scholarly journals Evidence of Olfactory Imprinting at an Early Life Stage in Pink Salmon (Oncorhynchus gorbuscha)

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Nolan N. Bett ◽  
Scott G. Hinch ◽  
Andrew H. Dittman ◽  
Sang-Seon Yun
Keyword(s):  
Early Life ◽  
Life Stage ◽  
Pink Salmon ◽  
Early Life Stage ◽  
Oncorhynchus Gorbuscha ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Olfactory Imprinting

scholarly journals Lethal and Sublethal Effects in Pink Salmon (Oncorhynchus Gorbuscha) following Exposure to Five Aquaculture Chemotherapeutants

2021 ◽  
Author(s):  
Charanveer Sahota ◽  
Kassia Hyek ◽  
Brady Surbey ◽  
Chris Kennedy
Keyword(s):  
Confidence Intervals ◽  
Early Life ◽  
Sublethal Effects ◽  
Swimming Performance ◽  
Life Stage ◽  
Pink Salmon ◽  
Early Life Stage ◽  
Oncorhynchus Gorbuscha ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Salmon Fry

Abstract Early life stages of Pink salmon (Oncorhynchus gorbuscha) are at risk of exposure to the active ingredients of chemotherapeutant formulations (hydrogen peroxide [HP], azamethiphos [AZ], emamectin benzoate [EB], cypermethrin [CP] and deltamethrin [DM]) used to control sea lice in salmon aquaculture. LC50 values (95% confidence intervals) for acute 48-h water exposures in order of least to most toxic to seawater-adapted pink salmon fry were: HP (227 [138–418] mg/L), EB (1090 [676–2006] µg/L), AZ (80 [52–161] µg/L), CP (5.1 [3.0-10.5] µg/L), and DM (980 [640–1800] ng/L). In subchronic 10-d lethality sediment exposure tests, LC50 values (95% confidence intervals) in order of least to most toxic were: EB (2065 [1384–3720] µg/kg), CP (97 [58–190] µg/kg), and DM (1035 [640–2000] ng/kg). Alterations in behaviour varied between chemicals; no chemical attracted pink salmon fry; fish avoided HP to a limited extent at 50 mg/L), as well as EB (300 µg/L), and AZ (50 µg/L). Significant concentration-dependent decreases in olfactory responsiveness to food extract were seen following AZ, CP and DM exposures that occurred at lower concentrations with longer exposure periods (10 µg/L, 0.5 µg/L and 100 ng/L thresholds at 168 h). Following 10-d sediment exposures, olfaction was only affected by CP exposure at 50 µg/kg. Significant decreases in swimming performance (Ucrit) occured for HP, AZ, CP and DM at concentrations as low as 100 mg/L, 10 µg/L, 2 µg/L and 200 ng/L, respectively. This study provides comprehensive data on the lethal and sublethal effects of aquaculture chemotherapeutant exposure in early life stage pink salmon.

Sea lice infection of juvenile pink salmon (Oncorhynchus gorbuscha): effects on swimming performance and postexercise ion balance

2011 ◽  
Vol 68 (2) ◽  
pp. 241-249 ◽  
Author(s):  
L. Nendick ◽  
M. Sackville ◽  
S. Tang ◽  
C. J. Brauner ◽  
A. P. Farrell
Keyword(s):  
Swimming Performance ◽  
Life Stage ◽  
Pink Salmon ◽  
Infection Intensity ◽  
Sea Lice ◽  
Whole Body ◽  
Oncorhynchus Gorbuscha ◽  
Swimming Velocity ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Average Body Mass

Sea lice ( Lepeophtheirus salmonis ) infection negatively affected swimming performance and postswim body ion concentrations of juvenile pink salmon ( Oncorhynchus gorbuscha ) at a 0.34 g average body mass but not at 1.1 g. Maximum swimming velocity (Umax) was measured on over 350 individual pink salmon (0.2–3.0 g), two-thirds of which had a sea lice infection varying in intensity (one to three sea lice per fish) and life stage (chalimus 1 to preadult). For fish averaging 0.34 g (caught in a nearby river free of sea lice and transferred to seawater before being experimentally infected), the significant reduction in Umax was dependent on sea lice life stage, not intensity, and Umax decreased only after the chalimus 2 life stage. Experimental infections also significantly elevated postswim whole body concentrations of sodium (by 23%–28%) and chloride (by 22%–32%), but independent of sea lice developmental stage or infection intensity. For fish averaging 1.1 g (captured in seawater with existing sea lice), the presence of sea lice had no significant effect on either Umax or postswim whole body ions. Thus, a single L. salmonis impacted swimming performance and postswim whole body ions of only the smallest pink salmon and with a sea louse stage of chalimus 3 or greater.

