Advances in Fish Tagging and Marking Technology

2012 ◽  
Keyword(s):  
Marine Environment ◽  
Coho Salmon ◽  
Freshwater Environment ◽  
Southern Boundary ◽  
Thermal Habitat ◽  
Central California ◽  
Archival Tags ◽  
Thermal Changes ◽  
Seasonal Time Scale ◽  
Thermal Preferences

<i>Abstract</i>.—We deployed archival temperature loggers on juvenile and adult coho salmon <i>Oncorhynchus kisutch </i>and steelhead (anadromous rainbow trout) <i>O. mykiss </i>over both the freshwater and marine portions of their lifecycle in order to study their movements and thermal preferences. Beginning in 2003, loggers were deployed on juvenile coho salmon and juvenile and adult steelhead in a small central California coastal stream. A tag recovery from a coho salmon indicates the fish experienced variable temperatures on a daily to weekly basis in the marine environment (mean 13.3°C, range 10–18°C). Tags recovered from steelhead indicate use of a cooler, more stable, thermal habitat window in the marine environment (mean 11.0°C, range 8–14°C), often with little fluctuation over a period of weeks to months, and most thermal changes occurring at the seasonal time scale. Comparisons of steelhead data with sea surface temperature data suggest a northern migration out of the California Current to a narrow band of habitat that fluctuates between the southern boundary of the Bering Sea and north of the 40th parallel. In the shallow freshwater environment, steelhead appeared to be at the mercy of stream temperatures. However, in the estuary, where thermally variable habitats were available, steelhead used a surprisingly broad temperature range, including entering water thought to challenge their thermal tolerances (>20°C) even when cooler waters were available. Temperature loggers recovered on a local beach and island indicate tagged fish were consumed in the estuary by warm-blooded predators. All of these data coupled with a larger number of passive integrated transponder (PIT) tags, are helping to identify discrete habitats fish are using, exact dates of ocean entry and return, and enhance our understanding of marine survival and predation. Finally, archival tags may be useful in understanding habitat use of pelagic long-migrating species like steelhead, by tracking individuals in areas where other tagging technologies are poorly suited.

scholarly journals PERMO-TRIASSIC PALYNOLOGY OF THE WEST TIMOR

2016 ◽  
Vol 39 (1) ◽  
pp. 1-13
Author(s):  
Eko Budi Lelono ◽  
L. Nugrahaningsih ◽  
Dedi Kurniadi
Keyword(s):  
Marine Environment ◽  
Black Shale ◽  
Freshwater Environment ◽  
Tectonic Event ◽  
Palynological Analysis ◽  
Shallow Marine ◽  
Surface Samples ◽  
Calcareous Shale ◽  
Australian Continent ◽  
West Timor

Fifteen surface samples were examined to analyze palynology of the Permo-Triassic sediments of West Timor. The studied samples were collected from the clastic sediment of Bisane Formation which is considered to be the oldest formation. It derives from the Australian continent (Gondwana) following thecollision with the Banda volcanic arc. The Bisane Formation generally comprises thick calcareous sandstone (0.3-5 meters) with shale alternation and abundant marine microfossil of Chrinoid. The appearance of Chrinoid may indicate Permian age and shallow marine environment. Meanwhile, other Bisane sediment shows different lithology in which it is composed of the intercalation of non-calacreous, dark gray to black shale and siltstone showing papery structure and rich in sulphur. Generally, palynological assemblage of the studied samples characterises Permo-Triassic age as indicated by the existence of common striate-bisaccate pollen including Protohaploxypinus samoilovichii, P. fuscus, P. goraiensis, Striatopodocarpidites phaleratus, Pinuspollenites globosaccus and Lunatisporites pellucidus. However, the appearance of trilete-monosaccate spores of Plicatipollenites malabarensis and Cannanoropollis janakii within the non-calcareous shale samples de􀂿 nes the age as Permian or older for these samples. Interestingly, marine dino􀃀 agellates appear to mark calcareous samples suggesting the in􀃀 uence of a marine environment. They disappear from the non-calcareous samples indicating a freshwater environment. By integrating this palynological analysis and Permian tectonic event which is marked by rifting, it can be interpreted that the non-calcareous samples were formed during early syn-rift as evidenced by the occurrence of freshwater deposit (may be lacustrine). Subsequently, following sea level rises during post rift, the depositional environment shifted to shallow marine as indicated by the existence of calcareous Permo-Triassic samples. If this is the case, the appearance of Permo-Triassic sediments provides an opportunity to 􀂿 nd a new petroleum system in the Paleozoic series of West Timor. Source rock is represented by black shale, whereas reservoir is represented by thick sandstone.

