Journal articles: 'Gudgeon'

1

Ohee, Henderite L., Gerardinalia Ngamelubun, Joane J. Ansaka, Novela H. Korwa, and Puguh Sujarta. "Ekologi dan Kelimpahan Ikan Sentani Gudgeon (Oxyeleotris heterodon, Weber 1908) dan Snakehead Gudgeon (Giuris margaritacea, Valenciennes 1837) di Danau Sentani, Papua." JURNAL BIOLOGI PAPUA 11, no. 1 (May 29, 2019): 24–32. http://dx.doi.org/10.31957/jbp.646.

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Freshwater community in Lake Sentani comprise of 35 species including three endemic species, seven native species, eight anadromous fish and 17 introduced species. Two native species are Sentani Gudgeon (Oxyeleotris heterodon) and Snakehead Gudgeon (Giuris margaritacea). The survey aims to document the ecology and fish abundance of the gudgeons in Lake Sentani. Fish sampling was done passively by using gill nets with three different mesh sizes in five locations; Puai, Enandowai, Waena, Ayapo and Yahim. Substrate type, water vegetations, habitat depth and fish abundance were recorded each locations. Substrate preferences of the gudgeons are sand, mud and gravel, while O. heterodon was more abundance in sand mud substrate type. Moreover, water vegetation preference was different between O. heterodon and G. margaritacea. Sentani Gudgeon prefer habitat with dense water vegetations, while G. margaritaceus could be found in habitat with or without water vegetation. Theses two gudgeons were found in relatively the same habitat depth, up to 7 meters depth. O. heterodon and G. margaritacea had a very low abundance in the lake. It is important to conserve lake area from the edge up to 7 meter depth that consist of sand, mud and gravel substrate types and dense water vegetation to ensure the population of these two gudgeons are abundance in Lake Sentani. Key words: Ecology, Lake Sentani, relative abundance, O. heterodon, G. margaritacea.

2

Boxall, George D., John J. Sandberg, and Frederieke J. Kroon. "Population structure, movement and habitat preferences of the purple-spotted gudgeon, Mogurnda adspersa." Marine and Freshwater Research 53, no. 5 (2002): 909. http://dx.doi.org/10.1071/mf01039.

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We examined the movement patterns and habitat preferences of Mogurnda adspersa in Pattersons Creek, a small, low-order, rainforest creek in Gillies Range State Forest, Far North Queensland, Australia. First, we conducted a capture and recapture study to document population structure and individual movements. Our results show that movement is a prominent feature of population behaviour of M. adspersa, with male gudgeons moving significantly more between pools than females, irrespective of gudgeon size. Second, we quantitatively described habitat characteristics of rainforest pools using point sampling. This data was then combined with capture data to describe the habitat preference of M. adspersa. Our results show that the number of gudgeons was positively related to pool size and decreased with increasing pool velocity. We discuss the results in light of effective management options for the species habitat in general, and Far North Queensland in particular.

3

Arsovska, Julijana, Milica Ristovska, Predrag Simonović, Vasil Kostov, and Valentina Slavevska-Stamenkovič. "First data on the structure of the vertebral column in Gobio and Romanogobio species (Actinopterygii, Cypriniformes, Gobionidae) from Ohrid Lake and the Vardar River basin." Acta Ichthyologica et Piscatoria 51, no. 1 (March 31, 2021): 37–45. http://dx.doi.org/10.3897/aiep.51.63489.

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The validity of four gudgeon species known for the ichthyofauna of North Macedonia has been a matter of different taxonomic disputes (except for Gobio ohridanus Karaman, 1924). Recently, a restoration of the species status was proposed for Gobio balcanicus Dimovski et Grupče, 1977 and Romanogobio banarescui (Dimovski et Grupče, 1974). So far, Romanogobio stankoi (Karaman, 1974), has not been a part of any recent investigation and it is still considered as a junior synonym of Romanogobio elimeius (Kattoulas, Stephanidis et Economidis, 1973) or R. banarescui due to the lack of distinctive morphological characters. The osteological characters in the structure of the vertebral column, have significance to the systematics of the gudgeons, especially in elevation of Romanogobio at the level of genus. To contribute to resolving the taxonomic status in these gudgeon species, the goal of this paper is to identify distinctive characters by presenting and analyzing the structure of their vertebral column. Samples were inspected from the fish collections in the Institute of Biology (G. ohridanus), the Institute of Animal Science (G. balcanicus), and the Macedonian Museum of Natural History (both Romanogobio species). Fish samples were X-rayed as well as cleared and double-stained. Obtained data on the number of vertebrae were presented through the vertebral formula following Naseka (1996). Multiple Correspondence Analysis (MCA) was used to check the interrelation between taxa and the number of vertebrae in all units of the vertebral column. G. balcanicus is distinguished from G. ohridanus mainly in the predorsal and preanal subregion (10 vs. 11 vertebrae and 1 vs. 0 vertebrae, respectively), while R. stankoi distinguishes from R. banarescui by the number of vertebrae in the preanal and postanal subregion (2 vs. 4 vertebrae and 19 vs. 17 vertebrae, respectively). The structure of vertebral column offers distinctive morphological characters for the four gudgeon species from Ohird Lake and the Vardar River basin.

4

Bertozzi, Terry, Mark Adams, and Keith F. Walker. "Species boundaries in carp gudgeons (Eleotrididae : Hypseleotris) from the River Murray, South Australia: evidence for multiple species and extensive hybridization." Marine and Freshwater Research 51, no. 8 (2000): 805. http://dx.doi.org/10.1071/mf00039.

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Allozyme analyses of carp gudgeons (Hypseleotris) from five sites in the lower River Murray revealed three distinctive taxa designated HA, HB and HC, diagnosable from one another by fixed differences at 3–5 loci, and three apparent F 1 hybrid forms, HA¥HB, HA¥HX and HB¥HX, where HX denotes a taxon not sampled in its ‘pure’ form. Of all fish sampled, 25% were hybrids, although only one hybrid form was found at any one site, and never in company with both parental taxa. No hybrids involving HC were found, although this was the most common taxon, and no HA¥HB hybrids were present at the one site of demonstrated sympatry between the parental taxa. Morphological analysis and the lack of introgression confirm that HA, HB, and HC are distinct biological species. Partial meristic data suggest that HC corresponds to H. klunzingeri s.l., ‘Midgley’s carp gudgeon’ is a composite of HA, HB and HA¥HB hybrids, and ‘Lake’s carp gudgeon’ may be a composite of HX and one of its hybrids (HB¥HX). We speculate that one or more of the hybrid classes may be ‘unisexual lineages’ (clonally reproducing, usually all-female forms derived from hybridization between congeners).

