Nosso grupo organiza mais de 3.000 Séries de conferências Eventos todos os anos nos EUA, Europa e outros países. Ásia com o apoio de mais 1.000 Sociedades e publica mais de 700 Acesso aberto Periódicos que contém mais de 50.000 personalidades eminentes, cientistas de renome como membros do conselho editorial.

Periódicos de acesso aberto ganhando mais leitores e citações
700 periódicos e 15 milhões de leitores Cada periódico está obtendo mais de 25.000 leitores

Indexado em
  • Índice Copérnico
  • Google Scholar
  • Sherpa Romeu
  • Abra o portão J
  • Chaves Acadêmicas
  • Biblioteca de Periódicos Eletrônicos
  • RefSeek
  • Diretório de indexação de periódicos de pesquisa (DRJI)
  • Universidade Hamdard
  • EBSCO AZ
  • OCLC – WorldCat
  • Acadêmico
  • Catálogo online SWB
  • Biblioteca Virtual de Biologia (vifabio)
  • Publons
  • Euro Pub
  • Universidade de Cardife
Compartilhe esta página

Abstrato

Sound Production (Bioacoustic) and Behaviour of Male Fish-Black Tilapia (Oreochromis mossambicus) Against Salinity Changes

Pujiyati S, Hestirianoto T, Harahap MS and Lubis MZ

Sound production of male fish-black Tilapia (Oreochromis mossambicus) used bioacoustic method where this method can be analyze behavior and characteristics of the sound production bubbles of tilapia fish swimming in freshwaters with different salinity. Research activities conducted in June 2013, fish were reared in our Institute’s laboratory (Marine Acoustic) as much as 65 males fish-black Tilapia (Oreochromis mossambicus). Sounds were recorded with a High Tech SQ 03 hydrophone (sensitivity -162 dB re 1 VμPa-1 @20°C, frequency response within ± 1 dB from 7 Hz to 22 kHz) placed just above the rim of a territorial in aquaria with connected to sea phone sensor (Dolphin Ear), with recording software is Wavelab 6, and analysis software of Source Level, and Power Spectral Density (PSD) is Matlab R2008 b. Source level (SL) value is highest on first day after adding saline to 39.11 dB, while the lowest values were also in first day after adding salt levels are 38.72 dB, it clearly proves that the addition of salt levels can affect the value of source level (SL). Highest of PSD in after adding salinity first day with -39.03 dB/Hz, and the lowest value of the PSD which in adding to the salt levels in second day is -49.04 dB/Hz. The results shown prove the effect of salinity on the value of the PSD and also SL. Addition of salt levels greatly affect the value of the intensity, frequency, source level (SL), and power spectral density (PSD) of male fish-black Tilapia (Oreochromis mossambicus).