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822. A new fish haemogregarine from South Africa and its suspected dual transmission with trypanosomes by a marine leech
- Creator:
- Hayes, Polly M., Smit, Nico J., Seddon, Alan M., Wertheim, David F., and Davies, Angela J.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Haemogregarina curvata, trypanosomes, leeches, development, intertidal fishes, and South Africa
- Language:
- English
- Description:
- Twenty two percent (22/98) of intertidal fishes of 10 species captured in South Africa at Koppie Alleen, De Hoop Nature Reserve (south coast) and Mouille Point, Cape Town (west coast), harboured single or combined infections of haemogregarines, trypanosomes and an intraerythrocytic parasite resembling a Haemohormidium sp. The haemogregarines included the known species Haemogregarina (sensu lato) bigemina (Laveran et Mesnil, 1901) Siddall, 1995 and Haemogregarina (sensu lato) koppiensis Smit et Davies, 2001, while Haemogregarina (sensu lato) curvata sp. n. was observed in Clinus cottoides Valenciennes and Parablennius cornutus (L.) at Koppie Alleen. This last haemogregarine is characterised particularly by its distinctly curved gamonts. Also at Koppie Alleen, squash and histological preparations of 9/10 leeches, Zeylanicobdella arugamensis De Silva, 1963, taken from infected C. cottoides and P. cornutus contained developmental stages of H. curvata and/or trypanosomes, but these were absent from haematophagous gnathiid isopods (Gnathia africana Barnard, 1914) taken from infected fishes. It is suspected that Z. arugamensis transmits the haemogregarine and trypanosomes simultaneously between fishes, a double event unreported previously from the marine environment.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
823. A new form of fuzzy α-compactness
- Creator:
- Shi, Fu Gui
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- L-topology, compactness, α-compactness, countable α-compactness, αLindelöf property, α-irresolute map, and α-continuous map
- Language:
- English
- Description:
- A new form of α-compactness is introduced in L-topological spaces by α-open L-sets and their inequality where L is a complete de Morgan algebra. It doesn’t rely on the structure of the basis lattice L. It can also be characterized by means of α-closed L-sets and their inequality. When L is a completely distributive de Morgan algebra, its many characterizations are presented and the relations between it and the other types of compactness are discussed. Countable α-compactness and the α-Lindelöf property are also researched.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
824. A new form of raabeia-type actinosporean (Myxozoa) from the oligochaete Uncinais uncinata
- Creator:
- Koprivnikar, Janet and Desser, Sherwin S.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Myxozoa, Actinosporea, raabeia, Oligochaeta, and Uncinais uncinata
- Language:
- English
- Description:
- In a study of the oligochaete fauna and their actinosporean parasites in three lakes in Algonquin Park, Canada, a novel form of raabeia-type actinosporean was observed in a single specimen of Uncinais uncinata (∅ersted) (Naididae). This form differs from those previously described in its small size, and by having caudal processes that gradually widen and terminate with a single prominent branch.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
825. A new generation of multichannel seismic apparatus and its practical application in standalone and array monitoring
- Creator:
- Brož, milan and Štrunc, Jaroslav
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, seizmicita, seismicity, building, analog-to-digital converter, seismic array, weak event, monitoring network, 7, and 551
- Language:
- English
- Description:
