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  1. AU="dos Santos, Alejandra Filippo Gonzalez Neves"
  2. AU="Beverly Castillo Herrera"
  3. AU="Fatin Izzati Abdul Hadi"
  4. AU="Musinguzi, Nicholas"
  5. AU=Lee Edward Y
  6. AU="Raval, Urdhva"
  7. AU="Senn, L Kirsten"
  8. AU="Matsutani, Noriyuki"
  9. AU="Bernstein, Herbert J"
  10. AU="Elisa Impresari"
  11. AU="Feldman, Noa"
  12. AU="Dhingra, Mandeep Singh"

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  1. Artikel: From meso to hyperhaline: the importance of Neotropical coastal lagoons in supporting the functional fish diversity at regional scale

    Franco, Ana Clara Sampaio / Araújo, Francisco Gerson / dos Santos, Alejandra Filippo Gonzalez Neves / de Andrade-Tubino, Magda Fernandes / dos Santos, Luciano Neves

    Hydrobiologia. 2022 Oct., v. 849, no. 17-18

    2022  

    Abstract: Shallow coastal habitats are ruled by fluctuating environmental conditions, which lead to shifts in fish communities. Functional groups of habitat use and trophic strategy were used to address the responses of fish composition and diversity, since ... ...

    Abstract Shallow coastal habitats are ruled by fluctuating environmental conditions, which lead to shifts in fish communities. Functional groups of habitat use and trophic strategy were used to address the responses of fish composition and diversity, since comparisons of rich tropical systems are often complex through species-based approaches. We hypothesized that fish groups will have specific affinities in response to the prevailing environmental conditions, especially those reflecting the prevalence of oceanic or estuarine conditions, where guilds of habitat use would perform better as indicators. Despite the importance of other environmental factors (i.e. temperature and transparency), salinity was the key structuring factor irrespective of the coastal lagoon. Although harbouring the greatest biomass of piscivores, the harsh environmental conditions at Araruama lagoon were related to low diversity. A great number of indicator species, typically of marine affinity, was found at the Saquarema lagoon, probably due to the continuous and broad connection to the sea leading to the predominance of euhaline conditions. Despite the presence of non-native species (i.e. Oreochromis niloticus), the Maricá lagoon function as an important refuge for freshwater groups. Our results stressed the key role played by coastal lagoons of varied water conditions in supporting fish diversity at regional levels.
    Schlagwörter Neotropics ; Oreochromis niloticus ; biomass ; coastal water ; estuaries ; fish ; freshwater ; habitat preferences ; indicator species ; introduced species ; piscivores ; salinity ; temperature
    Sprache Englisch
    Erscheinungsverlauf 2022-10
    Umfang p. 4101-4118.
    Erscheinungsort Springer International Publishing
    Dokumenttyp Artikel
    ZDB-ID 214428-1
    ISSN 1573-5117 ; 0018-8158
    ISSN (online) 1573-5117
    ISSN 0018-8158
    DOI 10.1007/s10750-021-04683-x
    Datenquelle NAL Katalog (AGRICOLA)

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  2. Artikel ; Online: How much fluctuating asymmetry in fish is affected by mercury concentration in the Guanabara Bay, Brazil?

    Seixas, Luana Barbosa / Conte-Junior, Carlos Adam / Dos Santos, Alejandra Filippo Gonzalez Neves

    Environmental science and pollution research international

    2020  Band 28, Heft 9, Seite(n) 11183–11194

    Abstract: This study aims to analyze if the fluctuating asymmetry (FA) of the Corocoro grunt Orthopristis ruber is affected by mercury concentration in Brazilian Southeastern eutrophicated bay. The O. ruber fishes were collected in two areas of the Guanabara Bay, ... ...

    Abstract This study aims to analyze if the fluctuating asymmetry (FA) of the Corocoro grunt Orthopristis ruber is affected by mercury concentration in Brazilian Southeastern eutrophicated bay. The O. ruber fishes were collected in two areas of the Guanabara Bay, Rio de Janeiro, Brazil: Vermelha Beach, influenced to ocean waters, and Paquetá Island, for greater freshwater loads of the rivers of the region, both in wet and dry seasons. Possibly availability of food resources, exposure to other pollutants and harmful agents (pesticide, algal toxicity, among others), and environmental and oceanographic factors may be reflecting on the FA detected for the O. ruber population. Mercury (Hg) is a harmful trace metal when present in the food, because of the high toxicity, high levels of absorption, and low excretion rate. Hg accumulates in human organisms through fish consumption, which may represent a risk to health. Analytical determinations of THg were performed by Direct Mercury Analyzer, following the manufacture's recommendations and following the procedure proposed by Guimarães et al. (Food Sci Nutr 4:398-408, 2015). No evidenced in the influence of THg on FA. In turn, the THg was significantly different between areas. Higher THg levels were found in O. ruber populations in the Vermelha Beach, with mean values ​​of HgT 0.08 ± 0.01 mg/kg
    Mesh-Begriff(e) Animals ; Bays ; Brazil ; Environmental Monitoring ; Fishes ; Food Chain ; Humans ; Mercury/analysis ; Water Pollutants, Chemical/analysis
    Chemische Substanzen Water Pollutants, Chemical ; Mercury (FXS1BY2PGL)
    Sprache Englisch
    Erscheinungsdatum 2020-10-28
    Erscheinungsland Germany
    Dokumenttyp Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-020-11240-x
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel: Effects of temperature and salinity on bilateral symmetry of Eugerres brasilianus (Cuvier, 1830) larvae: Implications for Brazilian mojarra rearing