5

Schmidt, Daniel J., Joel A. Huey, Nick R. Bond, and Jane M. Hughes. "Population structure of sexually reproducing carp gudgeons: does a metapopulation offer refuge from sexual parasitism?" Marine and Freshwater Research 64, no. 3 (2013): 223. http://dx.doi.org/10.1071/mf12305.

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Australian carp gudgeons (Hypseleotris spp.) of the Murray–Darling basin are a species complex including sexually reproducing taxa and unisexual hybrid lineages that reproduce via hybridogenesis. Unisexual fish require gametes of a sexual species to propagate themselves and can be regarded as ‘sexual parasites’ capable of driving closed populations to extinction. Metapopulation dynamics have been proposed as a mechanism that could facilitate coexistence between a sexual parasite and its ‘host’. This study evaluates whether patterns of spatial genetic variation are compatible with metapopulation dynamics for a sexually reproducing member of the carp gudgeon complex (Hypseleotris sp. HA), in the Granite Creeks system of central Victoria. Genetic differentiation of fish among all study sites was accommodated by a model of migration-drift equilibrium using decomposed pairwise regression analysis. Given that the population was divided into discrete patches in the form of refugial waterholes during the time of this study, we infer that spatially constrained source–sink metapopulation dynamics may be responsible for producing this pattern. It is therefore possible that metapopulation dynamics contribute to coexistence in the Granite Creeks carp gudgeon hybridogenetic system, and further analysis is required to determine the relative importance of environmental versus demographic factors towards patch extinction.

6

Wiegleb, Joschka, Philipp E. Hirsch, Frank Seidel, Georg Rauter, and Patricia Burkhardt-Holm. "Flow, force, behaviour: assessment of a prototype hydraulic barrier for invasive fish." Hydrobiologia 849, no. 4 (December 3, 2021): 1001–19. http://dx.doi.org/10.1007/s10750-021-04762-z.

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AbstractMigration barriers being selective for invasive species could protect pristine upstream areas. We designed and tested a prototype protective barrier in a vertical slot fish pass. Based on the individuals’ swimming responses to the barrier flow field, we assumed this barrier would block the ascension of the invasive round goby, but allow comparable native species (gudgeon and bullhead) to ascend. The barrier was tested in three steps: flow description, quantification of forces experienced by preserved fish in the flow field, and tracking the swimming trajectories of ca. 43 live fish per trial and species. The flow and the forces were homogenous over the barrier, though gudgeon experienced significantly smaller forces than round goby or bullhead. The swimming trajectories were distinct enough to predict the fish species with a random forest machine learning approach (92.16% accuracy for gudgeon and 85.24% for round goby). The trajectories revealed round goby and gudgeon exhibited increased, but varied, swimming speeds and straighter paths at higher water discharge. These results suggest that passage of round goby was prevented at 130 L/s water discharge, whereas gudgeon and bullhead could pass the barrier. Our findings open a new avenue of research on hydraulic constructions for species conservation.

7

ABINAWANTO, ABINAWANTO, and EKA DEWI SRIYANI. "Characterization of Sentani gudgeon, Oxyeleotris heterodon (Weber, 1907) at Sentani Lake, Papua, Indonesia based on truss morphometric." Biodiversitas Journal of Biological Diversity 19, no. 3 (May 1, 2018): 1013–20. http://dx.doi.org/10.13057/biodiv/d190333.

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Abinawanto, Sriyani ED, Bowolaksono A. 2018. Characterization of Sentani gudgeon, Oxyeleotris heterodon (Weber, 1907) at Sentani Lake, Papua, Indonesia based on truss morphometric. Biodiversitas 19: 1013-1020. The study concerning the morphometry of Sentani gudgeon (Oxyeleotris heterodon, Weber 1907) was done from August 2016 until April 2017 in Sentani Lake, Jayapura District, Papua Province, Indonesia. The objectives of the study were to find out the diversity of the fish using truss morphometry approach. A total 56 individual sampled from three sampling sites were characterized for their 26 truss morphometric characters. The result showed that there were differences on morphometric characters of Sentani gudgeon. The highest correlation value found in character B2 and D5, which represented the dorsal portion and the tail fin of the fish body respectively. All variables showed significant different between each location (the p-value <c0.05). The canonical diagram resulted of 26 truss morphometric characters illustrated three separated clusters which discriminated the three populations based on sampling sites. A genetic distance analysis among Sentani gudgeon indicated that the fish originated from Putali Village was morphologically closed to the fish population from Sosiri. The truss morphometry technique can be used to identify the diversity of Sentani gudgeon in Sentani Lake

8

Taylor, M. J., and D. Hoole. "Ligula intestinalis (L.) (Cestoda: Pseudophyllidea): polarization of cyprinid leucocytes as an indicator of host-and parasite-derived chemoattractants." Parasitology 107, no. 4 (November 1993): 433–40. http://dx.doi.org/10.1017/s0031182000067792.

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SUMMARYFreshly isolated pronephric leucocytes from roach, Rutilus rutilus and gudgeon, Gobio gobio were exposed to extracts of plerocercoids of Ligula intestinalis from these two cyprinid fish. Addition of the extracts or an increase in incubation temperature from 10 to 20 °C induced polarization of neutrophils and L1 granulocytes. Cells were transformed from their typical spherical shape to elongate forms possessing a ruffled leading edge. Extracts obtained from gudgeon-Ligula stimulated polarization of both roach and gudgeon leucocytes at 10 and 20 °C. In contrast, extracts from roach-Ligula, whilst having little effect at 10 °C, suppressed temperature-induced polarization of leucocytes at 20 °C. Addition of serum to all the essays enhanced polarization and abolished the roach-Ligula-induced suppression. It is suggested that leucocyte chemoattractants are present in Ligula from roach and gudgeon and only parasites from the former host contain an inhibitor of polarization. In addition, host-derived factors possibly complement, may be involved in leucocyte chemoattraction.

9

Pospichal, A., D. Pokorova, T. Vesely, and V. Piackova. "Susceptibility of the topmouth gudgeon (Pseudorasbora parva) to CyHV-3 under no-stress and stress conditions." Veterinární Medicína 63, No. 5 (May 29, 2018): 229–39. http://dx.doi.org/10.17221/88/2017-vetmed.

