Impact of unilateral eyestalk ablation on Callinectes arcuatus (Ordway, 1863) under laboratory conditions: behavioral evaluation

ABSTRACT Eyestalk ablation allows the removal of neurohormones that inhibit early reproduction and decreases the time to complete the molting cycle. The present study evaluated the impact of unilateral eyestalk ablation on the behavior of blue crab breeders Callinectes arcuatus in the short term und...

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Autores principales:	Vargas-Téllez,Irma, Escamilla-Montes,Ruth, Arzola-González,Juan F., Diarte-Plata,Genaro, Luna-González,Antonio, Armenta-Leal,Idalia, Verduzco-Chávez,José R., Román-Reyes,José C., Ignacio-Borrego,Martín
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2021
Materias:	Callinectes arcuatus eyestalk ablation aggressiveness mating hormones aquaculture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000400576
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spelling	oai:scielo:S0718-560X20210004005762021-09-27Impact of unilateral eyestalk ablation on Callinectes arcuatus (Ordway, 1863) under laboratory conditions: behavioral evaluationVargas-Téllez,IrmaEscamilla-Montes,RuthArzola-González,Juan F.Diarte-Plata,GenaroLuna-González,AntonioArmenta-Leal,IdaliaVerduzco-Chávez,José R.Román-Reyes,José C.Ignacio-Borrego,Martín Callinectes arcuatus eyestalk ablation aggressiveness mating hormones aquaculture ABSTRACT Eyestalk ablation allows the removal of neurohormones that inhibit early reproduction and decreases the time to complete the molting cycle. The present study evaluated the impact of unilateral eyestalk ablation on the behavior of blue crab breeders Callinectes arcuatus in the short term under laboratory conditions. Immature male and female crabs and individuals in the intermolt stage were collected in Ohuira Bay, Ahome, Sinaloa, Mexico. Three bioassays were performed: males, females, and male-females each with three treatments; control + xylocaine (50 μL, 5%), squash ablation + xylocaine (50 μL, 5%), ablation by string ligation + xylocaine (50 μL, 5%), each with three replicas and three periods of evaluation after the ablation procedure (10 min, 2 h, and 24 h). Kruskal-Wallis and Chi-square (χ2) tests were used to evaluate significances (P < 0.05) in the behavior of C. arcuatus. The sizes of blue crab C. arcuatus were 9.72 ± 1.0 cm of carapace width. The feeding behavior of the male-females bioassay was significant at 2 h (P < 0.05). The results obtained were satisfactory using two techniques, unilateral eyestalk ablation by squash and ligation in which pain and aggressiveness indicators were mitigated. Disorientation and aggressiveness in males were significant at 2 h (P < 0.05), and in females after 10 min, and 2 h after ablation (P < 0.05). In the male-females bioassay, aggressiveness was significant at 2 h (P < 0.05). Courtship and copulation were recorded in those crabs subjected to unilateral eyestalk squash ablation (13 and 8, respectively).info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.49 n.4 20212021-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000400576en10.3856/vol49-issue4-fulltext-2676
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Callinectes arcuatus eyestalk ablation aggressiveness mating hormones aquaculture
spellingShingle	Callinectes arcuatus eyestalk ablation aggressiveness mating hormones aquaculture Vargas-Téllez,Irma Escamilla-Montes,Ruth Arzola-González,Juan F. Diarte-Plata,Genaro Luna-González,Antonio Armenta-Leal,Idalia Verduzco-Chávez,José R. Román-Reyes,José C. Ignacio-Borrego,Martín Impact of unilateral eyestalk ablation on Callinectes arcuatus (Ordway, 1863) under laboratory conditions: behavioral evaluation
description	ABSTRACT Eyestalk ablation allows the removal of neurohormones that inhibit early reproduction and decreases the time to complete the molting cycle. The present study evaluated the impact of unilateral eyestalk ablation on the behavior of blue crab breeders Callinectes arcuatus in the short term under laboratory conditions. Immature male and female crabs and individuals in the intermolt stage were collected in Ohuira Bay, Ahome, Sinaloa, Mexico. Three bioassays were performed: males, females, and male-females each with three treatments; control + xylocaine (50 μL, 5%), squash ablation + xylocaine (50 μL, 5%), ablation by string ligation + xylocaine (50 μL, 5%), each with three replicas and three periods of evaluation after the ablation procedure (10 min, 2 h, and 24 h). Kruskal-Wallis and Chi-square (χ2) tests were used to evaluate significances (P < 0.05) in the behavior of C. arcuatus. The sizes of blue crab C. arcuatus were 9.72 ± 1.0 cm of carapace width. The feeding behavior of the male-females bioassay was significant at 2 h (P < 0.05). The results obtained were satisfactory using two techniques, unilateral eyestalk ablation by squash and ligation in which pain and aggressiveness indicators were mitigated. Disorientation and aggressiveness in males were significant at 2 h (P < 0.05), and in females after 10 min, and 2 h after ablation (P < 0.05). In the male-females bioassay, aggressiveness was significant at 2 h (P < 0.05). Courtship and copulation were recorded in those crabs subjected to unilateral eyestalk squash ablation (13 and 8, respectively).
author	Vargas-Téllez,Irma Escamilla-Montes,Ruth Arzola-González,Juan F. Diarte-Plata,Genaro Luna-González,Antonio Armenta-Leal,Idalia Verduzco-Chávez,José R. Román-Reyes,José C. Ignacio-Borrego,Martín
author_facet	Vargas-Téllez,Irma Escamilla-Montes,Ruth Arzola-González,Juan F. Diarte-Plata,Genaro Luna-González,Antonio Armenta-Leal,Idalia Verduzco-Chávez,José R. Román-Reyes,José C. Ignacio-Borrego,Martín
author_sort	Vargas-Téllez,Irma
title	Impact of unilateral eyestalk ablation on Callinectes arcuatus (Ordway, 1863) under laboratory conditions: behavioral evaluation
title_short	Impact of unilateral eyestalk ablation on Callinectes arcuatus (Ordway, 1863) under laboratory conditions: behavioral evaluation
title_full	Impact of unilateral eyestalk ablation on Callinectes arcuatus (Ordway, 1863) under laboratory conditions: behavioral evaluation
title_fullStr	Impact of unilateral eyestalk ablation on Callinectes arcuatus (Ordway, 1863) under laboratory conditions: behavioral evaluation
title_full_unstemmed	Impact of unilateral eyestalk ablation on Callinectes arcuatus (Ordway, 1863) under laboratory conditions: behavioral evaluation
title_sort	impact of unilateral eyestalk ablation on callinectes arcuatus (ordway, 1863) under laboratory conditions: behavioral evaluation
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000400576
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Impact of unilateral eyestalk ablation on Callinectes arcuatus (Ordway, 1863) under laboratory conditions: behavioral evaluation

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