiología , Espectrometría de Fluorescencia
5.
Syst Parasitol ; 96(7): 603-616, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-31372880

RESUMEN

Lepeophtheirus lichiae Barnard, 1948 (Copepoda: Caligidae), a very rare and poorly known sea louse, is redescribed based on a single newly collected female. The specimen was collected from the dorsal body surface of the leerfish, Lichia amia (Linnaeus) caught in north-eastern Mediterranean waters off the Turkish coast. The original and only available description of L. lichiae was incomplete and with only three illustrations: the dorsal view of the female habitus, the sternal furca, and the postantennal process. Here, we present a full re-description of female of L. lichiae and report it from the Mediterranean Sea for the first time.


Asunto(s)
Copépodos/clasificación , Copépodos/fisiología , Perciformes/parasitología , Animales , Copépodos/citología , Femenino , Mar Mediterráneo , Especificidad de la Especie
6.
Environ Pollut ; 251: 277-284, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31082612

RESUMEN

A comparative limnological study of the zooplankton communities and their relationship with environmental factors was conducted to test the temporal and spatial changes among lake groups. In our study of four lakes, the lowest gamma (γ) diversity was recorded in January 2017, with a total of 25 zooplankton taxa. The highest γ diversity was recorded in May 2016, with a total of 55 zooplankton taxa. Species turnover in space (ß) were from 14.98 to 25.81. Markedly temporal and spatial variations were observed in the zooplankton community. The higher mean cladocera density (57.70 ind. L-1 and 39.85 ind. L-1) was observed in May and August, then decreased gradually with the lowest in January. The mean copepoda density ranged from 8.71 ind. L-1 in January 2017 to 32.04 ind. L-1 in August 2016. The mean rotifera density was significantly higher than that of the other two crustacean zooplankton (p < 0.01), within the range of 89.36-1139.2 ind. L-1. We also observed that zooplankton density exhibited significant seasonal changes from NMDS (Nonmetric multidimensional scaling analysis). Redundancy analysis revealed that environmental factors, such as water temperature and transparency, have significantly influenced the zooplankton community structure.


Asunto(s)
Cladóceros/clasificación , Copépodos/clasificación , Monitoreo del Ambiente/métodos , Lagos/química , Rotíferos/clasificación , Zooplancton/clasificación , Animales , Biodiversidad , China , Densidad de Población , Ríos/química , Estaciones del Año , Análisis Espacio-Temporal , Temperatura Ambiental
7.
Mol Phylogenet Evol ; 138: 43-52, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-31125659

