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Journal articles on the topic 'Bullhead'

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Published: 4 June 2021

Last updated: 8 February 2022

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1

Keast, Allen. "Implications of chemosensory feeding in catfishes: an analysis of the diets of Ictalurus nebulosus and I. natalis." Canadian Journal of Zoology 63, no. 3 (1985): 590–602. http://dx.doi.org/10.1139/z85-086.

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The implications of chemosensory feeding and associated ictalurid morphology were investigated through a seasonal study of the diets of the brown bullhead (Ictalurus nebulosus) and yellow bullhead (I. natalis) relative to food availability. Based on the attributes of chemosensory feeding (little discrimination between prey types) and bullhead morphology (poor sight, broad mouth), it was predicted that bullheads would be food generalists and opportunists, and that age-class diets would overlap. These predictions were generally supported for the brown bullhead. Some food types (amphipods) were h

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2

Hanke, G. F., M. C. E. McNall, and J. Roberts. "First Records of the Yellow Bullhead, Ameiurus natalis, a Loricariid Catfish, Panaque suttonorum, and a Silver Pacu, Piaractus cf. P. brachypomus, in British Columbia." Canadian Field-Naturalist 120, no. 4 (2006): 421. http://dx.doi.org/10.22621/cfn.v120i4.349.

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In Canada, there are no native catfish west of the continental divide and until recently, the list of extant exotic catfishes in British Columbia only included introduced Black Bullhead (Ameiurus melas) and Brown Bullhead (Ameiurus nebulosus). We report that a single Yellow Bullhead (Ameiurus natalis) was collected from Silvermere Lake in the Lower Fraser River drainage. This represents the first record of the Yellow Bullhead in western Canada, and its introduction likely was accidental with a shipment of Largemouth Bass (Micropterus salmoides) rather than dispersal from Washington. Warm, eutr

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3

Pinkney, Alfred E., John C. Harshbarger, Michael A. Rutter, and Peter C. Sakaris. "Trends in Liver and Skin Tumor Prevalence in Brown Bullhead (Ameiurus nebulosus) from the Anacostia River, Washington, DC, and Nearby Waters." Toxicologic Pathology 47, no. 2 (2019): 174–89. http://dx.doi.org/10.1177/0192623318823150.

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The prevalence of liver and skin tumors in brown bullhead ( Ameiurus nebulosus) from the Anacostia River (Washington, DC) and nearby areas was determined in 2014, 2015, and 2016. The objectives were to (1) compare tumor prevalence across space and time; (2) analyze the 1992–2016 Chesapeake Bay Tumor Database to identify reference locations and test age, length, weight, and sex as covariates; and (3) explore whether changes in bullhead exposure to contaminants can explain the observed trends. With logistic regression, we reported large statistically significant decreases in liver tumor probabil

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4

Navarro, I., and T. W. Moon. "Glucagon binding to hepatocytes isolated from two teleost fishes, the American eel and the brown bullhead." Journal of Endocrinology 140, no. 2 (1994): 217–27. http://dx.doi.org/10.1677/joe.0.1400217.

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Abstract We have characterized the specific binding of glucagon in hepatocytes isolated from two teleost species, the American eel (Anguilla rostrata) and the brown bullhead (Ictalurus nebulosus). Specific glucagon binding was 9·3 and 10·7% in bullhead and eel hepatocytes respectively, after a 2-h incubation at 12 °C. Curvilinear Scatchard plots suggest the presence of two classes of binding sites with apparent dissociation constants (Kd) of 1·97 nm (high affinity) and 17·3 nm (low affinity) for bullhead and 2·68 and 22·9 nm for eel cells. The number of high-affinity binding sites per cell was

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5

Novomeská, Andrea, Vladimír Kováč, and Stanislav Katina. "Morphometry of non-native black bullhead Ameiurus melas from Slovakia." Open Life Sciences 5, no. 6 (2010): 888–93. http://dx.doi.org/10.2478/s11535-010-0069-2.

