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| Registros recuperados: 82 | |
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| Castro,Larissa A. M. de; Silva-Neto,Inácio D. da; Paiva,Thiago da S.. |
| ABSTRACT Physiological reorganization is described for the first time for the hypotrich ciliate genus Apoamphisiella Foissner, 1997, based on a population of A. vernalis (Stokes, 1887) Berger, 2006 collected from an eutrophic pond in the state of Minas Gerais, Brazil. Stomatogenesis is epiapokinetal, and the cirral pattern reorganizes from six typical fronto-ventral-transverse primordia, plus at least one short primordium located between IV and V. Primordia I and II originate from disaggregating undulating membranes and buccal cirrus, respectively; primordium III originates from left frontoventral cirrus plus a streak of basal bodies extending from the anterior end of oral primordium; primordium IV and the short extra primordia are formed from basal bodies... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Dorsomarginalia; Morphogenesis; Ontogeny; Spirotrichea. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100212 |
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| Faillettaz, Robin; Johnson, Eve; Dahlmann, Patrick; Syunkova, Alexandra; Stieglitz, John; Benetti, Daniel; Grosell, Martin; Paris, Claire B.. |
| Understanding the orientation behavior and capabilities in early life history (ELH) of fishes is critical for studying their dispersal but has, surprisingly, never been tested in any pelagic species. We here investigate the ontogeny of orientation and swimming abilities of the pelagic Coryphaena hippurus Linnaeus, 1758 larvae, hereafter mahi-mahi, through their ELH stages using the Drifting In Situ Chamber (DISC) in a laboratory setup. The DISC was deployed in a large (3 m3) circular aquarium in order to control the stimulus perceived by the fish and to identify behavioral response at the individual, developmental stage, and population levels. A total of 79 individual ranging from 7 to 23 days post hatch and from preflexion to early juvenile stages were... |
| Tipo: Text |
Palavras-chave: S: early life history stages; Coryphaena hippurus; Common dolphinfish; Mahi-mahi; Behavior; Orientation; Phototaxism; Ontogeny; Directionality competence. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00654/76610/77760.pdf |
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| Pham, Dominique; Charmantier, Guy; Wabete, Nelly; Boulo, Viviane; Broutoi, Francis; Mailliez, Jean-rene; Peignon, Jean-marie; Charmantier-daures, Mireille. |
| The ontogeny of osmoregulationwas investigated in Litopenaeus stylirostris by studying salinity tolerance and osmoregulatory capacity. Shrimp at different larval and postlarval stages were exposed to various salinities and survival was monitored for 24 h. Survival rates exceeded 80% at salinity over 25 ppt (750 mOsm.kg(-1)) at all the stages. At salinities below to 25 ppt, salinity tolerance was higher in nauplii and zoeae than in mysis larvae. Postlarval stages were able to withstand lower salinities, e.g. 6.0 ppt (176 mOsm.kg(-1)) at PL9 stage, but they were more sensitive than larvae to salinities over 35 ppt (1035 mOsm.kg(-1)). Zoea and mysis larvae slightly hyper-regulated at all tested salinities. After metamorphosis, postlarvae progressively... |
| Tipo: Text |
Palavras-chave: Penaeid; Litopenaeus stylirostris; Ontogeny; Osmoregulation; Growth. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00107/21843/20058.pdf |
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| Castro-ruiz, Diana; Mozanzadeh, Mansour Torfi; Fernández-méndez, Christian; Andree, Karl B.; García-dávila, Carmen; Cahu, Chantal; Gisbert, Enric; Darias, Maria J.. |
| The aim of the study was to evaluate the functional ontogeny of the digestive system of Pseudoplatystoma punctifer through the analysis of the activity of the main intestinal (alkaline phosphatase, aminopeptidase N, maltase and leucine-alanine peptidase), pancreatic (trypsin, chymotrypsin, total alkaline proteases, bile-salt activated lipase and amylase) and gastric (pepsin) enzymes. Larvae were raised in triplicate in a recirculation system from 4 to 27 days post fertilization (dpf) at an initial density of 90 larvae L−1, 27.8 ± 0.7 °C and 0 L: 24D photoperiod. Larvae were fed from 4 to 17 dpf with Artemia nauplii and weaned onto an experimentally formulated feed (crude protein content ~ 45%; crude fat content ~ 10%; crude carbohydrate ~ 8%) within... |
| Tipo: Text |
Palavras-chave: Pseudoplatystoma punctifer; Ontogeny; Enzymatic activity; Digestive system; Brush border; Pancreatic enzymes; Gastric enzymes. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00479/59082/61723.pdf |
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| Day, Louise; Kopp, Dorothee; Robert, Marianne; Le Bris, Hervé. |
| Human activities affect continental shelves, especially due to the harvest of living marine resources. Understanding their functioning and dynamics has become a growing concern in recent decades, especially through use of trophic modelling approaches. Studying the feeding ecology of key component species also improves this understanding by providing accurate information on trophic processes, particularly the dependence on trophic pathways. This study focuses on the trophic ecology of four large gadiforms (cod, haddock, whiting and hake) found on the continental shelf of the Celtic Sea. The study combines information on recently ingested prey (gut content analysis) and a more integrated indicator of food sources (stable isotope analysis). Two size classes... |
