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Sistemática Y Biogeografía Del Orden Cumacea (Crustacea: Peracarida) Del Mar Argentino

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Sistemática Y Biogeografía Del Orden Cumacea (Crustacea: Peracarida) Del Mar Argentino Tesis Doctoral Sistemática y biogeografía del orden Cumacea (Crustacea: Peracarida) del Mar Argentino Alberico, Natalia Andrea 2012-03-23 Este documento forma parte de la colección de tesis doctorales y de maestría de la Biblioteca Central Dr. Luis Federico Leloir, disponible en digital.bl.fcen.uba.ar. Su utilización debe ser acompañada por la cita bibliográfica con reconocimiento de la fuente. This document is part of the doctoral theses collection of the Central Library Dr. Luis Federico Leloir, available in digital.bl.fcen.uba.ar. It should be used accompanied by the corresponding citation acknowledging the source. Cita tipo APA: Alberico, Natalia Andrea. (2012-03-23). Sistemática y biogeografía del orden Cumacea (Crustacea: Peracarida) del Mar Argentino. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Cita tipo Chicago: Alberico, Natalia Andrea. "Sistemática y biogeografía del orden Cumacea (Crustacea: Peracarida) del Mar Argentino". Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. 2012-03-23. Dirección: Biblioteca Central Dr. Luis F. Leloir, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Contacto: [email protected] Intendente Güiraldes 2160 - C1428EGA - Tel. (++54 +11) 4789-9293 UNIVERSIDAD DE BUENOS AIRES Facultad de Ciencias Exactas y Naturales Departamento de Biodiversidad y Biología Experimental Sistemática y biogeografía del orden Cumacea (Crustacea: Peracarida) del Mar Argentino Tesis presentada para optar al título de Doctor de la Universidad de Buenos Aires en el área de Ciencias Biológicas Lic. Natalia Andrea Alberico Director de tesis: Dr. Daniel Roccatagliata Consejero de Estudios: Dr. Daniel Roccatagliata Lugar de trabajo: Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, UBA. Buenos Aires, marzo 2012 Sistemática y biogeografía del orden Cumacea (Crustacea: Peracarida) del Mar Argentino Resumen El orden Cumacea (Peracarida) agrupa más de 1.600 especies. Sin embargo, el conocimiento de los cumáceos del Mar Argentino es incompleto. El objetivo principal de esta tesis doctoral es avanzar en el estudio de dicha fauna. Se analizaron 156 muestras bentónicas recolectadas desde Uruguay hasta Tierra del Fuego (entre 2 y 150 m). Se identificaron 36 entidades taxonómicas, 4 familias y 12 géneros; 11 especies resultaron nuevas para la ciencia. La familia Diastylidae fue la más diversa y la mejor representada con 19 entidades taxonómicas pertenecientes a los géneros Anchistylis, Diastylis, Ekleptostylis, Makrokylindrus y Vemakylindrus. Se cita por primera vez al género Vemakylindrus para el área, y se extiende el intervalo de distribución de numerosas especies. Se describen cinco nuevas especies, Diastylis fabrizioi n. sp., D. sexpectinata n. sp., Diastylis n. sp. B, D. andeepae n. sp. y D. catalinae n. sp., las dos últimas del Mar de Weddell. Además, se completan las descripciones de: Diastylis hammoniae, D. planifrons, D. sympterygiae y D. geocostae. Se propone la sinonimia de Leptostylis (?) mancoides con D. hammoniae, y Diastylis manca es tratada como species inquirenda. Se confeccionan claves dicotómicas para separar las familias, géneros y las especies del gro. Diastylis del Mar Argentino. Se describe al copépodo nicothoideo Homoeoscelis meridionalis n. sp., que infesta las cámaras branquiales de Diastylis fabrizioi y D. planifrons, siendo este el primer registro del gro. Homoeoscelis para el Hemisferio Sur. La nueva especie se compara con H. minuta y H. frigida, y se presentan datos biológicos sobre esta asociación parásitoAhospedador. 0or <ltimo se da a conocer un listado de todas las especies del orden reportadas para el 3ar Ar entino, y se estudian sus afinidades faun!sticas a trav9s de la aplicaci$n del an#lisis cluster a datos de presencia/ausencia, utilizando el !ndice de SCrensen /pro rama 0RI3ER v.51. Estos an#lisis permitieron reconocer las dos provincias bio eo r#ficas de la plataforma ar entina: ar entina y ma all#nica. Las islas Deor ias del Sur mostraron una ba)a afinidad con las localidades de la provincia bio eo r#fica ma all#nica. 0alabras claves: Cumacea, 3ar Ar entino, taxonom!a, Diastylis, par#sitos, Homoeoscelis, 3ar de Weddell, bio eo raf!a. Systematic and biogeography of Cumacea (Crustacea: Peracarida) from the Argentine Sea Abstract The order Cumacea /0eracarida1 comprises over ..200 species. HoEever, our FnoEled e of the fauna from the Ar entine Sea is still incomplete. Therefore, the aim of the present thesis is to improve the taxonomy and bio eo raphy of the cumaceans from Ar entina. Approximately .53 benthic samples collected from Uru uay to Tierra del Fue o /2A.50 m1 Eere analyzed. As many as 32 nominal species, 8 families and .2 enera Eere identified, .. species Eere neE to science. The family Diastylidae presented not only the hi hest diversity but also the lar est abundance. A