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|a Age and Growth of Four Everglades Fishes Using Otolith Techniques |h [electronic resource] |b Report SFRC-83/03 |y English. |
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|a Homestead ; |a Florida : |b National Park Service, U.S. Department of the Interior, |c 1983-05. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a The Everglades region of southern Florida is a large, subtropical, freshwater marsh prone to periodic droughts. Usually about 70% of the annual rainfall occurs between June and October (Leach -- et al., 1979), and water levels increase during this period. The marsh gradually
dries until the next rainy season begins again the following spring. Small fishes of the families Cyprinodontidae and Poeciliidae are an important link in the Everglades food web (Kushlan, 1976), but information about their biology in southern Florida is limited. The effect
of seasonally fluctuating water levels on growth, the length of time that individuals remain in the population, the age at which they become available to predators, and the age at maturation must be determined to accurately assess the role of these fishes in the Everglades
ecosystem. The first step to answer these questions is age determination. Most cyprinodontids and poeciliids reproduce during much of the year in the Everglades (Loftus and Kushlan, pers. comm.), and the results of age and growth determination by length-frequency analysis have been generally unsatisfactory. The best way to determine the age of these small fishes appears to be by the counting of daily growth increments in the otoliths. |
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|a Electronic reproduction. |c Florida International University, |c South Florida Natural Resource Center, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|a South Florida Natural Resource Center. |
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|a SuDoc number: I 29.95: SFRC- 83/03 |
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|a Everglades National Park (Fla.). |
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|a South Florida Natural Resources Center/South Florida Research Center, Everglades National Park. |
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|a Everglades Digital Library: Reclaiming the Everglades. |
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|a South Florida Collection. |
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|a Federal Documents Collection. |
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|a dpSobek |c Everglades Digital Library: Reclaiming the Everglades |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI83218750/00001 |y Click here for full text |
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|a http://dpanther.fiu.edu/sobek/content/FI/83/21/87/50/00001/FI83218750thm.jpg |
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|a Everglades Digital Library: Reclaiming the Everglades |