| Tipo: Text |
Palavras-chave: Celtic Sea; Feeding; Gut content; Stable isotopes; Ontogeny; Habitat comparison. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00486/59742/62839.pdf |
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| Pérez, Evaristo; Linares, Fátima; Rodríguez Villanueva, José; Vilar, Antonio; Mylonas, Constantinos; Fakriadis, Ioannis; Papadaki, Maria; Papandroulakis, Nikos; Papadakis, Ioannis; Robles, Rocío; Fauvel, Christian; Roo, Javier; Peleteiro, José; Lluch, Nuria; Pazos, Gema; Méndez, Belén; Sigelaki, Irini; Gómez, Castora; Pérez, Montse; Álvarez-blázquez, Blanca. |
| Four different wreckfish (Polyprion americanus) broodstock batches were maintained in research facilities under different photo and thermo-period conditions, one in Greece, the Helenic Center for Marine Research (HCMR, n = 3) and three in Spain: Instituto Español de Oceanografía (IEO, n = 13) in Vigo, Aquarium Finisterrae (MC2, n = 21) in A Coruña and Consellería do Mar (CMRM, n = 11). The CMRM includes two centers that work together: Instituto Galego de Formación en Acuicultura (IGAFA) and Centro de Investigacións Mariñas (CIMA), both in Pontevedra. During the five years of the project DIVERSIFY (Exploring the biological and socio-economic potential of new-emerging candidate fish species for the expansion of the European aquaculture industry, 2013–2018)... |
| Tipo: Text |
Palavras-chave: Wreckfish; Broodstock; Larval husbandry; Nutrition; Natural spawns; Live prey; Lipid profile; Ontogeny. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00660/77192/78615.pdf |
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| Lorin, N; Boulo, Viviane; Bodinier, C; Charmantier, G. |
| This study combines a cellular and molecular analysis of the Na+/K+/2Cl(-) cotransporter (NKCC) to determine the osmoregulatory role of this protein in different tissues during the ontogeny of the sea bass. We have characterized the complete sequence of the NKCC1 isoform isolated from the sea bass gills and have identified, by immunofluorescence, NKCC1, and other isoforms, within the epithelium of the major osmoregulatory organs. Different (absorptive and secretory) functions have been attributed to this protein according to the tissue and salinity. The effects of short- (1-4 days), medium- (7-21 days) and long (6 months)-term freshwater (FW) adaptations were investigated, in comparison with seawater (SW)-maintained sea bass. In adult sea bass after... |
| Tipo: Text |
Palavras-chave: Quantitative expression; Immunofluorescence; Osmoregulation; Ontogeny; Dicentrarchus labrax; Na+/K+/2Cl( ) cotransporter. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-3531.pdf |
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| Hubans, Barbara; Chouvelon, Tiphaine; Begout, Marie-laure; Biais, Gerard; Bustamante, Paco; Ducci, Lillian; Mornet, Francoise; Boiron, Anne; Coupeau, Yann; Spitz, Jerome. |
| In the north-eastern Atlantic, meagre (Argyrosomus regius) is one of the largest fish living on the shelf and this species has important commercial interest. Over the past two decades, large variations in meagre abundance have been observed with pluri-annual cycles but the factors involved in such variations are still unclear. Trophic interactions between meagre and other species (both prey and competitors) might be one explanatory variable of the observed variations in meagre recruitment and abundance. In the present study, we described the diet of commercial-size meagre in the Bay of Biscay from stomach content and stable isotope analyses, and explored its dietary ontogeny. We found that commercial-size meagres were mostly piscivorous with a diet... |
| Tipo: Text |
Palavras-chave: Diet; SIAR; Ontogeny; Marine top predators; Sciaenidae. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00384/49531/50028.pdf |
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| Laming, Sven; Gaudron, Sylvie M.; Duperron, Sebastien. |
| Mussels within the subfamily Bathymodiolinae, in particular the larger Bathymodiolus species (sensu lato) thriving at cold seeps and hydrothermal vents, are among the most iconic fauna to colonize deep-sea reducing habitats globally. Fuelled by energy derived from chemosynthetic symbioses, their contribution to ecosystem productivity is conspicuous, with many bathymodioline species forming dense, extensive aggregates. Chemosymbiotic mussels play crucial roles as ecosystem engineers, both through the formation of spatially heterogeneous biogenic reefs and in redistributing reduced-fluid emissions. The notable absence of Bathymodiolinae outside of reducing ecosystems affirms their dependency on these ephemeral habitats, placing spatiotemporal constraints on... |
| Tipo: Text |
Palavras-chave: Ontogeny; Bathymodiolinae; Nutrition; Development; Larvae; Symbiosis; Reducing habitats. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00477/58915/61478.pdf |
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| Tovar, Dariel. |
