Chesapeake Bay: An Introduction to an Ecosystem Section 4: Communities II-1E4: Swimmers

1. Chesapeake Bay: An Introduction to an Ecosystem Section 4: Communities II-1E4: Swimmers View this quiz as a slide show from “the beginning” During the slide show, you can right click on any slide and choose pointer options then pen or highlighter to write on any slide. But you will need to right click & choose pointer options then arrow before you can click on any of the navigation links again. Click to Start

2. II-1E4-1 Identify the fish A B D. Bluefish C. Striped Killifish A. Bay Anchovy B. Weakfish E. Striped Bass Phytoplankton C D E Bluefish Striped Killifish Bay Anchovy Weakfish Striped Bass Hint – word bank Answer Next Slide

3. II-1E4-2 Swimmers comprise the _____________ community whose organisms can control and direct their movements. This group includes fish, some crustaceans and other invertebrates. nekton Starts with n Hint Answer Next Slide

4. II-1E4-3 Approximately ______ species of fish can be found in the Chesapeake Bay. 350 350 475 538 780 Hint – multiple choice Answer Next Slide

5. II-1E4-4 True or False: The resident fish in the Bay tend to be smaller in size and do not travel the long distances that migratory species do. True No hint Hint Answer Next Slide

6. II-1E4-5 Smaller resident species, such as killifish, normally occur in shallow water where they feed on a variety of ____________. invertebrates No hint Hint Answer Next Slide

7. II-1E4-6 What is the most abundant fish in the Bay? bay anchovy Initials b.a. Hint Answer Next Slide

8. II-1E4-7 Bay anchovies feed primarily upon _____________. Adult anchovies also may consume _____________, ____________ and some _______________. zooplankton larval fish crab larvae benthic species Initials z, l.f., c.l., & b.s. Hint Answer Next Slide

9. II-1E4-8 In turn, the bay anchovy is a major food source for predatory fish like _____________, _____________ and ________________, as well as some birds and mammals. striped bass bluefish weakfish No hint Hint Answer Next Slide

10. II-1E4-9 Migratory fish fall into two categories: ______________, which spawn in the Bay or its tributaries, and ___________ fish, which spawn in the ocean. anadromous catadromous Makes me think of mice & what eats them Hint Answer Next Slide

11. II-1E4-10 Anadromous fish migrate varying distances to spawn in freshwater and can even be considered Bay residents. For instance, during the spawning season, ______________________ travel short distances from the brackish water of the middle Bay to freshwater areas of the upper Bay or tributaries. yellow and white perch 2 colors of a fish that reminds me of a bird group Hint Answer Next Slide

12. II-1E4-11 _______________ also spawn in the tidal freshwater areas of the Bay and major tributaries. Some remain in the Chesapeake to feed while others migrate to ocean waters. Striped bass S. B. Hint Answer Next Slide

13. II-1E4-12 herring Shad ____________ and ____________ are truly anadromous, traveling from the ocean to freshwater to spawn and returning to the ocean to feed. S & h Hint Answer Next Slide

14. II-1E4-13 ______________ are the only catadromous species in the Bay. Eels E. Hint Answer Next Slide

15. II-1E4-14 Although they live in the Bay for long periods, eels eventually migrate to the __________________ in the central North Atlantic to spawn Sargasso Sea S. S. Hint Answer Next Slide

16. II-1E4-15 Name five that fish utilize the Bay strictly for feeding, journeying into the Bay while still in their larval stage to take advantage of the rich supply of food. Croaker Drum Menhaden Weakfish Spot C, D, M, W & S Hint Answer Next Slide

17. II-1E4-16 The abundance of ________________ supports a commercial fishing industry and provides food for predatory fish and birds. menhaden Not women Hint Answer Next Slide

18. II-1E4-17 ___________ enter the Bay only as young adults or mature fish. Bluefish A color fish Hint Answer Next Slide

19. II-1E4-18 Besides fish, _________________ and _______________ may be part of the nekton community. crustaceans invertebrates No hint Hint Answer Next Slide

20. II-1E4-19 Name five larger animals that enter the Bay though two of the five only occasionally. Sharks Rays sea turtles marine dolphins whales No hint Hint Answer Next Slide

21. II-1E4-20 Why is the blue crab is difficult to place in any one community? because it requires a variety of aquatic habitats, from the mouth of the Bay to fresher rivers and creeks, in order to complete its life cycle. Throughout the year, crabs may burrow into the Bay bottom, shed and mate in shallow waters and beds of bay grasses or swim freely in open water. No hint Hint Answer Next Slide

22. II-1E4-21 The first life stage of a blue crab, called the ___________, is microscopic and lives a planktonic free-floating existence. zoea Starts with Z Hint Answer Next Slide

23. II-1E4-22 After several molts, the zoea reaches its second larval stage: the ___________. Another molt and a tiny crab form is apparent. megalops No hint Hint Answer Next Slide

24. II-1E4-23 How do crabs use the bottom of the Bay? Both juvenile and adult blue crabs forage on the bottom and hibernate there through the winter. No hint Hint Answer Next Slide

25. II-1E4-24 Describe the movement & distribution of crabs though the seasons. In spring, the crab quickly begins migrating from the southern part of the Chesapeake to tidal rivers and northern portions of the Bay. During the rest of the year, adult blue crabs are dispersed throughout the Bay, swimming considerable distances using their powerful paddle-like back fins. No hint Hint Answer Next Slide

26. II-1E4-25 Label the life stages of a blue crab C A B C. Immature crab B. Megalops A. Zoea Immature crab Megalops Zoea Hint – word bank Answer Last Slide