Figure 15.25 Some species of deep sea anglerfish have bioluminescent lures. Victims curious about the lure are quickly eaten by the predator. This female of genus Melanocoetus is about 10 centimeters (4 inches) long and carries a permanently attached parasitic male. Datyne A. MurawskiNational Geogaphic Stodk

Figure 15.25 Some species of deep sea anglerfish have bioluminescent lures. Victims curious about the lure are quickly eaten by the predator. This female of genus Melanocoetus is about 10 centimeters (4 inches) long and carries a permanently attached parasitic male. Datyne A. MurawskiNational Geogaphic Stodk

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter19: Population And Community Ecology

Section: Chapter Questions

Problem 2ACQ: Figure 19.6 If the major food source of seals declines due to pollution or overfishing, which of the...

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Iguana Decline In 1987, Martin Wikelski began a long-term study of marine iguanas in the Galpagos Islands. He marked iguanas on two islandsGenovesa and Santa Feand collected data on how their body size, survival, and reproductive rates varied over time. He found that because iguanas eat algae and have no predators, deaths usually result from food shortages, disease, or old age. In January 2001, an oil tanker ran aground and leaked a small amount of oil into the waters near Santa Fe. FIGURE 44.3 shows the number of marked iguanas that Wikelski and his team counted in their study populations just before the spill and about a year later. FIGURE 44.3 Shifting numbers of marked marine iguanas on two Galpagos islands. An oil spill occurred near Santa Fe just after the January 2001 census (orange bars). A second census was carried out in December 2001 (green bars). Wikelski concluded that changes on Santa Fe were the result of the oil spill, rather than sea temperature or other climate factors common to both islands. How would the census numbers be different from those he observed if an adverse event had affected both islands?
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