RESUMEN

The classification of the Thaumatopsyllidae within the Copepoda has been an issue of ongoing discussion since the discovery of Thaumatopsyllus paradoxus G.O. Sars, 1913 from the Norwegian coast. The family has been formally placed in the Monstrilloida, the Cyclopoida and even in its own order, the Thaumatopsylloida, based on different morphological criteria. We examined for the first time, the phylogenetic position of the Thaumatopsyllidae using gene sequences of 28S and 18S rRNA, as well as COI mtDNA, obtained from two thaumatopsyllid species occurring off the coast of southern California. We also fortuitously explored the phylogenetic relationships of the Cyclopoida in more detail than Khodami et al. (2017) by including a wider sample of key families such as the Erebonasteridae and Gisellinidae. Both Maximum Likelihood and Bayesian analyses revealed the Thaumatopsyllidae is nested in the Cyclopoida and is related to the marine Speleoithonidae. In addition, 16 families of the Cyclopoida are supported to be monophyletic, but surprisingly, the Cyclopidae is paraphyletic. The Cyclopicinidae is the first monophyletic offshoot of the cyclopoid tree, followed by two derived clades. The first clade contains a monophylum consisting of the Schminkepinellidae + Giselinidae which is sister to a clade including the monophyletic Erebonasteridae and all other poecilostome families. The second clade is divided into two main, well-supported family clusters. One includes the Cyclopidae encompassing two subfamilies (Eucylopinae and Cyclopinae), but unexpectedly the parasitic Lernaeidae cluster as a sister-group to the brackish water Halicyclops (subfamily Halicyclopinae) and the Euryteinae is the sister to all the rest of Cyclopidae s. l., making the Cyclopidae paraphyletic. To resolve this conundrum, we erected two families, Euryteidae and Halicyclopidae. The Cyclopidae s. str. retains the subfamilies Eucyclopinae and Cyclopinae, although our phylogeny does not support the reciprocal monophyly of these subfamilies. Our results support the gradual invasion of fresh water by the four families in this cluster. The highly supported monophyletic marine Euryteidae is the first offshoot followed by the brackish-water, free-living Halicyclopidae and the freshwater, parasitic Lernaeidae. The Cyclopidae fulfilled the colonization of freshwater bodies. The other clade of families comprises 12 monophyletic families recovered by our analysis, including the Pterinopsyllidae (at first offshoot), the Smirnovipinidae sister to the Hemicyclopinidae + Psammocyclopinidae, the Thaumatopsyllidae + Speleoithonidae, an undescribed family sister to the Archinotodelphyidae + Notodelphyidae and the Cyclopinidae sister to the Oithonidae + Cyclopettidae. We propose suborder ranks for each of the four main phylogenetic subdivisions of the Cyclopoida. These are named Cyclopicinida, Ergasilida, Cyclopida and Oithonida after the type genus of the oldest described family in the respective group.


Asunto(s)
Copépodos/clasificación , Copépodos/genética , Animales , Teorema de Bayes , Copépodos/crecimiento & desarrollo , ADN Mitocondrial/genética , Agua Dulce , Estadios del Ciclo de Vida , Filogenia , ARN Ribosómico 18S/genética
8.
J Parasitol ; 105(2): 203-221, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30870069

RESUMEN

Using light and scanning electron microscopy of male and female copepods, we herein describe a new species of Neoalbionella Özdikmen, 2008 (Copepoda: Lernaeopodidae), Neoalbionella benzipirata n. sp., infecting the skin of the gulper shark, Centrophorus granulosus (Bloch and Schneider, 1801), in the northern Gulf of Mexico. Females of the new species were assigned to Neoalbionella by having 3 setae on the maxillule lateral palp (vs. 2 setae in Lernaeopoda Nordmann, 1832) and a single accessory denticle on the maxilliped subchela claw (vs. ≥2 denticles in Lernaeopoda). Females of the new species resemble those of Neoalbionella longicaudata ( Hansen, 1923 ) Özdikmen, 2008 but can be differentiated from them and those of all congeners by having a unique configuration of 16 dorsocephalic sensilla; an antennule terminal segment having 6 apical setae comprising tubercles 1 and 3, digitiform seta 4, 2 subequal setae of complex 5, and flagelliform seta 6; an antenna exopod with a thickened dorsal ridge, smooth (convex) outer surface with 2 short papillae, and rugose (concave) inner surface plus a terminal endopodal segment having a large dorsal hook, medial spine, bifid distal tubercle, and spinulose ventral process; a mandible having the formula P1, S1, P1, S1, P1, S1, B5; and a single pair of anterolateral spines on the mouth cone labium. Males attached to the posteroventral surface of the females' genital trunk were assigned to Neoalbionella by having tapered (not inflated) caudal rami directed posteroventrally. They were differentiated from previously reported congeneric males by having an antennule with the same number and configuration of apical setae as the female; an antenna with a spatulate exopod having minute spinules along its apex plus a terminal endopodal segment with components the same as the female; a mandible with formula P2, S1, P1, S1, B5; a labium with 1 pair of anterolateral spines like the female; and a conspicuous mediative process with bifid tip. Detail of the dorsocephalic shield (in females) and mouth cone labium (in both sexes) previously had not been used to diagnose Neoalbionella spp. We also dissected voucher specimens of " Neoalbionella longicaudata" (collected from gulper sharks in the western Pacific Ocean off Japan by Shiino in 1956), which we morphologically diagnosed as an innominate species, Neoalbionella sp. This is the first report of a species of Neoalbionella from the Gulf of Mexico and the second species of Neoalbionella reported from C. granulosus, a deepwater shark seldom encountered and surveyed for parasitology.


