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1.
Artículo en Inglés | MEDLINE | ID: mdl-31647987

RESUMEN

ß-thymosin family comprise a series of heat-stable multifunctional polypeptides involved in actin regulation, anti-inflammation, wound healing, cell migration, angiogenesis, cardiac protection, antimicrobial processes and antiviral immunity. The roles of Tß12 (thymosin-ß12) in marine invertebrates is still largely unknown, especially in terms of antibacterial immunity. In this study, we cloned the Tß12 gene with an ORF of 126 bp coding 41 amino acids from Urechis unicinctus. Tissue distribution analysis by qRT-PCR used TBP as reference gene showed that Tß12 was widely expressed in all tissues, and the transcript levels were the highest in the body wall, followed by the coelomic fluid, and the lowest in the intestines and anal sacs. After LPS (lipopolysaccharides) injection, Tß12 expression in the body was first elevated significantly at 3 h (p < 0.05), indicating that the body wall was the first defense line of the innate immune system; in the coelomic fluid, the Tß12 mRNA levels increased after LPS injection, with a significant increase occurring at 6 h, showing that coelomic fluid functioned as the second defense line of the innate immune system. In the midgut and anal sacs, a significant increase in the Tß12 level occurred at 24 h, suggesting that the midgut and anal sacs may act as accessory organs for the innate immune system. Moreover, U. unicinctus Tß12 recombinants can effectively inhibit the growth of both gram-negative and gram-positive bacteria. These results indicate that U. unicinctus Tß12 plays important roles in innate antibacterial immune responses, which can deepen our understanding of Tß12 in marine invertebrates.


Asunto(s)
Regulación de la Expresión Génica/inmunología , Inmunidad Innata , Poliquetos/inmunología , Timosina/inmunología , Animales , Especificidad de Órganos/genética , Especificidad de Órganos/inmunología , Poliquetos/genética , Timosina/genética
2.
Zootaxa ; 4611(1): zootaxa.4611.1.1, 2019 May 27.
Artículo en Inglés | MEDLINE | ID: mdl-31717089

RESUMEN

Samples of Pectinariidae in the Australian Museum and Museums of Victoria, Australia were examined. Thirteen species were identified, including three additional records of previously recorded species of Amphictene and two new species, A. cercusa n. sp. and A. undulata n. sp., two species of the genus Lagis which has not previously been recorded from Australia, including a new species, L. portus n. sp., and five additional records of previously recorded species of Pectinaria and one new species, P. ningalooensis n. sp. The study revealed additional characters which are useful to identify species of pectinariids, a pair of ear-shaped lobes which are adjacent to both sides of dorsal base of cephalic veil in species of Pectinaria and Amphictene, but in Lagis they are present between the buccal cavity and lateral margin of segment 1; and a pair of ventral lappets which have not previously been described on the lateral margin of segment I in all species of pectinariids from Australia. For species where numerous individuals were available for study, we investigated how some characters, change with increasing body size. A key to all recorded species from Australia is given, but does not imply any phylogenetic relationships.


Asunto(s)
Poliquetos , Distribución Animal , Estructuras Animales , Animales , Tamaño Corporal , Tamaño de los Órganos , Filogenia , Victoria
3.
Zootaxa ; 4604(3): zootaxa.4604.3.11, 2019 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-31717185

RESUMEN

A re-assessment of spionid specimens collected from coasts around the Iberian Peninsula and initially assigned to Dispio uncinata Hartman, 1951 and Prionospio multibranchiata Berkeley, 1927 resulted in the recognition of two new species from the genera Dispio and Prionospio: Dispio glandulosa sp. nov. and Prionospio (Minuspio) sanmartini sp. nov. In addition, the examination of specimens collected near the type locality of P. multibranchiata led to a re-description of this species. The specimens examined do not correspond to the material collected from the Iberian Peninsula and it is unlikely that P. multibranchiata is found in northern European waters.


Asunto(s)
Poliquetos , Animales , Europa (Continente)
4.
Zootaxa ; 4604(1): zootaxa.4604.1.9, 2019 May 13.
Artículo en Inglés | MEDLINE | ID: mdl-31717208

RESUMEN

The capitellid genus Leiocapitella is characterized by the possession of anterior 12-16 chaetigers exclusively with capillaries and the following 1-2 transitional chaetigers with notopodial capillaries and neuropodial hooded hooks. A new species was obtained from the continental shelf of the East China Sea, and is identified herein as Leiocapitella fujianensis. The new species differs from the other four described species by the number and location of transitional chaetigers, the dentition of abdominal hooks, and the methyl green stain on thorax. A key to all Leiocapitella species is provided in this paper.


