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      Observations on the early development of the kelpfish Myxodes viridis (Clinidae) with the first description of their spawning habitat in subtidal kelp forests (Lessonia trabeculata) Translated title: Observaciones del desarrollo temprano de la doncellita, Myxodes viridis (Clinidae), y la primera descripción de su hábitat de desove en bosques de macroalgas pardas submareales (Lessonia trabeculata)

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          Abstract

          Abstract: The spawning sites, embryonic development, and initial larval stages were described for the Chilean kelpfish, Myxodes viridis. Six different egg clutches were found attached by an elastic filament to the fronds of the subtidal kelp, Lessonia trabeculata, at shallow depths (0-7 m). All egg clutches were cared by one large (>15 cm TL) male, and egg color varied depending on the developmental stage. Embryonic development until hatching was categorized into 7 stages, which were completed within about 18 days in the laboratory. Recently hatched larvae presented fully pigmented eyes, a well-developed mouth with major shape changes in the head during the first week suggesting their ability to feed on plankton early in their larval development.

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          MorphoJ: an integrated software package for geometric morphometrics.

          Increasingly, data on shape are analysed in combination with molecular genetic or ecological information, so that tools for geometric morphometric analysis are required. Morphometric studies most often use the arrangements of morphological landmarks as the data source and extract shape information from them by Procrustes superimposition. The MorphoJ software combines this approach with a wide range of methods for shape analysis in different biological contexts. The program offers an integrated and user-friendly environment for standard multivariate analyses such as principal components, discriminant analysis and multivariate regression as well as specialized applications including phylogenetics, quantitative genetics and analyses of modularity in shape data. MorphoJ is written in Java and versions for the Windows, Macintosh and Unix/Linux platforms are freely available from http://www.flywings.org.uk/MorphoJ_page.htm. © 2010 Blackwell Publishing Ltd.
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            The evolution of parental care.

            Our understanding of parental care behavior can be significantly advanced through the application of Williams's Principle, which states that reproduction has not only a benefit but also a cost to lifetime fitness. My laboratory has formalized Williams's Principle into the relative value theorem and found that its application to fishes, the taxa with the most diverse patterns of parental care, can help to explain which sex provides care and how much. In fishes, it is often the male that provides parental care, not because the male obtains greater benefits from this care, but probably because he pays fewer costs. Fish dynamically adjust their investment into parental care according to the number of offspring in their brood, past investment, genetic relatedness, and alternative mating opportunities, all of which affect the value of current offspring relative to potential future offspring. These results may also help us understand the joy and the challenges of parental care in humans.
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              The costs of parental care in teleost fishes

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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 2021
                : 56
                : 1
                : 66-73
                Affiliations
                [2] Santiago Santiago de Chile orgnamePontificia Universidad Católica de Chile orgdiv1Facultad de Ciencias Biológicas orgdiv2Estación Costera de Investigaciones Marinas Chile
                [1] Santiago Santiago de Chile orgnamePontificia Universidad Católica de Chile orgdiv1Facultad de Ciencias Biológicas, Departamento de Ecología orgdiv2Subtidal Ecology Laboratory, Estación Costera de Investigaciones Marinas Chile
                Article
                S0718-19572021000100007 S0718-1957(21)05600100007
                10.22370/rbmo.2021.56.1.2799
                e7aebf8e-263e-4f80-98c7-661a4180594a

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

                History
                : 24 June 2020
                : 25 September 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 35, Pages: 8
                Product

                SciELO Chile


                spawning site,embryonic development,hatching,larvae,Kelpfish

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