Around this time, they migrate to “passes” at the mouths of large estuary systems to spawn. Observations of ovarian development have suggested that on the west coast of Florida, snook begin spawning in April. Spawning season Snook fingerlings need to be frequently size graded to reduce cannibalism in the culture system. By spawning large numbers of snook, the genetic diversity of the larvae was maximized, and fertilization and hatching rates improved. At the Mote project’s initiation, it was determined that collecting eggs from wild, naturally spawning fish would provide the best-quality eggs to develop larval and nursery culture techniques for stock enhancement. One of the common problems encountered in snook larval culture is poor egg quality. Several research teams have tried to raise snook since the 1970s, with varying degrees of success.
In 2003, more than 1,079 snook were collected, and 191 males and 64 females were strip spawned in the field. The average number of annual collection trips during 1996-2001 was seven. A total of 43 spawning attempts were conducted, compared to 26 attempts in 2002. Spawning attempts were conducted every other week in five-day sampling regimes from April 18 through August 29, 2003. The first viable spawn occurred on May 18, 2003. Mote staff initiated collections of wild adult snook in April 2003 and continued to collect fish every two weeks throughout the summer months. In order to provide maximum genetic diversity and produce high-quality juvenile snook, wild fish are collected, spawned, and released during their normal spawning cycles. The large-scale release of any species of cultured fish requires careful attention to the genetics, culture methods, and health of the released fish. The snook produced through this program are used by Mote’s Center for Fisheries Enhance-ment, in partnership with the Florida Fish and Wildlife Conservation Commission, in research to evaluate the effectiveness of stock enhancement as a tool to increase local snook populations. Mote’s Center for Aquaculture Research and Development is also developing culture technology for snook. Mote Marine Laboratory in Sarasota, Florida, has spawned snook for stock enhancement research since 1996. Increased fishing pressure on snook in Florida has depleted populations of the popular recreational fish. Snook ( Centropomus undecimalis) are high-value sportfish indigenous to coastal waters from Florida, USA, to Brazil. Fecund species has very low larvae and fry survival Snook collected in Sarasota Bay during moon phases from one day before to three days after new and full moons were held in net pens, strip spawned, and released.
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