Asunto(s)
Copépodos/clasificación , Infestaciones Ectoparasitarias/veterinaria , Enfermedades de los Peces/parasitología , Tiburones/parasitología , Alabama , Animales , Copépodos/anatomía & histología , Infestaciones Ectoparasitarias/parasitología , Femenino , Florida , Golfo de México/epidemiología , Masculino
9.
G3 (Bethesda) ; 9(5): 1295-1302, 2019 05 07.
Artículo en Inglés | MEDLINE | ID: mdl-30923136

RESUMEN

Copepoda is one of the most ecologically important animal groups on Earth, yet very few genetic resources are available for this Subclass. Here, we present the first whole genome sequence (WGS, acc. UYDY01) and the first mRNA transcriptome assembly (TSA, Acc. GHAJ01) for the tropical cyclopoid copepod species Apocyclops royi Until now, only the 18S small subunit of ribosomal RNA gene and the COI gene has been available from A. royi, and WGS resources was only available from one other cyclopoid copepod species. Overall, the provided resources are the 8th copepod species to have WGS resources available and the 19th copepod species with TSA information available. We analyze the length and GC content of the provided WGS scaffolds as well as the coverage and gene content of both the WGS and the TSA assembly. Finally, we place the resources within the copepod order Cyclopoida as a member of the Apocyclops genus. We estimate the total genome size of A. royi to 450 Mb, with 181 Mb assembled nonrepetitive sequence, 76 Mb assembled repeats and 193 Mb unassembled sequence. The TSA assembly consists of 29,737 genes and an additional 45,756 isoforms. In the WGS and TSA assemblies, >80% and >95% of core genes can be found, though many in fragmented versions. The provided resources will allow researchers to conduct physiological experiments on A. royi, and also increase the possibilities for copepod gene set analysis, as it adds substantially to the copepod datasets available.


Asunto(s)
Copépodos/genética , Transcriptoma , Secuenciación Completa del Genoma , Animales , Biología Computacional/métodos , Copépodos/clasificación , Genoma , Genómica/métodos , Filogenia , ARN Mensajero
10.
Syst Parasitol ; 96(2): 207-232, 2019 03.
Artículo en Inglés | MEDLINE | ID: mdl-30747401

RESUMEN

The caligid copepod Caligus lichiae Brian, 1906 is redescribed based on new material collected from the type-host, Lichia amia (Linnaeus), and from a second carangid, Seriola dumerili (Risso), both caught in the Gulf of Iskenderun, Turkey. Key diagnostic characters of both sexes are reported, supported by drawings and scanning electron microscopy images. Despite the commercial importance of its type-host, L. amia, C. lichiae has not been reported since its original description. After detailed comparison with recent descriptions of Caligus aesopus Wilson C. B., 1921, commonly found on S. dumerili, we recognise these two species as conspecific and propose to relegate C. aesopus Wilson C. B., 1921 to a junior subjective synonym of C. lichiae Brian, 1906. Caligus lichiae is a member of the C. confusus group of species and an identification key to species in this group is provided.


Asunto(s)
Copépodos/clasificación , Copépodos/fisiología , Perciformes/parasitología , Animales , Copépodos/ultraestructura , Femenino , Masculino , Mar Mediterráneo , Microscopía Electrónica de Rastreo , Especificidad de la Especie
11.
Acta Parasitol ; 64(1): 187-194, 2019 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-30644062