total of .9 species belon in to the enera Anchistylis, Diastylis, Ekleptostylis, Makrokylindrus and Vemakylindrus Eere identified. The enus Vemakylindrus is first recorded from Ar entina. The ran e of distribution of several species is extended. Five neE species Eere fully described: Diastylis fabrizioi n. sp., D. sexpectinata n. sp., Diastylis n. sp. B, D. andeepae n. sp. and D. catalinae n. sp., the last tEo from the Weddell Sea. The descriptions of other four diastylids are completed: Diastylis hammoniae, D. planifrons, D. sympterygiae and D. geocostae. Diastylis hammoniae is redescribed based on its type material, the synonymy of Leptostylis /?1 mancoides Eith Diastylis hammoniae is proposed and D. manca is treated as species inquirenda. Identification Feys to separate the families, enera and all the species of the enus Diastylis FnoEn from Ar entina are presented. The nicothoid copepod Homoeoscelis meridionalis n. sp. is fully described. It Eas found infestin the branquial chambers of Diastylis fabrizioi and D. planifrons. This is the first record of de enus Homoeoscelis from the Southern Hemisphere. The neE species is compared Eith Homoeoscelis minuta and H. frigida: and brief remarFs on this parasiteAhost association are iven. A list of all the species reported from the Ar entine Sea is presented. The faunistic affinities Eere studied usin the analyses of hierarchical clusterin , the SCrensen index Eas calculated based on the presence/absence species data /0RI3ER v.5 softEare1. The results of these faunistic analyses fit Eith the tEo bio eo raphic provinces reco nized for the Ar entine continental shelf: Ar entine and 3a ellan. In addition, South Deor ia Island presented a loE similarity Eith the localities of the 3a ellan 0rovince. GeyAEords: Cumacea, Ar entine Sea, taxonomy, Diastylis, parasites, Homoeoscelis, Weddell Sea, bio eo raphy. Agradecimientos • 3i mayor a radecimiento es para el Dr. Daniel Roccata liata, mi director de tesis, por recibirme en su rupo de traba)o, por sus enseHanzas y su apoyo. • A la Dra. Ute 3IhlenhardtASie el y la Dra. An eliFa Brandt por su hospitalidad durante mi estad!a en el Joolo isches 3useum Hambur /J3H1. • Al Sr. Fabrizio Scarabino por proporcionarme abundantes lotes de e)emplares provenientes del Frente 3ar!timo Ar entinoAUru uayo. • A la Dra. Brenda Doti por su ayuda con el an#lisis bio eo r#fico. • Al Dr. 0eter Rehm y el Dr. Christopher BoyFo por el env!o de biblio raf!a de dif!cil acceso sobre cop9podos nicotoideos. • Al Dr. Deoffrey Boxshall por sus valiosos comentarios sobre los borradores del estudio de Homoeoscelis meridionalis. • Al Lic. 0edro Cristales, el Dr. Jos9 Dad$n, el Dr. Carlos Borzone, la Dra. Liliana Forneris, el Dr. Norton 3attos Dianuca, el Dr. Die o Diberto, la Lic. 0amela Donz#lez Salvo, el Dr. Juan L$pez Dappa, el Dr. Jos9 3ar!a /Lobo1 Orensanz, la Dra. Catalina 0astor de Ward, el Dr. 3arcelo 09rez, el Dr. 0eter Rehm, la Dra. Carolina Romero, la Lic. Lorena Scenna, la Lic. Valeria ShimabuFuro y el Dr. Die o Jelaya por varias de las muestras de cum#ceos. • A la Dra. An eliFa Brandt del Joolo isches 3useum Hambur , la Dra. Danielle Defaye del 3us9um National dLHistoire Naturelle, 0aris, y el Dr. JCr en Olesen del Joolo isF 3useum, Copenha ue por el env!o del material tipo estudiado en esta tesis. • A la A encia Nacional de 0romoci$n Cient!fica y Tecnol$ ica /AN0CyT1, al Conse)o Nacional de Investi aciones Cient!ficas y T9cnicas /CONICET1 y al Deutscher AFademischer Austausch Dienst /DAAD1 por las becas otor adas. Dedicatorias Quisiera dedicar esta tesis a todas las personas que de una forma u otra estuvieron presentes durante los años que duró el doctorado, no solo en la parte profesional sino, en lo que para mí es más importante, estuvieron apoyándome y dándome fuerzas en los distintos aspectos de mi vida. Ellas son: Bren y Nacho, mis compañeritos, por aceptarme desde el principio como una parte más del grupo, brindarme sus conocimientos, ayudarme ante cualquier duda y siempre con la mejor onda, por las innumerables tardes de charla, risa y mate desastroso (por el cuelgue de Nacho, obvio) y las terapias grupales. Gracias por ser mis compañeros y sobre todo mis amigos. Caro, mi compañera persistente desde la primer materia de la facultad. Siempre fuiste un ejemplo para mí, por tu pasión por la carrera que estábamos transitando juntas y unos años después por la misma pasión que le dedicas a tu profesión. Muchas veces me diste fuerza e inspiración cuando ya sentía que no podía seguir. Gracias amiga, por todos estos años que llevamos juntas dentro y fuera de la facu. Mari, Mara, Pato, Pao compañeras de la segunda etapa facultativa. Cuantos recuerdos, momentos y viajes compartidos, gracias por haber hecho de la cursada un momento ameno y divertido, y principalmente mil gracias por nuestra amistad. Beren, mi chiquito, me acompañaste durante la escritura de la tesis durmiendo a mis pies, mi compañero incondicional. Chiquis, Luli y Vane, mis amigas del alma, siempre conmigo, literalmente.
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