Asunto(s)
Anélidos , Poliquetos , Animales , China
5.
Zootaxa ; 4688(4): zootaxa.4688.4.10, 2019 Oct 24.
Artículo en Inglés | MEDLINE | ID: mdl-31719433

RESUMEN

Over the last five decades, only two new species of Syllis (Syllidae, Annelida) have been described from South Africa, suggesting a greatly underestimated richness and the expectation that many more indigenous species still remain undescribed. In this paper, we describe three new species from algal turf along a rocky shore on the south coast of South Africa. All three species are characterised by having pseudo-simple chaetae by loss of blade and enlargement of shafts together with compound heterogomph bidentate falcigers. Syllis zahri sp. nov. (up to 5 mm long) is characterised by light pink to light brown colouration on its prostomium and anterior chaetigers, dark transverse bars that fade towards the posterior region, superior anterior chaetae having short spines and posterior parapodia with distally hollow aciculae. Syllis jaylani sp. nov. (up to 7 mm long) is narrow anteriorly, relatively wider at midbody and tapers posteriorly toward the pygidium, has a pharyngeal tooth slightly back from the anterior margin, strongly bidentate chaetae with teeth perpendicular to the main shaft, thin sinuose bidentate ventral simple chaetae with a serrated edge and pseudo-simple chaetae with a serrated edge in anterior parapodia. Syllis bunaa sp. nov. (up to 9 mm long) shows a characteristic dark brown colouration on its prostomium and anterior region, is distinctly rounded dorsally, and has unidentate or minutely bidentate chaetae, up to three pseudo-simple chaetae on parapodia along the whole body and posterior ventral simple chaetae that are thick with rounded tips or sinuose with a serrated inner edge.


Asunto(s)
Anélidos , Poliquetos , Animales , Sudáfrica
6.
Zootaxa ; 4686(4): zootaxa.4686.4.2, 2019 Oct 17.
Artículo en Inglés | MEDLINE | ID: mdl-31719468

RESUMEN

The present study deals with the diversity of the genus Paradoneis (Annelida: Paraonidae) from the Sea of Marmara. Examination of materials collected from various soft and hard substrata from depths between 10 and 1200 m in the region revealed the presence of four species, among which one was already known from the region (P. ilvana), one was a new record for the Sea of Marmara (P. armata) and other two (P. heterochaeta n. sp. and P. longifurcata n. sp.) were new to science. Paradoneis heterochaeta n. sp. is characterized mainly by having a proportionately large size, by its pigmentation on the body, by bearing minute notopodial postchaetal lobes and by possessing two types of lyrate chaetae. Paradoneis longifurcata n. sp. is mainly characterized by having weakly jointed notopodial postchaetal lobes and lyrate chaetae with the long branch being up to 4.5 times longer than the short branch. All species found in the area are described and discussed.


Asunto(s)
Anélidos , Mantódeos , Oligoquetos , Poliquetos , Animales
7.
Zootaxa ; 4637(1): zootaxa.4637.1.1, 2019 Jul 12.
Artículo en Inglés | MEDLINE | ID: mdl-31712490