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Cyprinid herpesvirus 3 (CyHV-3), also known as koi herpesvirus, is the causative agent of the highly contagious koi herpesvirus disease, which is restricted to koi and common carp and causes significant losses in both fish stock. Some experimental investigations have shown that other cyprinid or non-cyprinid species may be asymptomatically susceptible to this virus and might play roles as potential carriers of CyHV-3 or might contribute to persistence of this virus in environment. Therefore, it seems important to verify not only the susceptibility of other cyprinid or non-cyprinid species, but also their ability to transmit CyHV-3 infection to susceptible species. Our previous investigation of the susceptibility of the topmouth gudgeon (Pseudorasbora parva) did not reveal the presence of CyHV-3 DNA in the tissues of this species after cohabitation with infected koi. Consequently, we changed the experimental conditions and applied two stress factors (removal of skin mucus and scaring) which would presumably mimic the stress most commonly encountered in the wild. Both experiments (without and with stress factors) consisted of primary and secondary challenges. In both the no-stress and stress experiments, the first challenge was focused only on testing the susceptibility of the topmouth gudgeon to the virus. With the secondary challenge, we investigated potential viral transmission from the topmouth gudgeon to healthy naive koi after exposure to stress factors. All fish (dead, surviving and sacrificed) were tested for the presence of CyHV-3 DNA using nested PCR (no-stress experiment) and real-time PCR (stress experiment). After the primary challenge of the no-stress experiment, PCR did not reveal the presence of CyHV-3 DNA in any specimen of cohabitated topmouth gudgeon, but all specimens of dead koi were CyHV-3 DNA-positive. PCR of fish tissues subjected to the secondary challenge did not show the transfer of virus to naive fish. After exposure to stress (removal of skin mucus), qPCR revealed four out of five samples (80%) of topmouth gudgeon to be positive for CyHV-3 DNA. Two out of five samples (40%) of topmouth gudgeon treated by scaring were found to be positive for the presence of viral DNA. Real-time PCR after the secondary challenge did not reveal any viral DNA positivity in specimens of topmouth gudgeon from groups previously exposed to stress. The stress experiments show that removal of skin mucus might potentially lead to susceptibility of topmouth gudgeon to CyHV-3 infection, but the transmission of the virus to koi carp was not observed.

10

Záhorská, Eva, Vladimír Kováč, Kristína Švolíková, and Andrzej Kapusta. "Reproductive parameters of topmouth gudgeon (Pseudorasbora parva) from a heated Lake Licheńskie (Poland)." Open Life Sciences 9, no. 2 (February 1, 2014): 212–19. http://dx.doi.org/10.2478/s11535-013-0252-3.

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AbstractTemperature regime is known to have considerable influence on the life-histories of fish. Topmouth gudgeon is a very successful invader with high biological flexibility and phenotypic plasticity. The flexibility of topmouth gudgeon in a normal thermal regime has been well described, however there has been no information published about how it would cope with extreme conditions, e.g. permanently heated water. Several studies have demonstrated that phenotypic plasticity provides an important advantage to invasive species. To explain their invasion success, the theory of alternative ontogenies and invasive potential has been proposed. The aim of the present study was to examine if the reproductive parameters of a population living in permanently heated water differ from those living in habitats with a normal temperature regime, as well as to test a hypothesis derived from the theory of alternative ontogenies and invasive potential. Over a period of 8 years (2004–2011), a high variation in the reproductive parameters of topmouth gudgeon from Lake Licheńskie was found. With a small exception, all the observed results met the expectations predicted by the hypothesis tested. This indicates that topmouth gudgeon retains high phenotypic plasticity in life-history traits even in a habitat with extreme conditions, which is important for the species’ invasion success.

11

Fessler, H., and T. H. Hyde. "Stress distribution in gudgeon pins." Journal of Strain Analysis for Engineering Design 32, no. 5 (July 1, 1997): 375–86. http://dx.doi.org/10.1243/0309324971513490.

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Frozen stress photoelastic tests were carried out on four shapes of gudgeon pins, loaded in a piston of realistic shape by a realistic connecting rod. The results showed that the greatest stresses occurred in the gaps between the piston and connecting rod at the horizontal position in the bore. Measured compressive hoop stresses and calculated shear stresses there were up to 2 1/2 times the mean shear stress. Thick ring calculations slightly overpredicted the compressive stresses and the tensile hoop stresses at the vertical position, i.e. they are 'safe’. The greatest axial stresses were smaller than the above. Measured pin deflections between the piston bosses were less than the results of simple beam calculations, which ignored the restraints exerted by the piston. Ovalization of the cross-section was largest in the middle.

12

Czerniejewski, Przemysław, Kinga Zatoń, Natalia Kasowska, and Adam Brysiewicz. "Age structure, condition and length increase of the topmouth gudgeon (Pseudorasbora parva Schlegel 1842) in non-native populations of small rivers of Poland." Journal of Water and Land Development 40, no. 1 (March 1, 2019): 113–18. http://dx.doi.org/10.2478/jwld-2019-0012.

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Abstract Monitoring studies of ichthyofauna, in particular non-indigenous species, are an important element of research on aquatic ecosystems. This information is essential for modelling population growth and predicting rates of expansion, quantifying ecological impacts and assessing the efficacy of removal and control strategies. Actually, the most compelling fish invasion in Polish freshwaters is arguably the accidental introduction of the topmouth gudgeon (Pseudorasbora parva). Age and lengths structure, condition factor and growth rate of the invasive populations of the topmouth gudgeon from small Polish rivers was examined. The samples were collected from the rivers: Molnica (n = 41), Myśla (n = 21) and Wardynka (n = 101) soon after the invasion was recorded (2017). Estimated ages of topmouth gudgeon ranged from 1+ to 3+ for the Myśla River, from 1+ do 4+ for the Molnica River, and from 1+ to 5+ for the Wardynka River. The fish from the Molnica River was characterised by the lowest total and standard length (TL, SL), weight, and highest condition. The results of back-calculations and the parameters of von Bertalanffy’s growth equation revealed distinct disproportions in the standard length (mm) in individual age groups (Molnica River: Lt = 54.94 [1 – e−0.68885 (1 − 0.003404)], Myśla River: Lt = 55.39 [1 – e−0.74921 (1 – 0.030962)], Wardynka River: Lt = 66.33 [1 – e−0.69348 (1 – 0.369505)]). The introduction of the topmouth gudgeon occurred in the upper and medium sectors of small rivers, but in subsequent years the species migrated to new sites further downstream and this may have affected the native ichthyofauna.

