elver

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elver

a young eel, esp one migrating up a river from the sea
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More recently, Cieri and McCleave (2000) suggested that there are a number of inconsistencies when growth zones of leptocephali are compared with the same zone in the otoliths of glass eels and juvenile American eels.
The objectives of this study were 1) to describe the 1985-95 annual recruitment of glass eels to the estuary near Beaufort; 2) to present the variations in seasonal densities of glass eels; 3) to analyze the seasonal length frequency by weekly intervals, and 4) to compare mean ages of glass eels at three locations along the eastern coast of North America (North Carolina, New Jersey, and New Brunswick).
Glass eels were collected from two sites in North Carolina: 1) in the lower Newport River at Pivers Island, about 2 km inside Beaufort Inlet; and 2) at Black Creek, a small tributary of the Newport River, at the entrance to a millpond, about 9.
The total ages and the ages found in the glass-eel growth zone were compared with those for small and larger glass eels arriving during the recruitment season.
Age distributions of glass eels captured by month were compared by using the F-test.
The total density of glass eels in the Beaufort estuary varied considerably between 1985 and 1995, but there was no significant trend ([F.
When seasonal changes in length of glass eels among recruitment years were analyzed (Table 1), the slope of the regression for all 10 years (Fig.
Glass eels were recruited to the Beaufort estuary over a 7-month period from November to early May during the ten years from 1985-86 to 1994-95.
The lengths of elvers captured in the tidal net at Pivers Island fell within the expected latitudinal length range reported by Haro and Kreuger (1988) and were similar to the 49-56 mm TL length range for glass eels from a river in Georgia (Helfman et al.
The mean age from our glass-eel growth zones on otoliths of glass eels agreed with the ages determined from other glass eels collected in North Carolina (Wang and Tzeng, 1998).