RESUMEN

Abyssal polychaetes are usually difficult to be identified because they are small, their body patterns differ from their shallow water relatives, their delicate bodies are often damaged during sampling and sieving, and their taxonomy is in need of revision. Members of the family Fauveliopsidae Hartman, 1971 are widespread in deep ocean basins and they follow the above statements. In this contribution, we present a revision of all available type and non-type material for the family. Our objective is to provide keys to identify genera and species, as well as standardized diagnoses, and illustrations for most species, excluding those described since 2011, or where type material was not available. One genus, Riseriopsis n. gen., is proposed and four species are newly described. The Fauveliopsidae now includes 24 species in three genera: Fauveliopsis McIntosh, 1922 (13 species), Laubieriopsis Petersen, 2000 (8 species), and Riseriopsis n. gen. (3 species). Fauveliopsis includes species usually living inside gastropod or scaphopod shells or foraminiferan tubes, Laubieriopsis and Riseriopsis include species commonly regarded as free living, although some species of the latter have very long bodies and have been found inside soft tubes. Fauveliopsis includes: F. adriatica Katzmann Laubier, 1974, F. armata Fauchald Hancock, 1981, F. brattegardi Fauchald, 1972a, F. brevipodus Hartman, 1971, F. challengeriae McIntosh, 1922, F. glabra (Hartman in Hartman Barnard, 1960), F. jameoaquensis Núñez in Núñez, Ocaña Brito, 1997, F. levensteinae n. sp., F. magalhaesi n. sp., F. magna Fauchald Hancock, 1981, F. olgae Hartmann-Schröder, 1983, F. rugosa Fauchald, 1972b, and F. scabra Hartman Fauchald, 1971. Laubieriopsis includes: L. arenicola (Riser, 1987), L. blakei n. sp., L. brevis (Hartman, 1965), L. cabiochi (Amoureux, 1982), L. fauchaldi (Katzmann Laubier, 1974) n. comb., L. hartmanae (Levenstein, 1970) reinst., L. norvegica Zhadan Atroshchenko, 2012, and L. petersenae Magalhães, Bailey-Brock Rizzo, 2014. Riseriopsis includes: R. arabica (Hartman, 1976) n. comb., R. confusa (Thiel, Purschke Böggemann, 2011) n. comb., and R. santosae n. sp. Keywords. Deep-sea species, taxonomy, genital papillae, genera, species  Introduction The family-group name Fauveliopsidae was established by Hartman (1971) and derived from Fauveliopsis McIntosh, 1922. The genus-group name was dedicated to Pierre Fauvel, famous French polychaetologist, and the type species, F. challengeriae McIntosh, 1922, was described based on specimens collected during the HMS Challenger expedition. The phylogenetic affinities of fauveliopsids are unsettled in part due to the fact that only a few species have been included in past analyses; after the analysis of morphological and molecular characters (Zrzavý et al. 2009, figure 6), Fauveliopsidae groups with Cossuridae and Paraonidae, as a sister group to what has been regarded as Cirratuliformia (Cirratulidae, Acrocirridae, Flabelligeridae).            This family includes benthic species that are rarely abundant, and they tend to prefer silty bottoms. Most species have been described from deep-sea locations including trenchs (Menzies George 1967); however, a few shallow water species were described from the Canary Islands (5 m), New Zealand (20 m), and the Adriatic Sea (60 m). Members of the family are free living or find shelter in tubes of cemented silt grains (Blake Petersen 2000, Petersen 2000); they can also be found inside scaphopod, or gastropod mollusk shells, or inside tubular foraminiferans (Bathysiphon Sars, 1872). It should be noted, however, that typical Bathysiphon tests include sponge spicules, and that Psammosiphonella Avnimelech, 1952 was proposed for those agglutinated foraminiferans whose tests do not include sponge spicules; this latter genus has been regarded as distinct (Rögl 1995; Kaminski 2004; Kaminski et al. 2009). This is relevant because at least in some cases, as we show below, fauveliopsid tubes have a complex organization, such that other interpretations might be involved. Another interesting issue is that Malecki (1973) regarded these foraminiferan tests (Bathysiphon and Psammosiphonella) as polychaete tubes, because they lack the characteristic basal embryonic chamber, proloculus, which define foraminiferans. This idea was not followed and the above genera are still regarded as foraminiferans (Kaminski 2004).            