RESUMEN

INTRODUCTION: Copepods are common components in all types of fish assemblages, being present in fishes of all ecosystems. The Ergasilidae Burmeister, 1835 is one of the biggest families in the order Cyclopoida Burmeister, 1834, with the majority of species found on freshwater fishes. MATERIAL AND METHODS: Ergasilus tipurus n. sp. is described from the nasal fossae of Calophysus macropterus and Sorubim lima captured in the rivers Guaporé and Mamoré in the State of Rondônia, Brazil, and from the nasal fossae and the gills of Rhaphiodon vulpinus collected from floodplain lakes of the Solimões River in the State of Amazonas, Brazil. RESULTS: The new species differs from all known species of Ergasilus from Brazilian waters by: (1) antennule setal formula 3:7:3:4:2:5; (2), having three-segmented first endopod of leg I; and (3) having leg V with a single well-developed segment with one middle distal setae, two distal setae placed laterally and two basal papillae, each provided with a simple seta. DISCUSSION: From all Ergasilus species described in the neotropics, this is the first species that can be found parasitizing the gills and nasal fossae of the reported hosts.


Asunto(s)
Bagres/parasitología , Copépodos/clasificación , Copépodos/crecimiento & desarrollo , Infestaciones Ectoparasitarias/veterinaria , Enfermedades de los Peces/parasitología , Animales , Brasil , Copépodos/anatomía & histología , Infestaciones Ectoparasitarias/parasitología , Branquias/parasitología , Microscopía , Nariz/parasitología , Ríos
12.
Mol Phylogenet Evol ; 130: 330-345, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-30366087

RESUMEN

Among the most derived calanoid copepod superfamily Clausocalanoidea about half of the genera belong to the so-called "Bradfordian" families that are defined by the presence of sensory setae at the maxilla and maxilliped. Many of these "Bradfordian" taxa are insufficiently well described, because their taxonomy is complicated and phylogenetic relationships are not completely resolved. We therefore aimed to unravel their phylogenetic relationships using molecular multi-gene analyses. We conducted molecular multi-gene analysis on 26 species from 15 genera representing all seven "Bradfordian" families using five gene fragments, the nuclear ribosomal 18S, 28S and internal transcribed spacer 2 DNA, and mitochondrial cytochrome c oxidase subunit I and cytochrome b. The monophyly of "Bradfordians" as one lineage in the superfamily Clausocalanoidea was supported by Maximum Likelihood and Bayesian Inference multi-gene analyses. Except for the support of species belonging to the same genus and specimens belonging to the same species, no phylogenetic relationships among genera and families were supported. The impossibility of resolving phylogenetic relationships among "Bradfordian" genera and families may be due to the young age or fast radiation of "Bradfordians" within the mostly derived calanoid superfamily Clausocalanoidea. Therefore, mutation rates might be not sufficient to track phylogenetic relationships. Evidence on phylogenetic relationships between genera and families remain unresolved after implementing integrated morphological and molecular taxonomic approaches.


Asunto(s)
Copépodos/clasificación , Filogenia , Animales , Teorema de Bayes , Copépodos/genética , Citocromos b/genética , Marcadores Genéticos
13.
Mol Phylogenet Evol ; 130: 366-379, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-30308279

RESUMEN

Nannopus (Harpacticoida, Nannopodidae) species are abundant and widely distributed throughout the world across a variety of habitats. Nannopus is well known for high frequencies of misidentifications and thus may comprise several cryptic complexes and morphologically distinct species. Cryptic taxa are common in meiofauna communities. In this study, we aimed to identify Nannopus species using an integrative approach including molecular taxonomy. We adopted a non-destructive DNA extraction method so that morphological and molecular data could be obtained from the same specimen. We analyzed the molecular diversity and distributions of Nannopus using a total of 190 individuals. We sequenced the 190 mtCOI, 53 mtCYTB, 25 18SrDNA, and 43 28SrDNA genes from 190 individuals. Several species delimitation approaches were applied, including uncorrected p-distances for mtCOI, mtCYTB, 18SrDNA, and 28SrDNA, and Automatic Barcode Gap Discovery and Bayesian implemented Poisson tree processes for mtCOI and mtCYTB data. The maximum likelihood and Bayesian approaches were used to examine the phylogenetic relationships among individuals using the combined set of all four genes. Our species delimitation and phylogenetic analyses indicated the presence of three cryptic and six morphologically distinct species. All species are sympatric and widely distributed across mudflats ranging from the Yellow Sea to the South Sea in Korea. The divergence patterns of the four genes were not congruent. A phylogenetic tree based on the concatenated dataset was the most robust, was congruent with morphology, and suggested two major clades. We considered the validity of reinstating the genus Ilyophilus (Lilljeborg, 1902) and ultimately concluded that including all congeners in Nannopus until the type species (N. palustris Brady, 1880) is re-described was the most prudent approach.


