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Variación entre a?os de la fauna de parásitos metazoos de Sciaena deliciosa (Tschudi, 1846) (Perciformes: Sciaenidae) en Lima, Perú
Iannacone,José; Morón,Luis; Guizado,Sandra;
Latin american journal of aquatic research , 2010,
Abstract: the community structure of parasites on sciaena deliciosa (tschudi, 1846), is evaluated and eventual changes are analyzed in the composition, richness, diversity, prevalence and mean intensity of parasite communities on fish specimens that were similar in body length but were sampled 20 years apart (august 1987 to july 1988 vs. august to september 2008) in lima, perú. metazoan parasites were collected and counted employing conventional techniques. total abundance was 1.7 (0-13) and parasite species richness was 0.7 (0-2 parasite species per fish). thirsty hosts (60%) were infected by at least with one parasite. seven parasite taxa were found: two monogeneans (cynoscionicola sciaenae, hargicotyle sciaenae), a digenean (helicometra fasciata), a nematode (dycheline amaruincai), an acanthocephalan (tegorhynchus sp.), and two copepods (caligus callaoensis, lernanthropus huamani). this comparative analysis (parasites of s. deliciosa in 1987-1988 vs in 2008), showed a decreased prevalence of tegorhynchus sp., d. amaruincai, bomolochus peruensis, and neobrachiella oralis. the mean intensity increased for c americana and tegorhynchus sp. and diminished for c callaoensis. differences between years could be influenced by variations of sea temperature that affect larval stages and/or copepod reproduction over the course of the study period and size of the sample.
Chromosomes of Girella laevifrons (Tschudi 1846) (Osteichthyes: Kyphosidae)
Northland-Leppe,Irma; Véjar,Drina; Jara-Seguel,Pedro; Fuentes,Nelson; Nú?ez,Cristian;
Gayana (Concepción) , 2010, DOI: 10.4067/S0717-65382010000200007
Abstract: the chromosome number and karyotype morphology of girella laevifrons (tschudi 1846) are described for the first time. g. laevifrons presents a chromosome number of 2n = 48 and its karyotype is formed in both sexes by 24 acrocentric chromosome pairs, similar to what has been described for other species of girella gray, 1835.
Chromosomes of Girella laevifrons (Tschudi 1846) (Osteichthyes: Kyphosidae) Cromosomas de Girella laevifrons (Tschudi 1846) (Osteichthyes: Kyphosidae)  [cached]
Irma Northland-Leppe,Drina Véjar,Pedro Jara-Seguel,Nelson Fuentes
Gayana (Concepción) , 2010,
Abstract: The chromosome number and karyotype morphology of Girella laevifrons (Tschudi 1846) are described for the first time. G. laevifrons presents a chromosome number of 2n = 48 and its karyotype is formed in both sexes by 24 acrocentric chromosome pairs, similar to what has been described for other species of Girella Gray, 1835. El número cromosómico y la morfología del cariotipo de Girella laevifrons (Tschudi 1846) son descritos por primera vez. G. laevifrons presenta un número cromosómico 2n = 48 y su cariotipo está constituido por 24 pares de cromosomas acrocéntricos en ambos sexos, similar a lo documentado previamente para otras especies del género Girella Gray, 1835.
