Citations with the tag: GADUS

Results 1 - 45

• Reproductive potential of the eastern baltic cod Gadus morhua callarias L. population.
  Dmitrieva, M. A.; Karpushevsky, I. V. // Russian Journal of Developmental Biology; May2011, Vol. 42 Issue 3, p153 

  Trends in interannual variation in maturation and spawning terms of various age cohorts in the Eastern Baltic cod population in 1997-2009 were studied. Specific features in the age structure of the mature population part that were established by the end of the first decade of the 21st century...

• Reconciling overfishing and climate change with stock dynamics of Atlantic cod (Gadus morhua) over 500 years.
  Rose, G. A. // Canadian Journal of Fisheries & Aquatic Sciences; Sep2004, Vol. 61 Issue 9, p1553 

  To examine overfishing and climate effects on depleted cod (Gadus morhua) stocks, a surplus production model based on reconstructions of cod catch in Newfoundland was used to describe biomass dynamics from 1505 to 2004. Productivity parameters r (population growth rate) and K (carrying capacity)...

• The population dynamics of Northeast Arctic cod (Gadus morhua) through two decades: an analysis based on survey data.
  Hjermann, Dag �; Stenseth, Nils Chr; Ottersen, Geir // Canadian Journal of Fisheries & Aquatic Sciences; Sep2004, Vol. 61 Issue 9, p1747 

  We analyse the population dynamics of Northeast Arctic cod (Gadus morhua) by applying statistical population models to 22 years of research survey data on abundance, length, and maturation. The models for abundance and individual length are selected using Akaike's information criterion (AICC)....

• Weight-based virtual population analysis of Pacific codGadus macrocephalusoff the Pacific coast of southern Hokkaido, Japan.
  Ueda, Yuji; Kanno, Yasuji; Matsuishi, Takashi // Fisheries Science; Oct2004, Vol. 70 Issue 5, p829 

  Age-based population assessment is widely used, but there are cases where information on age or even body length of landed fish is difficult to collect. In the present study, the biomass and fishing mortality of the southern Hokkaido stock of Pacific codGadus macrocephaluswas estimated directly...

• Young Katrina Relief Volunteer Honored.
  Gadus, Joe // QST; Feb2006, Vol. 90 Issue 2, p20 

  The article reports that American Radio Relay League member Joseph Gadus was honored by Harris County, Texas, for his efforts in the Katrina relief effort. County Judge Robert Eckels issued a proclamation declaring November 30 as Joseph Gadus III Day.

• Stable Isotopic and Trace Elemental Compositions of Otoliths and the Stock Structure of Pacific Cod, Gadus macrocephalus.
  Yongwen Gao; Bargmann, Greg G.; Brand, Uwe; Noakes, David L. G. // Environmental Biology of Fishes; Nov2005, Vol. 74 Issue 3/4, p335 

  We examined the stock composition and life history of Pacific cod, Gadus macrocephalus, in the northeast Pacific Ocean from sagittal otoliths collected from three marine fishing areas in Washington State, U.S.A. We analyzed both stable isotope ratios (d18O and d13C) and trace elemental...

• Assessing changes in age and size at maturation in collapsing populations of Atlantic cod (Gadus morhua).
  Olsen, Esben Moland; Lilly, George R.; Heino, Mikko; Morgan, M. Joanne; Brattey, John; Dieckmann, Ulf // Canadian Journal of Fisheries & Aquatic Sciences; Apr2005, Vol. 62 Issue 4, p811 

  By estimating probabilistic reaction norms for age and size at maturation, we show that maturation schedules of Atlantic cod (Gadus morhua) off Labrador and Newfoundland shifted toward earlier ages and smaller sizes during the late 1980s and early 1990s, when these populations underwent a severe...