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AbstractThe study on the external morphology of the non-native black bullhead (Ameiurus melas) was carried out on a population from Slovakia, based on triple regression and geometrical analysis. The breakpoints distribution in distance-based morphometric characters indicated that black bullhead reached its definitive phenotype early in ontogeny. Ontogenetic changes in external morphology occurred continuously throughout the whole size-range of the sample examined, and inter-individual morphological variation was very low. Such uniformity may reflect the possible founder effect and/or little ph

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6

Thomas, Joe. "Bullhead Sign." JCR Journal of Clinical Rheumatology 21, no. 2 (2015): 103. http://dx.doi.org/10.1097/rhu.0000000000000220.

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7

Baumann, Paul C., Michael J. Mac, Stephen B. Smith, and John C. Harshbarger. "Tumor Frequencies in Walleye (Stizostedion vitreum) and Brown Bullhead (Ictalurus nebulosus) and Sediment Contaminants in Tributaries of the Laurentian Great Lakes." Canadian Journal of Fisheries and Aquatic Sciences 48, no. 9 (1991): 1804–10. http://dx.doi.org/10.1139/f91-213.

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To better characterize neoplasm epizootics in the Great Lakes basin and their association with families of contaminants, we sampled five locations: the Fox and Menominee rivers, Lake Michigan; Munuscong Lake, St. Mary's River; and the Black and Cuyahoga rivers, Lake Erie. Frequencies of external and liver tumors were determined for brown bullhead (Ictalurus nebulosus) from all locations except the Black River and for walleye (Stizostedion vitreum) from the Lake Michigan and St. Mary's River sites. Sediment samples were analyzed for metals, polychlorinated aromatics, and polynuclear aromatic hy

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8

Davey, Andrew JH, George F. Turner, Stephen J. Hawkins, and C. Patrick Doncaster. "Mechanisms of density dependence in stream fish: exploitation competition for food reduces growth of adult European bullheads (Cottus gobio)." Canadian Journal of Fisheries and Aquatic Sciences 63, no. 3 (2006): 597–606. http://dx.doi.org/10.1139/f05-246.

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In field experiments using cage enclosures, exploitation competition for invertebrate prey reduced individual growth of adult European bullheads (Cottus gobio) despite a dietary shift that maintained total prey biomass consumption. Growth of bullheads was negatively density dependent over a range of densities found in the field and total biomass production per enclosure was unrelated to stocking density. Individuals grew faster when invertebrate densities were experimentally elevated above ambient levels, indicating that bullheads were food limited. Parallel dietary shifts in response to manip

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9

Lorenzoni, Massimo, Antonella Carosi, Massimo Giovannotti, Gianandrea La Porta, Andrea Splendiani, and Vincenzo Caputo Barucchi. "Population status of the native Cottus gobio after removal of the alien Salmo trutta: a case-study in two Mediterranean streams (Italy)." Knowledge & Management of Aquatic Ecosystems, no. 419 (2018): 22. http://dx.doi.org/10.1051/kmae/2018006.

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In the Mediterranean area, one of the major threats to freshwater fish fauna is represented by the introduction of alien species. The bullhead, Cottus gobio, is a species of great conservation interest threatened by the massive introduction of hatchery-reared brown trout, Salmo trutta, for angling purposes. The aims of this research were: i) to present a case-study of interspecific and intraspecific competition in dwelling fish from two Mediterranean streams (central Italy); ii) to evaluate the bullhead population status before and after the alien brown trout removal, and iii) to investigate t

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10

Vinginder, Csaba. "New Possibilities of Brown Bullhead (Ictalurus nebulosus) Farming." Acta Agraria Debreceniensis, no. 10 (May 11, 2003): 55–57. http://dx.doi.org/10.34101/actaagrar/10/3464.

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The brown bullhead (Ictalurus nebulosus) has been settled in Europe at the end of Century XIX from North America. In Hungary it has been brought in 1902. The naturalization of this species was successful because the brown bullhead found adequate conditions for its life and reproduction in Hungary. But it was unsuccessful because lost its excellent growth.In inland water habitats-and that’s why also fishponds-extraordinarily multiplied, but because of its slight growth this species is undesirable for the native farmers. The brown bullhead is concurrent for domestic fish species, on the other ha

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11

Vinginder, Csaba. "Results of Brown Bullhead Fingerling Rearing in Recirculating Fish Production Systems." Acta Agraria Debreceniensis, no. 16 (December 6, 2005): 46–50. http://dx.doi.org/10.34101/actaagrar/16/3288.

