The three key themes of Pacific salmon biology are anadromy, philopatry (homing), and semelparity. Describe how each of these themes define the salmon’s life cycle in no more than 2 sentences per term.
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The three key themes of Pacific salmon biology are anadromy, philopatry (homing), and semelparity. Describe how each of these themes define the salmon’s life cycle in no more than 2 sentences per term.
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- Discuss the habitat and life cycle of the Chinook Salmon.Is the following case study an r-strategist or a K-strategist? American toads practice explosive reproduction. During the first warm days in spring, both males and females migrate from forests and converge on ponds. Reproduction is quick, taking only a few days. Females lay hundreds of eggs in jelly-filled sacks along the sides of the pond or stream. As soon as the eggs are laid, males and females abruptly leave the pond. Offspring are left to develop, hatch, and grow on their own, maturing in about three months.Which of the following is NOT true about the salmon life cycle? Group of answer choices Salmon need cool, clean water in their fresh water habitat. Most salmon spend the majority of their life in the ocean When they spawn salmon prefer to lay their eggs in deep pools. Salmon return to spawn in the same stream where they were born.
- Which of the following is NOT true about the salmon life cycle? Group of answer choices a)Salmon return to spawn in the same stream where they were born. n)Salmon need cool, clean water in their fresh water habitat. c)When they spawn salmon prefer to lay their eggs in deep pools. d)Most salmon spend the majority of their life in the ocean PreviousNextYou are to set up a closed intensive hatchery for sea bass Lotes colcorifer and to close its life cycle. Propose a hatchery plan and elaborate on the requirements needed.Describe a two-year cycle in the life of an adult female gray whale by answering the specific questions below. Where do they mate and give birth? How often do they give birth? Where do they spend the non-breeding season? (Note this is also where they eat because they don’t typically feed during migration or on their breeding waters.) When do they migrate south along the Oregon Coast? When do they migrate north along the Oregon Coast
- In 1-2 sentences for each ecological change and in your own words, explain any two of the four ways the resulting ecological changes have affected salmon populations.Write the definition of the following terms: 1. Semelparous life history 2. Iterous species 3. Senescence 4. Antagonistic pleiotropy 5. Carrying capacityThis is a question NOT a writing assignment Summarize the case of the Atlantic cod. In your response, specifically address the following points: What method is most commonly used to extract cod? What are the environmental consequences of this method? What is the evidence that cod are being overfished? What remedies have governments enacted to help restore cod populations?
- You are studying the effect that the commonly used agricultural pesticide "Pestkill" that has been found in bodies of water has on the survival rate of eggs of dragonflies. How will you label your X and Y axes? Check all that apply. Pestkill concentration (mg)" as Y axis label, "percentage of eggs hatched in two weeks" as X axis label "Pestkill" as X axis label, "number of eggs" on Y axis "Pestkill" as Y axis label, "number of eggs" on X axis "Pestkill concentration (mg)" as X axis label, "percentage of eggs hatched in two weeks" as Y axis labelYou are studying the effect that the commonly used agricultural pesticide "Pestkill" that has been found in bodies of water has on the survival rate of eggs of dragonflies. How will you label your X and Y axes? Check all that apply. A "Pestkill concentration (mg)" as X axis label, "percentage of eggs hatched in two weeks" as Y axis label B "Pestkill" as X axis label, "number of eggs" on Y axis C "Pestkill concentration (mg)" as Y axis label, "percentage of eggs hatched in two weeks" as X axis label D "Pestkill" as Y axis label, "number of eggs" on X axisWhich of the following most accurately describes the life history for organisms such as sea urchins, who release hundreds or even thousands of eggs to be fertilized in the open ocean? combination of r-selected and K-selected r-selected K-selected