• Acoustic monitoring of Atlantic cod (Gadus morhua) in Massachusetts Bay: implications for management and conservation.
  Hernandez, Keith M.; Risch, Denise; Cholewiak, Danielle M.; Dean, Micah J.; Hatch, Leila T.; Hoffman, William S.; Rice, Aaron N.; Zemeckis, Douglas; Van Parijs, Sofie M. // ICES Journal of Marine Science / Journal du Conseil; Apr2013, Vol. 70 Issue 3, p628 

  Hernandez, K. M., Risch, D., Cholewiak, D. M., Dean, M. J., Hatch, L. T., Hoffman, W. S., Rice, A. N., Zemeckis, D., and Van Parijs, S. M. 2013. Acoustic monitoring of Atlantic cod (Gadus morhua) in Massachusetts Bay: implications for management and conservation. – ICES Journal of Marine...

• Small-scale temporal and spatial variation in Atlantic cod (Gadus morhua) life history.
  McIntyre, Tara M; Hutchings, Jeffrey A // Canadian Journal of Fisheries & Aquatic Sciences; Sep2003, Vol. 60 Issue 9, p1111 

  Life histories of Atlantic cod (Gadus morhua) from the Gulf of St. Lawrence south to Georges Bank differ significantly through time and space. Within the Southern Gulf, fecundity per unit body mass differed by more than 40% over short (2 years) and long (42�45 years) periods of time....

• Atlantic cod (Gadus morhua) distribution response to environmental variability in the northern Gulf of St. Lawrence.
  Ruppert, Jonathan L. W.; Fortin, Marie-Jos�e; Rose, George A.; Devillers, Rodolphe // Canadian Journal of Fisheries & Aquatic Sciences; Jun2009, Vol. 66 Issue 6, p909 

  Atlantic cod (Gadus morhua) distribution patterns and the behavioral (site fidelity), biotic (prey and predators), and environmental factors that determine them are fundamental to cod�s historic importance as a commercial species in the North Atlantic. Using classification and regression tree...

• The function of sound production by Atlantic cod as inferred from patterns of variation in drumming muscle mass.
  Rowe, Sherrylynn; Hutchings, Jeffrey A. // Canadian Journal of Zoology; Sep2004, Vol. 82 Issue 9, p1391 

  We quantified variation in the mass of drumming muscles (the sound-producing musculature) among individual Atlantic cod (Gadus morhua L.. 1758) for comparison with other evidence on the role of sexual selection in the evolution of sound production by this species. Based on 913 cod sampled from...

• Reflex impairment as a measure of vitality and survival potential of Atlantic cod (Gadus morhua).
  Humborstad, Odd-B�rre; Davis, Michael W.; L�kkeborg, Svein // Fishery Bulletin; Jul2009, Vol. 107 Issue 3, p395 

  Assuring the vitality and survival potential of live-caught Atlantic cod (Gadus morhua) is important for improving the sorting of fish before net penning operations designed to hold fish for growth and later market. When Atlantic cod are captured by Danish seine, the most commonly used fishing...

• Microsampling of fish otoliths: a comparison between DM 2800 and Dremel in stable isotope analysis.
  Yongwen Gao // Environmental Biology of Fishes; Aug1999, Vol. 55 Issue 4, p443 

  This paper describes and compares two microsampling methods, DM 2800 and Dremel, which were used in taking aragonite samples from otolith zones of cod, Gadus morhua, for stable isotope analysis. There were no significant differences between the two sampling methods both in carbon and oxygen...

• Depensation, probability of fertilization, and the mating system of Atlantic cod (Gadus morhua L.).
  Rowe, Sherrylynn; Hutchings, Jeffrey A.; Bekkevold, Dorte; Rakitin, Ana // ICES Journal of Marine Science / Journal du Conseil; Oct2004, Vol. 61 Issue 7, p1144 

  Atlantic cod (Gadus morhua L.) have been severely overexploited and are currently at historic population lows, having declined 90% in the North Sea and 99% off northeast Newfoundland in recent decades. Slow rates of recovery and continuing declines may be attributable to depensation, defined as...

• Long-term variability of growth and recruitment of cod (Gadus morhua) off Greenland
  R�tz, Hans-Joachim; Lloret, Josep // ICES Journal of Marine Science / Journal du Conseil; Oct2005, Vol. 62 Issue 7, p1310 

  Growth variation was estimated from mean lengths-at-ages 4 and 5 for Atlantic cod off Greenland based on 52,973 fish taken from commercial and scientific catches from 1955 to 2002. Mean length-at-age values were corrected for area and seasonal effects, and significant growth reductions occurred...