Asunto(s)
Biodiversidad , Copépodos/clasificación , Agua de Mar , Animales , Secuencia de Bases , Teorema de Bayes , Código de Barras del ADN Taxonómico , Bases de Datos Genéticas , Geografía , Filogenia , República de Corea , Análisis de Secuencia de ADN , Especificidad de la Especie
14.
Photochem Photobiol ; 95(3): 705-721, 2019 05.
Artículo en Inglés | MEDLINE | ID: mdl-30585639

RESUMEN

Copepod luciferases-a family of small secretory proteins of 18.4-24.3 kDa, including a signal peptide-are responsible for bright secreted bioluminescence of some marine copepods. The copepod luciferases use coelenterazine as a substrate to produce blue light in a simple oxidation reaction without any additional cofactors. They do not share sequence or structural similarity with other identified bioluminescent proteins including coelenterazine-dependent Renilla and Oplophorus luciferases. The small size, strong luminescence activity and high stability, including thermostability, make secreted copepod luciferases very attractive candidates as reporter proteins which are particularly useful for nondisruptive reporter assays and for high-throughput format. The most known and extensively investigated representatives of this family are the first cloned GpLuc and MLuc luciferases from copepods Gaussia princeps and Metridia longa, respectively. Immediately after cloning, these homologous luciferases were successfully applied as bioluminescent reporters in vivo and in vitro, and since then, the scope of their applications continues to grow. This review is an attempt to systemize and critically evaluate the data scattered through numerous articles regarding the main structural features of copepod luciferases, their luminescent and physicochemical properties. We also review the main trends of their application as bioluminescent reporters in cell and molecular biology.


Asunto(s)
Copépodos/metabolismo , Luciferasas/metabolismo , Isoformas de Proteínas/metabolismo , Secuencia de Aminoácidos , Animales , Copépodos/clasificación , Luciferasas/química , Luciferasas/genética , Mediciones Luminiscentes , Mutagénesis , Conformación Proteica , Pliegue de Proteína , Isoformas de Proteínas/química , Isoformas de Proteínas/genética , Agua de Mar , Especificidad de la Especie
15.
Parasitol Res ; 117(12): 3843-3850, 2018 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-30269176

RESUMEN

A new species of caligid copepod, Caligus mulli n. sp., is described based on specimens collected from surmullet Mullus surmuletus Linnaeus from Atlantic waters off the Azores, Portugal, and from red mullet Mullus barbatus barbatus (Linnaeus) caught in the Mediterranean Sea, off the south-eastern coast of Turkey. Sixteen specimens (both sexes) were collected from the gill cavity of M. surmuletus, and one female was collected from the gill cavity of M. barbatus barbatus. The new species is described from both fish hosts. Detailed comparisons are presented with two closely related species, C. ocyurus Cressey, 1991 and C. biaculeatus Brian, 1914: the former can be distinguished by differences in shape of the dorsal cephalothoracic shield and postantennal process, while the latter differs in relative size of the distal spines on leg 4 and in the shape of the sternal furca. The new species can easily be distinguished from its congeners by a combination of the following additional characteristics: (1) the corpus of the female maxilliped bears a prominent projection proximally and the myxal area is ornamented with a hyaline flange and two sensillae, and (2) the male maxilliped has a conical proximal projection on the corpus and a bifid myxal process opposing the claw.


