Tab. 1 in Reproduction, feeding and migration patterns of Prochilodus nigricans (Characiformes: Prochilodontidae) in northeastern Ecuador

Tab. 1. Environmental condition at collecting sites in the Aguarico River basin of Eastern Ecuador, 1999 (see Fig. 1 for locations). Codes for dominant shoreline vegetation at each site are: T = Tessaria sp., G = Gynerium sp., C = Cecropia sp., Cb = Ceiba sp., P = Palmae, I = Inga sp. Positions were determined with a hand-held GPS, pH (average of monthly records) was measured with hand-held pH meter (± 0.2), and temperatures are monthly averages made with mercury thermometer. Locations marked with asterisk were in mouths of tributaries. LocationAltitude, mPosition coordinatespHWaterAirCurrentRiverWater typeShoreline vegetationtemp., °Ctemp., °Cspeed, m s-1width, mDue (A)4650° 00' 25"N 77° 23' 34" W7.620.528.10.9-2.560clear/whiteHigh Forest T, G, C, PDureno (B)2500° 05' 09"S 76° 32' 10" W7.222.127.51.0-2.5100turbid/whiteHigh Forest T, G, C, Cb, PChiritza (C)2650° 05' 08"N 76° 44' 06" W7.122.825.70.1-0.7150turbid/whiteHigh Forest T, G, C, Cb, PCuyabeno (D)*2200° 15' 30"S 75° 53' 58" W6.424.3280.2-0.850blackHigh Forest T, I, C, CbSábalo (E)*2100° 23' 35"S 75° 40' 05" W5.424.2270.09-0.630blackHigh Forest I, C, CbYanayacu-Zancudo (F)*2050° 34' 55"S 75° 29' 32" W5.524.325.30.06-0.220blackHigh Forest T, G, I, C, Cb