Metazoos parásitos de la mojarrilla Stellifer minor (Tschudi) (Osteichthyes, Sciaenidae) capturados por pesquería artesanal en Chorrillos, Lima, Perú
Iannacone, José;
Revista Brasileira de Zoologia , 2004, DOI: 10.1590/S0101-81752004000400015
Abstract: a research on some community components of parasitefauna of 105 specimens of stellifer minor (tschudi, 1844) collected from chorrillos fishmarket, lima, peru, between may and october 1998 and necropsied to study parasite communities was conducted. of the fishes collected, 71 were males and 34 females. fishes showed a standard length between 10.20 and 20.50 cm (mean = 15.50 ± 1.65). metazoan parasites were collected and counted employing conventional techniques. 3483 specimens in total during all the survey, with a mean abundance of 33.17 (3-122) were collected. the mean parasite species richness was 1.9 (1-4). one host was not parasited. twenty hosts (19.04%) showed infection with one parasite species, and seventy-seven (73.33%) and seven (6.66%) had multiple infection, two and three parasite species, respectively. five parasites: rhamnocercus oliveri luque & iannacone, 1991 and r. stelliferi luque & iannacone, 1991 (monogenea) (prevalence = 98.09%; mean intensity = 28.85; mean abundance = 28.58), clavellotis dilatata (kroyer, 1863) (copepoda) (prevalence = 2.85%; mean intensity = 1; mean abundance = 0.02), helicometra fasciata (rudolphi, 1819) (digenea) (prevalence = 79.04%; mean intensity = 5.66; mean abundance = 4.47) and procamallanus (spirocamallanus) pereirai annereaux, 1946 (nematoda) (prevalence = 4.76%; mean intensity = 1.6; mean abundance = 0.07) were found. effect of the sex on mean intensity and abundance of infection of rhamnocercus monaco, wood & mizelle, 1954 and also effect of sex with mean abundance of infection with h. fasciata were found. the mean diversity in the infracommunities of s. minor was (h') = 0.11 and simpson index (c) = 0.98. finally, the results of community assemblages with the parasite communities registered on s. minor ten years ago in the same locality of study were compared.
Feeding habits of Stellifer rastrifer (Perciformes, Sciaenidae) at Guaratuba mangrove, Parana, Brazil
Chaves, Paulo de Tarso C.;Vendel, Ana Lúcia;
Brazilian Archives of Biology and Technology , 1998, DOI: 10.1590/S1516-89131998000400006
Abstract: feeding habits of stellifer rastrifer (perciformes, sciaenidae) at guaratuba mangrove, parana, brazil, were studied from february 1996 to february 1997. it was observed that its diet was based on invertebrates, mainly decapoda non-brachyura and polychaeta. in a smaller proportion there were plants, copepoda, gammaridea and mollusca. the level of contribution of each food item changed according to the season and the individual size. such plasticity in feeding behaviour was similar to that described to some fish populations from other estuaries, and could be an indicator of the high level of instability presented by this kind of ecosystem.
The genus lobatostoma (Trematoda: Aspidocotylea) in the pacific coast of South America, with description of Lobatostoma veranoi new species, parasite of Menticirrhus ophycephalus (Teleostei: Sciaenidae)
Oliva, Marcelo E.;Luque, Jose L.;
Memórias do Instituto Oswaldo Cruz , 1989, DOI: 10.1590/S0074-02761989000200004
Abstract: the presence of three aspidocotyleans trematodes in marine fishes from perú and chile is reported. one of them, lobatostoma veranoi from the intestine of menticirrhus ophicephalu (sciaenidae) is considered a new species. distinct characteristcs of the new species are:a cirrus sac smaller than the pharynx; tail overlapping posteriorly the ventral disk; testis in the last third of the body and the presence of 64-66 marginal alveoli. the two other species are lobatostoma pacificum manter, 1940 found in trachinotus paitensis cuvier, 1830 from perú and chile and lobatostoma anisotremum oliva & carvajal, 1984 from the intestine of anisotremus scapularis (tschudi, 1844) from perú.
Kudoa sciaenae (Myxozoa: Multivalvulidae) cysts distribution in the somatic muscles of Stellifer minor (Tschudi, 1844) (Pisces: Sciaenidae)
Oliva, Marcelo;Luque, Jose Luis;Teran, Luz;Llican, Leonardo;
Memórias do Instituto Oswaldo Cruz , 1992, DOI: 10.1590/S0074-02761992000100006
Abstract: the distribution of kudoa sciaenae cysts (myxozoa), in terms of intensity and prevalence, in the somatic muscles of the sciaenid stellifer minor, shows an apparent preference for the anterior body region, including the head. the observed preference seems to be a consequence of the differential distribution of muscle mass, in the defined area, because when density (cyst/g dry muscle), is considered, all the somatic areas, but not cephalic area, do no show significant differences in terms of mean intensity and prevalence.
