Mangroves as nurseries: Shrimp populations in mangrove and non-mangrove habitats
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A total of 4845 penaeids belonging to nine species—Metapenaeus anchistus, M. ensis, M. moyebi, M. philippinensis, Penaeus merguiensis, P. monodon, P. semisulcatus, P. latisulcatus and Metapenaeopsis palmensis—were collected by pocket seine monthly over 13 months from mangrove and non-mangrove sites in Guimaras, Philippines. The restricted distribution of the three dominant species—M. ensisandP. merguiensisto the brackish water riverine mangrove, andM. anchistusto the high-salinity island mangrove and tidal flat—is probably related to different salinity and substrate preferences. Abundance and size composition of the major species suggest a strong nursery role for the riverine mangrove (high juvenile densities, relatively small sizes year-round), limited nursery use of the island mangrove (fewer shrimps, larger size ranges, presence of maturing females) and a non-nursery use (e.g. foraging) in the tidal flat. Penaeid recruitment to the river had two peaks in November and May when the average salinity was ∼20 (Practical Salinity Scale) and water temperatures were high (30–31 °C). The spatio-temporal pattern of penaeid species in Guimaras shows partitioning across habitats and seasonal recruitment influenced by physical and biological factors.
CitationPrimavera, J. H. (1998). Mangroves as nurseries: Shrimp populations in mangrove and non-mangrove habitats.
Mangrove swamps; Marine crustaceans; Nursery grounds; Estuaries; Juveniles; Recruitment; Metapenaeus anchistus; Metapenaeus ensis; Metapenaeus moyebi; Metapenaeus philippinensis; Penaeus latisulcatus; Penaeus merguiensis; Penaeus monodon; Penaeus palmensis; Penaeus semisulcatus; Philippines, Panay I., Iloilo, Guimaras I.; Philippines; Banana prawn; Giant tiger prawn; Greasyback shrimp; Mayebi shrimp; Western king prawn; Penaeidae; Prawns and shrimps
This study was partially funded by the Department of Agriculture Fisheries Sector Program and the Philippine Council for Aquatic and Marine Research and Development. Thanks are due to the following: J. Lebata and G. Unlayao for field and laboratory assistance; W. Dall and D. Vance of CSIRO and W. L. Long of QDPI, Australia for help in taxonomy; M. A. R. Juinio-Meñez of the U.P. Marine Science Institute, T. Bagarinao of the SEAFDEC Aquaculture Department, and W. Yap for constructive comments; E. Ledesma for preparing the figures; and L. Espada for the statistical analyses.
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BookFD Apud, PL Torres Jr. & JH Primavera - 1983 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 5The manual provides information on the culture of shrimps and prawns. Considerations regarding farm sites, pond specifications, pond ecosystems and differences between prawn and milkfish culture are examined. Seed supply, farm management practices and economic aspects are detailed.
Size and diel differences in activity patterns of Metapenaeus ensis, Penaeus latisulcatus and P. merguiensis JH Primavera & MJHL Lebata -
Marine and Freshwater Behaviour and Physiology, 2000 - Taylor & FrancisThe nursery function of mangroves as shelter has been postulated to explain the positive correlation between shrimp catches and mangrove area. This study was undertaken to document shelter use and other activities in mangrove‐associated penaeids and to determine diel and size differences relating to these activities. Juvenile Metapenaeus ensis, Penaeus latisulcatus and P. merguiensis collected from mangrove areas in Guimaras, central Philippines and stocked individually in glass tanks (= replicates) provided with artificial shelters and sand substrate were observed every hour for 25 h. Size classes tested were very small (1–5.9 mm carapace length); small (6–10.9mm CL); medium (11–15.9mm CL); large (16–20.9mm CL); and very large (21–25.9 mm CL). Due to limited juvenile supply, only 3 sizes were tested for each species: P. merguiensis (very small to medium), M. ensis (small to large) and P. latisulcatus (medium to very large) with 5 replicate animals (one per tank) per size. Juvenile M. ensis and P. latisulcatus showed a strong diel periodicity of daytime burial and nocturnal activity. In contrast, P. merguiensis showed active swimming and feeding throughout the day and night. Very small to small P. merguiensis were observed on the shelters, but burying was exhibited only by a few medium‐sized juveniles. This shelter use is consistent with observations of small P. merguiensis entering the mangrove forest (where roots, twigs, etc. contribute to structural complexity) on the flood tide and concentrating in the shallow, turbid waters of adjoining creeks during ebb tide and slack water.
Distribution pattern of shrimps and fish among Avicennia and Rhizophora microhabitats in the Pagbilao mangroves, Philippines P Rönnbäck, M Troell, N Kautsky & JH Primavera -
Estuarine, Coastal and Shelf Science, 1999 - ElsevierFor sustainable management of mangrove ecosystems, there is a pressing need to increase our knowledge of fish and invertebrates associated with this system. This study sampled microhabitats (89–258 m2) inside the mangrove forest at Pagbilao, the Philippines, on two consecutive spring tides using stake nets. Distribution patterns of shrimps and fish were compared among four microhabitats that differed in dominant mangrove species (Avicennia marina, A. officinalis or Rhizophora apiculata), structural complexity of the root system, and proximity to open water habitat. A 5 to 6-year-old replanted Rhizophora microhabitat was also sampled to study faunal recolonization following replantation. The mean (±SE) density of the shrimp community was 1·5±0·2 shrimps m−2, dominated by Palaemonidae, followed by Acetes sp., Penaeus merguiensis and Metapenaeus ensis . The highest shrimp density was observed in the replanted Rhizophora habitat, which also had the highest structural complexity. The mean (±SE) density and biomass of the fish community was 5·1±2·0 fish m−2and 10·4±3·3 g m−2, respectively, dominated by Ambassis kopsi, A. urotaenia and Atherinomorus balabacensis. The fish community preferred the pneumatophore (Avicennia) microhabitats to the prop root (Rhizophora) habitats. Highest fish abundance and biomass were observed in the most inland habitat, which also lacked larger (total length >100 mm) carnivorous fish. The results demonstrate the extensive use of intertidal mangrove forests by vagile fauna, as well as the successful recolonization by shrimps and fish of replanted Rhizophora habitat. The role of mangroves as predation refuges, based on the distribution pattern of shrimps and fish, is discussed. Sampling strategies in mangrove intertidal habitat are also outlined.