Asunto(s)
Copépodos/anatomía & histología , Copépodos/clasificación , Enfermedades de los Peces/parasitología , Branquias/parasitología , Perciformes/parasitología , Animales , Femenino , Peces/parasitología , Masculino , Mar Mediterráneo , Portugal , Turquia
16.
Syst Parasitol ; 95(8-9): 905-912, 2018 11.
Artículo en Inglés | MEDLINE | ID: mdl-30276653

RESUMEN

A new species of parasitic copepod, Octopicola huanghaiensis n. sp., collected from the octopuses Amphioctopus fangsiao (d'Orbigny) and Octopus minor (Sasaki) (Octopoda: Octopodidae) in the Yellow Sea (off Qingdao, Shandong Province, China), is described. The new species is most similar to O. superba Humes, 1957, but can be distinguished from the latter by: (i) the third antennal segment having a different ornamentation; (ii) the fourth antennal segment of females much shorter than that in O. superba (49 vs 94 µm); (iii) males much smaller than females (mean body length 1.3 vs 2.0 mm, respectively) (vs similar male and female body size in O. superba, 1.9 mm and 1.8 mm respectively); and (iv) the presence of a spike at the posterior tip of each labrum flap. Octopicola huanghaiensis n. sp. is the first species of Octopicola Humes, 1957 reported from A. fangsiao and O. minor and is the only species of the family Octopicolidae Humes & Boxshall, 1996 known in North Pacific waters.


Asunto(s)
Copépodos/clasificación , Octopodiformes/parasitología , Animales , China , Copépodos/anatomía & histología , Femenino , Masculino , Océanos y Mares , Especificidad de la Especie
17.
Acta Parasitol ; 63(4): 692-703, 2018 Dec 19.
Artículo en Inglés | MEDLINE | ID: mdl-30367772

RESUMEN

Two species of cyclopoid copepods are recorded in this study. (1) A new species of bomolochid, Orbitacolax brevispinus n. sp. (Crustacea) is described based on adult females collected from the gill filaments and inner surface of the opercula of red barracuda, Sphyraena pinguis Günther (Perciformes: Sphyraenidae), captured in Korean waters. The new species differs from its congeners by the possession of two pairs of spines on the dorsal surface of the cephalothorax located just posterior to the rostrum and a different setal formula on the distal exopodal segments of legs 2-4. (2) A taeniacanthid Cirracanthus inimici (Yamaguti et Yamasu, 1959) (Crustacea) is redescribed based on the specimens collected from the gill filaments and inner surface of the opercula of devil stinger, Inimicus japonicus (Cuvier) (Scorpaeniformes: Synancellidae). This finding is the first record in Korean waters and the first description of male. A checklist of parasitic copepods of the families Bomolochidae Sumpf, 1871 and Taeniacanthidae Wilson, 1911of Korea is also provided.


Asunto(s)
Copépodos/clasificación , Infestaciones Ectoparasitarias/veterinaria , Enfermedades de los Peces/parasitología , Perciformes/parasitología , Animales , Copépodos/anatomía & histología , Copépodos/fisiología , Infestaciones Ectoparasitarias/parasitología , Femenino , Peces , Corea (Geográfico) , Masculino
18.
Environ Monit Assess ; 190(10): 603, 2018 Sep 21.
Artículo en Inglés | MEDLINE | ID: mdl-30242488