The metazoan parasites of Stellifer minor (Tschudi, 1844): an ecological approach
Oliva, Marcelo E.;Luque, Jose L.;Iannacone, Jose A.;
Memórias do Instituto Oswaldo Cruz , 1990, DOI: 10.1590/S0074-02761990000300003
Abstract: a quantitative and qualitative analysis of the parasite fauna of the sciaenid stellifer minor (tschudi) from chorrillos, peru, was made. some characteristics of the infectious processes, in terms of intensity and prevalence of infection, as a function of host sex and size, are given. moreover, comments on the characteristics of the parasite fauna, related with host role in the marine food webs are included. the parasite fauna of stellifer minor taken of chorrillos, peru, include the monogeneans pedocotyle annakohni, pedocotyle bravoi, rhamnocercus sp. and cynoscionicola sp., the digenean helicometra fasciata, the adult acantocephalan rhadinorhynchus sp. and the larval corynosoma sp., the nematode procamallanus sp., the copepods caligus quadratus, clavellotis dilatata and bomolochus peruensis and one unidentified isopod of the family cymothoidae. a distinctive characteristic of the parasite fauna (metazoa) of s. minor is the almost absence of larval forms.
Musculatura de los arcos branquiales, arco hioedeo y opérculo en peces sciaenidae del Atlantico oeste y rios de America
Aguilera, Orangel;
Revista Brasileira de Zoologia , 1987, DOI: 10.1590/S0101-81751987000200002
Abstract: a musculatura que serve aos arcos branquiais, arco hióideo e opérculo nos 22 gêneros marinhos do atlantico oeste e nos 4 gêneros dos rios da américa se caracterizam por apresentar a origem, percurso e inser??o das se??es e subse??es musculares de maneira geral comum para todos os sciaenidae estudados. porém, existem algumas varia??es relacionadas principalmente com o grau de desenvolvimento desta musculatura, que para efeitos da descri??o permite o agrupamento dos diferentes gêneros em três (3) grupos, o grupo "macrodon" (macrodon, cynoscion, larimus, nebris, isopistus, plagioscion, lonchurus, stellifer, odontoscion, bairdiella e corvulla), grupo "micropogonias" (micropogonias, umbrina, equetus, pareques, leiostomus, sciaena, ctenosciaena, pachyurus, pachypops, menticirrhus, paralonchurus e ophioscion) e grupo "pogonias" (pogonias e aplodinotus), mas este último se afasta do padr?o geral devido à fus?o dos quintos ceratobranquiais e ao desenvolvimento de um processo ventral no mesmo que determina algumas varia??es críticas a respeito da origem e inser??o dos músculos que o servem.
Secondary Metabolites from Scorzonera undulata ssp. deliciosa (Guss.) Maire (Asteracae) and Their Antioxidant Activities  [PDF]
Brahim Harkati,Salah Akkal,Christine Bayat,,Hocine Laouer
Records of Natural Products , 2010,
Abstract: From the shade-dried and powdered roots of S. undulata ssp. deliciosa eight known compounds; β-Amyrin acetate, methyl Oleanate, methyl Ursolate, Stigmasterol, β-Sitosterol, Galangustin, Coumarin-O-β-glycoside and Acteoside were isolated. Their structures were elucidated on the basis of extensive spectroscopic analysis, including 1D and 2D NMR, chemical transformation and comparison with the related known compounds. This is the first report of occurrence of these compounds in S. undulate ssp. deliciosa. The methanol extract of the roots of S. undulata ssp. deliciosa was examined for in vitro antioxidant properties using DPPH test (radical scavenging). .
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