Now showing items 1-7 of 7

    • Conference paper

      Fisheries biology of milkfish (Chanos chanos Forskal) 

      LMB Garcia - In H Tanaka, KR Uwate, JV Juario, CS Lee & R Foscarini (Eds.), Proceedings of the Regional Workshop on Milkfish Culture Development in the South Pacific, 21-25 November 1988, Tarawa, Kiribati, 1990 - Food and Agriculture Organization of the United Nations, South Pacific Aquaculture Development Project
      Milkfish (Chanos chanos Forskal) is one of the most important food fish species in the world. In Indonesia, Taiwan and the Philippines, more than a quarter of a million tonnes of milkfish are harvested annually in brackish ponds, contributing roughly 60% of the total fish production from aquaculture in Southeast Asia. This tremendous level of production from a single fish commodity is projected to further increase in the coming years to meet the dietary protein needs of an ever-growing population in Southeast Asia. To address vital research gaps afflicting the milkfish industry, research has correspondingly intensified over the past 15 years particularly in the Philippines, Taiwan and Hawaii. Results of such research projects have widespread application not only among Southeast Asian nations but also among many untapped areas in the Pacific, the Middle East, Africa and Central America where milkfish culture is feasible.

      A sound approach to initiate a milkfish aquaculture project is to have an adequate knowledge of the basic biology of this species. Several researchers have presented in great technical detail some of these biological aspects at numerous symposia (Juario et al., 1984, Lee, Gordon and Watanabe, 1986). This paper will therefore summarize in moderate detail some recent additional information on several aspects of milkfish biology: taxonomy, distribution, life history and habitat, food and feeding habits, growth, reproduction and tolerance to environmental conditions. Aside from increasing our understanding of milkfish, it is hoped that this short review will goad others to undertake further scientific research on many unknown aspects of the species, thus contributing to both the quality and the quantity of milkfish served on our dinner tables.
    • Article

      Identification of postlarvae of the genus Penaeus appearing in shore waters 

      H Motoh & P Buri - Researches on Crustacea, 1981 - Carcinological Society of Japan
      Diagnostic features for the identification of postlarval Penaeus found in the shore waters of the Philippines are described and categorized based on specimens caught from the wild and those hatched and reared in the laboratory.

      Differentiating features for postlarval Penaeus are given which include the relative length of the antennular flagellum, the shape of the rostrum and number of rostral teeth, the antennal spine, the spinules on the dorsal caina of the sixth abdominal segment, and chromatophore patterns.

      Postlarval Penaeus were classified into two species and two groups as follows: (1) P. monodon, larger in size with dense chromatophores, and the long inner antennular flagellum being more than 2.0 times the outer antennular flagellum; (2) P. semisulcatus, the inner flagellum being 1.6 to 2.0 times the outer antennular flagellum, the the absence of chromatophore on the middle portion of the telson and uropods; (3) P. merguiensis group, less pigmented, the inner flagellum being less than 1.6 times the outer flagellum and (4) P. japonicus group, a short rostum, presence of spinules on the dorsal carina of the sixth abdominal segment, and dense chromatophores. The determinations were confirmed by rearing experiments.
    • Article

      On a new species of Trachypenaeus (Crustacea, Decapoda: Penaeidae) from the Philippines, with notes on related species 

      MS Muthu & H Motoh - Researches on Crustacea, 1979 - Carcinological Society of Japan
      Trachypenaeus villaluzi a new species of penaeid prawn from the Philippines is described in detail and compared with the related species. The new species is characterized by the following features : Mastigobranchia are present on the 2nd and 3rd pereiopods, but absent on the first ; anterior plate of thelycum is deeply concave ; the lower margin of the distolateral projections of the petasma is concave. It is also suggested that Trachypenaeus asper Alcock Should be considered as a valid species instead of being treated as a synonym of T. curvirostris (Stimpson).
    • Book chapter

      Order Gonorynchiformes: Chanidae: Milkfish 

      T Bagarinao - In KE Carpenter & VH Niem (Eds.), FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 3. Batoid fishes, chimaeras and bony fishes part 1 (Elopidae to Linophrynidae), 1999 - Food and Agriculture Organization of the United Nations
    • Article

      Studies on the fungal diseases in crustaceans. I. Lagenidium scyllae sp. nov. isolated from cultivated ova and larvae of the mangrove crab (Scylla serrata) 

      BZ Bian, K Hatai, GL Po & S Egusa - Transactions of the Mycological Society of Japan, 1979 - Mycological Society of Japan
      Lagenidium scyllae , a marine mastigomycete from the ova and larvae of the mangrove crab, is described and illustrated as new. The fungus grew at a temperature range of 16-42 C, with an optimum at 22.5-31.8 C. It grew well in peptone-yeast-glucose (PYG) broth containing 2-3% NaCl. In PYG-sea water medium, it grew at a pH range of 5-11.
    • Article

      Studies on the penaeoid prawns of the Philippines 

      H Motoh & P Buri - Researches on Crustacea, 1984 - Carcinological Society of Japan
      Thirty-five species of penaeoid prawns, representing 9 genera in 3 families, have been found over a period of 5 years from 1976 to 1980 in the Philippine waters. Of these, 15 species have been recorded for the first time from the country.

      Keys for the identification of genera and species, and descriptions as well as illustrations of 35 species except for the illustration of Metapenaeus moyebi are provided.

      Twelve species out of the 35 species are commercially important. They are Metapenaeus anchistus, M. dalli as well as M. moyebi, M. ensis, Penaeus indicus, P. japonicus, P. latisulcatus, P. merguiensis, P. monodon, P. semisulcatus, Solenocera alticarinata, and S. melantho, of which P. monodon is the greatest because of its large size, abundant occurence of the fry and easier cultivation in the pond, and furthermore, other five Penaeus species are of great potential for an aquaculture in brackishwater fishponds.
    • Article

      Taxonomy and phylogeny of Nephroselmis clavistella sp. nov. (Nephroselmidophyceae, Chlorophyta) 

      DG Faria, A Kato, MR de la Peña & S Suda - Journal of Phycology, 2011 - Wiley-Blackwell
      Nephroselmis clavistella D. G. Faria et S. Suda sp. nov. is collected from coastal sand samples from the eastern and western coasts of Okinawa-jima Island, Japan. The description of the cultured strains is based on light and electron microscopic observations. The cultured strains are phylogenetically analyzed based on 18S rDNA sequences. The cells are remarkably right–left flattened and appear round or ellipse when viewed from their right or left side, and are ∼5.0 μm in diameter. The posterior flagellum curved around the cell body at rest. A single, parietal, crescent chloroplast is yellowish green and contains one conspicuous eyespot in its anterior-ventral edge near the short flagellum base. A pyrenoid with one starch sheath is located dorsal of the chloroplast. The cells are divided by transverse binary cell division, as is common in other species of this genus. The cell body is covered with five types of scales, and among them four scale types are similar to Nephroselmis rotunda. The fifth scale type is a distinctive spiny and club-shaped stellate scale with 10 spines, four of the 10 spines extended ∼150 nm and each are slightly curved with a hook at the end, whereas six spines are club-shaped blunt ended. This scale morphology, an important taxonomic characteristic, has never been described before for the genus Nephroselmis. The cell’s morphology is distinctive from previously described Nephroselmis species, and its unique scale characteristics led us to name this newly proposed species “clavistella,” meaning club star.