Fauveliopsid bodies are subcylindrical, wider medially, or club-shaped; in the latter, the anterior region is the narrower one. Parapodia are displaced dorsally with notopodia being clearly dorsolateral, whereas neuropodia are lateral and chaetae are directed anteriorly, usually along anterior region, and it is related to free living species. The combination of a usually posterior wider region and the parapodial disposition, together with the presence of some anal papillae has made it difficult to assess body polarity and for some descriptions the body ends were incorrectly characterized (Laubier 1972:698; Hartman 1976:236, Fig. 12a). There are four morphological traits of typical polychaete body patterns that can explain this difficulty: 1) anterior region is wider than the rest of the body; 2) segments are less clear cut anteriorly; 3) chaetal bundles are displaced to the anterior border of each chaetiger, being displaced to the median region and eventually towards the posterior region in median to posterior chaetigers; and 4) chaetae are directed anteriorly in a few anterior chaetigers, and towards the posterior region in the rest of the body.            Surprisingly, these patterns are reversed among fauveliopsids because many have evolved to live within tubes, bending their bodies obliquely or ventrally, and by directing their chaetal bundles anteriorly (originally noticed by McIntosh 1922:6). These modifications could provide better anchoring for chaetae and parapodia. Inside gastropod shells, there are different conditions for what lies dorsally or ventrally; this might have selected for body modifications. For example, parapodia become dorsally displaced and this would enlarge ventral and lateral surface areas to be in close contact with the shell.            Katzmann Laubier (1974:10, Fig. 3C) showed that in some fauveliopsids the narrower region is exposed through the shell aperture. Blake Petersen (2000) clarified the body end confusion, standardized concepts about morphological features, and redescribed some species. However, earlier descriptions deserve re-evaluation because of a potential confusion of body ends. Riser (1987) provided some histological details and indicated that stomach contents consisted of foraminiferans and silt, whereas Purschke (1997) made SEM illustrations of nuchal organs.            Hartman (1971:1411) proposed Fauveliopsidae to include four genera that she regarded as flabelligerid-like: Bruunilla Hartman, 1971, Fauveliopsis, Flabelligella Hartman, 1965, and Flota Hartman, 1967. In a subsequent publication, Hartman (1974:199, 235) apparently changed her perspective and transferred Fauveliopsis to the Flabelligeridae; however, in a posthumous publication (Hartman 1978:175) she used the family as originally proposed.            The composition of the Fauveliopsidae has been modified over the years, with Orensanz (1974) transferring Flabelligella to Acrocirridae, Pettibone (1979) indicating that Bruunilla belongs in Polynoidae, and Buzhinskaja (1996) proposing an independent family for Flota. For the latter genus group name, Salazar-Vallejo Zhadan (2007) regarded it as a junior synonym of Buskiella McIntosh, 1885. The family was thus restricted to Fauveliopsis but it now also includes Laubieriopsis Petersen, 2000 and Riseriopsis n. gen.            Three major publications have addressed identification problems in Fauveliopsis. Katzmann Laubier (1974) prepared a key to species based upon the number of chaetigers, integument features and type of chaetae throughout body. Amoureux (1982) compiled the known species and pointed out their number of chaetigers. Hartmann-Schröder (1983) had a different approach and relied more on chaetal patterns than on number of chaetigers.            Because body ends were confused in some of the original descriptions, the species deserve reinterpretation. In order to standardize the morphological features, the diagnoses below combine these approaches and additional observations based upon specimens with some remarks about the match between previous descriptions and these standardized diagnoses, as made elsewhere for tropical American species (Salazar-Vallejo 2009).            In this contribution, we have dealt with all material available of fauveliopsid genera and species. We propose a new genus, Riseriopsis n. gen., to include two species of Fauveliopsis provided with long, posteriorly swollen bodies, with long segments along median region, and two known species are newly combined. Further, four species are newly described, and another one, Laubieriopsis hartmanae (Levenstein, 1970), is redescribed and reinstated.


