First report of ten grouper species (Serranidae: Epinephelinae) from the West Bengal coast, along the east coast of India

108-117Present paper reports 10 groupers (family Serranidae) from West Bengal coast on the east coast of India for the first time. These 10 species are Cephalopholis formosa, Epinephelus areolatus, E. bleekeri, E. caeruleopunctatus, E. erythrurus, E. fasciatus, E. longispinis, E. magniscuttis, E. radiatus, E. sexfasciatus. This paper provides comprehensive morphometric characters, description, photography and distribution of these 10 groupers

Synthesis and characterization of polymer composite ferroelectric materials

Polymer-ceramic composites combine superior properties of both polymer and ceramics which result in far better performance than those of the constituent materials. Polymers are flexible, easy to fabricate and superior in dielectric break down strength. On the other hand, ferroelectric ceramics possess high dielectric permittivity but with poor mechanical properties and lower dielectric breakdown strength. By integrating high dielectric permittivity ceramic powder with superior dielectric strength of the polymer, one can develop a composite with high dielectric permittivity and high breakdown strength. This type of composites has high capability of energy storage and can be used in capacitors and energy storage device. The Ba1-xSrxZr0.1T0.9O3 Powders were prepared by conventional solid-state reaction route, Ba replaced by Sr in A site of BaZr0.1Ti0.9O3 ceramic in different value of x(i.e x=0.0,0.1,0.2,0.3). Preliminary X-ray Structural analysis for Ba1-xSrxZr0.1T0.9O3 powders suggested the formation of single-phase compound in tetragonal crystal system. Then the polymer composite ferroelectric material is prepared by using polyvinyl alcohol (PVA) as a polymer matrix. The polymer composite XRD pattern as same as ferroelectric ceramic patterns, it may be the ceramic powder dominating over the polymer. This may be due to the increase of amorphous nature of PVA with the addition of ferroelectric ceramic. The SEM micrograph shows that the BSZT particle distribution is homogenous with no porous in the PVA matrix. Detailed studies of dielectric and impedance properties of the material in a wide range of frequency (100Hz-1MHz) and temperatures (30-1200C) shows that these properties are strongly temperature and frequency dependen

First record of Muraenichthys gymnopterus (Ophichthidae: Myrophinae) from east coast of India, Bay of Bengal

283-285Muraenichthys gymnopterus (Bleeker, 1853) is reported for the first time from seven specimens collected from the Shankarpur fishing harbour (West Bengal), Visakhapatnam fishing harbour (Andhra Pradesh), and Chilika lagoon (Odisha). This paper reports Muraenichthys gymnopterus for the first time from the east coast of India as well as from Chilika lagoon

New record of five ornamental triggerfishes (Tetraodontiformes: Balistidae) from West Bengal coast, India

The present paper reports five ornamental triggerfishes (Tetraodontiformes: Balistidae) for the first time from the coastal waters of West Bengal. The five species namely, Balistapus undulatus (Park, 1797) Balistoides viridescens (Bloch & Schneider, 1801), Canthidermis maculata (Bloch, 1786), Odonus niger (Ruppell, 1836) and Sufflamen fraenatum (Latreille, 1804) are reported here for the first time from West Bengal coast with detailed morphometry

First report of ten grouper species (Serranidae: Epinephelinae) from the West Bengal coast, along the east coast of India

Present paper reports 10 groupers (family Serranidae) from West Bengal coast on the east coast of India for the first time. These 10 species are Cephalopholis formosa, Epinephelus areolatus, E. bleekeri, E. caeruleopunctatus, E. erythrurus, E. fasciatus, E. longispinis, E. magniscuttis, E. radiatus, E. sexfasciatus. This paper provides comprehensive morphometric characters, description, photography and distribution of these 10 groupers

First record of Shorthead fang blenny, Petroscirtes breviceps (Valenciennes, 1836), from Chilika lagoon, India.

1692-1694Shorthead fang blenny, Petroscirtes breviceps (Valenciennes, 1836), a species of the family Blenniidae (Order Blenniiformes) is reported here as first record from Chilika Lagoon, Odisha, India based on 20 specimens collected from Chilika lagoon. This also forms the first record from coastal waters of Odisha