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You searched for: Journal name Canadian journal of fisheries and aquatic sciences Remove constraint Journal name: Canadian journal of fisheries and aquatic sciences Publication year rev 7984-2016 Remove constraint Publication year rev: 7984-2016 Source 2016 v.74 no.6 Remove constraint Source: 2016 v.74 no.6
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1. Effects of multispecies and density-dependent factors on MSY reference points: example of the Baltic Sea sprat

Author:
Jan Horbowy; Anna Luzeńczyk
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 864-870
ISSN:
1205-7533
Subject:
Gadus morhua; Sprattus sprattus; biomass; models; mortality; predation; Baltic Sea
Abstract:
... In this paper, maximum sustainable yield (MSY) parameters for the Baltic Sea sprat (Sprattus sprattus) are estimated in relation to pressure from cod (Gadus morhua) predation and the influence of density dependence on sprat growth. This study is based on long-term deterministic and stochastic simulations in which sprat density-dependent growth and predation mortality are considered. The resultant ...
DOI:
10.1139/cjfas-2016-0220

2. Estimation of occupancy, density, and abundance of larval lampreys in tributary river mouths upstream of dams on the Columbia River, Washington and Oregon

Author:
Julianne E. Harris; Jeffrey C. Jolley
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 843-852
ISSN:
1205-7533
Subject:
Entosphenus tridentatus; Lampetra; larvae; models; population growth; probability; rearing; Columbia River; Oregon; Washington (state)
Abstract:
... We estimated occupancy, density, and abundance of larval Pacific lamprey (Entosphenus tridentatus) and Lampetra spp. in tributary river mouths to impounded portions of the Columbia River, Washington and Oregon, using count data from deepwater electrofishing. Count data were analyzed by Bayesian methods using zero-inflated N-mixture models modified to include our experimentally derived estimate of ...
DOI:
10.1139/cjfas-2016-0212

3. Flow and water temperature affect reproduction and recruitment of a Great Plains cyprinid

Author:
Matthew R. Haworth; Kevin R. Bestgen
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 853-863
ISSN:
1205-7533
Subject:
Cyprinidae; base flow; environmental factors; fish; habitat destruction; indigenous species; juveniles; larvae; reproduction; spawning; species recruitment; streams; summer; water temperature; Colorado; Great Plains region
Abstract:
... Conservation of stream fishes requires an understanding of how their reproduction and recruitment are affected by environmental conditions. Flow regulation and habitat loss in North American Great Plains streams threaten many native fishes, including pelagic-broadcast spawning cyprinids. Pelagic-broadcast spawning by flathead chub (Platygobio gracilis), a species declining throughout much of its e ...
DOI:
10.1139/cjfas-2016-0238

4. Harbour seals target juvenile salmon of conservation concern

Author:
Austen C. Thomas; Benjamin W. Nelson; Monique M. Lance; Bruce E. Deagle; Andrew W. Trites
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 907-921
ISSN:
1205-7533
Subject:
DNA barcoding; Oncorhynchus gorbuscha; Oncorhynchus keta; Oncorhynchus kisutch; Oncorhynchus nerka; Oncorhynchus tshawytscha; Phoca vitulina; adults; autumn; diet; feces; juveniles; predation; predators; salmon; seals; spring; British Columbia
Abstract:
... Knowing the species and life stages of prey that predators consume is important for understanding the impacts that predation may have on prey populations, but traditional methods for determining diets often cannot provide sufficient detail. We combined data from two methods of scat analysis (DNA metabarcoding and morphological prey ID) to quantify the species and life stages of salmon (Oncorhynchu ...
DOI:
10.1139/cjfas-2015-0558

5. Modelling the impact of poaching on metapopulation viability for data-limited species

Author:
Abbey E. Camaclang; Janelle M.R. Curtis; Ilona Naujokaitis-Lewis; Mark S. Poesch; Marten A. Koops
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 894-906
ISSN:
1205-7533
Subject:
Haliotis kamtschatkana; abalone; extinction; mortality; prediction; simulation models; viability; British Columbia
Abstract:
... We developed a spatially explicit simulation model of poaching behaviour to quantify the relative influence of the intensity, frequency, and spatial distribution of poaching on metapopulation viability. We integrated our model of poaching with a stochastic, habitat-based, spatially explicit population model, applied it to examine the impact of poaching on northern abalone (Haliotis kamtschatkana) ...
DOI:
10.1139/cjfas-2015-0508

6. Quantifying predation on Baltic cod early life stages

Author:
Viola Neumann; Matthias Schaber; Margit Eero; Uwe Böttcher; Friedrich W. Köster
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 833-842
ISSN:
1205-7533
Subject:
Clupea harengus; Gadus morhua; Sprattus sprattus; basins; developmental stages; egg production; eggs; herring; predation; predators; reproductive success; spawning; stocking rate; Baltic Sea; Denmark
Abstract:
... Predation on cod (Gadus morhua) eggs by sprat (Sprattus sprattus) and herring (Clupea harengus) is known to be one of the processes influencing reproductive success of the eastern Baltic cod and has been reported to have contributed to lack of recovery of the stock in the 1990s. This study quantifies the predation on cod eggs in the Bornholm Basin, the major spawning area of cod in the central Bal ...
DOI:
10.1139/cjfas-2016-0215