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Predator fish species are in great demand, both in fish production and consumption. Because of their rarity and perfect meat quality, these species have considerable economical significance and increasing domestic and foreign demand.The brown bullhead (Ictalurus nebulosus) has been in Hungary for more than 100 years, but not popular because of its early maturation rate, aggressive reproduction and slow growth. Despite of these properties, larger specimens (about 150-200 g) are marketable overseas.Our objective is to ensure the adequacy of the brown bullhead in intensive fish farming and its bi

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12

Soengas, J. L., and T. W. Moon. "Transport and metabolism of glucose in isolated enterocytes of the black bullhead ictalurus melas: effects of diet and hormones." Journal of Experimental Biology 201, no. 23 (1998): 3263–73. http://dx.doi.org/10.1242/jeb.201.23.3263.

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The uptake and metabolism of glucose were assessed in enterocytes isolated from black bullhead Ictalurus melas. The objective of this study was to examine the effects of diet and hormone treatment on glucose transport and metabolism, so the enterocyte was the most appropriate preparation. Glucose transport was estimated using specific inhibitors:glucose uptake measured in the presence of phlorizin presumably represents transport at the basolateral membrane, whereas glucose uptake in the presence of cytochalasin B presumably represents transport at the brush border. Feeding bullheads a standard

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13

Zhang, J., M. Desilets, and T. W. Moon. "Evidence for the modulation of cell calcium by epinephrine in fish hepatocytes." American Journal of Physiology-Endocrinology and Metabolism 263, no. 3 (1992): E512—E519. http://dx.doi.org/10.1152/ajpendo.1992.263.3.e512.

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The effect of epinephrine (10(-7) M) on cytosolic free-Ca2+ concentration ([Ca2+]i) and its dependency on external Ca2+ were studied in fura-2-loaded hepatocytes isolated from three teleost fish species: American eel, brown bullhead, and rainbow trout. Basal [Ca2+]i was similar in eel and trout hepatocytes (79.6 +/- 14.6 and 75.7 +/- 17.4 nM, respectively) but was significantly higher in bullhead cells (184 +/- 23 nM). Epinephrine-induced [Ca2+]i oscillations were observed only in eel hepatocytes. These oscillations, which presented variable patterns among individual cells, also developed in t

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14

Keast, Allen. "Growth responses of the brown bullhead (Ictalurus nebulosus) to temperature." Canadian Journal of Zoology 63, no. 6 (1985): 1510–15. http://dx.doi.org/10.1139/z85-224.

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Groups of year 0 and year 2 brown bullhead (Ictalurus nebulosus) that had concluded the summer's growth, were exposed to six different temperatures between 5 and 30 °C for 8 weeks. For both size classes, ration (grams of food per fish per day) increased with temperature. Instantaneous growth (percent body weight per day) was best at 20–30 °C. In the small size class it was higher at 30 °C than at 20–25 °C. Conversion efficiency results were highest at 10–30 °C and 15–25 °C for the small and large size classes, respectively. Relative to seasonal water temperatures in Lake Opinicon, the period o

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15

Walter, R. P., E. S. Gnyra, L. I. Söderberg, and D. D. Heath. "Rapid genetic identification of brown bullhead (Ameiurus nebulosus), black bullhead (Ameiurus melas) and their hybrids." Conservation Genetics Resources 6, no. 3 (2014): 507–9. http://dx.doi.org/10.1007/s12686-014-0161-4.

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16

Mickle, Megan F., Christopher M. Harris, Oliver P. Love, and Dennis M. Higgs. "Behavioural and morphological changes in fish exposed to ecologically relevant boat noises." Canadian Journal of Fisheries and Aquatic Sciences 76, no. 10 (2019): 1845–53. http://dx.doi.org/10.1139/cjfas-2018-0258.

