ISSN: 2157-7617

Revista de Ciencias de la Tierra y Cambio Climático

Acceso abierto

Nuestro grupo organiza más de 3000 Series de conferencias Eventos cada año en EE. UU., Europa y América. Asia con el apoyo de 1.000 sociedades científicas más y publica más de 700 Acceso abierto Revistas que contienen más de 50.000 personalidades eminentes, científicos de renombre como miembros del consejo editorial.

Revistas de acceso abierto que ganan más lectores y citas
700 revistas y 15 000 000 de lectores Cada revista obtiene más de 25 000 lectores

Indexado en
  • Índice de fuentes CAS (CASSI)
  • Índice Copérnico
  • Google Académico
  • sherpa romeo
  • Acceso en Línea a la Investigación en Medio Ambiente (OARE)
  • Abrir puerta J
  • Revista GenámicaBuscar
  • TOC de revistas
  • Directorio de publicaciones periódicas de Ulrich
  • Acceso a la Investigación Global en Línea en Agricultura (AGORA)
  • Centro Internacional de Agricultura y Biociencias (CABI)
  • Búsqueda de referencia
  • Universidad Hamdard
  • EBSCO AZ
  • OCLC-WorldCat
  • Invocaciones de proquest
  • Catálogo en línea SWB
  • publones
  • Pub Europeo
  • ICMJE
Comparte esta página

Abstracto

Electrode Placement and Electroejaculation of Blue Swimmer Crab, Portunus pelagicus (linnaeus)

P. Soundarapandian, D. Varadharajan and T. Anand

Many workers emphasized the usefulness of electroejaculation technique in artificial insemination studies for hybridization and selective breeding programmes in commercially important decapods. Such techniques are also used to improve the seed production. Similar technique is very much lacking in crabs in general and P. pelagicus in particular. So that electrical stimulation on spermatophore expulsion is studied in P. pelagicus. Among six positions the bilateral ejaculation (extruding spermatophores in both sides) was occurred only in positions I & VI. In all three trials the animals were bilaterally ejaculated 100% in position VI. However in position I the bilateral ejaculation was 66.66%. In other four positions (II, III, IV and V) the ejaculation was happened unilaterally (extruding spermatophores in one side) especially in probe attachment side in all three trials. In positions II & IV all the animals were extruded unilaterally in all the three trials whereas in positions III & V the unilateral ejaculation was 66.66% & 83.33% in trial I, 83.33% & 66.66% in trials II & III respectively. The average volts and seconds required for extrusion of spermatophores was ranged from 5.75 to 7.75 volts and 3.83 to 7.70 seconds respectively. Spermatophore weight was ranged from 33.0 to 105.61 mg.