• Using geostatistics to quantify seasonal distribution and aggregation patterns of fishes: an example of Atlantic cod (Gadus morhua).
  Mello, L. G. S.; Rose, G. A. // Canadian Journal of Fisheries & Aquatic Sciences; Mar2005, Vol. 62 Issue 3, p659 

  Geostatistical methods were used to (i) quantify fish aggregation patterns over a range of scales (100 m to 67 km) using both simulated and acoustic density data of Atlantic cod (Gadus morhua) and (ii) examine how changes in aggregation patterns influenced the precision of geostatistical density...

• Delineating stocks of Atlantic cod (Gadus morhua) in the Gulf of St Lawrence and Cabot Strait areas using vertebral number.
  Swain, D. P.; Frank, K. T.; Maillet, G. // ICES Journal of Marine Science / Journal du Conseil; Feb2001, Vol. 58 Issue 1, p253 

  Cod (Gadus morhua) from several populations overwinter in the Cabot Strait area at the entrance to the Gulf of St Lawrence. We examined the utility of vertebral number for estimating the stock composition of cod aggregations in this overwintering area. Stock-specific mean vertebral numbers were...

• Optimal selection of temperature areas by juvenile cod (Gadus morhua L.) in the Barents Sea modelled by dynamic optimisation.
  Kristiansen, Tore S.; Michalsen, Kathrine; Jacobsen, Jan Arge; Huse, Irene // ICES Journal of Marine Science / Journal du Conseil; Feb2001, Vol. 58 Issue 1, p172 

  The trade-off between growth rate in areas with different temperatures and predation rates was modelled for juvenile cod living in the Barents Sea by a dynamic optimisation model. The choice of optimal temperature area of a juvenile (1-group) cod growing from a start weight (50 g, 15 cm) to a...

• Genetic differentiation among Atlantic cod (Gadus morhua L.) in Icelandic waters: temporal stability.
  J�nsd�ttir, �. D. B.; Dan�elsd�ttir, A. K.; N�dal, G. // ICES Journal of Marine Science / Journal du Conseil; Feb2001, Vol. 58 Issue 1, p114 

  Temporal variability in genetic structure of Atlantic cod was investigated at two locations (Loftsta�ahraun and Kantur) on the main cod spawning grounds off south Iceland using synaptophysin (Syp I) and haemoglobin as genetic markers. During the spawning season (late March and early April) cod...

• Energy losses due to routine and feeding metabolism in young-of-the-year juvenile Atlantic cod (Gadus morhua).
  Buckley, Lawrence J; Peck, Myron A; Bengtson, David A // Canadian Journal of Fisheries & Aquatic Sciences; Aug2003, Vol. 60 Issue 8, p929 

  We examined the effects of body size (3�13 cm total length) and temperature (4.5, 8.0, 12.0, and 15.5 �C) on routine (RR) and feeding (RSDA) energy losses by laboratory-reared, young-of-year juvenile Atlantic cod (Gadus morhua). The magnitude of the effect of temperature on RR, expressed via...

• Target-strength studies on Atlantic cod (Gadus morhua) in Newfoundland waters.
  Rose, G. A.; Porter, D. R. // ICES Journal of Marine Science / Journal du Conseil; Apr1996, Vol. 53 Issue 2, p259 

  Acoustic target strengths (TS) of Atlantic cod (Gadus morhuaL.) of lengths 12�65 cm were measured ex situ at 38 and 120 kHz (dual beam) under continuous video monitoring. Each fish swam within an acoustically inert monofilament mesh bag secured 10 m beneath fixed location transducers. Overall...

• Cod egg characteristics and viability in relation to low temperature and maternal nutritional condition.
  Ouellet, Patrick; Lambert, Yvan; B�rub�, Isabelle // ICES Journal of Marine Science / Journal du Conseil; Jun2001, Vol. 58 Issue 3, p672 

  In 1995 and 1996, groups of female cod (Gadus morhua) of varying nutritional condition and maturing at different temperatures were used to investigate relationships between female condition, egg production, egg characteristics, and viability. Over the two years, egg samples from every batch...