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There is increasing concern about the effect of underwater noise on fish due to rising levels of anthropogenic noise. We performed experiments on the black bullhead (Ameiurus melas), a species with known hearing specializations and located within the Laurentian Great Lakes where there is considerable commercial and recreational boat traffic. We tested and compared physiology (baseline cortisol), behaviour (activity, sheltering), and morphology (ciliary bundles of hair cells) of bullhead to boat noise. At 140 dB re 1 μPa (−54.84 dB re 1 m·s−2), we saw clear behavioural effects in terms of both

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17

Bunton, Tracie E. "Brown bullhead (Ameiurus nebulosus) skin carcinogenesis." Experimental and Toxicologic Pathology 52, no. 3 (2000): 209–20. http://dx.doi.org/10.1016/s0940-2993(00)80031-7.

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18

Gosselin, M. P., G. E. Petts, and I. P. Maddock. "Mesohabitat use by bullhead (Cottus gobio)." Hydrobiologia 652, no. 1 (2010): 299–310. http://dx.doi.org/10.1007/s10750-010-0363-z.

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19

Nowosad, Damon M., and Eric B. Taylor. "Habitat variation and invasive species as factors influencing the distribution of native fishes in the lower Fraser River Valley, British Columbia, with an emphasis on brassy minnow (Hybognathus hankinsoni)." Canadian Journal of Zoology 91, no. 2 (2013): 71–81. http://dx.doi.org/10.1139/cjz-2012-0177.

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Brassy minnow (Hybognathus hankinsoni Hubbs, 1929) have disjunct distributions in western Canada, making them a species of conservation concern. We assessed changes in the distribution of invasive species as factors influencing the distribution of brassy minnow and other native species by comparing historical and current distributions in the lower Fraser River in British Columbia. We tested effects of physical habitat parameters on local distributions of brassy minnow and for evidence of negative interactions between brassy minnow and invasive brown bullhead (Ameiurus nebulosus (Lesueur, 1819)

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20

Roje, Sara, Bořek Drozd, Luise Richter, et al. "Comparison of Behavior and Space Use of the European Bullhead Cottus gobio and the Round Goby Neogobius melanostomus in a Simulated Natural Habitat." Biology 10, no. 9 (2021): 821. http://dx.doi.org/10.3390/biology10090821.

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The round goby is an invasive fish in Europe and North America that threatens native species by predation and competition. Its habitat preferences are similar to those of the European bullhead, which it displaces from shelters and out-competes for available resources. We assessed the microhabitat preferences, shelter use, and activity of the round goby and European bullhead in single-species experiments in habitat simulator systems to investigate their behavior in a novel environment. Fish were video-recorded for 28 h in the presence of shelter and feed with water velocity ranging from 0.00 to

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21

Bretschneider, Franklin, Lonneke Eeuwes, and Robert Peters. "Behavioural relevance of AC and DC in prey detection by the brown bullhead, Ameiurus nebulosus." Animal Biology 58, no. 3 (2008): 321–36. http://dx.doi.org/10.1163/157075608x344640.

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AbstractA large range of aquatic vertebrates employs passive electroreception to detect the weak bioelectric fields that surround their prey. Bioelectric fields are dynamic in strength and frequency composition, but typically consist of a direct current (DC) and an alternating current (AC) component. We examined the biological relevance of these components for prey detection behaviour in the brown bullhead by means of a preference test. We gave each fish the choice between two small dipoles emitting a DC step or AC stimulus of variable strength, respectively. We used AC stimuli that were eithe

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22

Craig, Cody A., Christopher R. Vaughn, David S. Ruppel, and Timothy H. Bonner. "Occurrence ofAmeiurus nebulosus(Brown Bullhead) in Texas." Southeastern Naturalist 14, no. 2 (2015): N35—N37. http://dx.doi.org/10.1656/058.014.0213.

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23

Slater, Tiffany S., Kate Ashbrook, and Jürgen Kriwet. "Evolutionary relationships among bullhead sharks (Chondrichthyes, Heterodontiformes)." Papers in Palaeontology 6, no. 3 (2020): 425–37. http://dx.doi.org/10.1002/spp2.1299.

