Idiopathic Enteropathy in the Larval Pacific Herring, Clupea harengus pallasi (Valenciennes)
نویسندگان
چکیده
منابع مشابه
Impacts of suspended sediments on fertilization, embryonic development, and early larval life stages of the pacific herring, Clupea pallasi.
Pacific herring reproduce in the San Francisco Bay estuary during times of the year when suspended sediment loads are highest due to freshwater input, yet little is known about the effects of sediment on herring early life stages. During the first 2 h after eggs contacted water, embryos were adhesive and susceptible to having sediment particles attach permanently to the chorion. Treatment with ...
متن کاملTwo egg-derived molecules in sperm motility initiation and fertilization in the Pacific herring (Clupea pallasi).
Sperm of the Pacific herring are immotile at spawning. Two egg-derived molecules are capable of initiating sperm motility. One is herring sperm activating protein(s) (HSAPs) and the other is sperm motility initiation factor (SMIF). These two motility initiators differ in their location and association with the chorion, and in their isoelectric points and molecular weights. In this study we have...
متن کاملDevelopment of swimming movements and musculature of larval herring (Clupea harengus).
A kinematic analysis was made of swimming of larval herring Clupea harengus L. Swimming style was found to change with growth and development; the amplitude of swimming movements of early post-yolk-sac larvae increases linearly towards the tail, a style of swimming which relies mainly on resistive forces for propulsion. Later, after the caudal and dorsal fins have developed, the swimming style ...
متن کاملMethods for conducting bioassays using embryos and larvae of Pacific herring, Clupea pallasi.
The rapid decrease of several stocks of Pacific herring, Clupea pallasi, in Puget Sound, Washington, has led to concerns about the effects of industrial and nonpoint source contamination on the embryo and larval stages of this and related forage fish species. To address these concerns, the state of Washington and several industries have funded efforts to develop embryo and larval bioassay proto...
متن کاملTagging along: association among individual Pacific herring (Clupea pallasi) revealed by tagging1
More than 570 000 Pacific herring (Clupea pallasi) were tagged with external anchor tags during 429 tag release sessions between 1979 and 1992. Individually numbered tags were released in quantities of 1000–2000 at a time and recovered from commercial fisheries. Often several tags were recovered at the same time and place, and some recoveries occurred as “matches”, where two or more tags from a...
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ژورنال
عنوان ژورنال: Journal of Wildlife Diseases
سال: 1986
ISSN: 0090-3558
DOI: 10.7589/0090-3558-22.1.140