• Use of substratum ripples for flow refuging by Atlantic cod, Gadus morhua.
  Gerstner, Cynthia L. // Environmental Biology of Fishes; Apr1998, Vol. 51 Issue 4, p455 

  The ability to maintain position in a current without actively swimming (station-holding) was measured on substratum ripples for Atlantic cod, Gadus morhua, a bentho-pelagic fusiform species. The current velocities tested ranged from 0-111 cm sec-1. Ripples were sinusoidal, with twelve...

• Egg buoyancy variability in local populations of Atlantic cod ( Gadus morhua).
  Jung, Kyung-Mi; Folkvord, Arild; Kjesbu, Olav; Agnalt, Ann; Thorsen, Anders; Sundby, Svein // Marine Biology; Sep2012, Vol. 159 Issue 9, p1969 

  Previous studies have found strong evidences for Atlantic cod ( Gadus morhua) egg retention in fjords, which are caused by the combination of vertical salinity structure, estuarine circulation, and egg specific gravity, supporting small-scaled geographical differentiations of local populations....

• Intrastock differences in maturation schedules of Atlantic cod, Gadus morhua.
  Wright, Peter J.; Millar, Colin P.; Gibb, Fiona M. // ICES Journal of Marine Science / Journal du Conseil; Sep2011, Vol. 68 Issue 9, p1918 

  Wright, P. J., Millar, C. P., and Gibb, F. M. 2011. Intrastock differences in maturation schedules of Atlantic cod, Gadus morhua. � ICES Journal of Marine Science, 68: 1918�1927.Differences in maturation schedules from three subpopulations of North Sea cod (Gadus morhua) were examined using...

• Estimating catch-at-age by combining data from different sources.
  Hirst, David; Storvik, Geir; Aldrin, Magne; Aanes, Sondre; Huseby, Ragnar Bang // Canadian Journal of Fisheries & Aquatic Sciences; Jun2005, Vol. 62 Issue 6, p1377 

  Estimating the catch-at-age of commercial fish species is an important part of the quota-setting process for many different species and almost all countries with a fishing fleet. Current procedures are usually very time-consuming and somewhat ad hoc, and the estimates have no measure of...

• Distributional patterns of 0-group Pacific cod (Gadus macrocephalus) in the eastern Bering Sea under variable recruitment and thermal conditions.
  Hurst, Thomas P.; Moss, Jamal H.; Miller, Jessica A. // ICES Journal of Marine Science / Journal du Conseil; Mar2012, Vol. 69 Issue 2, p163 

  Hurst, T. P., Moss, J. H., and Miller, J. A. 2012. Distributional patterns of 0-group Pacific cod (Gadus macrocephalus) in the eastern Bering Sea under variable recruitment and thermal conditions. – ICES Journal of Marine Science, 69: 163–174.Despite the importance of Pacific cod in Bering...

• Recruitment Variability in North Atlantic Cod and Match-Mismatch Dynamics.
  Kristiansen, Trond; Drinkwater, Kenneth F.; Lough, R. Gregory; Sundby, Svein // PLoS ONE; 2011, Vol. 6 Issue 3, p1 

  Background: Fisheries exploitation, habitat destruction, and climate are important drivers of variability in recruitment success. Understanding variability in recruitment can reveal mechanisms behind widespread decline in the abundance of key species in marine and terrestrial ecosystems. For...

• Dzeguzite gadus skaita.
  Silenieks, Juris // World Literature Today; Winter89, Vol. 63 Issue 1, p143 

  Reviews the book "Dzeguzite gadus skaita," by Ilze Indrane.

• Can Atlantic cod (Gadus morhua) recover? Exploring trophic explanations for the non-recovery of the cod stock on the eastern Scotian Shelf, Canada.
  Bundy, Alida; Fanning, L. Paul // Canadian Journal of Fisheries & Aquatic Sciences; Jul2005, Vol. 62 Issue 7, p1474 

  The Atlantic cod (Gadus morhua) stock on the eastern Scotian Shelf collapsed in 1993. Over a decade later, in spite of a fisheries moratorium on cod fishing, this stock is at an all-time low. In parallel with the collapse of the cod stock, the abundance of large cod prey, including forage fish,...

