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      Comparación de los patrones conductuales del lobo marino común en época reproductiva y no reproductiva Translated title: Comparison of behavioral patterns of South American sea lions between breeding and non-breeding seasons

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          Abstract

          Se han descrito tácticas reproductivas para machos y hembras en sistemas reproductivos poligínicos, dentro de las cuales, una respuesta conductual sexo-específico sería esperable para maximizar el ixito reproductivo. El presente estudio da cuenta de un seguimiento conductual del lobo marino común Otaria flavescens durante la época reproductiva (ER) y no reproductiva (ENR) en el Santuario de la Naturaleza Lobería Cobquecura, Chile central. Se registraron patrones conductuales de machos, hembras, juveniles y crías entre mayo de 2008 y diciembre de 2009. Los machos presentaron mas registros de conductas asociadas a agresión, desplazamiento y reconocimiento durante ER, mientras que la conducta descanso fue mayor durante ENR. Hembras y juveniles presentaron mayores registros de reconocimiento durante ENR mientras que las otras categorías conductuales no presentaron diferencias entre ER y ENR. Las conductas agresivas por parte de los machos así como las relacionadas al cuidado parental por parte de las hembras podrían ser estrategias conductuales desarrolladas por ambos sexos para asegurar la viabilidad poblacional. Este estudio contribuye al conocimiento de los patrones conductuales reproductivos de la especie y forma parte de uno de los seguimientos conductuales reproductivos mas continuos desarrollados en la actualidad en el lobo marino común. Dado que el estudio se realiza en un area protegida dentro del marco legal de Santuario de la Naturaleza, los resultados expuestos serán de utilidad para futuras comparaciones con loberas reproductivas afectadas por actividad antrópica.

          Translated abstract

          In a polygynous mating system males and females have different reproductive strategies; so it is expectable that both sexes have evolved different reproductive behavioral responses to maximize their reproductive success. We analyze the behavior of different sex/age classes of Otaria flavescens during breeding (BS) and non-breeding seasons (NBS) at a Nature Sanctuary breeding colony, central Chilean coast. From May 2008 to December 2009 data of males, females, juveniles and pups were recorded. Males performed more aggression, locomotion and recognizing behaviors during the BS, while they mostly rested during the NBS. Females and juveniles performed more recognizing behavior in the NBS, while the other behavior categories did not show differences between the NBS and the BS. As reproductive behavioral strategies, male aggression and maternal care may increase the overall population viability. This study contributed to a better understanding of the reproductive behavior patterns of this species based on what is to our knowledge the most continuous monitoring of a South American sea lion breeding colony. Since the study has been undertaken in a Nature Sanctuary, the results may be used as a baseline to compare with behavioral data from colonies perturbed by human activities.

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          Biostatistical Analysis

          Designed for one/two-semester, junior/graduate-level courses in Biostatistics, Biometry, Quantitative Biology, or Statistics, the latest edition of this best-selling biostatistics text is both comprehensive and easy to read. It provides a broad and practical overview of the statistical analysis methods used by researchers to collect, summarize, analyze, and draw conclusions from biological research data. The Fourth Edition can serve as either an introduction to the discipline for beginning students or a comprehensive procedural reference for today's practitioners.
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            Observational Study of Behavior: Sampling Methods

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              Observational study of behavior: sampling methods.

              J Altmann (1974)
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                Author and article information

                Journal
                revbiolmar
                Revista de biología marina y oceanografía
                Rev. biol. mar. oceanogr.
                Universidad de Valparaíso. Facultad de Ciencias del Mar (Valparaíso, , Chile )
                0718-1957
                April 2013
                : 48
                : 1
                : 155-163
                Affiliations
                [02] Santiago orgnameCentro de Investigación Eutropia Chile
                [04] Concepción orgnameUniversidad de Concepción orgdiv1Facultad de Ciencias Naturales y Oceanográficas orgdiv2Programa de Investigación Marina de Excelencia Chile
                [01] Santiago orgnameUniversidad de Chile orgdiv1Facultad de Ciencias orgdiv2Instituto de Ecología y Biodiversidad Chile mjose.perez@ 123456eutropia.cl
                [03] Valparaíso orgnameUniversidad de Valparaíso orgdiv1Facultad de Ciencias orgdiv2Centro de Investigación y Gestión en Recursos Naturales Chile
                Article
                S0718-19572013000100013 S0718-1957(13)04800100013
                10.4067/S0718-19572013000100013
                944d0f27-a63a-4195-b6d1-ad51bed78afb

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 26 September 2012
                : 06 March 2013
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 56, Pages: 9
                Product

                SciELO Chile

                Categories
                ARTÍCULOS

                Sistema reproductivo poligínico,reproductive behavior,comportamiento reproductivo,Polygynous mating system,Otaria flavescens,Chile,otariids,otaridos

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