13

Weber, Sebastian, Sebastian Weber, and Walter Traunspurger. "Consumption and prey size selection of the nematode Caenorhabditis elegans by different juvenile stages of freshwater fish." Nematology 16, no. 6 (2014): 631–41. http://dx.doi.org/10.1163/15685411-00002793.

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Meiofauna, and nematodes in particular, play an essential role in the diet of certain juvenile freshwater fish. However, the specific consumption and prey size selection of fishes on nematodes is largely unrecognised. In this study, the effects of different juvenile stages of widely distributed common European freshwater fish, gudgeon (Gobio gobio), roach (Rutilus rutilus), ninespine stickleback (Pungitius pungitius), and two strains of common carp (Cyprinus carpio (scaled) and C. carpio (mirror)), on abundances of the nematode Caenorhabditis elegans were investigated in controlled laboratory experiments with a known number of prey. Gudgeon, carp (scaled), and carp (mirror) consumed significant amounts of nematodes, whereas the roach and ninespine stickleback did not. Both strains of common carp reduced nematode abundance dependent on the size of the fish, with smaller fish causing a greater reduction than medium-size or large fish, although fish of all sizes fed significantly on nematodes of all size classes (<0.5, 0.5-1.0 and >1.0 mm). While the gudgeon also reduced nematode abundance dependent on the size of the fish, with increasing body length there was a dietary shift towards larger nematode size classes (0.5-1.0 and >1.0 mm). Morphometric analysis of the branchial basket indicated that the mesh width of gudgeon and both strains of common carp, but not of roach and ninespine stickleback, is suitable for feeding on specific size classes of nematodes. Together, the results showed that nematodes are used as a food source for different juvenile stages of certain species of freshwater fish.

14

Herlan, Herlan, and Tuah Nanda Merlia Wulandari. "Growth Parameters of Sentani Gudgeon Fish (Oxyeleotris heterodon) in Sentani Lake, Papua." Journal of Global Sustainable Agriculture 2, no. 1 (December 12, 2021): 10. http://dx.doi.org/10.32502/jgsa.v2i1.3816.

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ABSTRACTThe Sentani Gudgeon Fish (Oxyeleotris heterodon, Weber 1907) from the family Butidae with the general name Sentani Gudgeon is known locally as Gabus Malas and Himen. Sentani Snakehead Fish is one source of animal protein that is very important for the community around Lake Sentani. The population of the Sentani Gudgeon Fish species is at a crucial level. The issue could be affected by environmental pressures, continuous catches, competition with introduced species from outside Papua, intensive predation systems, and imbalances in ecological systems. The condition made a decline in population size until it became extinct. Gudgeon Sentani fish is the main target of catching in the lake. This condition significantly affects stock, size when first captured, population decline, reproductive cycle, and average catch. Until now, data and information on the growth of snakehead fish as the basis for fisheries management in the waters of Lake Sentani are not widely known. Considering the importance of preserving the native species of Lake Sentani, especially the Snakehead Fish, efforts to manage the fisheries in Lake Sentani's waters are urgent. This research was conducted in March - October 2020, located at Lake Sentani. The specimens were obtained from the catch of fishers with various gill nets and chopsticks. Enumerators or field assistants assisted the recording of the number and measurement of the total length of fish caught by fishermen daily. The results of the analysis showed: asymptotic size (L?) 46.20 cm, growth coefficient (K) 0.29, the total mortality rate (Z) 0.80 per year, natural mortality (M) 0.74 per year, the mortality rate due to fishing (F) 0.06 per year and exploitation rate (E) 0.075 per year.

15

Kłosiński, Piotr, Jarosław Kobak, Mateusz Augustyniak, Roman Pawlak, Łukasz Jermacz, Małgorzata Poznańska-Kakareko, and Tomasz Kakareko. "Behavioural responses to con- and heterospecific alarm cues by an alien and a coexisting native fish." Hydrobiologia 849, no. 4 (November 27, 2021): 985–1000. http://dx.doi.org/10.1007/s10750-021-04761-0.

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AbstractThe monkey goby Neogobius fluviatilis is an invasive Ponto-Caspian fish that enters habitats of the native gudgeon Gobio gobio in European freshwaters, likely belonging to the same prey guild. Their abilities to detect and avoid predation have been poorly understood, although these traits may contribute to the competitive advantage and drive the invasion success of the goby. We tested intra- and interspecific responses of fish from sympatric populations to damage-released alarm cues (skin extract) in laboratory. Both species of fish responded to conspecific and heterospecific cues, but their responses to conspecifics were more diverse (changed social distancing among individuals, reduced vertical and horizontal movement) than those elicited by heterospecifics (changed social distancing only). Moreover, the fish differed in their anti-predation behaviour: the gudgeon increased whilst the monkey goby decreased inter-individual distances and only the gudgeon exhibited thigmotaxis and reduced mobility in response to the conspecific cues. Interspecific differences show that the species exhibit distant anti-predation strategies. This might be associated with their phylogenetic distance and/or higher differentiation of their ecological niches than commonly assumed. Besides, our results suggest that alien species be included in the interspecific exchange of information in local fish assemblages.

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McFadden, PD, and SR Turnbull. "A study of the secondary piston motion arising from changes in the piston skirt profile using a simplified piston skirt model." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 227, no. 1 (April 19, 2012): 38–47. http://dx.doi.org/10.1177/0954406212444509.

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An existing model of the interface between a parallel-sided piston skirt and the cylinder wall in an internal combustion engine is extended to allow the modelling of barrelling of the piston skirt. The effects of the skirt profile on the secondary motion of the piston and on the distribution of pressure in the lubricant film are examined. It is shown that piston secondary motion, and in particular rotation of the piston about the gudgeon pin, which might contribute to wear of the cylinder, can be reduced by appropriate positioning of the maximum diameter of the piston skirt in relation to the gudgeon pin and the centre of mass of the piston.

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Palíková, M., and R. Krejčí. "Artificial stripping and embryonic development of the common gudgeon (Gobio gobio L.) and its use in embryo-larval tests – a pilot study." Czech Journal of Animal Science 51, No. 4 (December 5, 2011): 174–80. http://dx.doi.org/10.17221/3926-cjas.

