Notre groupe organise plus de 3 000 séries de conférences Événements chaque année aux États-Unis, en Europe et en Europe. Asie avec le soutien de 1 000 autres Sociétés scientifiques et publie plus de 700 Open Access Revues qui contiennent plus de 50 000 personnalités éminentes, des scientifiques réputés en tant que membres du comité de rédaction.

Les revues en libre accès gagnent plus de lecteurs et de citations
700 revues et 15 000 000 de lecteurs Chaque revue attire plus de 25 000 lecteurs

Indexé dans
  • Index Copernic
  • Google Scholar
  • Sherpa Roméo
  • Ouvrir la porte J
  • Clés académiques
  • Bibliothèque de revues électroniques
  • Recherche de référence
  • Répertoire d’indexation des revues de recherche (DRJI)
  • Université Hamdard
  • EBSCO AZ
  • OCLC-WorldCat
  • Direction des chercheurs
  • Catalogue en ligne SWB
  • Bibliothèque virtuelle de biologie (vifabio)
  • Publons
  • Euro Pub
  • Université de Cardiff
Partager cette page

Abstrait

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).