Which of the following statements is true according to this figure? Choose the best answer. A. With sea otters, kelp forest food web Sharks Sea otter Larger fishes & octopuses Larger crabs Sea stars Sea urchins Abalones Smaller predatory fishes & invertebrates Drift algae & dead animals Smaller herbivorous fishes & invertebrates Sessile invertebrates Planktonic invertebrates Kelps & other algae Microscopic planktonic algae

Which of the following statements is true according to this figure? Choose the best answer. A. With sea otters, kelp forest food web Sharks Sea otter Larger fishes & octopuses Larger crabs Sea stars Sea urchins Abalones Smaller predatory fishes & invertebrates Drift algae & dead animals Smaller herbivorous fishes & invertebrates Sessile invertebrates Planktonic invertebrates Kelps & other algae Microscopic planktonic algae

Aquaculture Science

3rd Edition

ISBN:9781133558347

Author:Parker

Publisher:Parker

Chapter2: Aquatic Plants And Animals

Section: Chapter Questions

Problem 3KA

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Red-billed oxpeckers feed almost exclusively on what they can collect from the skin of large African mammals. This includes ticks and other ectoparasites, but also dead skin and blood of the mammal. The attached image shows a red-billed oxpecker sitting on the back of a warthog with a tick in its bill. A recent study found that the depletion of African mammals due to habitat loss and hunting leads to declines in oxpeckers. Researchers were interested in whether the nature of the interaction between African mammals and oxpeckers was context-dependent. They compared the effect of removal of oxpeckers in two areas in which the number of ticks on the mammals differed. In area 2, stomach content data of oxpeckers showed they consumed ~400 ticks per day. Cows were infested experimentally with large numbers of tick larvae and then oxpeckers were introduced at different stages in the tick life cycle (larvae; nymph; adult). They counted the number of adult ticks that dropped off the…