Pacific herring (Clupea pallasii) consumption by marine birds during winter in Prince William Sound, Alaska

2015 ◽  
Vol 24 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Mary Anne Bishop ◽  
Jordan T. Watson ◽  
Kathy Kuletz ◽  
Tawna Morgan
Keyword(s):  
Pacific Herring ◽  
Prince William Sound ◽  
Marine Birds ◽  
Clupea Pallasii

scholarly journals Multi-decadal shifts in the distribution and timing of Pacific herring (Clupea pallasii) spawning in Prince William Sound, Alaska

2021 ◽  
Author(s):  
David W. McGowan ◽  
Trevor A. Branch ◽  
Stormy Haught ◽  
Mark D. Scheuerell
Keyword(s):  
Critical Role ◽  
First Year ◽  
Pacific Herring ◽  
Prince William Sound ◽  
Clupea Pallasii ◽  
Period Effects ◽  
Spawning Areas ◽  
Spatial Differences ◽  
Abrupt Shifts ◽  
Timing Shifts

The location and timing of spawning play a critical role in pelagic fish survival during early life stages and can affect subsequent recruitment. Spawning patterns of Pacific herring (Clupea pallasii) were examined in Prince William Sound (1973–2019) where the population has failed to recover since its collapse in 1993. Abrupt shifts in spawn distribution preceded the rapid increase in population size in the 1980s and later its collapse by one and two years, respectively. Following the population collapse, spawning contracted away from historical regions towards southeastern areas of the Sound, and the proportion of occupied spawning areas declined from 65% to <9%. Spatial differences in spawn timing variation were also apparent, as the median spawn date shifted earlier by 26 days in eastern and 15 days in western areas of Prince William Sound between 1980 and 2006, and then shifted later by 25 (eastern) and 19 (western) days over a 7-year period. Effects of contracted spawning areas and timing shifts on first-year survival and recruitment are uncertain and require future investigation.

scholarly journals An empirical Bayesian approach to incorporate directional movement information from a forage fish into the Arnason-Schwarz mark-recapture model

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Mary A. Bishop ◽  
Jordan W. Bernard
Keyword(s):  
Bayesian Approach ◽  
Gulf Of Alaska ◽  
Forage Fish ◽  
Pacific Herring ◽  
Prince William Sound ◽  
Modeling Framework ◽  
Empirical Bayesian ◽  
Directional Information ◽  
Directional Movement ◽  
Empirical Bayesian Approach

Abstract Background Over the past two decades, various species of forage fish have been successfully implanted with miniaturized acoustic transmitters and subsequently monitored using stationary acoustic receivers. When acoustic receivers are configured in an array, information related to fish direction can potentially be determined, depending upon the number and relative orientation of the acoustic receivers. However, it can be difficult to incorporate directional information into frequentist mark-recapture methods. Here we show how an empirical Bayesian approach can be used to develop a model that incorporates directional movement information into the Arnason-Schwarz modeling framework to describe survival and migration patterns of a Pacific herring (Clupea pallasii) population in coastal Alaska, USA. Methods We acoustic-tagged 326 adult Pacific herring during April 2017 and 2018 while on their spawning grounds in Prince William Sound Alaska, USA. To monitor their movements, stationary acoustic receivers were deployed at strategic locations throughout the Sound. Receivers located at the major entrances to the Gulf of Alaska were arranged in parallel arrays to determine the directional movements of the fish. Informative priors were used to incorporate the directional information recorded at the entrance arrays into the model. Results A seasonal migratory pattern was found at one of Prince William Sound’s major entrances to the Gulf of Alaska. At this entrance, fish tended to enter the Gulf of Alaska during spring and summer after spawning and return to Prince William Sound during the fall and winter. Fish mortality was higher during spring and summer than fall and winter in both Prince William Sound and the Gulf of Alaska. Conclusions An empirical Bayesian modeling approach can be used to extend the Arnason-Schwarz modeling framework to incorporate directional information from acoustic arrays to estimate survival and characterize the timing and direction of migratory movements of forage fish.