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Artificial reproduction with and without hormonal treatment was performed in females of the common gudgeon (Gobio gobio L.) to assess the suitability of this cyprinid species as a fish model for embryo-larval cytotoxic tests. Considering sperm immobilisation tests, the solution for tench was utilizable. The clearing solution designed for the observation of embryonic development in the European catfish was also found suitable for the common gudgeon embryos. The egg and embryonic mortality, embryonic development, hatching and survival rate were examined. Ovulation occurred in 89% of females after the application of the carp pituitary (5 mg/kg) but embryonic mortality reached nearly 100%. The highest embryonic mortality in females with hormonal treatment was observed within 24 hours of development. On the other hand, the reproduction of females without the application of hormonal stimulation was nearly completely successful with mean mortality 60%. The hatching of embryos of females without hormonal stimulation occurred (average values) 71 hours after fertilization and lasted 65 hours. Embryonic development finished within 176 hours. Our pilot study demonstrated that the eggs of common gudgeon were suitable for embryo-larval tests from the 7<sup>th</sup> to the 8<sup>th</sup> embryonic developmental stage.  

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Xu, Dandan, Ping Li, Yaoguang Zhang, and Zuogang Peng. "Comparative study of the complete mitochondrial genomes of the bronze gudgeon (Coreius heterodon) and largemouth bronze gudgeon (Coreius guichenoti)." Mitochondrial DNA 24, no. 3 (November 29, 2012): 189–90. http://dx.doi.org/10.3109/19401736.2012.744979.

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Koshelev, V. N., and N. V. Kolpakov. "Species composition and distribution of fishes and prawns in the Amur River channel." Izvestiya TINRO 200, no. 2 (July 5, 2020): 292–307. http://dx.doi.org/10.26428/1606-9919-2020-200-292-307.

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istribution of fishes and prawns in the Amur River (40–960 km from the mouth) is described on results of the beam-trawl survey conducted in September-October, 2003 (57 trawl stations at the depth of 1.5–23.0 m). In total, 2584 ind. of 22 fish species and 1077 ind. of 1 invertebrate species (prawn Palaemon modestus) were caught. The highest species richness was registered for orders Cypriniformes (13 species) and Siluriformes (4 species). The fish and prawn stocks were evaluated as 32.161 . 106 ind. (583.8 t) for bottom and near-bottom fish and 4.887 . 106 ind. (8.8 t) for prawns. Two commercial fish species were the most abundant: catfishes Tachysurus brashnikowi (16.26 . 106 ind. or 32.9 % of total biomass) and T. sinensis (4.32 . 106 ind. or 24.0 % of total biomass); other 6 fish species with considerable biomass were lizard gudgeon Saurogobio dabryi (12.6 %), ussuri catfish T. ussuriensis (9.7 %), amur white-pinned gudgeon Romanogobio tenuicorpus (7.8 %), amur sturgeon Acipenser schrenckii (5.6 %), amur gudgeon Gobio cynocephalus (2.4 %), and kaluga Huso dauricus (0.6 %). Distribution density varied in the range of 0.01–2.57 g/m2 (on average 0.45 ± 0.27 g/m2) for fish and 0.005–0.044 g/m2 (0.021 ± 0.012 g/m2) for prawns. Abundance of both fish and prawns increased multifold towards the Amur mouth that correlated with increasing of forage benthos biomass in the same direction. So, the main portion of fish biomass (82.4 %) was distributed in the Amur River downstream (40–400 km from the mouth) and the prawn stock was concentrated completely in its lowermost part (50–150 km from the mouth).

20

Blažek, R., J. Jarkovský, B. Koubková, and M. Gelnar. "Seasonal variation in parasite occurrence and microhabitat distribution of monogenean parasites of gudgeon Gobio gobio (L.)." Helminthologia 45, no. 4 (December 1, 2008): 185–91. http://dx.doi.org/10.2478/s11687-008-0037-9.

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AbstractSeasonal changes in occurrence, infracommunity composition and microhabitat distribution of the monogenean parasites of gudgeon Gobio gobio (L.) were studied during two years in the River Haná (Czech Republic). Altogether 212 specimens of gudgeon were examined and a total of 6456 specimens of eight monogenean species were recorded: Dactylogyrus cryptomeres, Gyrodactylus gobiensis, Gyrodactylus gobii, Gyrodactylus gasterostei, Gyrodactylus vimbi, Gyrodactylus markakulensis, Gyrodactylus sedelnikowi and Paradiplozoon homoion. The occurrence of monogeneans correlated with seasonal changes of water temperature. In 2001, gyrodactylids peaked in March and D. cryptomeres in May, whereas in 2002, gyrodactylids peaked in May and D. cryptomeres in July. The majority of specimens of all Gyrodactylus species were found on the fins; the remaining specimens of Gyrodactylus were located on the body surface and gills, and all Dactylogyrus and Paradiplozoon specimens were located on the gills. The microhabitat distribution of the monogeneans changed in relation to changing water temperature and intensity of infection.

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Maerten, Evelien, Marcel Eens, and Guy Knaepkens. "Performance of a pool-and-weir fish pass for small bottom-dwelling freshwater fish species in a regulated lowland river." Animal Biology 57, no. 4 (2007): 423–32. http://dx.doi.org/10.1163/157075607782232134.

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AbstractAlthough small benthic freshwater fish species are an important biological component of fish assemblages and free instream movement is indispensable for their survival, they are often neglected in fish pass performance studies. In this study, a capture-mark-recapture approach was used to assess whether small bottom-dwelling species, including gudgeon (Gobio gobio), stone loach (Barbatula barbatula), spined loach (Cobitis taenia) and bullhead (Cottus gobio), were able to cross a pool-and-weir fish pass in a regulated lowland river. Some tagged individuals of stone loach (18%), gudgeon (7%) and spined loach (2%) managed to successfully ascend the fish pass under study, despite the fact that water velocity levels in the different overflows of the facility (between 0.55-1.22 m/s) exceeded the critical swimming speed of all three species. Although this suggests that a pool-and-weir fish pass is a able to facilitate upstream movement of some small benthic species in a regulated river, more detailed research incorporating advanced tagging and retrieving techniques is necessary.