Influence of salinity on ultrastructure of the secretory cells of the adenohypophyseal pars distalis in yearling coho salmon (Oncorhynchus kisutch)

1977 ◽  
Vol 55 (1) ◽  
pp. 183-198 ◽  
Author(s):  
Yoshitaka Nagahama ◽  
W. Craig Clarke ◽  
W. S. Hoar
Keyword(s):  
Freshwater Fish ◽  
Fresh Water ◽  
Coho Salmon ◽  
Sea Water ◽  
Salt Water ◽  
Light And Electron Microscopy ◽  
Secretory Cells ◽  
Plasma Sodium ◽  
Pars Distalis ◽  
Freshwater Environment

Six different types of secretory cells were identified by light and electron microscopy in the adenohypophyseal pars distalis of yearling coho salmon acclimated to fresh or salt water. Prolactin cells are markedly more active in the freshwater than the seawater fish; these cells exhibit definite functional activity 3 days after transfer from salt to fresh water, indicating an osmoregulatory role of prolactin in the freshwater environment. Plasma sodium showed a significant decline 6 h after transfer from sea water to fresh water and, even after 1 week, remained lower than in the fully acclimated freshwater fish. Corticotropic (ACTH) cells did not appear cytologically different in freshwater and seawater fish. GH cells, the most prominent cells in the proximal pars distalis, appear more numerous and more granulated in the seawater fish, suggesting an osmoregulatory involvement in young coho salmon. Putative thyrotropic (TSH) and putative gonadotropic cells (GTH) can be distinguished by differences in granulation; only one type of GTH cell is evident with ultrastructural features that differ from those of sexually mature salmon. Stellate, non-granulated cells occur in all regions of the adenohypophysis but more frequently in the prolactin follicles; they are much more prominent in the seawater than freshwater fish.

Foraging Behavior of Hatchery-Produced Coho Salmon (Oncorhynchus kisutch) Smolts on Live Prey

1985 ◽  
Vol 42 (12) ◽  
pp. 1915-1921 ◽  
Author(s):  
Cynthia A. Paszkowski ◽  
Bori L. Olla
Keyword(s):  
Foraging Behavior ◽  
Marine Environment ◽  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
Choice Experiments ◽  
Sand Lance ◽  
Live Prey ◽  
Ammodytes Hexapterus ◽  
Natural Prey

We presented three groups of naive hatchery-produced, pellet-reared coho salmon (Oncorhynchus kisutch) with live, natural prey and observed their foraging behavior. Of 26 individuals examined, 20 captured one or more Crangon (sand shrimp) within 1 h of their first exposure to these prey. Six older [Formula: see text] accelerated smolts (underyearlings) displayed improved foraging performances with experience, capturing their first Crangon sooner during their second, compared with their first, exposure. Four of five of these fish successfully captured sand lance (Ammodytes hexapterus) within 1 h of their first presentation. Two groups of 10 recently smolted fingerlings (< 190 mm TL), one accelerated and one conventionally reared (yearlings), were used in choice experiments and simultaneously offered equal masses of Crangon and pellets. Six of the accelerated and seven of the conventionally reared fish ate larger amounts of Crangon than pellets, with all 20 fish striking more at Crangon than at pellets. Our results suggest that a majority of hatchery-produced coho salmon smolts readily recognize, capture, and ingest natural prey and seem capable of foraging successfully upon release into the marine environment.