RESUMEN

The present study was conducted during July 2013 (early phase of monsoon or EM) and September 2013 (later phase of monsoon or LM) to ascertain the intra-monsoonal variation on zooplankton, by selecting 15 study stations in the river Saptamukhi, one of the main estuaries in the Sundarbans Estuarine System (SES). In 2013, SES experienced an unusually high monsoonal rainfall also exacerbated by cloud burst event at Himalayan region (upper stretches of SES) which tremendously increased the river runoff. The present work was aimed to decipher the effect of this unusual precipitation during the monsoon season on zooplankton assemblages along with different hydrological parameters. The abundance of zooplankton was recorded as lower during EM compared to LM. Altogether, 56 zooplankton taxa were identified with copepods forming the predominant population. Thirty-three copepod species were reported with 25 calanoid species forming the bulk of the biomass followed by 5 and 3 species of cyclopoids and harpacticoid, respectively. A combination of multivariate cluster analysis, biotic indices, and canonical correspondence analysis revealed noticeable alterations in the zooplankton community structure across the spatio-temporal scale. Furthermore, significant intra-monsoonal changes in zooplankton population correlated with several hydrological parameters were clearly noticed. Paracalanus parvus, Bestiolina similis and Oithona similis were observed to be the most dominant copepod species in both sampling periods. The result of the present study provides new insight on estuarine zooplankton community after unusual rainfall during monsoon season, and provides further evidence to support the conservation and management of the SES ecosystem.


Asunto(s)
Copépodos/clasificación , Monitoreo del Ambiente/métodos , Estuarios , Zooplancton , Animales , Biomasa , Ecosistema , India , Lluvia , Estaciones del Año , Zooplancton/clasificación , Zooplancton/crecimiento & desarrollo , Zooplancton/aislamiento & purificación
19.
Parasitol Res ; 117(11): 3497-3505, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-30187169

RESUMEN

Hamaticolax juanji n. sp. is described from specimens collected from the blackbelly rosefish Helicolenus dactylopterus Delaroche 1809 (Scorpaeniformes: Sebastidae). It is the second Hamaticolax species described and reported from the Mediterranean Sea, after Ha. resupinus Pérez-i-García, Carrassón and Boxshall, 2017. It is distinguished from Ha. resupinus by the presence of only one dorsal naked seta on the third segment of the antennule (vs. four), two unequal short naked setae in distal part of the antenna (vs. four), and the absence of a minute spine on the third endopodal segment of leg 1, among others. It is differentiated from Ha. prolixus Cressey 1969 by a comparatively reduced fourth pedigerous somite, the presence of two naked setae on the third segment of the antennule (vs. three), two naked setae and three curved claws in the distal part of the apical segment of the antenna (vs. three and four), an outer naked seta on the basis of leg 2, and by larger length/width ratio of the third endopodal segment, among others. Hamaticolax juanji n. sp. also has relatively longer inner setae on the first and second endopodal segments of leg 4 than the two former species. Patterns of host-use and host-specificity of the genus Hamaticolax are also discussed. The frequently observed low host-specificity of its members may be better explained by host ecological similarity and host availability phenomena, rather than by host phylogenetic distance.


Asunto(s)
Copépodos/anatomía & histología , Copépodos/clasificación , Perciformes/parasitología , Animales , Ecología , Femenino , Especificidad del Huésped , Mar Mediterráneo , Filogenia
20.
Zoolog Sci ; 35(4): 382-387, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-30079835

RESUMEN

Splanchnotrophidae Norman and Scott, 1906 is a family of parasitic copepods that infest nudibranchian and sacoglossan sea slugs. In this study, a new species of splanchnotrophid copepod, Lomanoticola nishiharai n. sp., is described based on specimens of both sexes collected from the facelinid nudibranch, Sakuraeolis enosimensis (Baba, 1930), in the Seto Inland Sea off Hiroshima, central Japan. It represents the third species of Lomanoticola Scott and Scott, 1895 and is characterized by the following female characters: the cephalosome distinctly protruded; the second and third lateral processes on the body originated from same bases; the caudal rami bears a seta V which almost same as long as the rami. Ultrastructural observations revealed that the cuticular surface of the lateral process on the female body is covered with numerous protuberances that may have protective functions against the cellular immune system of the host.


Asunto(s)
Copépodos/anatomía & histología , Copépodos/clasificación , Gastrópodos/parasitología , Animales , Femenino , Interacciones Huésped-Parásitos , Japón , Masculino , Especificidad de la Especie
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