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Valen, Fitri Sil, Veryl Hasan, Felipe P. Ottoni, Ayu Lana Nafisyah, Mugi Erwinda, Ana Nur Annisa, and M. A. Adis. "First country record of the bearded gudgeon Pogoneleotris heterolepis (Günther, 1869) (Teleostei: Eleotridae) from Indonesia." IOP Conference Series: Earth and Environmental Science 1036, no. 1 (July 1, 2022): 012074. http://dx.doi.org/10.1088/1755-1315/1036/1/012074.

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Abstract A bearded gudgeon Pogoneleotris heterolepis (Günther, 1869) with c. 19 cm of total length was photographed on 10 June 2021 in Kapuas river, West Kalimantan province, Indonesia. This rare finding is represent a first country record of P. heterolepis in Indonesia after previously only recorded in Sarawak, Malaysia.

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Kirtiklis, Lech, Alicja Boroń, and Katarzyna Poprycka. "Chromosome banding patterns of the gudgeon, Gobio gobio (Actinopterygii, Cyprinidae)." Acta Ichthyologica et Piscatoria 35, no. 2 (December 31, 2005): 119–23. http://dx.doi.org/10.3750/aip2005.35.2.08.

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Záhorská, Eva, Vladmir Kováč, and Stanislav Katina. "Age and growth in a newly-established invasive population of topmouth gudgeon." Open Life Sciences 5, no. 2 (April 1, 2010): 256–61. http://dx.doi.org/10.2478/s11535-010-0002-8.

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AbstractSpecimens of invasive topmouth gudgeon, Pseudorasbora parva, from Šúr Pond (Bratislava, Slovakia) were examined to assess age and growth, and to determine whether this recently-established invasive population employs a less specialized ontogenetic trajectory than the specialized form typical of native and/or long-time established populations. Samples were collected in October 2004 (n=143). Standard length (SL) ranged from 18.16 mm to 67.57 mm (mean 32.56 mm), and eviscerated body weight ranged from 0.10 to 5.02 g (mean 0.63 g). Scale caudal diameter ranged from 0.52 to 2.42 mm (mean 1.08 mm). SL at which the scales started to form was estimated to be 1.58 mm. The population was represented with 5 age groups, from 0+ to 4+. Relative to other populations for which comparable data are available the recently-established population of topmouth gudgeon was found to mature at smaller size and at a younger age compared to native and/or long-time established populations (all specimens bigger than 25.0 mm SL, and 94% of specimens from the age group I were already mature).

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Guzzomi, A. L., D. C. Hesterman, and B. J. Stone. "Variable inertia effects of an engine including piston friction and a crank or gudgeon pin offset." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 222, no. 3 (March 1, 2008): 397–414. http://dx.doi.org/10.1243/09544070jauto590.

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In order to obtain greater accuracy in simulation, more sophisticated models are often required. When it comes to the torsional vibration of reciprocating mechanisms the effect of inertia variation is very important. It has been shown that the inclusion of this variation increases model accuracy for both single-cylinder and multi-cylinder engine torsional vibration predictions. Recent work by the present authors has revealed that piston-to-cylinder friction may modify an engine's ‘apparent’ inertia function. Kinematic analysis also shows that the piston side force and the dynamic piston-to-cylinder friction are interdependent. This has implications for engine vibration modelling. Most modern engines employ a gudgeon pin offset, and there is a growing interest in pursuing large crank offsets; hence, the effect of these on inertia variation is also of interest. This paper presents the derivation of the inertia function for a single engine mechanism, including both piston-to-cylinder friction and crank or gudgeon pin offset, and investigates the effect of each through predictions. The effect of crank offset on the variable inertia function is also verified by experiment.

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Takács, Péter. "Morphometric differentiation of gudgeon species inhabiting the Carpathian Basin." Annales de Limnologie - International Journal of Limnology 48, no. 1 (2012): 53–61. http://dx.doi.org/10.1051/limn/2011058.

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Dong, Fang, Guang-Xiang Tong, You-Yi Kuang, and Xiao-Wen Sun. "Complete mitochondrial genome sequence ofRomanogobio tenuicorpus(Amur whitefin gudgeon)." Mitochondrial DNA 26, no. 6 (January 10, 2014): 947–48. http://dx.doi.org/10.3109/19401736.2013.865169.

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Zhou, Qiao, Ying-Xiong Hu, Qin Ye, Yang Xue, Da-Qing Chen, and Yun Li. "Mitochondrial genome of silver gudgeon,Squalidus argentatus(Teleostei, Cypriniformes)." Mitochondrial DNA 27, no. 1 (January 22, 2014): 151–52. http://dx.doi.org/10.3109/19401736.2013.878919.

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TURAN, DAVUT, CÜNEYT KAYA, ESRA BAYÇELEBİ, İSMAİL AKSU, and YUSUF BEKTAŞ. "Gobio baliki, a new gudgeon from Turkey (Teleostei: Cyprinidae)." Zootaxa 4350, no. 2 (November 17, 2017): 284. http://dx.doi.org/10.11646/zootaxa.4350.2.4.

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Gobio baliki, new species, is described from the stream Büyük Melen in the northwestern Anatolian Black Sea basin. The new species is distinguished from other gudgeons in Anatolia by the breast being completely covered by scales, scales extending slightly behind the isthmus; 5–6 scales between the posterior extremity of the pelvic-fin base and the anus; the distance between the anus and the anal-fin origin 7–10% SL; the postorbital distance equal to or greater than the snout length; the depth of the anal-fin approximately equal to the length of the pelvic-fin; 8–9 midlateral black blotches, usually separated from each-other

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Yin, Chengjie, Yushun Chen, Longgen Guo, and Leyi Ni. "Fish Assemblage Shift after Japanese Smelt (Hypomesus nipponensis McAllister, 1963) Invasion in Lake Erhai, a Subtropical Plateau Lake in China." Water 13, no. 13 (June 29, 2021): 1800. http://dx.doi.org/10.3390/w13131800.

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The introduction of non-native fish species is known to have adverse effects on aquatic ecosystems, but their effect on plateau lakes is not well studied. In this study, we examined the effect of the Japanese smelt (Hypomesus nipponensis) invasion on the fish assemblage in Lake Erhai, a subtropical plateau lake in southwestern China. Through cluster analysis and non-metric multidimensional scaling (NMDS), we found a significant fish assemblage shift: the population of sharpbelly (Hemiculter leucisculus) fell by 67% in catch per unit effort (CPUE) from 2.262 to 0.741; topmouth gudgeon (Pseudorasbora parva) fell by 52% from 0.61 to 0.29; and icefish (Neosalanx taihuensis) plummeted by 88% from 0.736 to 0.088. Meanwhile, the numbers for crucian carp (Carassius auratus) improved by almost 185% from 1.82 to 3.36. A Pearson correlation analysis showed that these four species significantly correlated with the invasion of the Japanese smelt: sharpbelly (−0.71), topmouth gudgeon (−0.71), icefish (−0.62), and crucian carp (0.81). This study documented the expansion of invasive fish and their effects on native species over time, thus providing a case study of invasive fish as well as a theoretical basis for further research into interspecies interactions.