- A quantitatively new analog-to-digital converter (ADC) module has been developed during 2010, in co-operation with Tedia Ltd. The module has a 28-bit final resolution and uses 32-bit arithmetic. There are two versions, with four and twelve analog inputs. The 4-input module replaces the original 21-bit version, produced until 2009. The 12-input module is intended to be deployed in small-aperture seismic arrays. The whole set consists of four 3-channel detached modules that can be interconnected with the main module using a cable of up to 100 m in length. This design increases signal-to-noise ratio (SNR) by placing the A/D part as close to the seismograph as possible in order to transmit digital data for storage. All channels are sampled coherently so that all four sensors are automatically synchronised. It allows the detection of local events even though the sync-signal is absent. In other words, the 12-input module is suitable for ad-hoc field measurements even in places where there is no GPS signal. All arrays operated by the Institute of Rock Structure and Mechanics (IRSM) are going to be upgraded to use these modules and some new sites will also be set-up with this innovative equipment (e.g. Lazy in Western Bohemia and Dobrá Voda in Slovakia)., Milan Brož and Jaroslav Štrunc., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
826. A new genus and four new species of dactylogyrids (Monogenea), gill parasites of pimelodid catfishes (Siluriformes: Pimelodidae) in South America and the reassignment of Urocleidoides megorchis Mizelle et Kritsky, 1969
- Creator:
- Acosta, Aline A, Mendoza-Palmero, Carlos A, Silva, Reinaldo J. da, and Tomáš Scholz
- Format:
- print, počítač, and online zdroj
- Type:
- model:article and TEXT
- Subject:
- morfologie (biologie), Monogenea, morphology (biology), Jižní Amerika, South America, Ancyrocephalinae, integrative taxonomy, 28S rRNA, Sorubiminae, Neotropical region, 2, and 59
- Language:
- English
- Description:
- Nanayella gen. n. is proposed to accommodate four new species of dactylogyrid monogeneans found on the gills of two species of pimelodid catfishes (Siluriformes) from the Amazon River basin in Peru and the Upper Paraná River basin in Brazil. Nanayella gen. n. is mainly characterised by the presence of modified hook pairs 5 and 6, which have a slender shank with slightly enlarged base, inconspicuous thumb, and straight point. Nanayella aculeatrium gen. n. et sp. n. (type species) from Sorubim lima (Bloch et Schneider) (type host) differs from its congeners mainly by possessing seven sclerotised spines on one side of circular ornamentation of the vaginal atrium. Nanayella fluctuatrium gen. n. et sp. n. is characterised by the presence of sclerotised undulations surrounding the circular ornamentation of the vaginal atrium. Nanayella amplofalcis gen. n. et sp. n. is typified by possessing hook pairs 1 and 2 with a robust, wide shank and a round, weakly sclerotised subunit at the base. Nanayella processusclavis gen. n. et sp. n. differs from congeners by the presence of a conspicuous posterior medial process on the dorsal bar. Urocleidoides megorchis Mizelle et Kritsky, 1969 described from the gills of S. lima in Brazil is transferred to Nanayella gen. n. as Nanayella megorchis comb. n. based on morphological and molecular evidence. Analyses of partial sequences of the 28S rRNA gene revealed all five species of the new genus to form a monophyletic clade within a bigger clade comprised of dactylogyrids of South American pimelodids., Aline A. Acosta, Carlos A. Mendoza-Palmero, Reinaldo J. da Silva, Tomáš Scholz., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
827. A new genus and new species of Phoridae (Diptera) from Poland
- Creator:
- Disney, R. Henry L. and Durska, Ewa
- Type:
- article, model:article, and TEXT
- Subject:
- Phoridae, Poloniphora, new genus, Megaselia, Phora, new species, and Poland
- Language:
- English
- Description:
- One new genus and seven new species of Phoridae (Diptera) are described from Bialowieska Forest in Poland, namely Poloniphora Disney & Durska gen, n. with the species P. bialoviensis Disney sp. n., Megaselia henrydisneyi Durska sp. n., M. joannae Disney sp. n., M. marekdurskii Disney sp. n., M. teresamajewskae Disney sp. n.: M. trojani Disney sp. n., Phora michali Disney sp. n., The new genus shows affinity with Australasian genera, Beckerina Malloch and Eocene fossils erroneously assigned to Megaselia in the past.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
828. A new genus and new species of Staphylinidae (Coleoptera) from Baltic amber
- Creator:
- Paśnik, Grzegorz and Kubisz, Daniel
- Type:
- article, model:article, and TEXT
- Subject:
- Coleoptera, Staphylinidae, Lathrobium, Sepedophilus, Palaeosepedophilus, Dictyon, Phymatura, Aleochara, new genus, new species, and Baltic amber