Asunto(s)
Anélidos , Poliquetos , Animales , Femenino , Nueva Zelanda , Filogenia , España
8.
Zootaxa ; 4629(2): zootaxa.4629.2.1, 2019 Jul 05.
Artículo en Inglés | MEDLINE | ID: mdl-31712518

RESUMEN

Abyssal polychaetes of the family Cirratulidae were collected as part of reconnaissance and benthic impact experimental surveys at Clarion-Clipperton Fracture Zone manganese nodule sites in 1984 and 1993-1994. All specimens were collected from the 4500-4900 m depth range. Twelve species of Cirratulidae were identified, of which 11 are new to science. Aphelochaeta abyssalis n. sp., A. clarionensis n. sp., A. clippertonensis n. sp., A. spargosis n. sp., A. tanyperistomia n. sp., A. wilsoni n. sp., Caulleriella bathytata n. sp., Chaetozone akaina n. sp., C. grasslei n. sp., C. truebloodi n. sp. and Tharyx hessleri n. sp. Most of these species are small deposit-feeding threadlike worms that reside in the upper 5 cm of the sediment and represent a unique assemblage of abyssal taxa.


Asunto(s)
Anélidos , Poliquetos , Animales , Océano Pacífico
9.
Zootaxa ; 4579(1): zootaxa.4579.1.1, 2019 Apr 09.
Artículo en Inglés | MEDLINE | ID: mdl-31715705

RESUMEN

A large collection of mesoparasitic copepods from polychaete hosts collected in northern European waters was examined. The term mesoparasitic refers to highly transformed copepods where the adult female attaches by embedding part of its body in the host. Representatives of five known familes were found and a new family is established. A single new species, Bradophila minuta sp. nov., was described in the family Bradophilidae. It occurred exclusively on the flabelligerid Diplocirus glaucus (Malmgren, 1867). Two genera of the family Herpyllobiidae were represented: Herpyllobius Steenstrup Lütken, 1861 and Eurysilenium M. Sars, 1870. Herpyllobius arcticus Steenstrup Lütken, 1861 was found on at least five different polynoid hosts, two of which, Harmothoe fragilis Moore, 1910 and Antinoe sp., were new host records. A new species, H. cluthensis sp. nov. was described from Malmgrenia species in Scottish waters. The large species, Herpyllobius cordiformis Lützen, 1964, was collected in Arctic waters from Eunoe cf. oerstedi. It is the first report of this parasite in Europe. The common parasite H. polynoes (Krøyer, 1864) was found on six different polynoid hosts, three of which, Harmothoe bifera, Malmgreniella mcintoshi Tebble Chambers, 1982 and Eunoe ?barbata are new host records. Eurysilenium truncatum M. Sars, 1870 was collected from Eucranta villosa Malmgren, 1866, Eunone sp., and Gattyana cirrhosa (Pallas, 1766). The material from Eucranta villosa caught at 72.6ºN comprises both a new host record and is the most northerly report of this parasite. Specimens of Eurysilenium which differed from E. truncatum in a number of features were found on Harmothoe fragilis and H. impar (Johnston, 1839). A new family, the Pholoicolidae, is established to accommodate Pholicola chambersae gen. et sp. nov., parasitic on Pholoe pallida Chambers, 1985. The family Phyllodicolidae was represented by all three of its known species: Phyllodicola petiti (Delamare Deboutteville Laubier, 1960), Cyclorhiza eteonicola Heegaard, 1942 and C. megalova Gotto Leahy, 1988. The former was found on Eumida ockelmanni Eibye-Jacobsen, 1987, a new host record. A single ovigerous female of C. eteonicola was collected from a new host, Eteone spetsbergensis Malmgren, 1865. Cyclorhiza megalova was common on Eteone longa (Fabricius, 1780) and E. longa/flava complex. A rich diversity of members of the family Saccopsidae was found, including three known species of Melinnacheres M. Sars, 1870 plus nine new species placed in four new genera. Melinnacheres was represented by M. ergasiloides M. Sars, 1870, M. steenstrupi Bresciani Lützen, 1961 and M. terebellidis Levinsen, 1878. Melinnacheres ergasiloides was found on Melinna elizabethae McIntosh, 1914, M. steenstrupi on members of the Terebellides stroemi-complex and T. atlantis Williams, 1984, while M. terebellidis was found on the T. stroemi-complex and on T. shetlandica Parapar, Moreira O'Reilly, 2016. A new genus, Trichobranchicola gen. nov., was established to accommodate T. antennatus gen. et sp. nov., a parasite of Trichobranchus sikorskii Leontovich Jirkov in Jirkov, 2001, T. glacialis Malmgren, 1866 and Trichobranchus sp. The second new genus, Lanassicola gen. nov., was established to accommodate the type species, Lanassicola arcticus gen. et sp. nov. parasitic on Lanassa venusta (Malm, 1874), plus two additional species, L. bilobatus gen. et sp. nov. on Lanassa nordenskjoeldi Malmgren, 1866, and L. dorsilobatus gen. et sp. nov. on Proclea graffii (Langerhans, 1884). A new subfamily, Euchonicolinae, was established within the Saccopsidae to accommodate two new genera, Euchonicola gen. nov. and Euchonicoloides gen. nov. The type species of Euchonicola gen. nov. is E. caudatus gen. et sp. nov., a parasite of Euchone sp., and it includes two other species, E. linearis gen. et sp. nov. on Chone sp., and E. parvus gen. et sp. nov. on Euchone sp. The type species of Euchonicoloides gen. nov. is E. elongatus gen. et sp. nov. found on a host belonging to the genus Euchone, and it also includes Euchonicoloides halli gen. et sp. nov. from Jasmineira caudata Langerhans, 1880. Four species of the family Xenocoelomidae were found: Xenocoeloma alleni (Brumpt, 1897), X. brumpti Caullery Mesnil, 1915, X. orbicularis sp. nov. and Aphanodomus terebellae (Levinsen, 1878). Xenocoeloma alleni was found on four different species of Polycirrus and on Amaeana trilobata (M. Sars, 1863) and X. brumpti was found on Polycirrus norvegicus Wollebaek, 1912. Xenocoeloma orbicularis sp. nov. occurred only on Paramphitrite birulai (Ssolowiew, 1899). Aphanodomus terebellae was found on three hosts, only one of which, Leaena abranchiata was new.


