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1662. A new Middle Jurassic "grylloblattodean" family from China (Insecta: Juraperlidae fam. n.)
- Creator:
- Huang, Di-Ying and Nel, André
- Type:
- article, model:article, and TEXT
- Subject:
- "Grylloblattodea", Juraperlidae fam. n., Middle Jurassic, Daohugou, and China
- Language:
- English
- Description:
- The new family Juraperlidae is erected for the new genus and species Juraperla daohugouensis from the Chinese Middle Jurassic. Its wing venation has strong similarities with that of Mesozoic taxa currently included in the group "Grylloblattodea", but its character "three (or four?)-segmented tarsi" questions its potential inclusion into the same order with the modern Grylloblattodea. This suggests that the systematic assignments of several fossil "grylloblattid" species, mainly based on wing venation, could be very different.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1663. A new mite species Schizocoptes daberti sp. n. (Acariformes: Chirodiscidae) from Chrysochloris stuhlmanni Matsche (Afrosoricida: Chrysochloridae) in the Democratic Republic of the Congo
- Creator:
- Bochkov, Andre V
- Format:
- print, počítač, and online zdroj
- Type:
- model:article and TEXT
- Subject:
- parazitologie, parasitology, Afrika, Africa, acari, fur-mites, golden-moles, systematics, identification key, 2, and 59
- Language:
- English
- Description:
- A new mite species Schizocoptes daberti sp. n. (Acariformes: Chirodiscidae) from Chrysochloris stuhlmanni Matsche (Afrosoricida: Chrysochloridae) from the Democratic Republic of the Congo is described. It differs from the closely related species S. conjugatus Lawrence, 1944 in both sexes by distance si-si at least twice longer than si-se (vs these distances are subequal in S. conjugatus); in females by setae cp 30-40 µm long (vs about 65 µm long), and in males by the very weakly sclerotised posterior parts of the hysteronotal shield (vs strongly sclerotised), setae d1 situated anterior to the hysteronotal shield (vs at the hysteronotal shield), and by opened coxal fields III (vs closed). An amended generic diagnosis, including description of immature stages, and a key to named species of Schizocoptes Lawrence, 1944 are provided., Andre V. Bochkov., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1664. A new mitochondrial lineage in the edible dormouse, Glis glis (Rodentia: Gliridae), from Alonissos island (Sporades archipelago, Greece)
- Creator:
- Castiglia, Riccardo, Annesi, Flavia, Cattaneo, Cristina, Grano, Mauro, Milana, Giuliano, and Amori, Giovanni
- Type:
- article, model:article, and TEXT
- Subject:
- Mediterranean island, phylogeography, mtDNA, and cytochrome b
- Language:
- English
- Description:
- We performed a phylogeographic analysis of mitochondrial DNA in the edible dormouse, Glis glis (Linnaeus, 1766), including 15 known haplotypes obtained across large part the European species’ range along with a fragment of the cytochrome b gene of one specimen from Alonissos island (Sporades archipelago, Greece). The haplotype of this specimen did not cluster with any other haplotypes, which were grouped into four lineages. The genetic divergence (mean K2P distance) between the Greek specimen and these four lineages, comprised between 3.3 % and 5.9 %, was comparable to the genetic divergence found between the aforesaid lineages (1.9-6.4 %). Accordingly, the specimen most likely falls into a new, never described before, Mediterranean mitochondrial lineage of G. glis.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1665. A new monorchiid cercaria (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia: Veneridae) in the Southwest Atlantic Ocean, with notes on its gonadal effect
- Creator:
- Cremonte, Florencia, Kroeck, Marina Andrea, and Martorelli, Sergio Roberto
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Digenea, Monorchiidae, cercaria, metacercaria, Bivalvia, Veneridae, and Argentine Sea
- Language:
- English
- Description:
- An unnamed microcercous cercaria (Digenea: Monorchiidae), a parasite of Amiantis purpurata (Lamarck, 1818) (Bivalvia: Veneridae) and its corresponding metacercaria from the province of Buenos Aires and the Patagonian coast of the Southwest Atlantic Ocean, are described. The cercaria described in this paper differs from the three other monorchiid microcercous cercariae, i.e., Lasiotocus minutus (Manter, 1931), Lasiotocus elongatus (Manter, 1931), and Cercaria caribbea XXXVI Cable, 1956, mainly because of the extension of the excretory vesicle and the location of the ventral sucker. Cercariae artificially extracted from sporocysts encyst in a dish and form metacercariae enveloped by a gelatinous sac with two prolongations, which are used to adhere to the substratum. The monorchiid described in this paper has a life cycle similar to those of L. minutus and L. elongatus, although the adult stage of the present species is still unknown. Their larvae are similar in morphology and have venerid clams as their first hosts. The presence of a monorchiid larva is reported for the first time in the Southern Hemisphere. Its monthly prevalence rates, ranging from 0 to 25% (mean: 8.3%), are given from the Patagonian coast. The infection seems to cause castration as it was observed that during March through to May, when most gametes were produced in uninfected individuals, 81% of the infected individuals did not produce gametes.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1666. A New Multilayer Feedforward Network Based on Trimmed Mean Neuron Model
- Creator:
- Yolcu , Ufuk, Bas, Eren, Egrioglu, Erol , and Aladag, Cagdas Hakan
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- neural networks, neuron model, trimmed mean, particle swarm optimization, outliers, and forecast
- Language:
- English
- Description:
- The multilayer perceptron model has been suggested as an alternative to conventional approaches, and can accurately forecast time series. Additionally, several novel artificial neural network models have been proposed as alternatives to the multilayer perceptron model, which have used (for example) the generalized- mean, geometric mean, and multiplicative neuron models. Although all of these artificial neural network models can produce successful forecasts, their aggregation functions mean that they are negatively affected by outliers. In this study, we propose a new multilayer, feed forward neural network model, which is a robust model that uses the trimmed mean neuron model. Its aggregation function does not depend on outliers. We trained this multilayer, feed forward neural network using modied particle swarm optimization. We applied the proposed method to three well-known time series, and our results suggest that it produces superior forecasts when compared with similar methods.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1667. A new myxozoan parasite, Myxobolus allami sp. n. (Myxozoa: Myxobolidae) from the intestinal wall of Sparidentex hasta (Valenciennes) in Arabian Gulf
- Creator:
- Mansour, Lamjed, Abdel-Haleem, Heba M., Atwa, Marwa, Darwish, Ahmed B., Al-Quraishy, Saleh, and Abdel-Baki, Abdel-Azeem S.
- Format:
- počítač and online zdroj
- Type:
- model:article and TEXT
- Subject:
- Myxosporea, ultrastructure, phylogeny, SSU rDNA, and Saudi Arabia
- Language:
- English
- Description:
- Myxobolus allami sp. n. is described from the intestinal wall of the silvery black porgy, Sparidentex hasta (Valenciennes), off Saudi Arabian coast of Arabian Gulf. Two of 20 examined fish were found to be infected with irregular-shaped plasmodia 3-8 mm long × 2-3 mm wide. Mature myxospores are subspherical to elliptical in the valvular view and oval in the sutural view, and are 11-13 (12) µm long, 7-8 (7.5) µm wide and 10-12 (10.8) µm thick. Spores have relatively thin valves and mostly (~ 72%) end with short caudal appendages of ~3 µm long. The spores also have two polar capsules, which are oval to elliptical and measure 5-7 (5.7) µm in length and 2-3 (2.7) µm in width. Polar filaments are coiled, with three turns. Transmission electron microscopy revealed that caudal appendages originated from the sutural edge at the posterior pole of the myxospore with density similar to that of its valves. The SSU rRNAgene sequence of the present species does not match any available sequences in GenBank. Phylogenetically, this species is sister to Myxobolus khaliji Zhang, Al-Qurausihy et Abdel-Baki, 2014 within a well-supported clade of Myxobolus-Henneguya with species infecting marine fishes. The combination of molecular data and morphological differences between this and other species of Myxobolus Bütschli, 1882 lead us to propose that the present form be established as a new species, M. allami. The present study also provides more evidence for the idea that caudal appendages cannot be reliably used to distinguish the species of the genera Myxobolus and Henneguya Thélohan, 1892.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1668. A new nematode, Dichelyne alatae sp. n. (Cucullanidae), from Sillaginopsis panijus (Pisces) of West Bengal, India
- Creator:
- De, N. C. and Maity, R. N.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Dichelyne, Nematoda, Sillaginopsis panijus, and India
