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Poliquetos (Annelida: Polychaeta) del arrecife coralino de Cabo Pulmo-Los Frailes, B.C.S., México

Authors:
  • Universidad del Mar (Mexico), campus Puerto Ángel

Abstract

Polychaete samples were taken by SCUBA divers in six stations on the Cabo Pulmo-Los Frailes coral reef barriers, in dephts from 4 to 17 m, on dead fragments of coral Pocillopora verrucosa. 556 specimens were collected belonging to 82 species, 61 genera and 21 families. A check-list and brief diagnosis of species with new records for Gulf of California are given. The family Syllidae has the largest number of species (14), followed by Serpulidae (11) and Eunicidae (9). The most abundant species were the sabellariid Idanthyrsus pennatus with 162 specimens (29%), the eunicid Eunice antennata with 47 (9%), and the syllid Trypanosyllis (Trypanedenta) taeniaformis with 21 (4%). Five taxa are new records for Mexico. Range extensions: one from California, Hydroides gracilis; three from the Western Pacific, Typosyllis cf. taprobanensis, Nereis jacksoni and Placostegus sp.; and one from the South Atlantic Ocean, Proscoloplos sp.
... The coral-associated macroinvertebrate fauna has been partially investigated in EP systems mainly as part of single taxonomic group inventories of polychaetes, mollusks, echinoderms, and decapods (Abele 1974;Bastida-Zavala 1995;García-Madrigal, 1999;García-Madrigal and Bastida-Zavala, 1999;Granja-Fernández et al., 2014;Barrientos-Luján et al., 2017Chávez-López and Cruz-Gómez 2019;Alonso-Domínguez et al., 2022). Macroinvertebrate biodiversity patterns are currently restricted in space (single locality or few sites in Central America), some of which explore invertebrate responses to coral mortality or temporal, spatial, and environmental gradients . ...
... Instead, species richness differences may result from potential differences among methods, particularly in species sorting and taxonomic species-level identification or resolution in taxa other than Decapoda. When studies focus on single taxonomic groups such as Polychaeta (Grassle 1973;Bastida-Zavala 1995;Molodtsova et al., 2016), Mollusca (Reed and Mikkelsen 1987;Díaz et al., 1990;Barrientos-Luján et al., 2021) and Echinodermata (Sloan 1982;López-Pérez et al., 2017) where species sorting is detailed and taxonomic resolution is high, the reported species richness is slightly greater or similar to that recorded in the present study. ...
... Su presencia en el país es cuestionable. Se ha registrado en EUA en las ecorregiones Pacífico transicional y Pacífico de Columbia; en California (Blake & Woodwick, 1975) (Bastida-Zavala, 1995). SINALOA: bahía de Mazatlán, municipio de Mazatlán, en esponjas (Rioja, 1943). ...
... Dado que F. miamiensis y F. enigmaticus comparten muchas características biológicas, se considera que la especie tiene el potencial de generar un impacto equivalente al ocasionado por F. enigmaticus. Además, las fluctuaciones temporales de F. miamiensis registradas durante 1993-1995(Salgado-Barragán, 2002, comprueban que esta especie puede cambiar la estructura de la comunidad nativa asociada a raíces de mangle. Mediante el desplazamiento de la especie abundante, el mejillón M. strigata; sin embargo, este desplazamiento se limitó a dos breves temporadas. ...
... (Weisbord 1964), Brazil (Zibrowius 1970), Hawaii (Bastida-Zavala 2008) and Australia (Lewis et al. 2006). Tropical Eastern Pacific: Gulf of California (Rioja 1942, 1947, Berkeley and Berkeley 1958Rioja 1963;Bastida-Zavala 1993, 1995, 2008 Remarks. Spirobranchus minutus was described from Acapulco, Guerrero (Rioja 1941b). ...
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The port fouling fauna from Mexico has recieved greater study in the last 15 years. By improving our knowledge of fouling invertebrates on artificial substrates on the Southern Pacific coast of Mexico, we can better understand their distribution and prevent bioinvasions. The specimens listed in this present study come from PVC plates that were placed between June 2019 to June 2020 submerged at 1 m depth, on four docks of the Chahué Marina, Oaxaca, Mexico. Forty-four taxa, representing nine phyla were identi-fied: Sipuncula (1 species), Entoprocta (1), Bryozoa (3), Arthropoda (3), Porifera (4), Cnidaria (5), Chordata (6), Mollusca (10) and Annelida (11). Thirty taxa were identified to species, with two still requiring confirmation. Five were identified to genus, two to family, and five to class level. From the 30 identified species, 18 were non-native species: one entoproct, one mollusk, two bryozoans, three hydrozoans, three barnacles, four polychaetes, and four ascidians. These results include seven new records from the state of Oaxaca: one entoproct, one barnacle, two bryozoans, and three hydrozoans.