Testicular development and serum profiles of steroid hormone levels in captive male Pacific herring Clupea pallasii during their first maturational cycle

2002 ◽  
Vol 68 (5) ◽  
pp. 1099-1105 ◽  
Author(s):  
YASUNORI KOYA ◽  
KIYOSHI SOYANO ◽  
KAZUHISA YAMAMOTO ◽  
HIROYUKI OBANA ◽  
TAKAHIRO MATSUBARA
Keyword(s):  
Steroid Hormone ◽  
Testicular Development ◽  
Pacific Herring ◽  
Clupea Pallasii ◽  
Hormone Levels

The Development of the Vertebral Column of the Pacific Herring (Clupea pallasii)

1940 ◽  
Vol 5a (1) ◽  
pp. 11-22 ◽  
Author(s):  
Agnes M. Gwyn
Keyword(s):  
Vertebral Column ◽  
Clupea Harengus ◽  
Pacific Herring ◽  
Embryological Development ◽  
Vertebral Number ◽  
Clupea Pallasii ◽  
Additional Information ◽  
The Pacific

Embryological development is followed over a period of ten weeks after hatching. The mode of formation of the components of the vertebral column is compared with that in Clupea harengus, and is described in detail where differences are observed or additional information is available. Development appears essentially similar in the two species, although in general more rapid relative to length in C. pallasii. At hatching, myotome formation is complete and the ultimate vertebral number of an individual is presumably determined by that time. During ossification of the vertebral column, complex growth gradients from one or more centres are observed.

Sperm-activating proteins from unfertilized eggs of the Pacific herring, Clupea pallasii

1995 ◽  
Vol 37 (3) ◽  
pp. 257-261 ◽  
Author(s):  
Shoji Oda ◽  
Yoshihiko Igarashi ◽  
Hideki Ohtake ◽  
Kosuke Sakai ◽  
Nobuyoshi Shimizu ◽  
...  
Keyword(s):  
Pacific Herring ◽  
Clupea Pallasii ◽  
The Pacific

scholarly journals Inability to demonstrate fish-to-fish transmission of Ichthyophonus from laboratory infected Pacific herring Clupea pallasii to naïve conspecifics

2012 ◽  
Vol 99 (2) ◽  
pp. 139-144 ◽  
Author(s):  
JL Gregg ◽  
CA Grady ◽  
CS Friedman ◽  
PK Hershberger
Keyword(s):  
Pacific Herring ◽  
Clupea Pallasii

scholarly journals Pacific herring Clupea pallasii are not susceptible to vibriosis from Vibrio anguillarum or V. ordalii under laboratory conditions

2020 ◽  
Vol 43 (12) ◽  
pp. 1607-1609
Author(s):  
Paul K. Hershberger ◽  
Matthew E. T. Stinson ◽  
Betsy Hall ◽  
Ashley H. MacKenzie ◽  
Jacob L. Gregg ◽  
...  
Keyword(s):  
Vibrio Anguillarum ◽  
Pacific Herring ◽  
Clupea Pallasii ◽  
Laboratory Conditions

scholarly journals Nine Years After the Exxon Valdez Oil Spill: Effects on Marine Bird Populations in Prince William Sound, Alaska

The Condor ◽  
2000 ◽  
Vol 102 (4) ◽  
pp. 723-737 ◽  
Author(s):  
David B. Irons ◽  
Steven J. Kendall ◽  
Wallace P. Erickson ◽  
Lyman L. McDonald ◽  
Brian K. Lance
Keyword(s):  
Oil Spill ◽  
Bird Species ◽  
Population Level ◽  
Prince William Sound ◽  
Negative Effects ◽  
Exxon Valdez ◽  
Marine Bird ◽  
Marine Birds ◽  
Exxon Valdez Oil Spill ◽  
Positive Effects

Abstract We compared post Exxon Valdez oil-spill densities of marine birds in Prince William Sound from 1989–1991, 1993, 1996, and 1998 to pre-spill densities from 1984–1985. Post-spill densities of several species of marine birds were lower than expected in the oiled area of Prince William Sound when compared to densities in the unoiled area. These negative effects continued through 1998 for five taxa: cormorants, goldeneyes, mergansers, Pigeon Guillemot (Cepphus columba), and murres. Black Oystercatchers (Haematopus bachmani) and Harlequin Ducks (Histrionicus histrionicus) exhibited negative effects in 1990 and 1991. Loons showed a weak negative effect in 1993. Black-legged Kittiwakes (Rissa tridactyla) showed relative decreases in 1989, 1996, and 1998 which may have been caused by shifts in foraging distribution rather than declines in populations. Glaucous-winged Gulls (Larus glaucescens) showed positive effects in most post-spill years. Murrelets and terns showed relative increases in 1993, 1996, and 1998. Generally, taxa that dive for their food were negatively affected, whereas taxa that feed at the surface were not. Effects for some taxa were dependent upon the spatial scale at which they were analyzed. Movements of birds and the mosaic pattern of oiling reduced our ability to detect oil-spill effects, therefore our results may be conservative. Several marine bird species were negatively affected at the population level and have not recovered to pre-spill levels nine years after the oil spill. The reason for lack of recovery may be related to persistent oil remaining in the environment and reduced forage fish abundance.

Sign in / Sign up

Export Citation Format

Share Document