Asunto(s)
Copépodos , Poliquetos , Animales , Europa (Continente) , Femenino , Océanos y Mares
10.
Zootaxa ; 4577(3): zootaxa.4577.3.7, 2019 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-31715713

RESUMEN

Two new Prionospio species-Prionospio solisi sp. nov. and Prionospio nonatoi sp. nov. and a new Laubieriellus species-Laubieriellus decapitata sp. nov. are described from Espírito Santo Basin, Southeast Brazil. For both Prionospio species, branchial pattern differed from the genus diagnosis, which is therefore emended. For Laubieriellus, a new species is described, and attention is drawn to the notch in the ventral crests, a structure that holds taxonomic value.


Asunto(s)
Anélidos , Poliquetos , Animales , Brasil
11.
Zootaxa ; 4577(2): zootaxa.4577.2.2, 2019 Apr 05.
Artículo en Inglés | MEDLINE | ID: mdl-31715721

RESUMEN

Capitellids are burrowing, earthworm-like polychaetes. The taxonomy within the group presents significant difficulties, due in part to their relative simplicity. In this study, a catalogue of the capitellid genus Notomastus M. Sars, 1851, is presented and a new species is described from the Southern Gulf of California: Notomastus mazatlanensis sp. nov. The catalogue provides original names and synonymies for 43 species; type locality and location of type materials; records and remarks on systematics and distribution. Type material of 35 species were examined, 31 from which were photographed to illustrate the catalogue. Notomastus mazatlanensis sp. nov. is established based on the presence of finger-like branchiae emerging from the epithelium near to the notopodia. Branchiae are composed by 3-4 filaments, and the first chaetiger is uniramous. A taxonomic key for species distributed in the Gulf of California is presented. [Species name is register in ZooBank under urn: lsid: zoobank.org: pub:CC8A9E5A-7810-4272-A23C-DCB054E5B4EB].


Asunto(s)
Anélidos , Oligoquetos , Poliquetos , Animales , California
12.
Zootaxa ; 4571(4): zootaxa.4571.4.3, 2019 Mar 28.
Artículo en Inglés | MEDLINE | ID: mdl-31715791

RESUMEN

Two of the species of Pectinariidae previously reported from the Brazilian coast are herein described, together with a new species and also new record for the genus Petta Malmgren, 1866 for the southern Atlantic. Amphictene catharinensis (Grube, 1870) was described from material from off Santa Catarina, southern Brazil, but the most recent description for these animals comes from Nilsson (1928); a redescription for A. catharinensis is herein provided. Pectinaria nonatoi n. sp. was informally described as P. (Pectinaria) laelia nomen nudum in an unpublished thesis and a formal description has never been provided, although the species has been reported from several other localities off the Brazilian shoreline, mostly in ecological studies; the species is formally described herein and compared to the most similar congeners. Petta alissoni n. sp. is also described and compared to the most similar congeners and this is the first record for animals of this genus from southern Atlantic. There are also records for Pectinaria gouldii (Verrill, 1874) and P. regalis Verrill, 1901 from off the Brazilian coast, and a doubtful record for Lagis pseudokoreni (Day, 1955), but we did not find any material belonging to those taxa.


Asunto(s)
Anélidos , Orchidaceae , Poliquetos , Distribución Animal , Animales , Brasil
13.
Zootaxa ; 4571(4): zootaxa.4571.4.7, 2019 Mar 28.
Artículo en Inglés | MEDLINE | ID: mdl-31715795

RESUMEN

The family Flabelligeridae was previously represented in Tunisia by four genera including four species: Bradabyssa villosa (Rathke, 1843), Therochaeta flabellata (M. Sars in G.O. Sars, 1872), Pherusa plumosa (Müller, 1776), and Piromis eruca (Claparède, 1869). In this paper we report a fifth genus, Trophoniella, for the first time in Tunisia. The specimens were collected in Radés Station, Gulf of Tunis (Central Mediterranean) and belong to a new species, namely Trophoniella radesiensis n. sp., which is characterized by having: (1) a very smooth tunic, body covered dorsally, ventrally, and laterally by sediment grains (except in the posterior region), and (2) well-developed parapodia showing short neurohooks from chaetiger 6 to 19 and anchylosed neurohooks from chaetiger 20. Based on the 16S, the new species belongs to a low supported Piromis/Trophoniella clade and shows a 16.1% of genetic distance from Trophoniella hephaistos Jimi Fujiwara, 2016, the single known species of the genus sequenced to date. [Zoobank lsid: urn:lsid:zoobank.org:act:D7C85C70-87FF-4AF4-8599-A8462B3FB8B1].