... Panamá y Colombia (Monro 1933, Fauchald 1977b), 1.8 m; Guerrero y Sinaloa (Rioja 1942); México, Galápagos y Ecuador (Hartman 1944); bahía Santiago, Colima, México (Berkeley & Berkeley 1958); isla Socorro, Revillagigedo (Rioja 1959); Baja California y Sonora (Rioja 1963); Baja California Sur (Bastida-Zavala 1993, 1995; Oaxaca (Gómez et al. 1997) Localidad tipo: Mozambique. A partir de la revisión de Kirtley 1944), los registros de I. pennatus en el POT devienen cuestionables y los ejemplares que él revisó fueron reidentificados como I. cretus. ...
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Parasphaerosyllis Monro, 1937 is a syllid genus, currently composed of four species: P. indica Monro, 1937 from the Arabian Sea, P. uschakovi (Chlebovitsch, 1959) from the Kurile Islands, P. ezoensis Imajima & Hartman, 1964 from Japan and P. malimalii Capa, San Martín & López, 2001 from the Pacific coast of Panama. The distribution of P. indica is circum-tropical to temperate waters, but the presence of species complexes has been suggested. In order to clarify the distribution of P. indica in many areas of the world, a re-description, based on examination of the type material, is required as a first step to a better understanding of its diagnostic features. Parasphaerosyllis indica is re-described, based on holotype examination, a new species is established from the Gulf of California and Parasphaerosyllis malimalii is reported for the first time since its description in 2001. Parasphaerosyllis irregulata sp. nov. is distinguished from its congeners by the following features: 1) Palps are free at their base; 2) Two types of dorsal cirri are present: spherical to bulbous and moniliform cirri; 3) Both types of cirri are distributed irregularly. A spherical/bulbous and moniliform cirrus may appear together within the same segment (asymmetrical segment) or only a spherical/bulbous cirrus may appear in several consecutive segments (not alternating as occurs in congeners); 4) The spherical/bulbous cirri may have distal knobs with 1–3 terminal articles; and 5) Bidentate falcigers with short, sub-triangular blades with a proximal tooth slightly larger that the distal one. A taxonomic key to species of Parasphaerosyllis species is included.
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Four new species of terebellids (Terebellidae, Polychaeta) associated with hard substrates in the Coiba National Park (Panamanian Pacific) are described. The diagnostic features of each species within their respective genera are as follows: Eupolymnia joaoi sp. nov. has an enlarged second pair of lateral lobes, nephridial papillae present on segments 3–8, 14 ventral pads, neuropodial tori with uncini arranged in one single row in segments 5–10, and uncini with two rows of 2–3 teeth each over the main fang; Lanicola guillermoi sp. nov. has prostomial eyespots and a characteristic shape and dental formula of the uncini, with a larger tooth on the first row over the main fang and 3–5 teeth on the second row; Lanicola eduardoi sp. nov. lacks prostomial eyespots and has a characteristic uncinial dental formula on anterior and posterior segments of MF:3:2 and MF:1:1–3, respectively; Thelepus fraggleorum sp. nov. has branchial filaments separated by a wide dorsal gap, a characteristic uncinial dental formula of MF:2:1 on anterior uncini and MF:2–3:1–3 on posterior, and notopodia on more than half of anterior segments. In addition, the status of Terebella gorgonae and Eupolymnia regnans, two species previously recorded from the Panamic Province (Tropical Eastern Pacific), is examined. Descriptions of the syntype of E. regnans and of possible specimens of “Terebella” cf. Terebella gorgonae from the Coiba National Park are provided. The genus Paraeupolymnia is synonymised with Lanicola, and the diagnosis of Lanicola is emended.
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Pomatostegus Schmarda, 1861 is a serpulid genus with three recognized species, mostly from tropical waters. Pomatostegus stellatus (Abildgaard, 1789), was described from the Caribbean Sea, and has been widely recorded in the Pacific and Indian oceans; P. kroyeri Mörch, 1863 was described from Puntarenas, Costa Rica; however, most records from the Tropical Eastern Pacific were referred to P. stellatus. In this work, the two species are redescribed using morphological characters. The main differences are in the shape of the Spirobranchus-type collar chaetae, opercular plate shape and the number of "free" circlets of spines without accompanying of opercular plates. Comments about characters of P. actinoceras Mörch, 1863, described from Philippines, and an identification key for the three species, are included. En español: Pomatostegus Schmarda, 1861 es un género de serpúlidos con tres especies reconocidas, principalmente de aguas tropicales. Pomatostegus stellatus (Abildgaard, 1789), fue descrita para el mar Caribe, pero se ha registrado ampliamente en los océanos Pacífico e Índico; P. kroyeri Mörch, 1863 fue descrito en Puntarenas, Costa Rica; sin embargo, la mayoría de los registros del Pacífico oriental tropical fueron como P. stellatus. En este trabajo, las dos especies son redescritas utilizando caracteres morfológicos. Las principales diferencias están en la forma de las setas del collar tipo Spirobranchus, la forma de las placas operculares y el número de círculos de espinas "libres" sin acompañamiento de placas operculares. Se incluyen comentarios sobre los caracteres de P. actinoceras Mörch, 1863, descrita de las islas Filipinas, y una clave de identificación para las tres especies.
