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Age and Growth of Four Everglades Fishes Using Otolith Techniques
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Permanent Link:
http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI83218750/00001
Material Information
Title:
Age and Growth of Four Everglades Fishes Using Otolith Techniques Report SFRC-83/03
Creator:
South Florida Natural Resources Center/South Florida Research Center, Everglades National Park
P. William Haake
John Mark Dean
Place of Publication:
Homestead
Florida
Publisher:
National Park Service, U.S. Department of the Interior
Publication Date:
1983-05
Subjects
Subjects / Keywords:
Fishes
Age determination
Otoliths
Everglades National Park (Fla.)
Notes
Abstract:
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. ( English )
Issuing Body:
SuDoc number: I 29.95: SFRC- 83/03
Record Information
Source Institution:
Florida International University
Holding Location:
South Florida Natural Resource Center
Rights Management:
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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Everglades Digital Library: Reclaiming the Everglades
South Florida Natural Resource Center
FIU Government Resources and Information Department
South Florida Collection
Federal Documents Collection
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Last updated January 2012 -
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