Upper thermal limits on the oceanic distribution of Pacific salmon (Oncorhynchus spp.) in the spring

1995 ◽  
Vol 52 (3) ◽  
pp. 489-503 ◽  
Author(s):  
D. W. Welch ◽  
A. I. Chigirinsky ◽  
Y. Ishida
Keyword(s):  
North Pacific ◽  
Coho Salmon ◽  
Pacific Salmon ◽  
Fish Fauna ◽  
Additive Models ◽  
Direct Result ◽  
Southern Boundary ◽  
Subarctic Pacific ◽  
Thermal Limits ◽  
The North

Pacific salmon are normally thought to be distributed throughout the Subarctic Pacific, an area where they form the dominant fish fauna. We use a series of generalized additive models to show that salmon exhibit a sharp step-function response to temperature in the oceanic eastern north Pacific in spring. The critical temperature defining the southern boundary varied by species: 10.4 °C for pink and chum salmon, 9.4 °C for coho salmon, and 8.9 °C for sockeye salmon. These thermal limits occur well to the north of the southern boundary of the Transition Zone, at widely separated geographic positions within the Subarctic Domain, and at temperatures much lower than the lethal upper limit for each species. The sharp decline in abundance with temperature, and the remarkably low temperatures at which the response occurs, suggests that thermal barriers form an effective limit to the offshore distribution of salmon in spring, and can limit the distribution of Pacific salmon to a relatively small area of the Subarctic Pacific. The strength of this response is presumably the direct result of strong evolutionary selection. Future temperature changes in the North Pacific could therefore have a direct impact on the production dynamics of Pacific salmon.

Marine environment-based forecasting of coho salmon (Oncorhynchus kisutch) adult recruitment

2011 ◽  
Vol 21 (1) ◽  
pp. 1-19 ◽  
Author(s):  
DAVID E. RUPP ◽  
THOMAS C. WAINWRIGHT ◽  
PETER W. LAWSON ◽  
WILLIAM T. PETERSON
Keyword(s):  
Marine Environment ◽  
Coho Salmon ◽  
Oncorhynchus Kisutch

Marine temperature and depth use by anadromous Arctic char correlates to body size and diel period

2020 ◽  
Vol 77 (5) ◽  
pp. 882-893 ◽  
Author(s):  
Ingeborg M. Mulder ◽  
Corey J. Morris ◽  
J. Brian Dempson ◽  
Ian A. Fleming ◽  
Michael Power
Keyword(s):  
Body Size ◽  
Salvelinus Alpinus ◽  
Activity Patterns ◽  
Dive Duration ◽  
Arctic Char ◽  
Ontogenetic Changes ◽  
Thermal Habitat ◽  
Physiological Processes ◽  
Thermal Preferences ◽  
Depth Use

Acoustic and archival telemetry were used to study the marine movements of 115 anadromous Arctic char (Salvelinus alpinus) at two sites in southern Labrador, Canada, in relation to daily variation in temperature and depth use, body size, and their effects on marine activity patterns. Although evidence varied between locations, Arctic char generally utilized ambient water temperatures available in the upper water column, possibly in aid of physiological processes such as digestion, whereas deeper waters were suggested to be used for feeding purposes. Size-dependent thermal preferences were evident, with larger individuals utilizing cooler water temperatures (8.5 °C) compared with smaller individuals (9.5 °C), a pattern suggestive of ontogenetic changes in thermal habitat use for the purposes of growth maximization. Diurnal patterns of diving activity were interpreted to reflect the vertical migration of prey items and (or) the visual capabilities of Arctic char. Dive duration was dependent on body size and external body temperature with smaller individuals performing shorter dives in colder water temperatures (<1 min at 5 °C) than larger fish (∼2 min at 5 °C), likely to maintain their core temperature and abilities to both effectively capture prey and avoid predation.