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24

Rutkayová, Jitka, Roman Biskup, Radovan Harant, Vlastimil Šlechta, and Ján Koščo. "Ameiurus melas (black bullhead): morphological characteristics of new introduced species and its comparison with Ameiurus nebulosus (brown bullhead)." Reviews in Fish Biology and Fisheries 23, no. 1 (2012): 51–68. http://dx.doi.org/10.1007/s11160-012-9274-6.

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25

Pangrekar, Jyotsna, Panna L. Kole, Sangeet A. Honey, Subodh Kumar, and Harish C. Sikka. "Metabolism of phenanthrene by brown bullhead liver microsomes." Aquatic Toxicology 64, no. 4 (2003): 407–18. http://dx.doi.org/10.1016/s0166-445x(03)00075-4.

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26

Pangrekar, J. "Metabolism of Chrysene by Brown Bullhead Liver Microsomes." Toxicological Sciences 71, no. 1 (2003): 67–73. http://dx.doi.org/10.1093/toxsci/71.1.67.

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27

Hartman, Kyle J. "Bioenergetics of Brown Bullhead in a Changing Climate." Transactions of the American Fisheries Society 146, no. 4 (2017): 634–44. http://dx.doi.org/10.1080/00028487.2017.1293563.

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28

Gertler, Alan W., Douglas A. Lowenthal, and William G. Coulombe. "PM10 Source Apportionment Study in Bullhead City, Arizona." Journal of the Air & Waste Management Association 45, no. 2 (1995): 75–82. http://dx.doi.org/10.1080/10473289.1995.10467349.

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29

Sinnott, Timothy J., and Neil H. Ringler. "Population Biology of the Brown Bullhead (Ictalurus nebulosusLesueur)." Journal of Freshwater Ecology 4, no. 2 (1987): 225–34. http://dx.doi.org/10.1080/02705060.1987.9664656.

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30

Dugan, Stephen G., Xi Chen, James G. Nickerson, Colin J. Montpetit та Thomas W. Moon. "Regulation of the black bullhead hepatic β-adrenoceptors". Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology 149, № 2 (2008): 265–74. http://dx.doi.org/10.1016/j.cbpb.2007.09.016.

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31

Moon, T. W., and T. P. Mommsen. "Vasoactive peptides and phenylephrine actions in isolated teleost hepatocytes." American Journal of Physiology-Endocrinology and Metabolism 259, no. 5 (1990): E644—E649. http://dx.doi.org/10.1152/ajpendo.1990.259.5.e644.

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The metabolic actions of the vasoactive peptides vasotocin and isotocin and the alpha-agonist phenylephrine are examined in hepatocytes isolated from three teleost species: brown bullhead, rainbow trout, and American eel. These three compounds influenced hepatic gluconeogenesis and glycogenolysis with significant species differences. Vasotocin and isotocin affected only eel hepatocytes activating gluconeogenesis by 1.7-fold and glycogenolysis by 3-fold. Phenylephrine increased glycogenolysis by 7-fold in bullhead hepatocytes and gluconeogenesis by 1.4-fold in trout cells. Vasotocin and phenyle

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32

Amores, Angel, Catherine A. Wilson, Corey A. H. Allard, H. William Detrich, and John H. Postlethwait. "Cold Fusion: Massive Karyotype Evolution in the Antarctic Bullhead Notothen Notothenia coriiceps." G3 Genes|Genomes|Genetics 7, no. 7 (2017): 2195–207. http://dx.doi.org/10.1534/g3.117.040063.

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Abstract Half of all vertebrate species share a series of chromosome fusions that preceded the teleost genome duplication (TGD), but we do not understand the causative evolutionary mechanisms. The “Robertsonian-translocation hypothesis” suggests a regular fusion of each ancestral acro- or telocentric chromosome to just one other by centromere fusions, thus halving the karyotype. An alternative “genome-stirring hypothesis” posits haphazard and repeated fusions, inversions, and reciprocal and nonreciprocal translocations. To study large-scale karyotype reduction, we investigated the decrease of

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33

Goo, In Bon, Hyun Woo Gil, and In-Seok Park. "Comparative Analysis of Histological Changes in Ussurian Bullhead, Leiocassis ussuriensis, and Korean Bullhead, Pseudobagrus fulvidraco, in the Early Period of Growth." Development & Reproduciton 17, no. 4 (2013): 427–34. http://dx.doi.org/10.12717/dr.2013.17.4.427.

