Table1. Mark-recapture Largemouth bass data from the Des Plaines River.
| Size (cm) Don't use plagiarized sources. Get Your Custom Essay on Find which species was more numerous | Homework Help For $10/Page 0nly | Number of individuals day 1 | Number of individuals day 2 | Population density estimate | |
| Unmarked | Marked | |||
| < 10 | 73 | 64 | 22 | 570 |
| 10-20 | 35 | 28 | 13 | |
| 20-30 | 20 | 22 | 18 | |
| > 30 | 6 | 4 | 2 | |
| Total | 134 | 118 | 55 | |
Using these data, estimate the density (number/hectare) of each size class plus the overall density. [Note: 1 hectare = 10,000 m2.]
Bluntnose minnow
Complete the following table
Table 2. Mark-recapture Bluntnose minnow data from the Des Plaines River.
| Size (cm) | Number of individuals day 1 | Number of individuals day 2 | Population density estimate | |
| Unmarked | Marked | |||
| < 3 | 252 | 174 | 63 | |
| 3-6 | 196 | 145 | 54 | |
| 6-9 | 177 | 132 | 58 | |
| > 9 | 34 | 26 | 11 | |
| Total | 659 | 477 | 186 | |
1. Which species was more numerous is the Des Plaines River? How much more abundant?
2. Based on the data, which species grows to a larger size?
3. Which species do you think is the prey and which is the predator? Why?
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