Open AccessPOND STUDIES ON GULF KILLIFISH ( Fundulus grandis ) MARICULTURE
Author(s) -
Trimble William C.,
Tatum Walter M.,
Styron Sherman A.
Publication year - 1981
Publication title -
journal of the world mariculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0735-0147
DOI - 10.1111/j.1749-7345.1981.tb00274.x
Subject(s) - killifish , biology , fundulus , hatching , mariculture , fishery , brackish water , juvenile , zoology , juvenile fish , aquaculture , fish <actinopterygii> , ecology , salinity
Investigations concerning spawning, hatching, and grow‐out of gulf killifish ( Fundulus grandis ) were conducted in 0.08‐ha, brackish‐water ponds at Alabama's Claude Peteet Mariculture Center during 1979. Adult gulf killifish stocked at 88,750 fish/ha and a 1:1 sex ratio in 3 spawning ponds deposited 499,777 eggs on 1,001 Spanish moss mats placed around pond margins between 1 March and 13 August. Rate of egg deposition was highest in March (4,103 eggs/day/pond) and lowest in July and August (36 eggs/day/pond). A total of 293,467 eggs and 416 mats transferred to 3 hatching ponds between 13 March and 8 May produced 219,921 juvenile killifish (75% survival) averaging 0.5 g at harvest on 6 June. Production and feed conversion in hatching ponds averaged 413.90 kg/ha and 1.9, respectively. Stocked on 6 June in 4 grow‐out ponds each at either 250,000 or 370,000 fish/ha and fed either 2 or 3 times daily, the juvenile gulf killifish reached marketable size (2.4 g and 57 mm total length) in 49 days. Production in grow‐out ponds averaged 658 kg/ha with 93% survival and 2.4 feed conversion. Analysis (2 × 2 factorial) of grow‐out data indicated no significant differences for effects of densities and feeding on mean weights of fish at harvest.