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      The caridean shrimps (Crustacea: Decapoda: Caridea: Alpheoidea, Palaemonoidea, and Processoidea) from Bahía Chamela, Mexico Translated title: Camarones carideos (Crustacea: Decapoda: Caridea: Alpheoidea, Palaemonoidea y Processoidea) de la bahía Chamela, México

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          Abstract

          Abstract: During a faunistic survey of the islands and islets of Bahía Chamela, Jalisco, Mexico, 40 species of caridean shrimps belonging to 5 families were collected; the Alpheidae with 3 genera and 20 species was the best represented, followed by the Palaemonidae with 10 genera and 12 species. Other families found were: Hippolytidae (3 genera, 5 species), Gnathophyllidae (1 genus, 1 species), and Processidae (1 genus, 2 species). Compared with the rest of the Mexican Pacific, the number of species found represents 44% of the genera and 45% of the benthic species of caridean shrimps reported to date. Ninety percent of the species collected correspond to new records for Bahía Chamela. Two species, Neopontonides henrivronprahli from Costa Rica and Colombia, and Thor cocoensis from Costa Rica and the Galápagos Islands, are recorded for the first time since their original description, extending their distribution range by ca 16 and 14 degrees of latitude to the north, respectively.

          Translated abstract

          Resumen: Como resultado de un estudio faunístico realizado en la bahía Chamela, Jalisco, se recolectó un total de 40 especies de carideos pertenecientes a 5 familias; los Alpheidae con 3 géneros y 20 especies fueron los mejor representados, seguidos por los Palaemonidae con 10 géneros y 12 especies. Otras familias fueron: Hippolytidae (3 géneros y 5 especies), Gnathophyllidae (1 género, 1 especie) y Processidae (1 género, 2 especies). Comparado con el resto del Pacífico mexicano, el número de especies encontradas representan el 44% de los géneros y el 45% de las especies de camarones carideos bentónicos registrados hasta la fecha. El 90% de las especies recolectadas corresponde a nuevos registros para la bahía Chamela. Dos especies, Neopontonides henrivronprahli de Costa Rica y Colombia, y Thor cocoensis de Costa Rica y las islas Galápagos, se registran por primera vez desde su descripción original, extendiendo su distribución aproximadamente 16 y 14 grados de latitud al norte, respectivamente.

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          Most cited references116

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          The shrimps of the Smithsonian-Bredin Caribbean Expeditions with a summary of the West Indian shallow-water species (Crustacea: Decapoda: Natantia)

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            Morphological phylogeny of alpheid shrimps: parallel preadaptation and the origin of a key morphological innovation, the snapping claw.

            The Alpheidae-possibly the most diverse family of recent decapod crustaceans-offers attractive opportunities to study the evolution of many intriguing phenomena, including key morphological innovations like spectacular snapping claws, highly specialized body forms, facultative and obligate symbioses with many animal groups, and sophisticated behaviors like eusociality. However, studies of these remarkable adaptations remain hampered by insufficient phylogenetic information. We present the first phylogenetic hypothesis of relationships among 36 extant genera of alpheid shrimps, based on a cladistic analysis of 122 morphological characters from 56 species, and we use this hypothesis to explore evolutionary trends in morphology and species diversity. Our results strongly supported a monophyletic Alpheidae that included two hitherto difficult-to-place genera (Yagerocaris and Pterocaris). Of 35+ nodes among genera, all were supported by at least one morphological character (24 were supported by two or more) and 17 received greater than 50% jackknife support. Unfortunately, many basal nodes were only weakly supported. Six genera appeared nonmonophyletic, including the dominant genus Alpheus (paraphyletic due to inclusion of one clade with three minor genera). Evolutionary trends in alpheid claw form shed some revealing light on how key innovations evolve. First, several functionally significant features of the cheliped (claw bearing leg) evolved independently multiple times, including: asymmetry, folding, inverted orientation, sexual dimorphism, adhesive plaques that enhance claw cocking, and tooth-cavity systems on opposing claw fingers, a preadaptation for snapping. Many conspicuous features of alpheid claw form therefore appear prone to parallel evolution. Second, although tooth-cavity systems evolved multiple times, a functional snapping claw, which likely facilitated an explosive radiation of over 550 species, evolved only once (in Synalpheus + [Alpheus + satellite genera]). Third, adhesive plaques (claw cocking aids) also evolved multiple times, and within snapping alpheids are associated with the most diverse clade (Alpheus + derivative genera). This pattern of parallel preadaptation-multiple independent evolutionary origins of precursors (preadaptations) to what ultimately became a key innovation (adaptation)-suggests alpheid shrimp claws are predisposed to develop features like tooth-cavity and adhesive plaque systems for functional or developmental reasons. Such functional/developmental predisposition may facilitate the origin of key innovations. Finally, moderate orbital hoods-anterior projections of the carapace partly or completely covering the eyes-occur in many higher Alpheidae and likely evolved before snapping claws. They are unique among decapod crustaceans, and their elaboration in snapping alpheids suggests they may protect the eyes from the stress of explosive snaps. Thus one key innovation (orbital hoods) may have facilitated evolution of a second (snapping claws).
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              A general revision of the Palaemonidae (Crustacea, Decapoda, Natantia) of the Americas II.The Subfamily Palaemoninae

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                Author and article information

                Journal
                rmbiodiv
                Revista mexicana de biodiversidad
                Rev. Mex. Biodiv.
                Instituto de Biología (México, DF, Mexico )
                1870-3453
                2007-8706
                June 2016
                : 87
                : 2
                : 311-327
                Affiliations
                [3] Mazatlán orgnameUniversidad Nacional Autónoma de México orgdiv1Instituto de Ciencias del Mar y Limnología orgdiv2Laboratorio de Invertebrados Bentónicos Mexico
                [1] Zapopan orgnameUniversidad de Guadalajara orgdiv1Centro Universitario de Ciencias Biológicas y Agropecuarias orgdiv2Laboratorio de Ecosistemas Marinos y Acuicultura, Departamento de Ecología Mexico
                [2] México D.F. orgnameComisión Nacional para el Conocimiento y Uso de la Biodiversidad Mexico
                Article
                S1870-34532016000200311 S1870-3453(16)08700200311
                10.1016/j.rmb.2016.04.002
                f0346708-9c32-4b57-b75b-63a6789f8da1

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

                History
                : 11 May 2015
                : 11 November 2015
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 122, Pages: 17
                Product

                SciELO Mexico

                Categories
                Taxonomy and systematics

                Biodiversity,Tropical Mexican Pacific,Jalisco,New records,Biodiversidad,Pacífico tropical mexicano,Registros nuevos

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