THE EFFECT OF PRUDHOE BAY CRUDE OIL ON SURVIVAL AND GROWTH OF EGGS, ALEVINS, AND FRY OF PINK SALMON, ONCORHYNCHUS GORBUSCHA

1975 ◽  
Vol 1975 (1) ◽  
pp. 503-507 ◽  
Author(s):  
Stanley D. Rice ◽  
D. Adam Moles ◽  
Jeffrey W. Short
Keyword(s):  
Fresh Water ◽  
Oil Pollution ◽  
Life Stage ◽  
Pink Salmon ◽  
Water Soluble ◽  
Subsurface Water ◽  
Oncorhynchus Gorbuscha ◽  
Life Stages ◽  
Infrared Spectrophotometry ◽  
Pink Salmon Oncorhynchus Gorbuscha

ABSTRACT Standard 96-hour bioassays with “total” oil solutions in fresh water and seawater determined differences in sensitivity of the developing life stages of pink salmon (Oncorhynchus gorbuscha). Eggs were the most resistant and emergent fry (yolk sac absorbed) the most sensitive to acute 4-day exposures. In fresh water, the 96-hour median tolerance limit (TLm) of fry was 0.4 ml oil/liter mixed mechanically (12 ppm as measured in subsurface water by infrared spectrophotometry). In seawater, it was 0.04 ml oil/liter mixed mechanically (6 ppm as measured in subsurface water by infrared spectrophotometry). Three life stages of alevins were exposed to 10-day sublethal exposures of the water-soluble fraction to determine what doses might affect growth. Growth was affected most severely in alevins exposed during later developmental stages. Decreased growth was observed in fry after 10-day exposures at the lowest dose tested–0.015 ml oil/liter mixed by water agitation (0.73 ppm in subsurface water by infrared spectrophotometry–less than 10% of the 96-hour TLm limit for that life stage). In fresh water, susceptibility of early life history stages of pink salmon to oil pollution is great at the time of emergence (completion of yolk absorption). Susceptibility is even greater in seawater after fry migration.

Spawning Behavior and Early Life History of Pink Salmon (Oncorhynchus gorbuscha) in the Great Lakes

1982 ◽  
Vol 39 (10) ◽  
pp. 1353-1360 ◽  
Author(s):  
Wen-hwa Kwain
Keyword(s):  
Life History ◽  
Great Lakes ◽  
Early Life ◽  
Lake Superior ◽  
Pink Salmon ◽  
Early Life History ◽  
Oncorhynchus Gorbuscha ◽  
Spawning Behavior ◽  
Preferred Temperature ◽  
Pink Salmon Oncorhynchus Gorbuscha

Pink salmon (Oncorhynchus gorbuscha) from a single introduction to Lake Superior in 1956 have reproduced naturally and expanded into all the Great Lakes. Pink salmon feed at or near the surface as they approach spawning streams and some can still be found with food in the stomach on the spawning bed. Spawning behavior of these freshwater pink salmon is similar to that of marine stocks. Fecundity was 1060 ± 229 (24) per fish and total weight averaged 0.68 kg. Total mortality of embryos to 50% hatch ranged from 67 to 87% at five test temperatures (7, 9, 11, 13, 15 °C); 15 °C is considered to be the upper limit for freshwater pink salmon incubation. Juveniles moved downstream only at night and all juveniles usually took a month to complete this movement. Mean preferred temperature for pink salmon up to 36 wk old was 10 °C. Substantial numbers of pink salmon progeny of the 1975 year-class, which entered the Michipicoten River on Lake Superior to spawn in 1977 survived to, and matured at, each age from II to IV yr in a freshwater laboratory environment.Key words: pink salmon, feeding, spawning behavior, fecundity, incubation, emigration, preferred temperature, early life history, age IV, late maturation

STUDIES ON THE DEVELOPMENT OF THE KIDNEY OF THE PACIFIC PINK SALMON (ONCORHYNCHUS GORBUSCHA (WALBAUM)): III. THE DEVELOPMENT OF THE MESONEPHROS WITH PARTICULAR REFERENCE TO THE MESONEPHRIC TUBULE

1960 ◽  
Vol 38 (1) ◽  
pp. 1-7 ◽  
Author(s):  
J. D. Newstead ◽  
Peter Ford
Keyword(s):  
Early Life ◽  
Cell Mass ◽  
Pink Salmon ◽  
Oncorhynchus Gorbuscha ◽  
Intermediate Cell ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
The Pacific ◽  
Considerable Period

The origin and subsequent elaboration of the mesonephric tubules from condensation of cells derived from the intermediate cell mass is described from the earliest appearance of condensations to the differentiated stage in the year-old fingerling. It is noted that both the pronephric and mesonephric kidneys are present together for a considerable period of the early life of the pink salmon, though it is unlikely that both function simultaneously.

Age and growth of early life stage Atlantic Tarpon Megalops atlanticus from the northcentral Gulf of Mexico

2021 ◽  
Author(s):  
Patrick M. Graham ◽  
James S. Franks ◽  
Evan J. Anderson ◽  
Robert T. Leaf ◽  
Jason D. Tilley
Keyword(s):  
Gulf Of Mexico ◽  
Early Life ◽  
Life Stage ◽  
Early Life Stage ◽  
Age And Growth ◽  
Megalops Atlanticus ◽  
Atlantic Tarpon
Sign in / Sign up

Export Citation Format

Share Document