7. Temporal variability of larval drift of tropical amphidromous gobies along a watershed in Réunion Island1

Author:
Raphaël Lagarde; Nils Teichert; Henri Grondin; Hélène Magalon; Agathe Pirog; Dominique Ponton
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 948-957
ISSN:
1205-7533
Subject:
Lagocephalus; Sicyopterus lagocephalus; adults; freshwater; genetic analysis; hatching; islands; larvae; linear models; phenology; plankton; population dynamics; rivers; summer; temporal variation; watersheds; Reunion
Abstract:
... Freshwater gobies of tropical islands are amphidromous: adults reproduce in rivers and larvae passively drift down to the sea immediately after hatching. Describing the phenology of this larval drift is essential to understanding the population dynamics of amphidromous gobies and to developing ecologically based recommendations for managing the watersheds. The larval drift patterns of two amphidro ...
DOI:
10.1139/cjfas-2016-0101

8. Climate change alters the quantity and phenology of habitat for lake trout (Salvelinus namaycush) in small Boreal Shield lakes

Author:
Matthew M. Guzzo; Paul J. Blanchfield
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 871-884
ISSN:
1205-7533
Subject:
Salvelinus namaycush; air temperature; autumn; climate change; habitats; ice; lakes; littoral zone; monitoring; phenology; spawning; summer; thermal stress; water temperature; winter
Abstract:
... We analyzed monitoring data (1970–2013) from small Boreal Shield lakes to understand how variations in air temperature and precipitation affect the phenology and amount of habitat for lake trout (Salvelinus namaycush). Annual air temperatures increased by ∼2 °C (significant in fall and winter). In response, ice cover was reduced by ∼19 days. Despite earlier ice-offs, springs became longer, allowin ...
DOI:
10.1139/cjfas-2016-0190

9. Dynamics of growth-based survival mechanisms in Japanese anchovy (Engraulis japonicus) larvae

Author:
Akinori Takasuka; Ayumu Sakai; Ichiro Aoki
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 812-823
ISSN:
1205-7533
Subject:
Engraulis japonicus; anchovies; larvae; metamorphosis; microstructure; mortality; otoliths; predation
Abstract:
... Three growth-based survival mechanisms were tested for multiple cohorts of Japanese anchovy (Engraulis japonicus) larvae in Sagami Bay. Through otolith microstructure analysis, growth trajectories and histories of samples of the survivors were compared with those of the original populations to examine size- and growth-selective mortality to test the “bigger is better” and “growth-selective predati ...
DOI:
10.1139/cjfas-2016-0120

10. Evaluation of harvest strategies for pelagic sharks taking ecological characteristics into consideration: an example for North Pacific blue shark

Author:
Mikihiko Kai; Hiroki Yokoi
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 933-947
ISSN:
1205-7533
Subject:
Prionace glauca; biomass; dynamic models; longline fisheries; males; mating behavior; mortality; ontogeny; population dynamics; sharks; spermatozoa; uncertainty
Abstract:
... We have developed a population dynamics model that considers the spatial segregation by sex and ontogenetic stages of pelagic sharks. The model was used to evaluate the performance of harvest strategies based on ecological characteristics. We proposed five harvest strategies for longline fisheries based on the ecological characteristics of blue shark (Prionace glauca) in the North Pacific. Managem ...
DOI:
10.1139/cjfas-2016-0170

11. Linking LiDAR with streamwater biogeochemistry in coastal temperate rainforest watersheds

Author:
Jason B. Fellman; Brian Buma; Eran Hood; Richard T. Edwards; David V. D’Amore
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 801-811
ISSN:
1205-7533
Subject:
aboveground biomass; absorbance; bioavailability; biogeochemistry; cations; dissolved organic matter; forested watersheds; freshwater; land management; lidar; prediction; rain forests; regression analysis; streams; topography; ultraviolet radiation
Abstract:
... The goal of this study was to use watershed characteristics derived from light detection and ranging (LiDAR) data to predict stream biogeochemistry in Perhumid Coastal Temperate Rainforest (PCTR) watersheds. Over a 2-day period, we sampled 37 streams for concentrations of dissolved C, N, P, major cations, and measures of dissolved organic matter quality (specific ultraviolet absorbance, SUVA₂₅₄) a ...
DOI:
10.1139/cjfas-2016-0130

12. The North American invasive zooplanktivore Bythotrephes longimanus is less hypoxia-tolerant than the native Leptodora kindtii

Author:
Michael L. Sorensen; Donn K. Branstrator
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 824-832
ISSN:
1205-7533
Subject:
Bythotrephes longimanus; Leptodora kindtii; climate change; confidence interval; dissolved oxygen; eutrophication; food webs; hypoxia; lakes; lethal concentration 50; North America
Abstract:
... The predatory cladoceran Bythotrephes longimanus (spiny water flea) has been invading lakes and damaging food webs across the central part of North America since the early 1980s. To understand its niche and that of the taxonomically related and native predatory cladoceran Leptodora kindtii, we investigated species survival after 12 h exposures to low dissolved oxygen (DO) concentrations in the lab ...
DOI:
10.1139/cjfas-2016-0188

13. The ecology of oceanic dispersal and survival of anguillid leptocephali1

Author:
Michael J. Miller; Katsumi Tsukamoto
Source:
Canadian journal of fisheries and aquatic sciences 2016 v.74 no.6 pp. 958-971
ISSN:
1205-7533
Subject:
Bacillariophyceae; Cyanobacteria; adults; anthropogenic activities; eel; eggs; energy; habitats; hatching; juveniles; leptocephalus larvae; marine sediments; metamorphosis; phytoplankton; predation; spawning; swimming; sympatry
Abstract:
... Recruitment declines of anguillid eels are difficult to understand because both anthropogenic impacts on juveniles and adults and oceanic changes affecting larval survival or dispersal may be contributing. Anguillid larvae may passively disperse widely from offshore spawning areas but late-stage larvae or glass eels apparently must swim directionally to reach recruitment habitats. Their long larva ...
DOI:
10.1139/cjfas-2016-0281