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Kobayashi, Toru, Akito Takeda, and Kanta Hara. "Efficient Production of Doubled Haploids as Isogenic Line Founders via Double Heat Shock Treatment in Willow Gudgeon (Gnathopogon caerulescens)." Aquaculture Research 2023 (February 6, 2023): 1–17. http://dx.doi.org/10.1155/2023/9783381.

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Doubled haploids (DHs) are essential founders for breeding via isogenic line production. We determined the optimal timing of the first and second (HST1 and HST2) double heat shock treatment for DH production in the willow gudgeon (Gnathopogon caerulescens). Gynogenesis was induced by fertilisation with UV-irradiated sperm (20 mJ/cm2). Each HST was performed at 40.5°C for 1 min. In experiment I, HST1 was applied 23–31 min after the induction of gynogenetic development (incubated at 20°C). HST2 was performed 15 min after HST1 treatment. When HST1 was started 25–26 min after activation, normally hatched larvae appeared relatively frequently (35.6–100%), and most were DHs. In experiment II, HST1 was started 26 min after activation, and HST2 was started 10–25 min after HST1. Starting HST2 10 min after HST1 resulted in 33% more normally hatched larvae than starting 22.5–25 min after. DHs were prevalent among hatched larvae (45.1% and 20.8%, respectively) when performing HST2 10–12.5 min after HST1. Under appropriate HST1 and HST2 timing, gynogens were at the zygote stage, early prophase, and prophase or early prometaphase of the first cell cycle. These results establish the appropriate timing of HST1 and HST2 for the induction of willow gudgeon DHs.

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Balcombe, Stephen R., and Gerard P. Gloss. "Variation in Carp Gudgeon (Hypseleotrisspp.) Catch Rate in Dense Macrophytes." Journal of Freshwater Ecology 15, no. 3 (September 2000): 389–95. http://dx.doi.org/10.1080/02705060.2000.9663757.

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Lv, Wei-Hua, Ding-Chen Cao, Jing Wu, Xian-Hu Zheng, Xiao-Wen Sun, and Yunqin Yan. "The complete mitochondrial genome sequence of Silver Gudgeon (Gnathopogon argentatus)." Mitochondrial DNA 27, no. 1 (January 17, 2014): 24–25. http://dx.doi.org/10.3109/19401736.2013.867442.

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Student. "A MUCH-NEEDED NEW MEDICAL TERM IS BORN." Pediatrics 79, no. 4 (April 1, 1987): A64. http://dx.doi.org/10.1542/peds.79.4.a64a.

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A slip of the typewriter has created a term which fills a need. "Clinical gudgement" is obviously derived from "gudgeon"—a gullible person, or, from the fish of that name, one who will swallow anything (Shorter Oxford English Dictionary, 1968). The term must refer to the practice of making clinical decisions on shaky or absent evidence; the complement, in fact, to the more familiar term. How about a "gudgement of the month" award?

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Hamilton, Serena H., Carmel A. Pollino, and Keith F. Walker. "Regionalisation of freshwater fish assemblages in the Murray–Darling Basin, Australia." Marine and Freshwater Research 68, no. 4 (2017): 629. http://dx.doi.org/10.1071/mf15359.

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Regionalisations based on species assemblages are a useful framework for characterising ecological communities and revealing patterns in the environment. In the present study, multivariate analyses are used to discern large-scale patterns in fish assemblages in the Murray–Darling Basin, based on information from the Murray–Darling Basin Authority’s first Sustainable Rivers Audit (SRA), conducted in 2004–2007. The Basin is classified into nine regions with similar historical fish assemblages (i.e. without major human intervention), using data that combine expert opinion, museum collections and historical records. These regions are (1) Darling Basin Plains, (2) Northern Uplands, (3) Murray Basin Plains, (4) Northern Alps, (5) Central East, (6) Avoca Lowland, (7) Southern Slopes, (8) Southern Alps and (9) South-Western Slopes. Associations between assemblages and physical variables (catchment area, elevation, hydrology, precipitation, temperature) are identified and used to reinforce the definitions of regions. Sustainable Rivers Audit data are compared with the historical assemblages, highlighting species whose range and abundance have changed since the early 19th century. Notable changes include declines in native species such as silver perch, river blackfish, mountain galaxias, Macquarie perch, trout cod and freshwater catfish, and the advent of alien species including common carp, eastern gambusia, goldfish, redfin perch, brown trout and rainbow trout. Less significant declines are evident for native carp gudgeons, golden perch, two-spined blackfish, bony herring and flathead gudgeon. Changes are evident even in regions where habitats have been little disturbed in the past 200 years.

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Yulsyofriend, Yulsyofriend, Vivi Anggraini, and Indra Yeni. "Dampak Gudget Terhadap Perkembangan Bahasa Anak Usia Dini." Pedagogi : Jurnal Anak Usia Dini dan Pendidikan Anak Usia Dini 5, no. 1 (July 20, 2019): 25. http://dx.doi.org/10.30651/pedagogi.v5i1.2889.

