Catch composition, Gonadosomatic Index and Condition Factor of Bluefish (Pomatomus saltatrix L., 1766)
نویسندگان
چکیده
منابع مشابه
Tail thrust of bluefish Pomatomus saltatrix at different buoyancies, speeds, and swimming angles.
1. The tail thrust of bluefish Pomatomus saltatrix was measured using a body accelerometer at different water speeds, buoyancies, and angles of water flow to determine the contribution of tail thrust in overcoming parasitic drag, induced drag, and weight directed along the track. The lengths and weights of the fish averaged 0.52 m and 1.50 kg respectively. 2. The tail thrust overcoming parasiti...
متن کاملForces on the Tail Surface of Swimming Fish: Thrust, Drag and Acceleration in Bluefish (pomatomus Saltatrix)
1. Pressures on the right and left sides of the tails of swimming bluefish were measured and found to have a range of +5*9 to —5-9 cm H20. The pressures were resolved into their forward and lateral vectorial components of force to allow calculation of forward and lateral force and power at speeds ranging from 0-26 to 0-87 m/s. 2. The peak to peak changes in force of acceleration of the body, me...
متن کاملCohort splitting in bluefish, Pomatomus saltatrix, in the US mid-Atlantic Bight
Atlantic bluefish exhibit cohort splitting, whereby two modes of juvenile recruits originate from spatially distinct springand summer-spawning regions in US Atlantic shelf waters. We evaluate the pattern of cohort splitting in a transition area (US Maryland coastal region and Chesapeake Bay) between the two major spawning regions. Spring and summer cohorts were differentially represented in Mar...
متن کاملSwimming Energetics of Striped Bass (morone Saxatilis) and Bluefish (pomatomus Saltatrix): Hydrodynamic Correlates of Locomotion and Gill Ventilation
1. Swimming patterns of striped bass and bluefish were monitored using a miniature accelerometer to record instantaneous acceleration and instantaneous deceleration during tail-thrusts over a wide range of swimming speeds. In addition, ventilatory excurrent flow patterns were visualized in swimming striped bass by injecting milk via a buccal catheter. 2. Both species accomplish steady swimming ...
متن کاملSeasonal changes in gonadosomatic index, hepatosomatic index and condition factor of the female Geno tooth-carp, Aphanius ginaonis
A dearth of basic biological information, especially about reproductive traits for the Geno tooth-carp, Aphanius ginaonis, currently hinders the proper management efforts for this valuable species. This fish is an endemic cyprinodont that exclusively lives in the Geno hot spring. In this study, reproductive biology of female A. ginaonis was studied, based upon the annual changes in gonadosomati...
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ژورنال
عنوان ژورنال: Journal of Anatolian Environmental and Animal Sciences
سال: 2019
ISSN: 2548-0006
DOI: 10.35229/jaes.543111