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8 Cards in this Set
- Front
- Back
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American eels
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-elongate, slimy and bony
-Small scales not visible until 3rd year -Distributed throughout Bay and tributaries into fresh water |
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Historically..
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-in the bay, primarily used for crab bait
-commonly exported to Europe |
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Bay eel fishery
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-1 to 3 million dollar fishery
-most chesapeake eels are now exported to europe and asia |
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Eel boat- "buck fever"
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-Rock Hall is one of the last fishing towns on marylands chesapeake bay
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Razor clams
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like buffalo wings for eels.
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Eel life history
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-no details on spawning area, eggs, larvae
-spawn in sargasso sea near bermuda -all come from same genetic stock-panmictic- and coverage in sargasso to spawn |
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more life history
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-eels from the mediterranean also spawn from this area
-eggs hatch into leptocephali-flat, leaf like planktonic -drift for a year and metamorphose into glass eels or elvers -glass eels migrate into freshwater and take on yellow green pigmentation "yellow eel" most on life history -eels may take up to 25 years to metamorphose into mature silver eels.. females up to 5 feet long -at maturity they migrate back to sargasso sea where spawning is believed to occur |
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spawning info
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-differences in distribution based on gender
-males more southern and in mouths of estuaries -femaels more northern and inland freshwater -probably related to population pressures.. eels convert to males when density is high and competition is strong -at low densities with low competition they convert to females. |