| The interest in probiotics for aquaculture is increasing rapidly. In the present work we evaluated the potential of some yeast to induce the larvae gut maturation in sea bass larvae Dicentrarchus labrax. The production of polyamines putrescine, spermidine and spermine was quantified in ten yeast strains using high performance liquid chromatography (HPLC). Afterwards, fluorescently labelled yeast adhesion to the intestine of sea bass larvae and the spotted sand bass (Paralabrax maculatofasciatus) was evaluated by fluorescent microscopy. Two of them, CBS 8339 strain (Debaryomyces hansenii) and X2180 strain (Saccharomyces cerevisiae) produce the polyamines of our interest. The same strains showed the best adhering capabilities to the sea bass and spotted sand... |
| Tipo: Text |
Palavras-chave: Ontogeny; Digestive enzymes; Fish larvae; Polyamines; Probiotics; Ontogénèse; Enzymes digestives; Larves de poisson; Polyamines; Probiotiques. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/these-103.pdf |
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| Lamonica,Rita de Cássia; Abrahao-Charles,Henrique; Loguercio,Mariana Fiuza de Castro; Rocha-Barbosa,Osear. |
| The anaconda Eunectes murinus (Linnaeus, 1758) inhabits large hydrographic basins in tropical America and figures among the world's largest snakes, attaining a length of 12 m. This study analyzed the growth of three female anaconda siblings, with records from their birth in captivity up to around 14 months of age. The snakes were kept in a controlled environment with constant temperature and data related to biometry, feeding and skin shedding were recorded. At the end of these 445 days, the siblings had grown on average 2.6 times their initial length and increased their initial weight by 3830.lOg, incorporating about 43.5% of total food ingested to their body mass. They showed a total of 0.69 skin sheddings per month in that period, and did not exhibit... |
| Tipo: Journal article |
Palavras-chave: Anaconda; Biometry; Litter; Ecdysis; Ontogeny. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000100014 |
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| Hohl,Leandro dos S. L; Sicuro,Fernando L; Azorit,Concepción; Carrasco,Rafael; Rocha-Barbosa,Oscar. |
| Morphological variation of the ramus mandibulae of wild Sus scrofa was described and correlated to sex and age differences. Young forms (n=27, 15 males, 12 females) and adults (n=23, 13 males, 10 females) were analyzed through Geometric Morphometrics (2-D) to assess differences between groups. We found significant differences between age- and sex-related shape variations at ramus mandibulae level. Young wild boars present bulky angular process with backward oriented coronoid process, while adults show slender jaw vertical ramus, and orthogonally oriented coronoid process. The ramus mandibulae in female wild boars is more robust and bulky than in males. The morphological changes between young and adult forms are related to alterations in the osteo-muscular... |
| Tipo: Journal article |
Palavras-chave: Mandible; Ontogeny; Sexual Dimorphism; Wild boar. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400026 |
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| Russel, David J.; Hedgpeth, Joel W.. |
| The calyptoblast hydroids Aglaophenia struthionides (Murray, 1860), Eucopella (= Campanularia) everta (Clark, 1896), and Abietinaria spp. in the low intertidal zone at Mussel Point, Pacific Grove, Monterey Bay, California, often bear the adult pycnogonids Tanystylum duospinum Hilton, 1939 and Ammothea hilgendorfi (Böhm, 1879). Larval stages of these pycnogonids were found living and feeding on Eucopella everta. The larvae of Tanystylum duospinum are ectoparasitic. Those of Ammothea hilgendorfi are endoparasitic in the gastrovascular cavities of hydranths. Larvae of both species feed on the gut contents of Eucopella everta, often on the same hydroid colony. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Pycnogonids; Host; Hydroids; Ontogeny; Monterey Bay. |
| Ano: 1990 |
URL: http://www.repository.naturalis.nl/record/504291 |
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| Sluys, Ronald. |
| Many of the lower metazoans reach adulthood via complex developmental stages. Each of these stages is described with a specialized terminology, which is different for every major group of organisms. Biologists with a proper training in biodiversity may have learned about these complex issues during their undergraduate days, but many of us do no longer encounter the intricacies of lower metazoan development in later stages of our careers. We may be familiar with the ontogenetic stages in the group on which we specialize, but only a few will have practical knowledge and an overview of the larval stages in such groups as crustaceans, echinoderms, polychaetes, sipunculans, molluscs, flatworms, bryozans, and nemertines. Donald Williamson certainly belongs to... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Ontogeny; Larvae; Evolutionary theory; Parallelism; Homology. |
| Ano: 1992 |
URL: http://www.repository.naturalis.nl/record/504508 |
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| Registros recuperados: 82 | |
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