- Language:
- English
- Description:
- A new nematode, Dichelyne alatae sp. n., is described on the basis of the worms recovered from the intestine of the whiting, Sillaginopsis panijus (Perciformes: Sillaginidae) from the estuary of the river Hooghly at Kalyani, West Bengal, India. Dichelyne alatae differs from congeners in having a small body size, deirids posterior to the oesophagus, short and wide caudal alae at the level of cloacal opening, unequal, alate spicules, a shield-shaped gubemaculum, a different number of caudal papillae and a conical tail with spines in its distal region.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1669. A new neural design for faster pattern detection using cross correlation and matrix decomposition
- Creator:
- El-Bakry, Hazem M.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Fast pattern detection, neural networks, cross correlation, frequency domain, image decomposition, sub-image normalization, and parallel processing
- Language:
- English
- Description:
- Neural networks have shown good results for detecting a certain pattern in a given image. In this paper, faster neural networks for pattern detection are presented. Such processors are designed based on cross correlation in the frequency domain between the input matrix and the input weights of neural networks. This approach is developed to reduce the computation steps required by these faster neural networks for the searching process. The principle of divide and conquer strategy is applied through matrix decomposition. Each matrix is divided into submatrices small in size, and then each one is tested separately by using a single faster neural processor. Furthermore, faster pattern detection is obtained by using parallel processing techniques to test the resulting submatrices at the same time, employing the same number of faster neural networks. In contrast to faster neural networks, the speed-up ratio is increased with the size of the input matrix when using faster neural networks and matrix decomposition. Moreover, the problem of local submatrix normalization in the frequency domain is solved. The effect of matrix normalization on the speed-up ratio of pattern detection is discussed. Simulation results show that local submatrix normalization through weight normalization is faster than submatrix normalization in the spatial domain. The overall speed-up ratio of the detection process is increased as the normalization of weights is done offline.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1670. A new non-uremic rat model of long-term peritoneal dialysis
- Creator:
- Peng, Y.-M., Shu, Z.-J., Xiao, L., Sun, L., Tang, W.-B., Huang, Y., Liu, Y.-H., Li, J., Ling, G.-H., Xu, X.-Q., Halmurat, U., and Liu, F.-Y.
- Format:
- Type:
- article, články, model:article, and TEXT
- Subject:
- Fyziologie člověka a srovnávací fyziologie, peritoneální dialýza, dialyzační roztoky, glukóza, peritoneal dialysis, dialyzing solutions, glucose, rat model, 14, and 612
- Language:
- English
- Description:
- Together with the development of peritoneal dialysis (PD), appropriate animal models play an important role in the investigation of physiological, pathophysiological and clinical aspects of PD. However, there is still not an ideal experimental PD animal model. In this study, 45 Sprague-Dawley rats were divided into three groups. Grou p 1 (n=15) was receiving daily peritoneal injection through the catheter connected to the abdominal cavity, using PD solution containing 3.86 % D-glucose. Group 2 (n=15) was receiving daily peritoneal injection of 0.9 % physiological saline through a catheter. Group 3 (n=15), which was subjected to sham operation, served as controls. Our results showed that WBC counts in peritoneal effluent of Group 1 were slightly higher than those of Group 2 and control group, respectively (p<0.05). However, there was no episode of infection in any group. In addition, there was no significant difference in neutrophils fractions among these three groups. Hematoxylin-eosin and Masson’s trichrome staining demonstrated a dramatic increase in thickness of the mesothelium-to-muscle layer of peritoneum exposed to high glucose (Group 1) compared to Group 2 and controls (p<0.01). These data indicated that we established a novel rat model of PD with a modified catheter insertion method. This model is more practical, easy to operate, not too expensive and it will facilitate the investigate of long-term effects of PD., Y.-M. Peng ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public