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| Bueno,Alessandra A. P.; Bonatto,Carolina R.; Almeida,Ariádine C.. |
| ABSTRACT The aim of the present study was to evaluate the influence of abiotic factors (conductivity, dissolved oxygen, pH, precipitation, and water temperature) on the abundance of Macrobrachium amazonicum (Heller, 1862), as well as to compare the relative growth among demographic groups throughout the seasons in a lagoon system located in the municipality of Perdões, Minas Gerais. Monthly, from August/2013 to July/2014, the prawns were collected on macrophytes of the genus Eichhornia using a semi-circular sieve. In the laboratory, the specimens were categorized into juveniles, males, ovigerous females and non-ovigerous females, and measured as total length (TL), carapace length (CL), and abdomen length (AL). The predominance of juveniles was evident,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abiotic variables; Demographic categories; Freshwater prawn; Phenotypic plasticity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100218 |
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| Colling,Leonir A.; Bemvenuti,Carlos E.; Gandra,Michel S.. |
| The aim of this study is to analyze and relate the spatial-temporal variability of macrozoobenthic assemblages to bottom characteristics and salinity fluctuations, in an estuarine shallow water region of Patos Lagoon. Monthly samples, between September 2002 and August 2003, were taken on six sampling stations (distant 90 m). Three biological samples with a 10 cm diameter corer, one sample for sediment analysis, fortnightly bottom topography measurements, and daily data of temperature and salinity were taken from each station. Two biotic and environmental conditions were identified: the first corresponding to spring and summer months, with low macrozoobenthos densities, low values of salinity, small variations in bottom topographic level and weak... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seasonal variability; Benthos; Estuary; Abiotic variables; Sublittoral habitats. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000300007 |
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| Lopes, Carolina Antonieta; Universidade Federal de Santa Catarina; Garcia, Valquíria; Universidade Federal de Santa Catarina; Reynalte-Tataje, David Augusto; Universidade Federal de Santa Catarina; Zaniboni-Filho, Evoy; Universidade Federal de Santa Catarina; Nuñer, Alex Pires de Oliveira; Universidade Federal de Santa Catarina. |
| This study aimed to evaluate the temporal distribution of fish eggs and larvae in the Forquilha river (upper Uruguay river/Brazil) and its relationship with environmental variables. Ichthyoplankton and abiotic factors were sampled from September 2006 to August 2007. At the laboratory, samples were sorted and larvae were identified to the lowest possible taxonomic level. For data analysis we applied One-way Anova, Tukey’s test, Pearson correlation and PCA. In this study 200 eggs and 308 larvae were collected, showing differences in the temporal distribution and influence of abiotic factors. Larvae were identified in all stages of development, being distributed in three order and eight families. These results point that the lower portion of the Forquilha... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eggs and larvae; Fish; Reproduction; Abiotic variables. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17993 |
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