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34

Béres, Beatrix, Dóra Kánainé Sipos, Tamás Müller, et al. "Species-specific markers provide molecular genetic evidence for natural introgression of bullhead catfishes in Hungary." PeerJ 5 (February 28, 2017): e2804. http://dx.doi.org/10.7717/peerj.2804.

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Since three bullhead catfish species were introduced to Europe in the late 19th century, they have spread to most European countries. In Hungary, the brown bullhead (Ameiurus nebulosus) was more widespread in the 1970s–1980s, but the black bullhead (Ameiurus melas) has gradually supplanted since their second introduction in 1980. The introgressive hybridization of the two species has been presumed based on morphological examinations, but it has not previously been supported by genetic evidence. In this study, 11 different Hungarian habitats were screened with a new species-specific nuclear gen

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35

O'MAHONY, E. M., D. G. BRADLEY, C. R. KENNEDY, and C. V. HOLLAND. "Evidence for the hypothesis of strain formation inPomphorhynchus laevis(Acanthocephala): an investigation using mitochondrial DNA sequences." Parasitology 129, no. 3 (2004): 341–47. http://dx.doi.org/10.1017/s0031182004005748.

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A hypothesis has been erected stating that in the British Isles the acanthocephalan,Pomphorhynchus laeviscan be separated into 3 strains, an English, Irish and marine strain. Ecological and morphological evidence exists in support of this hypothesis. An investigation at the molecular level was conducted in order to test the validity of the existing evidence. A mitochondrial gene, subunit I of cytochrome c oxidase was partially sequenced from 3 Irish populations ofP. laevis, 1 Scottish population and 3 English populations.P. laevissequences from brown trout from Ireland, England and Scotland we

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36

Carr, Marilynn G., and John E. Carr. "Individual Recognition in the Juvenile Brown Bullhead (Ictalurus nebulosus)." Copeia 1985, no. 4 (1985): 1060. http://dx.doi.org/10.2307/1445263.

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37

Cormier, Susan M., Timothy W. Neiheisel, Daniel E. Williams, and Terrence R. Tiersch. "Natural Occurrence of Triploidy in a Wild Brown Bullhead." Transactions of the American Fisheries Society 122, no. 3 (1993): 390–92. http://dx.doi.org/10.1577/1548-8659(1993)122<0390:nootia>2.3.co;2.

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38

Valentincic, T. "Olfactory Discrimination of Amino Acids in Brown Bullhead Catfish." Chemical Senses 25, no. 1 (2000): 21–29. http://dx.doi.org/10.1093/chemse/25.1.21.

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39

Kline, Jeffrey L., and Brian M. Wood. "Food Habits and Diet Selectivity of the Brown Bullhead." Journal of Freshwater Ecology 11, no. 2 (1996): 145–51. http://dx.doi.org/10.1080/02705060.1996.9663473.

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40

Mach, Samuel, Alexandr Jegorov, and Zdeněk Šimek. "Metabolism of obeticholic acid in brown bullhead (Ameiurus nebulosus)." Environmental Science and Pollution Research 26, no. 20 (2019): 20316–24. http://dx.doi.org/10.1007/s11356-019-05398-2.

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41

Lim, Sang Gu, Hyoung Kyun Han, Jung Ha Kang, et al. "Comparative Analysis of the Morphometric Changes in Ussurian bullhead, Leiocassis ussuriensis, and Korean bullhead, Pseudobagrus fulvidraco, in the Early Period of Growth." Development & Reproduciton 17, no. 3 (2013): 257–68. http://dx.doi.org/10.12717/dr.2013.17.3.257.

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42

Murdoch, M. H., and P. DN Hebert. "Mitochondrial DNA evidence of distinct glacial refugia for brown bullhead (Ameiurus nebulosus) in the Great Lakes." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 7 (1997): 1450–60. http://dx.doi.org/10.1139/f97-053.

