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| Mise,Fábio T.; Souza,Fagner de; Pagotto,João P. A.; Goulart,Erivelto. |
| ABSTRACT Morphological variations, according to the principles of ecomorphology, can be related to different aspects of the organism way of life, such as occupation of habitats and feeding behavior. The present study sought to examine the intraspecific variation in two populations of Poecilia reticulata Peters, 1859, that occur in two types of environments, a lotic (Maringá Stream) and a lentic (Jaboti Lake). Due to a marked sexual dimorphism, males and females were analyzed separately. Thus, the proposed hypotheses were that the populations that occur in distinct environments present morphological differences. The morphological variables were obtained using morphometric measurements and the ecomorphological indexes. The data were summarized in a Principal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecomorphological indexes; Poeciliidae; Habitat occupation; Ecomorphotypes. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212015000200217 |
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| Mazzoni,Rosana; Araújo,Raphaella Rangel da Silva; Santos,Gardênia Carolina Tosta dos; Iglesias-Rios,Ricardo. |
| In the present work, we determined the relative importance of allochthonous and autochthonous food items as well as seasonal and ontogenetic variation in the feeding habits of Phalloceros anisophallos from córrego Andorinha, Ilha Grande. Quantitative analysis, based on alimentary index (IAi) and food volume (Vo), revealed that P. anisophallos fed on detritus, autochthonous algae (diatoms, unicellular and filamentous Chlorophyceae algae), autochthonous animals (aquatic insect larvae: Trichoptera, Chironomidae and other Diptera) and allochthonous animals (terrestrial insects: Hymenoptera). Ontogenetic variations were recorded for the consumption of each food category. Adults used a larger amount of algae and detritus, and juveniles used a higher amount of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poeciliidae; Atlantic Rain Forest; Coastal stream; Ontogeny; Seasonality. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100021 |
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| Chávez-López,Rafael; 0000-0002-6105-4294,Arturo Rocha-Ramírez ID; 0000-0002-7545-2269,Ángel Morán-Silva ID. |
| ABSTRACT In this contribution, Poecilia mexicana is recorded for the first time in a blind estuary study under hyperhalin conditions in the Gulf of Mexico and various ecological characteristics of the species are analyzed. 170 specimens in total (128 females and 42 males), were collected in May 2013 in the Laguna El Llano estuary, Veracruz, Mexico, which presented warm waters (31.4 °C), well-oxygenated (9.45 mg/L), transparent, and hyperhaline (average 73 UPS). Females were collected in a size range of 4.28-59.21 mm in standard length and 0.04-5.48 g by weight; males were collected in a size range of 15.73-51.41 mm LP and 0.091-2.97 g by weight. Largest size range was 10-29 mm standard length. The females presented a negative allometric growth; the males... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Laguna El Llano; Poeciliidae; Shortfin Molly; Veracruz. |
| Ano: 2020 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612020000100027 |
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