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ABSTRACT. The knowledge of boring worms in the coral reefs of the Colombian Tropical Eastern Pacific (TEP) is scarce. To know which species bore into coralline substrates, experimental units made of dead branches of Pocillopora spp. were deployed and exposed in the coral reefs of Gorgona Island (Colombian Pacific) during various periods of time. A total of 571 worms in 21 species were collected. Of these, 18 were polychaetes and 3 sipunculids. Most of these species correspond to new records in the Colombian TEP, specifically 13 of the 18 species of polychaetes and 2 of the 3 species of sipunculids. These findings suggest that more research is needed to gain knowledge about the biodiversity of these poorly-known groups in understudied regions like the Colombian TEP. RESUMEN. El conocimiento de los gusanos bioerosionadores en los arrecifes coralinos del Pacífico Tropical Oriental (PTO) colombiano es escaso. Para saber qué especies perforan estos sustratos coralinos se utilizaron unidades experimentales hechas de ramas muertas de Pocillopora spp., las cuales estuvieron expuestas en los arrecifes coralinos de la isla Gorgona (Pacífico colombiano) durante varios periodos de tiempo. Un total de 571 gusanos de 21 especies fueron recolectados; de estas, 18 son poliquetos y 3 sipúnculos. La mayoría de estas especies corresponden a nuevos registros para el PTO colombiano, en concreto, 13 de las 18 especies de poliquetos y 2 de las 3 de sipúnculos. Estos hallazgos sugieren la necesidad de realizar más estudios con el objetivo de generar conocimiento sobre la biodiversidad de estos grupos poco conocidos en regiones poco estudiadas, como es el caso del PTO colombiano.
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Background: The islands and islets of Bahía de Chamela, in the Eastern Tropical Pacific, were declared as the first marine sanctuary in Mexico and has been protected since 2002. Their marine biodiversity has been documented in a series of papers in the last decade, but only three species of polychaete worms have been reported. New information: Sixteen species of sedentary polychaete worms belonging to the families Maldanidae, Oweniidae, Sabellariidae, Sabellidae and Serpulidae are reported to the Bahía de Chamela Islands Sanctuary, 15 of these species constituting the first records in the area. Isocirrus tropicus (Monro, 1928) (Monro 1928) and Notaulax californica (Treadwell, 1906) (Treadwell 1906) constitute new records to Mexico; Idanthyrsus mexicanus Kirtley, 1904 (Kirtley 1994) is first recorded since its description and one species of bamboo worm (Maldanidae) is described as new to science. The new species belongs to the genus Clymenura Verril, 1900 (Verrill 1900) and its characterised by the presence of a glandular shield on chaetiger 8; a cephalic plaque oval with smooth margins and a rounded palpode; nuchal organs straight, parallel, almost full length of plaque; manubriavicular uncini present from chaetiger 1 with 3-4 teeth above the main fang without hairs or bristles; two pre-anal achaetous segments with tori; an anal funnel with alternating triangular cirri, being the longest that are located mid-ventrally.
Thesis
Identifier to cite or link to this item (dc.identifier.uri): http://repositoriodigital.ipn.mx/handle/123456789/26365 Abstract: Charismatic and commercial species are subjects of conservation and regulation plans, but without knowledge about their impact on the community or vice versa. Ecosystem-based management for marine resources is becoming a consensus and the food webs are a powerful tool and the path to explore it. In the Gulf of California, food webs were studied through mass balance models. Based on previously published studies of diets, it be constructed a food web with major taxonomic resolution as possible for the Gulf of California. From this network, it is assessed the structural importance of the main charismatic and commercial species applying topological models. The trophic network studied consisted of 317 taxa, 74% of which were identified at the species level. The food web is composed of fishes (49.2%); sharks (7.9%); zooplankton (7.6%); rays (5.4%); phytoplankton (4.7%); benthic invertebrates (4.7%); mammals (3.15%); macroalgae (3.15%); phanerogams (2.2%); shrimps (1.9%); crabs (1.9%); cephalopods (1.9%); echinoderms (1.26%) and reptiles (0.63%). Lolliguncula (spp.) is the most intermediary of the energy flow, even though shrimps, crabs or stomatopods also occupied central positions in the trophic network. Greater ecosystem control is derived from the white shark, because his predation on high trophic levels, but Hammerhead shark, phytoplankton and diatoms also influenced on the energy flow suggesting mixed ecosystem control. Carcharhinus falciformis as the brown and blue shrimps were main nodes on the direct effects due to their high connectivity, and the most influents nodes for indirect effects were top predators, producers and primary consumers. The key players set to expand trophic effects in the network were Lolliguncula (spp.) and amphipods. Excluding the blue whale, the white shark or the four-commercial species at time, modified the optimum trophic routes and the dispersion´s speed of the effects; however, the food web shows robustness against disturbances. Even so, is suggested take care the health of loliginid squid and white shark populations. http://www.biblioteca.cicimar.ipn.mx/oacis/tesisdesplegardetalles.php?id=994 Número de registro: A160996 Centro Interdisciplinario de Ciencias Marinas (CICIMAR-IPN)
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