• Structure and functioning of the eastern Scotian Shelf ecosystem before and after the collapse of groundfish stocks in the early 1990s.
  Bundy, Alida // Canadian Journal of Fisheries & Aquatic Sciences; Jul2005, Vol. 62 Issue 7, p1453 

  The fishery-induced collapse of the Atlantic cod (Gadus morhua) stock on the eastern Scotian Shelf has altered the species composition of this ecosystem. Ecopath mass-balance models of the ecosystem before and after the collapse were developed to explore how the structure, function, and key...

• Lipid class and nonesterified fatty acid profiles in plasma of North Atlantic cod (Gadus morhua).
  Alkanani, T.; Parrish, C. C.; Rodnick, K. J.; Gamperl, A. K. // Canadian Journal of Fisheries & Aquatic Sciences; Nov2005, Vol. 62 Issue 11, p2509 

  Metabolic energy status is a critical metric for the evaluation of fish condition and health. Thus, we (i) conducted comprehensive and comparative measurements of nonesterified fatty acids (NEFAs) and other plasma lipids in fed and food-deprived (10 weeks) Atlantic cod (Gadus morhua) and (ii)...

• Using the particle filter to geolocate Atlantic cod (Gadus morhua) in the Baltic Sea, with special emphasis on determining uncertainty.
  Andersen, K H; Nielsen, A; Thygesen, U H; Hinrichsen, H -H; Neuenfeldt, S // Canadian Journal of Fisheries & Aquatic Sciences; Apr2007, Vol. 64 Issue 4, p618 

  The use of archival tags on fish gives information of individual behaviour with an unprecedented high resolution in time. A central problem in the analysis of data from retrieved tags is the geolocation, namely the infererence of movements of the fish by comparing the data from the tags with...

• Tail beat frequency as a predictor of swimming speed and oxygen consumption of saithe ( Pollachius virens) and whiting ( Merlangius merlangus) during forced swimming.
  Steinhausen, Maria; Steffensen, John; Andersen, Niels // Marine Biology; Nov2005, Vol. 148 Issue 1, p197 

  Oxygen consumption and tail beat frequency were measured on saithe ( Pollachius virens) and whiting ( Merlangius merlangus) during steady swimming. Oxygen consumption increased exponentially with swimming speed, and the relationship was described by a power function. The extrapolated standard...

• Residency and depth movements of a coastal group of Atlantic cod ( Gadus morhua L.).
  Neat, Francis; Wright, Peter; Zuur, Alain; Gibb, Iain; Gibb, Fiona; Tulett, David; Righton, David; Turner, Robert // Marine Biology; Jan2006, Vol. 148 Issue 3, p643 

  Atlantic cod stocks are subdivided into geographically and biologically discrete populations; some being locally resident, others migratory. The reasons for the variation in migration pattern and the consequences it may have for population structuring is poorly understood. We studied a group of...

• Hierarchical modelling of temperature and habitat size effects on population dynamics of North Atlantic cod.
  Mantzouni, Irene; S�rensen, Helle; O'Hara, Robert B.; MacKenzie, Brian R. // ICES Journal of Marine Science / Journal du Conseil; Jul2010, Vol. 67 Issue 5, p833 

  Mantzouni, I., S�rensen, H., O'Hara, R. B., and MacKenzie, B. R. 2010. Hierarchical modelling of temperature and habitat size effects on population dynamics of North Atlantic cod. � ICES Journal of Marine Science, 67: 833�855.Understanding how temperature affects cod (Gadus morhua) ecology...

• Influence of environment and fleet dynamics on catch rates of eastern Scotian Shelf cod through the early 1980s.
  Gillis, D. M.; Frank, K. T. // ICES Journal of Marine Science / Journal du Conseil; Feb2001, Vol. 58 Issue 1, p61 

  An analysis of the Atlantic cod (Gadus morhua) fishery on the eastern Scotian Shelf indicates that environmentally induced fluctuations in fish abundance or availability can influence catch rates beyond the immediate area of their impact through fleet dynamics. Each autumn, cod leave the Gulf of...