scholarly journals A Review of the Migration and Transformation of Microplastics in Inland Water Systems

2021 ◽  
Vol 19 (1) ◽  
pp. 148
Author(s):  
Yamei Cai ◽  
Chen Li ◽  
Yaqian Zhao
Keyword(s):  
Marine Environment ◽  
Water Environment ◽  
Water Systems ◽  
Human Society ◽  
Freshwater Environment ◽  
Inland Water ◽  
Large Numbers ◽  
Transformation Mechanisms ◽  
Lakes And Reservoirs ◽  
Transformation Processes

Plastic productions continue to grow, and improper management of plastic wastes has raised increasing concerns. This reflects the need to explore the microplastics in water bodies. Microplastics have been regarded as emerging pollutants in water systems. In recent years, large numbers of studies across the world were conducted to investigate the distribution, behavior and the integrated impacts of microplastics in both the marine environment and the freshwater environment. Compared with the marine environment, the migration and transformation of microplastics in inland water systems seem more informative as they may reach the marine environment as one of their final destinations. Based on the updated literature, this review aims at overviewing the migration and transformation processes/behavior of microplastics in rivers, lakes and reservoirs. As for the migration, the microplastics’ fate is from manufacturing, consuming, discarding to migrating and returning to the human society which could form a closed though complicated circle. For transformation, microplastics experience five stages of their fate in inland water systems. These include changing into suspending pieces; ending up deposited as the sediment; resuspending under various changing conditions; ending up via burying into the soil as the part of the riverbed; reaching the marine environment; and being ingested by organisms and also becoming entangled with aquatic plants, etc. It is highly expected that this review can provide a valuable reference for better understanding microplastics’ migration and transformation mechanisms and a guide for the future study of microplastics in an inland water environment.

The effects of early sandbar formation on the abundance and ecology of coho salmon (Oncorhynchus kisutch) and steelhead trout (Oncorhynchus mykiss) in a central California coastal lagoon

2018 ◽  
Vol 75 (12) ◽  
pp. 2184-2197 ◽  
Author(s):  
Ann-Marie K. Osterback ◽  
Cynthia H. Kern ◽  
Emerson A. Kanawi ◽  
Jeffrey M. Perez ◽  
Joseph D. Kiernan
Keyword(s):  
Oncorhynchus Mykiss ◽  
Coastal Lagoon ◽  
Coho Salmon ◽  
Temporal Trends ◽  
Oncorhynchus Kisutch ◽  
High Water ◽  
Activity Levels ◽  
Steelhead Trout ◽  
Central California ◽  
Physiological Processes

We investigated how extreme drought conditions influenced the abundance, growth, movement, and seawater readiness of juvenile coho salmon (Oncorhynchus kisutch) and steelhead trout (Oncorhynchus mykiss) in a small central California coastal lagoon. In 2015, the seasonal sandbar at the mouth of Scott Creek formed over 2 months earlier than average, effectively trapping fish in the lagoon for 7 additional months (mid-May through December) before outmigration opportunities eventually resumed. Monthly mark–recapture sampling demonstrated that juvenile coho salmon and steelhead were able to persist in the lagoon during extended periods of high water temperature and low dissolved oxygen concentration. Both salmonid species exhibited similar temporal trends in abundance, growth, and Na+-K+-ATPase activity levels during lagoon residence; however, abundance and growth rates were consistently higher for steelhead. Stationary passive integrated transponder tag antenna detections revealed recurrent movement of individuals between the warm lagoon and cooler lower mainstem creek, suggesting individuals regulated key physiological processes by moving between the adjacent habitats. Our study provides new insight concerning the consequences of drought for imperiled salmonid populations and underscores the importance of life-history diversity during extreme climatic events.

In Central California, Coho Salmon Are on the Brink

Science ◽  
2010 ◽  
Vol 327 (5965) ◽  
pp. 512-513 ◽  
Author(s):  
G. Miller
Keyword(s):  
Coho Salmon ◽  
Central California
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