Effects of Ultrasonic Frequencies on Schooling Behavior of American Shad (Alosa sapidissima)
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چکیده
منابع مشابه
Development of ultrasound detection in American shad (Alosa sapidissima).
It has recently been shown that a few fish species, including American shad (Alosa sapidissima; Clupeiformes), are able to detect sound up to 180 kHz, an ability not found in most other fishes. Initially, it was proposed that ultrasound detection in shad involves the auditory bullae, swim bladder extensions found in all members of the Clupeiformes. However, while all clupeiformes have bullae, n...
متن کاملMigratory Patterns of American Shad (alosa Sapidissima) Revealed by Natural Geochemical Tags in Otoliths
Geochemical signatures in the otoliths of diadromous fishes may allow for retrospective analyses of natal origins. In an assessment of river-specific signatures in American shad (Alosa sapidissima), an anadromous clupeid native to the Atlantic coast of North America, stable isotope and elemental ratios in otoliths of juvenile American shad produced accurate natal tags from 12 rivers. Significan...
متن کاملSTUDIES ON REPRODUCTIVE BIOLOGY AND ENDOCRINOLOGY IN A PRIMITIVE TELEOSTEI, THE AMERICAN SHAD (Alosa sapidissima)
American shad is an anadromous fish that displays asynchronous ovarian development. In an effort to enhance our understanding of the reproductive cycle of this primitive Teleostei species, and provide better management tools for the Chesapeake fishery, we have conducted studies of its gonadal and hormonal cycles. We developed various assays to measure reproductive endocrine factors including: 1...
متن کاملThe loss of hyperosmoregulatory ability in migrating juvenile American shad, Alosa sapidissima
Investigations on juvenile American shad (Alosa sapidissima) revealed several physiological changes associated with downstream migration. Plasma chloride decreased 20% in wild juvenile shad during the autumn migration. Migrants had lower condition factor and hematocrit than non-migrant shad captured by beach seining. Gill Na+,K+-ATPase activity of migrant shad was higher than non-migrant; a 2.5...
متن کاملDevelopmental and environmental regulation of chloride cells in young American shad, Alosa sapidissima.
Location, abundance, and morphology of gill chloride cells were quantified during changes in osmoregulatory physiology accompanying early development in American shad, Alosa sapidissima. During the larval-juvenile transition of shad, gill chloride cells increased 3.5-fold in abundance coincident with gill formation, increased seawater tolerance, and increased Na(+),K(+)-ATPase activity. Chlorid...
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ژورنال
عنوان ژورنال: Journal of Aquaculture & Marine Biology
سال: 2015
ISSN: 2378-3184
DOI: 10.15406/jamb.2015.02.00019