Effects of a luteinizing hormone-releasing hormone analogue (LHRHa) on the reproductive performance of spotted sand bass Paralabrax maculatofasciatus (Percoidei: Serranidae)

Hormonal induction of spotted sand bass Paralabrax maculatofasciatus, was investigated in order to induce and synchronize spawning. Three experiments were conducted using wild fish captured in the Gulf of California: 1) LHRHa (luteinizing hormone-releasing hormone analogue) induced spawning with con...

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Autores principales: Alcántar-Vázquez,Juan Pablo, Pliego-Cortés,Hugo Skyol, Dumas,Silvie, Peña-Martínez,Renato, Rosales-Velázquez,Martín, Pintos-Terán,Pablo
Lenguaje:English
Publicado: Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2016
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2016000300007
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spelling oai:scielo:S0718-560X20160003000072016-10-03Effects of a luteinizing hormone-releasing hormone analogue (LHRHa) on the reproductive performance of spotted sand bass Paralabrax maculatofasciatus (Percoidei: Serranidae)Alcántar-Vázquez,Juan PabloPliego-Cortés,Hugo SkyolDumas,SilviePeña-Martínez,RenatoRosales-Velázquez,MartínPintos-Terán,Pablo Paralabrax maculatofasciatus LHRHa spawn survival sperm cell density sperm motility Hormonal induction of spotted sand bass Paralabrax maculatofasciatus, was investigated in order to induce and synchronize spawning. Three experiments were conducted using wild fish captured in the Gulf of California: 1) LHRHa (luteinizing hormone-releasing hormone analogue) induced spawning with concentrations of 25, 50, 100 &#956;g kg-1 and saline solution, 2) Effects of LHRHa on motility and sperm density, and 3) Induction and incubation of spawns obtained using LHRHa. In experiments 2 and 3 using concentrations of 12.5, 25, 50 &#956;g kg-1 and saline solution. In experiment 1, a higher spawning ratio was observed for the concentration of 25 &#956;g kg-1; however, no significant differences were observed in the proportion of floating (viable) eggs. In experiment 2, significant differences (P < 0.05) were observed in duration of sperm motility and sperm density, with highest duration registered for wild fish (control group) and highest density registered for laboratory control group and concentration of 12.5 &#956;g kg-1. In experiment 3, significant differences (P < 0.05) were observed between treatments in volume of spawned eggs and proportion of fertilized eggs, with higher values shown for the concentrations of 50 and 12.5 &#956;g kg-1, respectively. Survival at hatching and proportion of live yolk-sac larvae were significantly higher (P < 0.05) for the concentration of 12.5 &#956;g kg-1. LHRHa was effective in inducing and synchronizing the spawning of spotted sand bass, a process which will be used for massive egg production.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.44 n.3 20162016-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2016000300007en
institution Scielo Chile
collection Scielo Chile
language English
topic Paralabrax maculatofasciatus
LHRHa
spawn
survival
sperm cell density
sperm motility
spellingShingle Paralabrax maculatofasciatus
LHRHa
spawn
survival
sperm cell density
sperm motility
Alcántar-Vázquez,Juan Pablo
Pliego-Cortés,Hugo Skyol
Dumas,Silvie
Peña-Martínez,Renato
Rosales-Velázquez,Martín
Pintos-Terán,Pablo
Effects of a luteinizing hormone-releasing hormone analogue (LHRHa) on the reproductive performance of spotted sand bass Paralabrax maculatofasciatus (Percoidei: Serranidae)
description Hormonal induction of spotted sand bass Paralabrax maculatofasciatus, was investigated in order to induce and synchronize spawning. Three experiments were conducted using wild fish captured in the Gulf of California: 1) LHRHa (luteinizing hormone-releasing hormone analogue) induced spawning with concentrations of 25, 50, 100 &#956;g kg-1 and saline solution, 2) Effects of LHRHa on motility and sperm density, and 3) Induction and incubation of spawns obtained using LHRHa. In experiments 2 and 3 using concentrations of 12.5, 25, 50 &#956;g kg-1 and saline solution. In experiment 1, a higher spawning ratio was observed for the concentration of 25 &#956;g kg-1; however, no significant differences were observed in the proportion of floating (viable) eggs. In experiment 2, significant differences (P < 0.05) were observed in duration of sperm motility and sperm density, with highest duration registered for wild fish (control group) and highest density registered for laboratory control group and concentration of 12.5 &#956;g kg-1. In experiment 3, significant differences (P < 0.05) were observed between treatments in volume of spawned eggs and proportion of fertilized eggs, with higher values shown for the concentrations of 50 and 12.5 &#956;g kg-1, respectively. Survival at hatching and proportion of live yolk-sac larvae were significantly higher (P < 0.05) for the concentration of 12.5 &#956;g kg-1. LHRHa was effective in inducing and synchronizing the spawning of spotted sand bass, a process which will be used for massive egg production.
author Alcántar-Vázquez,Juan Pablo
Pliego-Cortés,Hugo Skyol
Dumas,Silvie
Peña-Martínez,Renato
Rosales-Velázquez,Martín
Pintos-Terán,Pablo
author_facet Alcántar-Vázquez,Juan Pablo
Pliego-Cortés,Hugo Skyol
Dumas,Silvie
Peña-Martínez,Renato
Rosales-Velázquez,Martín
Pintos-Terán,Pablo
author_sort Alcántar-Vázquez,Juan Pablo
title Effects of a luteinizing hormone-releasing hormone analogue (LHRHa) on the reproductive performance of spotted sand bass Paralabrax maculatofasciatus (Percoidei: Serranidae)
title_short Effects of a luteinizing hormone-releasing hormone analogue (LHRHa) on the reproductive performance of spotted sand bass Paralabrax maculatofasciatus (Percoidei: Serranidae)
title_full Effects of a luteinizing hormone-releasing hormone analogue (LHRHa) on the reproductive performance of spotted sand bass Paralabrax maculatofasciatus (Percoidei: Serranidae)
title_fullStr Effects of a luteinizing hormone-releasing hormone analogue (LHRHa) on the reproductive performance of spotted sand bass Paralabrax maculatofasciatus (Percoidei: Serranidae)
title_full_unstemmed Effects of a luteinizing hormone-releasing hormone analogue (LHRHa) on the reproductive performance of spotted sand bass Paralabrax maculatofasciatus (Percoidei: Serranidae)
title_sort effects of a luteinizing hormone-releasing hormone analogue (lhrha) on the reproductive performance of spotted sand bass paralabrax maculatofasciatus (percoidei: serranidae)
publisher Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate 2016
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2016000300007
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