AQUACULTURE ILLUSTRATED by A.P
Lures and wild fish fry Item Type article Authors Surtida, Augusto P.; Ledesma, Edgar T. Download date 04/10/2021 03:58:38 Link to Item http://hdl.handle.net/1834/35057 AQUACULTURE ILLUSTRATED by a.p. surtida and e.t. ledesma THE PHILIPPINES RANKS AMONG THE WORLD’S LA R G E ST FISH PR O DUCER. AQUACULTURE CONSTITUT ES ABOUT 3 5 % OF TOTAL FISH PRODUCTION MAINLY FROM SHRIM PS, SEAWEEDS, MILKFISH AND TILAPIA . SHRIMP, TILAPIA, CARP, AND TO A CERTAIN EXTENT THE REST, PARTICULARLY OTHER FISH MILKFISH, HAVE WELL-DEVELOPED HATCHERY INDUS SPECIES, STILL DEPEND ON WILD-CAUGHT FRY TRIES THAT PROVIDE FRY O R FING ERLINGS TO WHOSE SUPPLY IS LIMITED AND SEASONAL GROW-OUT POND, CASE AND PEN OWNERS. MILKFISH HAS A WELL-DEVELOPED G ROW-OUT INDUSTRY, FRY GROUNDS ARE USUALLY SANDY BUT AS OF 1998, ONLY ONE COMMERCIAL HATCHERY IS BEACHES, RIVER MOUTHS, TIDAL CREEKS, ON RECORD. THE INDUSTRY STILL DEPENDS ON WILD-CAUGHT FRY... AND MANGROVE SWAMPS... AMONG CULTURED SPECIES THAT RELY ON WILD-CAUGHT F R Y A R E : GROUPER, SEABASS, M A P OF THE PHILIPPINES SHOWING MILKFISH MILKFISH, SN A PPER, SPADE FISH AND SIGANIDS. FRY GROUNDS: GROUPER FRY HAVE A CONTINUOUS DORSAL FIN. YOUNGER ONES MAY HAVE ELONGATED SECOND DORSAL AND PELVIC SPINES SIMILAR TO SNAPPERS. SEABASS FRY OF DIFFERENT STAGES: NOTE THE DORSAL HEAD STRIPE, LENGTH VARIES FROM 5-20m m ... LATE POST LARVAE MILKFISH FRY ARE 10 -17mm IN SNAPPER LARVAE HAVE AN ELONGATED LENGTH, IT IS ABOUT 2 - 3 WEEKS OLD FROM THE TIME OF SECOND DORSAL AND PELVIC SPINE.
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