• Genetic differentiation among Atlantic cod (Gadus morhua) from Browns Bank, Georges Bank, and Nantucket Shoals.
  Lage, Christopher; Kuhn, Kristen; Kornfield, Irv // Fishery Bulletin; Apr2004, Vol. 102 Issue 2, p289 

  This study examines genetic variation at five microsatellite loci and at the vesicle membrane protein locus, pantophysin, of Atlantic cod (Gadus morhua) from Browns Bank, Georges Bank, and Nantucket Shoals. The Nantucket Shoals sample represents the first time cod south of Georges Bank have been...

• strong voices.
  Roberts, Lori D. // Indianapolis Monthly; Oct2007, Vol. 30 Issue 16, p154 

  The article presents the views of three breast cancer patients from Indiana, regarding the diagnosis and treatment of the disease. Mary Beth Gadus has been diagnosed twice with cancer. She comments that the cancer experience has strengthened her relationship with her husband. Gina Hendershot had...

• Characterization of an Atlantic cod (Gadus morhua) embryonic stem cell cDNA library.
  Olsvik, P�l A.; Holen, Elisabeth // BMC Research Notes; 2009, Vol. 2, p1 

  Background: The Atlantic cod is an ecologically and economically important North Atlantic fish species and also an emerging aquaculture species. To study gene expression in Atlantic cod embryonic stem (ES) cells, our goal was to generate and analyze expressed sequence tags (ESTs) from an ES cell...

• Relation of growth and condition with the Pan I locus in Atlantic cod ( Gadus morhua L.) around Iceland.
  J�nsd�ttir, Ingibj�rg; Marteinsd�ttir, Gu�r�n; Pampoulie, Christophe // Marine Biology; Jul2008, Vol. 154 Issue 5, p867 

  Growth and condition (both somatic and hepatosomatic index) of Atlantic cod spawning at different locations around Iceland was studied in relation to the Pan I locus. South of Iceland cod carrying the Pan IAB and Pan IBB genotypes were more frequent while cod carrying the Pan IAA genotype was...

• Weight-based yield per recruitment and spawning-biomass per recruitment analyses of Pacific cod Gadus macrocephalus off the Pacific coast of southern Hokkaido, Japan.
  UEDA, Yuji; MATSUISHI, Takashi // Fisheries Science; Aug2005, Vol. 71 Issue 4, p799 

  The present study assessed the stock state of Pacific cod Gadus macrocephalus caught off the coast of southern Hokkaido, Japan. Weight-based yield per recruitment (YPR) and spawning-biomass per recruitment (SPR) analyses were used for this assessment. The current fishing mortality (average from...

• Integrating the markers Pan I and haemoglobin with the genetic linkage map of Atlantic cod (Gadus morhua).
  Borza, Tudor; Higgins, Brent; Simpson, Gary; Bowman, Sharen // BMC Research Notes; 2010, Vol. 3, p261 

  Background: Haemoglobin (Hb) and pantophysin (Pan I) markers have been used intensively in population studies of Atlantic cod (Gadus morhua) and in the analysis of traits such as temperature tolerance, growth characteristics and sexual maturation. We used an Illumina GoldenGate panel and the...

• Modelling the distribution of fish accounting for spatial correlation and overdispersion.
  Lewy, Peter; Kristensen, Kasper // Canadian Journal of Fisheries & Aquatic Sciences; Oct2009, Vol. 66 Issue 10, p1809 

  The spatial distribution of cod (Gadus morhua) in the North Sea and the Skagerrak was analysed over a 24-year period using the Log Gaussian Cox Process (LGCP). In contrast to other spatial models of the distribution of fish, LGCP avoids problems with zero observations and includes the spatial...

• Intense Habitat-Specific Fisheries-Induced Selection at the Molecular Pan I Locus Predicts Imminent Collapse of a Major Cod Fishery.
  Árnason, Einar; Hernandez, Ubaldo Benitez; Kristinsson, Kristján // PLoS ONE; 2009, Vol. 4 Issue 5, p1 

  Predation is a powerful agent in the ecology and evolution of predator and prey. Prey may select multiple habitats whereby different genotypes prefer different habitats. If the predator is also habitat-specific the prey may evolve different habitat occupancy. Drastic changes can occur in the...