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Restriction fragment length polymorphisms were used to survey the mitochondrial genome of Ameiurus nebulosus for nucleotide sequence variation. Two hundred and forty-nine individuals were analyzed from 12 populations across the Great Lakes drainage and 3 populations in possible refugial drainages. Fifteen restriction endonucleases revealed 50 distinct haplotypes among these fish. Two major phylogenetic assemblages, A and B, were revealed with an average 3.22% sequence divergence. Both assemblages were themselves fragmented into two groups. Strong geographic patterning was observed in the frequ

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43

Holmen, J., E. M. Olsen, and L. A. Vøllestad. "Interspecific competition between stream-dwelling brown trout and Alpine bullhead." Journal of Fish Biology 62, no. 6 (2003): 1312–25. http://dx.doi.org/10.1046/j.1095-8649.2003.00112.x.

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44

Szebedinszky, Cheryl, and Kathleen M. Gilmour. "The buffering power of plasma in brown bullhead (Ameiurus nebulosus)." Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology 131, no. 2 (2002): 171–83. http://dx.doi.org/10.1016/s1096-4959(01)00492-4.

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45

Kobler, Alexander, Yves Humblet, Guy Knaepkens, Brecht Engelen, and Marcel Eens. "Diel movement of bullhead (Cottus perifretum) in a lowland stream." Ecology of Freshwater Fish 21, no. 3 (2012): 453–60. http://dx.doi.org/10.1111/j.1600-0633.2012.00564.x.

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46

Quaglio, F., V. Zappulli, L. Poppi, P. Capovilla, F. Capparucci, and F. Marino. "Squamous cell carcinoma in a wild European bullhead Cottus gobio." Diseases of Aquatic Organisms 122, no. 1 (2016): 73–76. http://dx.doi.org/10.3354/dao03065.

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Vezza, Paolo, P. Parasiewicz, O. Calles, M. Spairani, and C. Comoglio. "Modelling habitat requirements of bullhead (Cottus gobio) in Alpine streams." Aquatic Sciences 76, no. 1 (2013): 1–15. http://dx.doi.org/10.1007/s00027-013-0306-7.

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Breckels, Ross D., and Bryan D. Neff. "Pollution-induced behavioural effects in the brown bullhead (Ameiurus nebulosus)." Ecotoxicology 19, no. 7 (2010): 1337–46. http://dx.doi.org/10.1007/s10646-010-0520-1.

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Fenton, Cassandra R., and Jon D. Pelletier. "Cosmogenic 3He age estimates of Plio-Pleistocene alluvial-fan surfaces in the Lower Colorado River Corridor, Arizona, USA." Quaternary Research 79, no. 1 (2013): 86–99. http://dx.doi.org/10.1016/j.yqres.2012.10.006.

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AbstractPlio-Pleistocene deposits of the Lower Colorado River (LCR) and tributary alluvial fans emanating from the Black Mountains near Golden Shores, Arizona record six cycles of Late Cenozoic aggradation and incision of the LCR and its adjacent alluvial fans. Cosmogenic 3He (3Hec) ages of basalt boulders on fan terraces yield age ranges of: 3.3–2.2 Ma, 2.2–1.1 Ma, 1.1 Ma to 110 ka, < 350 ka, < 150 ka, and < 63 ka. T1 and Q1 fans are especially significant, because they overlie Bullhead Alluvium, i.e. the first alluvial deposit of the LCR since its inception ca. 4.2 Ma. 3Hec data sug

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Ward, David L., and Ben M. Vaage. "What Environmental Conditions Reduce Predation Vulnerability for Juvenile Colorado River Native Fishes?" Journal of Fish and Wildlife Management 10, no. 1 (2018): 196–205. http://dx.doi.org/10.3996/042018-jfwm-031.

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Abstract The incompatibility of native Colorado River fishes and nonnative warm-water sport fishes is well documented, with predation by nonnative species causing rapid declines and even extirpation of native species in most locations. In a few rare instances, native fishes can survive and recruit despite the presence of nonnative warm-water predators, indicating that specific environmental conditions may help reduce predation vulnerability. We experimented with turbidity, artificial blue water colorant (artificial turbidity pond treatment), woody debris, rocks, and aquatic vegetation in a lab

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