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ICT (Information and Communication Technologies) adalah payung besar terminologi yang mencakup seluruh peralatan teknis untuk memproses dan menyampaikan informasi. Gudget adalah salah satu dari ICT yang sangat berperan penting terhadap perkembangan anak usia dini. Sesuai dengan tujuan utama pendidikan anak usia dini adalah untuk mengembangkan seluruh aspek perkembangan anak usia dini dengan memberikan stimulus-stimulus berupa kegiatan bermain yang menyenangkan dan mampu mengintegrasikan kemampuan anak usia dini secara optimal. Perkembangan Bahasa pada anak usia dini merupakan hal yang paling berfungsi dan berperan dalam kehidupan anak. Namun dengan adanya penggunaan gudged memiliki pengaruh terhadap keterampilan berbahasa anak yang mencakup dalam memperoleh keterampilan berbahasa, biasanya melalui suatu hubungan urutan yang teratur: pembiasaan pada masa kecil, belajar menyimak/mendengarkan bahasa, kemudian berbicara, membaca, dan menulis. Namun dengan menggunakan gudget berdampak terhadap keterlambatan dalam berbicara anak hal ini disebabkan karena gudget menghambat komunikasi langsung terhadap lingkungan sekitar.Kata Kunci: Gudget, Perkembangan bahasa, dan Anak Usia DiniABSTRACTInformation and Communication Technologies (ICT) is a large of terminology that covers all technical equipment to process and convey information. Gudgets are one of the most important ICTs for early childhood development. In accordance with the main purpose of early childhood education is to develop all aspects of early childhood development by providing stimuli in the form of play activities that are able to integrate early childhood abilities optimally. Language development in early childhood is the most function and role in life. However, with the use of gudged has a major influence on children's language skills that include language. In acquiring language skills we usually go through a regular sequence relationship: first, in childhood, we learn to listen / listen to language, then speak, read, and write.Keywords: Gudget, Language Development, and Early Childhood

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Caon, Martin, Raymond Hickman, Robert Gabb, and Robert Brandle. "Water quality parameters and population characteristics for the Flinders Ranges Gudgeon." Transactions of the Royal Society of South Australia 145, no. 1 (January 2, 2021): 1–24. http://dx.doi.org/10.1080/03721426.2021.1913540.

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KOIZUMI, NORIYUKI, HIDEAKI TAKAHASHI, MITSURU MINEZAWA, TAKESHI TAKEMURA, and SHUJI OKUSHIMA. "Fourteen polymorphic microsatellite loci in the field gudgeon,Gnathopogon elongatus elongatus." Molecular Ecology Notes 7, no. 2 (October 25, 2006): 240–42. http://dx.doi.org/10.1111/j.1471-8286.2006.01568.x.

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Xue, Yang, Hui-Juan Chen, Yang Li, Min Tang, Hong-Jun Chen, Qin Ye, and Yun Li. "Mitochondrial genome of the sucking disc gudgeon,Discogobio yunnanensis(Teleostei, Cypriniformes)." Mitochondrial DNA 27, no. 2 (August 27, 2014): 1451–52. http://dx.doi.org/10.3109/19401736.2014.953088.

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Ding, Xin-Hua, Kui-Ching Hsu, Wen-Qiao Tang, Dong Liu, Yu-Min Ju, Hung-Du Lin, and Jin-Quan Yang. "Genetic diversity and structure of the Chinese lake gudgeon (Sarcocheilichthys sinensis)." Mitochondrial DNA Part A 31, no. 6 (June 17, 2020): 228–37. http://dx.doi.org/10.1080/24701394.2020.1779239.

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Hwang, Dae-Sik, Hwa Kun Byeon, and Jae-Seong Lee. "Complete mitochondrial genome of the freshwater gudgeon,Gobiobotia nakdongensis(Cypriniformes, Gobioninae)." Mitochondrial DNA 24, no. 4 (February 6, 2013): 409–10. http://dx.doi.org/10.3109/19401736.2013.763247.

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Hwang, Dae-Sik, Wan-Ok Lee, and Jae-Seong Lee. "Complete mitochondrial genome of the freshwater gudgeon,Pseudopungtungia nigra(Cypriniformes, Gobioninae)." Mitochondrial DNA 25, no. 1 (March 14, 2013): 1–2. http://dx.doi.org/10.3109/19401736.2013.775260.

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Hwang, Dae-Sik, Hwa Kun Byeon, and Jae-Seong Lee. "Complete mitochondrial genome of the freshwater gudgeon,Pseudopungtungia tenuicorpa(Cypriniformes, Gobioninae)." Mitochondrial DNA 25, no. 1 (March 14, 2013): 3–4. http://dx.doi.org/10.3109/19401736.2013.775261.

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Hwang, Dae-Sik, Ho-Bok Song, and Jae-Seong Lee. "Complete mitochondrial genome of the freshwater gudgeon,Microphysogobio koreensis(Cypriniformes, Cyprinidae)." Mitochondrial DNA 25, no. 1 (March 14, 2013): 15–16. http://dx.doi.org/10.3109/19401736.2013.775267.

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Hwang, Dae-Sik, Hwa Kun Byeon, and Jae-Seong Lee. "Complete mitochondrial genome of the freshwater gudgeon,Gobiobotia macrocephala(Cypriniformes; Cyprinidae)." Mitochondrial DNA 25, no. 1 (March 14, 2013): 31–32. http://dx.doi.org/10.3109/19401736.2013.775275.

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Hwang, Dae-Sik, Hwa Kun Byeon, and Jae-Seong Lee. "Complete mitochondrial genome of the freshwater gudgeon,Gobiobotia brevibarba(Cypriniformes; Cyprinidae)." Mitochondrial DNA 25, no. 1 (March 26, 2013): 33–34. http://dx.doi.org/10.3109/19401736.2013.775276.

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Zhou, Zanhu, Haiyan Zhang, Genfang Wang, and Tianling Zheng. "Complete mitochondrial genome of Chinese lake gudgeon Sarcocheilichthys sinensis (Cypriniformes, Cyprinidae)." Mitochondrial DNA 26, no. 1 (September 5, 2013): 141–42. http://dx.doi.org/10.3109/19401736.2013.815176.

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Zheng, Xian Hu, Ding Chen Cao, Wei Hua Lv, Jing Wu, and Xiao Wen Sun. "The complete mitochondrial genome sequence of Chinese lizard gudgeon (Saurogobio dabryi)." Mitochondrial DNA 26, no. 5 (December 2, 2013): 708–9. http://dx.doi.org/10.3109/19401736.2013.843085.

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Xu, Hao, Yang Xue, Qin Ye, Xi Luo, Hong-Jian Lü, Da-Qing Chen, and Yun Li. "Mitochondrial genome of the flat-lip gudgeon,Platysmacheilus exiguus(Teleostei, Cypriniformes)." Mitochondrial DNA 27, no. 1 (January 22, 2014): 153–54. http://dx.doi.org/10.3109/19401736.2013.878920.

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Nakajima, Jun, and Norio Onikura. "Larval and juvenile development of Pike Gudgeon, Pseudogobio esocinus (Cyprinidae: Gobioninae)." Ichthyological Research 62, no. 3 (October 15, 2014): 268–73. http://dx.doi.org/10.1007/s10228-014-0436-5.

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Journal articles on the topic 'Gudgeon'

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