    Evangelista, Isis Ribeiro / dos Santos, Alejandra Filippo Gonzalez Neves / dos Santos, Luciano Neves

    Aquaculture. 2019 July 18,

    2019  

    Abstract: In Brazil, marine fish farming have minor contribution to the primary sector, but some species have shown great potential, such as the Brazilian mojarra, Eugerres brasilianus. However, larviculture is still a bottleneck due to the lack of protocols ... ...

    Abstract In Brazil, marine fish farming have minor contribution to the primary sector, but some species have shown great potential, such as the Brazilian mojarra, Eugerres brasilianus. However, larviculture is still a bottleneck due to the lack of protocols supporting survival and performance. Fluctuating Asymmetry (FA), which is the random deviation in bilateral symmetry in response to environmental conditions, can be used as a proxy of fish performance. The main purpose of this study was to evaluate, through microcosms experiments whether the FA levels in larvae of E. brasilianus will change with different temperatures (20 °C, 25° and 30°) and salinities (25, 30 and 35). A total of 92 larvae were analyzed. The Student t-test (p = .53) rejected the occurrence of directional asymmetry and validated the presence of FA in larvae's. The survival of larvae did not differ significantly under different temperatures (PERMANOVA; p = .58) and salinity (p = .68), probably because the early larval stage (i.e. before yolk sac assimilation) and short duration of the experiments. Eye asymmetry changed significantly among temperatures (PERMANOVA; p = .0001), but not with salinity (PERMANOVA; p = .77), revealing that waters ≤20 °C might have adverse effects on the Brazilian mojarra. This species is eurihaline, tolerating a wide range of salinity, explaining thus the null effect of this variable on eye asymmetry. However, eye asymmetry at lower temperatures may reduce the visual acuity of Brazilian mojarra, decreasing, therefore, the individual aptitude for food searching and intake, and affecting thus the zootechnical performance of this species in fish farms.
    Schlagwörter adverse effects ; asymmetry ; environmental factors ; Eugerres ; eyes ; fish culture ; fish farms ; fish larvae ; marine fish ; primary sector ; rearing ; salinity ; temperature ; t-test ; yolk sac ; Brazil
    Sprache Englisch
    Erscheinungsverlauf 2019-0718
    Erscheinungsort Elsevier B.V.
    Dokumenttyp Artikel
    Anmerkung Pre-press version
    ZDB-ID 185380-6
    ISSN 0044-8486 ; 0044-8516
    ISSN 0044-8486 ; 0044-8516
    DOI 10.1016/j.aquaculture.2019.734327
    Datenquelle NAL Katalog (AGRICOLA)

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  4. Artikel: Digestive tract morphology of the Neotropical piscivorous fish Cichla kelberi (Perciformes: Cichlidae) introduced into an oligotrophic Brazilian reservoir.

    dos Santos, Alejandra Filippo Gonzalez Neves / dos Santos, Luciano Neves / Araújo, Francisco Gerson

    Revista de biologia tropical

    2011  Band 59, Heft 3, Seite(n) 1245–1255

    Abstract: Despite being one of the most well-known cichlid fish of importance to artisanal and sport fishing, and among the largest fishes in the Neotropics, data on digestive tract anatomy of peacock basses (Cichla spp.) are largely lacking, especially for non- ... ...