- Language:
- English
- Description:
- One new genus and nine new species of Staphylinidae are described from Baltic amber, namely Palaeosepedophilus gen.n. and the species P. succinicus sp.n., Lathrobium balticum sp.n., Lathrobium succini sp.n., Lathrobium ambricum sp.n., Lathrobium jantaricum sp.n., Sepedophilus balticus sp.n., Dictyon antiquus sp.n., Phymatura electrica sp.n., Aleochara baltica sp.n. Their affinity with related species is discussed.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
829. A new genus and species of fish blood fluke, Achorovermis testisinuosus gen. et sp. n. (Digenea: Aporocotylidae), infecting critically endangered smalltooth sawfish, Pristis pectinata (Rhinopristiformes: Pristidae) in the Gulf of Mexico
- Creator:
- Warren, Micah B, Bakenhaster, Micah D, Scharer, Rachel M, Poulakis, Gregg R, and Bullard, Stephen A
- Format:
- print, počítač, and online zdroj
- Type:
- model:article and TEXT
- Subject:
- paryby, příčnoústí, Chondrichthyes, Elasmobranchii, Severní Amerika, North America, Mexiko, Mexico, taxonomy, systematics, Endangered Species Act, 2, and 59
- Language:
- English
- Description:
- Achorovermis testisinuosus gen. et sp. n. (Digenea: Aporocotylidae) infects the heart of the smalltooth sawfish, Pristis pectinata Latham (Rhinopristiformes: Pristidae), in the eastern Gulf of Mexico. Specimens of the new genus, along with the other blood flukes that infect batoids are similar by having an inverse U-shaped intestine and a curving testis as well as by lacking tegumental spines. The new genus differs from all of the other blood flukes infecting batoids by having an elongate body (>50 × longer than wide), a testis having >100 curves, and an ovary wholly anterior to the uterus. It differs from Ogawaia glaucostegi Cutmore, Cribb et Yong, 2018, the only other blood fluke infecting a rhinopristiform, by having a body that is >50 × (vs <30 ×) longer than wide, a testis that is >75 × (vs <40 ×) longer than wide and has >100 (vs <70) curves, an ovary wholly anterior to (vs lateral and dorsal to) the seminal vesicle, a uterus wholly posterior to (vs overlapping and lateral to both) the testis and ovary, and a sinuous (vs convoluted) uterus. The new species joins a small group of chondrichthyan blood flukes that lack tegumental spines: O. glaucostegi, Orchispirium heterovitellatum Madhavi et Rao, 1970, Myliobaticola richardheardi Bullard et Jensen, 2008, Electrovermis zappum Warren et Bullard, 2019. Blood flukes infecting batoids are further unique by having a curving testis. That is, the blood flukes infecting species within Selachii are morphologically distinct from those infecting species within the Batoidea (excluding Gymnurahemecus bulbosus Warren et Bullard, 2019). Based on the morphological similarity, we suspect that the new species shares a recent common ancestor with O. glaucostegi. The discovery of the new species brings the total number of chondrichthyan blood flukes to 11 species assigned to nine genera., Micah B. Warren, Micah D. Bakenhaster, Rachel M. Scharer, Gregg R. Poulakis and Stephen A. Bullard., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
830. A new genus and species of Heligmonellidae (Nematoda: Trichostrongylina) parasitic in Delomys dorsalis (Rodentia: Sigmodontinae) from Misiones, Argentina
- Creator:
- Digiani, María Celina and Kinsella, John M.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- taxonomy, Nippostrongylinae, synlophe, right lobe hypertrophy, right lobe rotation, caudal appendage, and South America
- Language:
- English
- Description:
- Alippistrongylus bicaudatus gen. et sp. n. (Nematoda: Heligmonellidae) is described from the striped Atlantic forest rat, Delomys dorsalis (Hensel) (Rodentia: Sigmodontinae), from the province of Misiones in Argentina. The new genus and species is characterised by a synlophe of 21 unequal ridges in both sexes without a gradient in size, with two ridges weakly sclerotised and oriented perpendicularly in the dorsal left quadrant; males with a highly dissymmetrical bursa with a hypertrophied right lobe, and females with a dorsal conical appendage just posterior to the vulva, conferring a two-tailed appearance to the female worms.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public