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Article . 2023
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Mortality and Mate-Searching Behavior in Pomacea canaliculata (Caenogastropoda: Ampullariidae)

Authors: Osinaga, Milagros Inés; Tamburi, Nicolas Eduardo; Martín, Pablo Rafael;

Mortality and Mate-Searching Behavior in Pomacea canaliculata (Caenogastropoda: Ampullariidae)

Abstract

Pomacea canaliculata es un caracol dulceacuícola de origen sudamericano conocido como plaga de cultivos acuáticos y generador de cambios ecosistémicos en humedales naturales. Esto lo ha convertido en una especie modelo para estudios ecológicos. Sin embargo, aspectos fundamentales de su biología, como los factores que afectan su supervivencia permanecen poco explorados. Estudios recientes sugieren que los machos podrían mantener niveles altos de actividad para buscar pareja aun en condiciones de ayuno, poniendo en juego su supervivencia. Los objetivos del presente trabajo fueron analizar la supervivencia de P. canaliculata ante la presencia de un congénere del mismo o de distinto sexo, y buscar cambios en los patrones de actividad relacionados a la búsqueda de pareja que pudiesen mermar su supervivencia. Se registró una menor supervivencia en los machos, sin poder demostrar que ésta sea afectada por el sexo del congénere con quien compartían acuario. No se observaron cambios de actividad, medidos como la velocidad media, velocidad máxima o superficie explorada, en función del sexo de la pareja asignada al caracol experimental. La menor supervivencia en machos no se relaciona con mayores niveles de actividad y probablemente obedezca a diferencias fisiológicas entre sexos. La ausencia de diferencias de comportamiento en relación al sexo de la pareja parece explicarse por un inesperado estado de reposo post-reproductivo. Este estudio puede considerarse como una descripción de los niveles de actividad normales y estudios de una escalatemporal más amplia podrían requerirse para detectar si el comportamiento sexual puede alterar la supervivencia de esta especie.

Pomacea canaliculata is a South American freshwater snail which is well known as a pest of aquatic crops and a driver of ecosystem changes in natural wetlands. This has made it a model for ecological studies. However, fundamental aspects of their biology, such as the factors that affect their survival, remain little explored. Recent studies suggest that males may maintain high levels of mate-searching activity even under fasting conditions, jeopardizing their survival. The aims of this study were to analyse the survival of P. canaliculata snails in presence of a congener of the same or different sex and to look for changes in the activity patterns related to the search for a mate that could reduce its survival. A lower survival was recorded in males, without being able to demonstrate that this is affected by the sex of the congener with whom they shared an aquarium. No differences in activity (mean speed, maximum speed or explored surface) were observed depending on the sex of the pair assigned to the experimental snail. The lower survival of males is not related to higher levels of activity and is probably due to physiological differences between the sexes. The absence of behavioural differences in relation to the sex of the couple seems to be explained by an unexpected state of post-reproductive arrest. This study can be considered as a description of normal activity levels and studies of a broader time scale may be necessary to detect whether sexual behaviour can alter their survival.

Fil: Tamburi, Nicolas Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; Argentina. Universidad Nacional del Sur. Departamento de Matemática; Argentina

Fil: Martín, Pablo Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; Argentina

Fil: Osinaga, Milagros Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina

Country
Argentina
Keywords

SUPERVIVENCIA, CARACOL MANZANA, https://purl.org/becyt/ford/1.6, https://purl.org/becyt/ford/1, GASTROPODA, AYUNO

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green