Yvonne J. Sadovy de Mitcheson1.2, Martha C. Prada Triana3, James O. Azueta4 and Kenyon C. Lindeman5 . Therefore, fishing the spawning aggregation removes not only the current generation, but also the next generation. However, four of… The Grouper Moon Project is a conservation science partnership between Reef Environmental Education Foundation (REEF) and the Cayman Islands Department of Environment (DoE) with scientists from Scripps Institution of Oceanography at UC San Diego and Oregon State University, aimed at studying Nassau grouper (Epinephelus striatus) - a social and ecological corner stone of Caribbean's coral reefs. The fisher y. Unfortunately, this strategy for reproducing has been the downfall of Nassau grouper populations throughout much of the Caribbean. During spawning, Nassau grouper aggregate in very high … The majority of Nassau groupers that spawn here are atoll resident. Spawning takes place at specific aggregation sites during the week of a full moon each year, giving the project its ‘Grouper Moon’ name. Often, the grouper are caught before they have a chance to reproduce. Subsequently other aggrega- tions have been reported at different spawning sites 2 However, it is not known if the site currently sustains spawning Nassau grouper. Then, in 2001 and 2002 the rediscovery of a traditional Nassau grouper spawning site in Little Cayman resulted in approximately 4,000 fish being caught. Project Overview The Nassau grouper used to be common on Caribbean coral reefs and was once considered the most commercially important reef fish species in the region. The fish congregated near the edge of deep water and about one‐third were in an unusual color pattern—dark above and light below with some of the usual head markings reversed. Spawning aggregations of the Nassau grouper, Epinephelus striatus, occurring at the southern end of Long Island were investigated during the winters of 1987–1988 and 1988–1989. Pok Fu Lam Road, Hong Kong, SAR Nassau groupers reproduce in only a few special places around the full moons of the winter months each year. Below is a re-count by videographer Joe Miller of the video survey conducted by Green Reef. Groupers are protogynous hermaphrodites. The Nassau Grouper (Epinephelus striatus) is a large fish that inhabits our reefs and is especially common in the waters of Saba.As is typical of groupers, it has a robust, elongated body, rounded fins and big lips. The annual Nassau Grouper Closed Season begins December 1, 2017 and runs until February 28, 2018. To this end we used mobile hydroacoustic surveys to estimate the density, spatial extent, and total abundance of a Nassau grouper spawning aggregation at Little Cayman Island, Cayman Islands, BWI. It is a domino effect that has led to today's endangered status for the Nassau Grouper. The Nassau Grouper Epinephelus striatus is a Caribbean coral reef fish that displays such spawning aggregations, which have been overfished to the point of threatening the species. After spawning as a female for one or more years, the grouper changes sex, functioning as a male during future spawning events. It is an important member of estuarine, mangrove, seagrass and reef communities throughout the … The Nassau grouper—a fish known for its spectacular spawning aggregations in and around the Caribbean Sea—is now a “Critically Endangered” species, according to a new assessment by the IUCN (International Union for Conservation of Nature) that was recently published and The Nassau Grouper (Epinephelus striatus), is listed as ‘Vulnerable’ (IUCN, 2006). Overfishing of tropical grouper- and snapper-spawning aggregations is a globally pervasive problem, but evidence is elusive that recovery can occur following stock collapse. An illegally hooked Nassau grouper sits suspended in the water alongside a monitoring diver at Northeast Point, Glover Atoll’s spawning aggregation … 1 . The Declaration produced from the Miami meeting was then adopted during the 2018 meeting. 1), one can An understanding of temporal patterns of migration and spatial connectivity between home ranges and spawning sites is necessary for effective management of species that form transient spawning aggregations. A spawning aggregation, estimated to consist of 30,000 to 100,000 Nassau groupers, occurred during the third week of January 1971 off Cat Cay in the Bahamas. The Nassau grouper (Epinephelus striatus) is an emblematic fish in the Caribbean, but today it is listed as “endangered” on the IUCN Red List. Fishing, mainly at the spawning … A proprietary method for timing control of the spawning event, has been in development for years, and this method utilizes no hormonal injections or invasive stimuli. Tropic Seafood is preparing for a potential Nassau grouper spawning event towards the end of June. The Cayman Islands used to be home to five Nassau grouper spawning sites. This Spawning Aggregation Working Group met in Miami in 2013 and 2018. Tiger grouper meets Nassau grouper. Nassau grouper fisheries and monitoring activities in Belize. Around the full moon at the beginning of the year, they gather in thousands to reproduce at a special site on the West end of Little Cayman, Cayman Islands. Nassau grouper spawning aggregation size is a histo r-ical minimum. Regional Fish Spawning Aggregation Fishery Management Plan: Focus on . Once fishermen know where these spawning sites are, they can wipe out regional Nassau grouper populations within a decade or less, leading Nassau grouper to be considered an endangered species internationally. Smith (1972) was the first to document character- istics of a spawning aggregation of Nassau grouper at Cat Bay, Bahamas. If this and other nearby spawn-ing sites do exist (denoted by a cross ( ) in Fig. 1958) and during March to April in Jamaica (Thompson & Munro 1983). In the moonlight, huge numbers of the grouper gather together to mate in a mass spawning aggregation. Furthermore, all resident Nassau grouper visit their local aggregation every year. This may continue for several days. 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