    Abstract Despite being one of the most well-known cichlid fish of importance to artisanal and sport fishing, and among the largest fishes in the Neotropics, data on digestive tract anatomy of peacock basses (Cichla spp.) are largely lacking, especially for non-native populations. In this paper, we describe for the first time the digestive tract morphology of Cichla kelberi, a voracious piscivore that was introduced in the 1950s into an oligotrophic and physically low-complex impoundment in Brazil. Peacock basses were collected between 1994 and 2002 in Lajes Reservoir, through gillnets (25 to 55mm mesh; 20-50 x 2m), seines (10 x 2.5m; 8.0mm mesh), cast nets and angling. All the fishes were kept on ice in the field and then transferred to the laboratory, where they were identified, measured, weighed and dissected for digestive tract analyses. The Index of Relative Importance-IRI was calculated for diet characterization while linear and non-linear regressions were performed to assess growth patterns of four morphological characters related to feeding (e.g. mouth width, mouth height, stomach length and intestine length) and the number of gill rakers during the C. kelberi ontogeny. Most digestive tract structures were directly related to the piscivorous diet of C. kelberi, indicating that peacock bass is a diurnal, bathypelagic and gape-size limited predator that feeds largely on shallow-water prey species within the littoral zone. Mouth width and height grew allometrically (b > 1) with the size of peacock bass, broadening the size range in which prey can be eaten, but especially for predators smaller than -400mm of total length. Differently, stomach and intestine lengths increased isometrically (b = 1), which could constrain prey consumption for adult C. kelberi, especially those at advanced stages of gonadal maturation. The presence of longer-drawn, sharp and furcated gill rakers in C. kelberi may be related to increased prey retention in the resource-limited Lajes Reservoir, but further studies are necessary whether such features are randomly triggered by genetic or phenotypic anomalies, or effectively bring ecological advantages to the predator. In addition to contribute to improve the current biological knowledge on peacock basses, our results can be also useful to further comparisons on whether those morphological features related to feeding will change with transitions on prey consumption by C. kelberi and/or with the particular conditions of the invaded ecosystem.
    Mesh-Begriff(e) Animals ; Brazil ; Cichlids/anatomy & histology ; Cichlids/classification ; Fresh Water ; Gastrointestinal Contents ; Gastrointestinal Tract/anatomy & histology ; Seasons
    Sprache Englisch
    Erscheinungsdatum 2011-09
    Erscheinungsland Costa Rica
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2020929-0
    ISSN 2215-2075 ; 0034-7744
    ISSN (online) 2215-2075
    ISSN 0034-7744
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel: El pez Trachelyopterus striatulus (Siluriformes: Auchenipteridae) como herramienta de muestreo de la entomofauna en un embalse tropical.

    dos Santos, Alejandra Filippo Gonzalez Neves / Racca-Filho, Francisco / dos Santos, Luciano Neves / Araújo, Francisco Gerson

    Revista de biologia tropical

    2009  Band 57, Heft 4, Seite(n) 1081–1091

    Abstract: The study of aquatic environments is sometimes difficult to do with normal sampling methods that use gears. Insectivorous fishes represent good users of these ecosystems and analyzing the aquatic organisms present in fish stomachs, is an alternative way ... ...

    Titelübersetzung The fish Trachelyopterus striatulus (Siluriforms: Auchenipteridae) used to sample insects in a tropical reservoir.
    Abstract The study of aquatic environments is sometimes difficult to do with normal sampling methods that use gears. Insectivorous fishes represent good users of these ecosystems and analyzing the aquatic organisms present in fish stomachs, is an alternative way to determine resource abundance and utilization. In this paper, the potential of Trachelyopterus striatulus as an insect sampler was examined through dietary analyses of 383 individuals caught between April 1999 and March 2000 in Lajes Reservoir, a 30 km2 oligotrophic impoundment in Southeast Brazil. We estimated frequency of occurrence and Schoener's index of similarity. Diet changes among seasons and reservoir zones were addressed with DCA and ANOVA analyses. Its diet was 92.1% insects (ten orders and nine families). Hymenoptera (57.90%), Odonata (39.76%), Trichoptera (27.41%), Ephemeroptera (26.25%) and Coleoptera (28.96%) were the most common groups. Highest insect occurrence and richness were recorded in autumn-summer, a period of greater rainfall and insect activity. Formicidae, the dominant prey item in all seasons, appeared to be especially important in spring, a season marked by shortness of food resources. Trichoptera and Ephemeroptera were the most consumed prey items in the other seasons. Highest insect occurrence and richness were recorded in the middle and upper reservoir zones, respectively. Trichoptera and Ephemeroptera prevailed in the upper zone, where small pristine rivers and tributaries are abundant, whereas Formicidae and Belostomatidae predominated in the lower and middle zones. Because of its abundance in many freshwater ecosystems of Brazil, the ubiquity of insects in its digestive tract and the low level of prey degradation, T. striatulus has potential as an insect sampler of Neotropical reservoirs. However, conventional sampling in Lajes Reservoir is necessary to compare the effectiveness of T. striatulus with other insect sampling methods.
    Mesh-Begriff(e) Animals ; Catfishes/physiology ; Fresh Water ; Gastrointestinal Contents ; Insecta/classification ; Seasons
    Sprache Spanisch
    Erscheinungsdatum 2009-12
    Erscheinungsland Costa Rica
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2020929-0
    ISSN 2215-2075 ; 0034-7744
    ISSN (online) 2215-2075
    ISSN 0034-7744
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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