Asunto(s)
Anélidos , Poliquetos , Animales , Túnez
14.
Zootaxa ; 4571(1): zootaxa.4571.1.8, 2019 Mar 25.
Artículo en Inglés | MEDLINE | ID: mdl-31715834

RESUMEN

The genus Naineris differs from other genera of the Orbiniidae in that all its species possess a rounded prostomium and one or two achaetous rings. Currently, 21 species of this genus have been described worldwide, five of which are recorded from Brazil. Naineris aurantiaca is the only species originally described from the Brazilian coast and the original description is the only record of this species. The description is short and vague, making identification difficult. From recent samples obtained in the type locality of Florianópolis, Brazil, we were able to study specimens of Naineris aurantiaca and redescribe the species. Diagnostic characters for this species are the presence of pre- and post-branchial papillae, anterior branchiae in thoracic segments considerably smaller than those of the rest of the body, distinct dorsal sensory organ from chaetiger 12 onwards, the chaetal arrangement of the thoracic neuropodia (crenulated capillaries in a lower oblique row, uncini in an upper oblique row, subuluncini in two anterior transverse rows, and acicular spines in a posterior row), interramal papillae only present on abdominal parapodia, and the presence of furcate chaetae in the abdominal notopodia. Here, we designate a neotype for the species and discuss the morphological variations we observed among specimens.


Asunto(s)
Anélidos , Poliquetos , Abdomen , Distribución Animal , Animales , Brasil
15.
Zootaxa ; 4568(2): zootaxa.4568.2.6, 2019 Mar 20.
Artículo en Inglés | MEDLINE | ID: mdl-31715860

RESUMEN

Here we describe two new species in the genus Branchiosyllis Ehlers, 1887 associated with sponges. Branchiosyllis belchiori sp. nov. was found in Todos os Santos Bay, state of Bahia, and in the Fernando de Noronha Island (Northeastern Brazil), and Branchiosyllis gonzaguinhai sp. nov. was found in the Fernando de Noronha Island and Rocas Atoll. We compare the species herein described with their morphologically most similar congeners and provide a synoptic table of the morphological variation among the type-series of the two new species. An identification key for the species of Branchiosyllis recorded in Brazil is also provided.


Asunto(s)
Anélidos , Poliquetos , Animales , Brasil , Islas
16.
Zootaxa ; 4567(3): zootaxa.4567.3.2, 2019 Mar 18.
Artículo en Inglés | MEDLINE | ID: mdl-31715882

RESUMEN

The monotypic genera Lycastonereis Rao, 1981 and Ganganereis Misra, 1999, and their respective species L. indica Rao, 1981 and G. sootai Misra, 1999, have unique morphological traits, and are only known from India and nearby countries. Lycastonereis is diagnosed by having three pairs of anterior cirri and biramous parapodia, whereas for Ganganereis the pharynx has partially sclerotized papillae arranged in a semi-continuous row in the maxillary ring, and chaetae include only spinigers throughout the body. The morphology of these species is not adequately understood as shown by their exclusion in phylogenetic analyses, and therefore an additional morphological evaluation is needed. The re-evaluation of the genera is based upon three specimens of L. indica and the original description of G. sootai. It is shown that L. indica has rounded papillae present in both maxillary and oral rings (not restricted to the oral ring), and in all areas except area V, and neuroacicular ligules are bilobed (not the postchaetal lobes). In addition, G. sootai is morphological similar to species of Paraleonnates Khlebovich Wu, 1962, mainly in the arrangement and kind of structures of the pharynx, parapodial morphology, and chaetae; therefore, G. sootai is transferred to Paraleonnates, and Ganganereis is regarded as a junior synonym of Paraleonnates. A key to species of Paraleonnates is included.


