. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 40 mV L 5C C 20 C 20 - a is -\ 2 u e 10 I 5 -. Figure 1. Action potentials recorded al different temperatures. (A) Propagated action potentials from a single position in a single giant axon measured at three temperatures. (B) Propagated action potentials recorded at two positions in a single axon measured at two temperatures. Axons were bathed in 10 K+ artificial seawater. Brief transients at the beginning of records are stimulus artifacts. Figure 2. Seasonal temperature variation in the Woods Hole Passage. Hourly tempe
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 40 mV L 5C C 20 C 20 - a is -\ 2 u e 10 I 5 -. Figure 1. Action potentials recorded al different temperatures. (A) Propagated action potentials from a single position in a single giant axon measured at three temperatures. (B) Propagated action potentials recorded at two positions in a single axon measured at two temperatures. Axons were bathed in 10 K+ artificial seawater. Brief transients at the beginning of records are stimulus artifacts. Figure 2. Seasonal temperature variation in the Woods Hole Passage. Hourly temperature records from April through September for 1997 (solid line) and 1998 (dotted linel. Temperatures were taken from NOAA station number 8447930 located at the Woods Hole Oceanographic Institution at 41° ' N, 70° ' W. stimulus, are recorded at two points, separated by mm, along the same axon. From this experiment the conduction velocity is calculated to be m/s at 5°C and m/s at 20°C. The axons used in this figure were dissected from a squid captured in May. Water temperatures in the Woods Hole Passage and in Vineyard Sound, where squid for these studies were cap- tured, change dramatically between the spring and summer. In May, squid were collected by jigging from waters di- rectly measured to be 10°-12°C. In late August, squid were captured by trawling, and on two trawls the average tem- perature at the net opening was recorded to be °C and °C. Figure 2 shows hourly water temperatures recorded by the NOAA tidal monitoring station (adjacent to the Woods Hole Oceanographic Institution pier in the Woods Hole Passage) between April and October, 1997 and 1998. During May, water temperatures vary between about 10° and 12°C. In August they average slightly greater than 20°C. These values are corroborated by daily temperature records taken near the MBL seawater intake system at a depth of 15 feet. In 1998, May and August average temper- atu
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