Asunto(s)
Anélidos , Poliquetos , Animales , India , Fenotipo , Filogenia
17.
Zootaxa ; 4674(2): zootaxa.4674.2.7, 2019 Sep 24.
Artículo en Inglés | MEDLINE | ID: mdl-31716015

RESUMEN

A new species of the Marphysa sanguinea group, M. iloiloensis n. sp. (Annelida: Eunicida: Eunicidae), is described from the Marine Annelids Hatchery of the Southeast Asian Fisheries Development Center, Aquaculture Department (SEAFDEC- AQD), Iloilo Province, Philippines. It represents the first record of this group in the Philippines. The new species is most similar morphologically to M. hongkongensa Wang, Zhang Qiu, 2018, but can be distinguished from it by having fewer branchial filaments, a pair of faint eyes (absent in M. hongkongensa), and in slight differences in jaw morphology and chaetation. The embryos of the new species develop inside a jelly cocoon attached to the entrance of the adult burrow; this is the first time that egg-containing cocoons have been found in any species of the sanguinea-group. Phylogenetic analysis based on the mitochondrial gene cytochrome c oxidase subunit I (COI) revealed that Marphysa iloiloensis n. sp. is genetically distinct from all other analysed Marphysa species and forms a sister group to M. hongkongensa. A revised identification key to members of the sanguinea-group in Southeast Asia is provided.


Asunto(s)
Anélidos , Poliquetos , Animales , Genes Mitocondriales , Filipinas , Filogenia
18.
Zootaxa ; 4671(3): zootaxa.4671.3.1, 2019 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-31716040

RESUMEN

Fifteen species in seven genera of Cirratulidae are reported from shallow-water collections in the Caribbean Sea primarily as part of the Caribbean I expedition of the research vessel Alpha Helix in 1977 and smaller separate collections from Panama and Venezuela. Thirteen species, all bitentaculates, are new to science. New species include Aphelochaeta caribbeanensis n. sp.; six species of Caulleriella: C. angusticrista n. sp., C. convexacapa n. sp., C. microbidentata n. sp., C. parapicula n. sp., C. parvinasa n. sp., and C. quadrata n. sp.; Chaetozone dossena n. sp.; three species of Kirkegaardia: K. filiformis n. sp., K. panamaensis n. sp., and K. playita n. sp.; and two species of Dodecaceria: D. alphahelixae n. sp. and D. dibranchiata n. sp. Additionally, two multitentaculate cirratulids, Cirriformia sp. from Panama and Timarete punctata (Grube, 1859) from Nicaragua are reported.


Asunto(s)
Poliquetos , Animales , Región del Caribe
19.
Zootaxa ; 4664(2): zootaxa.4664.2.1, 2019 Sep 03.
Artículo en Inglés | MEDLINE | ID: mdl-31716675

RESUMEN

Trichobranchidae from French waters are revised based on material available in French marine stations and newly collected specimens. This research is the first part of the "Spaghetti Project" aiming to revise French species of terebellids and trichobranchids. It confirms the absence of the so-called cosmopolitan species Terebellides stroemii from French waters, and describes eight new species of Terebellides: T. bonifi n. sp., T. ceneresi n. sp., T. europaea n. sp., T. gentili n. sp., T. gralli n. sp., T. lilasae n. sp., T. parapari n. sp. and T. resomari n. sp. and one species of Trichobranchus: T. demontaudouini n. sp. using both morphological and molecular tools. An identification key for all European species of Trichobranchidae is provided.


Asunto(s)
Poliquetos , Distribución Animal , Animales
20.
Zootaxa ; 4652(3): zootaxa.4652.3.4, 2019 Aug 09.
Artículo en Inglés | MEDLINE | ID: mdl-31716856

RESUMEN

A new galeommatid bivalve, Montacutona sigalionidcola sp. nov., is described from an intertidal flat in the southern end of the Kii Peninsula, Honshu Island, Japan. Unlike other members of the genus, this species is a commensal with the burrowing scale worm Pelogenia zeylanica (Willey) (Annelida: Sigalionidae) that lives in fine sand sediments. Specimens were always found attached to the dorsal surface of the anterior end of the host body. This species has a ligament lithodesma between diverging hinge teeth, which is characteristic of Montacutona Yamamoto Habe. However, it is morphologically distinguished from the other members of this genus in having elongate-oval shells with small gape at the posteroventral margin and lacking an outer demibranch. Molecular phylogenetic analysis based on the four-gene combined dataset (18S + 28S + H3 + COI) indicated that this species is monophyletic with Montacutona, Nipponomontacuta Yamamoto Habe and Koreamya Lützen, Hong Yamashita, which are commensals with sea anemones or Lingula brachiopods. This result suggests that host shifting across different phyla occurred at least twice in this clade.


Asunto(s)
Anélidos , Bivalvos , Poliquetos , Animales , Japón , Filogenia
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