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| Registros recuperados: 31 | |
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| González-Bergonzoni,Iván; Loureiro,Marcelo; Oviedo,Sebastián. |
| The new cichlid species Gymnogeophagus tiraparae is described from the río Negro and río Tacuarí basins (Uruguay). The new species is distinguished from other Gymnogeophagus species by the unique presence of the following characters: adipose hump on head deeper than the dorsal-fin upper border, adipose hump with anterior profile vertical, extending from the upper lip to the dorsal-fin origin, absence of transversal bands on body; two horizontal series of moderately elongated light blue dots between dorsal fin spines, and a series of light blue stripes between soft rays, sometimes merged with the second series of elongated dots, always with a red ground color between series of dots, and caudal fin with dots vertically aligned on its distal border. According... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichlidae; Systematics; Neotropical. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000100003 |
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| Loureiro,Marcelo; Zarucki,Matías; Malabarba,Luiz R.; González-Bergonzoni,Iván. |
| ABSTRACT We describe a new species of a substrate-brooding Gymnogeophagus , based on coloration characters. The new species can be distinguished from the remaining substrate-brooding species in the genus by the unique pigmentation of the dorsal fin which consists of light blue, diagonal stripes over a red background in the spiny section and a combination of round, elliptic, and elongated bright blue spots over a red background in the soft section. It can be further distinguished from all other species of Gymnogeophagus by the following combination of characters: a discontinuous bright blue band above the upper lateral line in the humeral area, light blue roundish spots over a red to orange background on the anal fin, and conspicuous bright blue horizontal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichlidae; Gymnogeophagus meridionalis; Gymnogeophagus rhabdotus; Substrate brooding; Systematics. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100215 |
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| Favero,Jana Menegassi del; Pompeu,Paulo dos Santos; Prado-Valladares,Ana Carolina. |
| Com o principal objetivo de fornecer ferramentas para auxiliar na implementação do manejo sustentável de peixes ornamentais na Reserva de Desenvolvimento Sustentável Amanã, Amazonas, foi realizado o estudo da biologia reprodutiva de Heros efasciatus Heckel, 1840, um ciclídeo com potencial ornamental e com poucos trabalhos sobre a sua biologia e ecologia, apesar de já ser comercializado em algumas regiões amazônicas. Coletas bimestrais foram realizadas de fevereiro de 2006 a janeiro de 2007 em dez igarapés contribuintes do Lago Amanã e Urini, sendo utilizados três aparelhos de pesca (rede de arrasto, rapiché e armadilha tipo matapi) e ainda galhadas artificiais nas amostragens realizadas próximas aos lagos. Foram capturados 140 exemplares de H. efasciatus,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonas; Cichlidae; Peixe ornamental; Reprodução de peixes. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672010000200015 |
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| Rodrigues,Raoni Rosa; Carvalho,Lucélia Nobre; Zuanon,Jansen; Del-Claro,Kleber. |
| Animal coloration has many functions, and fishes are noted among vertebrates for presenting a wide variety of color patterns. Although in marine fishes the relationship between body coloration and behavioral context is well documented, there's not much information about freshwater fishes. Here we describe color patterns displayed by the dwarf cichlid Apistogramma hippolytae and suggest that these patterns are dependent on different social and behavioral settings. Field observations were conducted underwater in a pond in Central Amazonia, Brazil. We recorded six body coloration patterns related to seven different kinds of behavioral activities: foraging, resting, reproductive and agonistic displays, aggression (attacking and fleeing) and parental care.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intraspecific communication; Interspecific communication; Color changes; Parental care; Cichlidae. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400013 |
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| Cacho,Maria do Socorro R.F; Yamamoto,Maria Emília; Chellappa,Sathyabama. |
| Acará bandeira, Pterophyllum scalare Cuvier & Valenciennes, 1831 is a Neotropical cichlid fish, which has not been studied under a scientific approach. The objective of this work was to identify and describe the reproductive behaviour involved in the various phases of its reproductive cycle, such as territorial disputes and its establishment, substrate selection for spawning, courtship and mating, selection of mate and parental care. Twenty males and ten females of the study species were observed in the laboratory, over a period of six consecutive months. Behaviour descriptions resulting from these observations were analysed and the results show that the reproductive males are very agressive in the initial phase of reproduction. Agressiveness is a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Osteichthyes; Cichlidae; Pterophyllum scalare. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000300006 |
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| Torres R,G. A; González P,S; Peña S,E. |
| La tilapia (Oreochromis niloticus) es un pez presente en muchos ecosistemas de agua dulce, en diversas regiones de Colombia. Esta especie es una fuente de alimentación de alta demanda de la población en general, por lo cual es de gran interés que su hábitat acuícola estélibre de contaminantes, con el fin que el especimen se desarrolle y crezca normalmente y asípueda ser consumido por el ser humano sin ningún perjuicio. Las branquias y el hígado de peces son considerados como los órganos primarios donde detectar efectos de polución. Este estudio muestra la morfología normal de las branquias e hígado de tilapia, a través de microscopías: de luz, óptica de alta resolución (MOAR), electrónica de transmisión (TEM) y de barrido (MEB); como un estudio básico para... |
| Tipo: Journal article |
Palavras-chave: Branquia; Hígado; Morfología; Cichlidae. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000300008 |
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| Weliange, Wasantha S.; Amarasinghe, Upali S.; Moreau, Jacques; Villanueva, Ching-maria. |
| Twelve diel surveys were carried out in three reservoirs of Sri Lanka viz. Minneriya, Udawalawe and Victoria, to investigate diel feeding patterns, daily ration and relative food consumption in fish populations. Stomach content weights of different size classes of various fish species in the three reservoirs in 12 diel surveys were analysed using an iterative method, MAXIMS. Predominantly herbivorous or detritivorous fish species such as Amblypharyngodon melettinus and Oreochromis niloticus exhibited one peak in the diel feeding pattern. Two peak feeding periods were evident in predominantly insectivores and/or zooplanktivores (e. g., Puntius chola and Rasbora daniconius) and interestingly in macrophyte feeders (i.e., Etroplus suratensis, Puntius... |
| Tipo: Text |
Palavras-chave: Cichlidae; Cyprinidae; Trophic modelling; Freshwater fish; Feeding chronology; Diel feeding pattern. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-2134.pdf |
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| Gibran,Fernando Zaniolo; Ferreira,Katiane Mara; Castro,Ricardo M. C.. |
| We qualitatively studied the gut contents of 20 specimens (36.1-71.3 mm standard length) of the pike cichlid Crenicichla britskii from a 100 m stretched second order stream running inside a small gallery forest in a large pasture area of Rio Aguapeí basin, State of São Paulo, southeastern Brazil. The diet, in terms of per cent composition, constituted primarily of aquatic insects (50%) (mostly immature forms), crustaceans (14.3%), unidentified organic material and filamentous green algae (both with 10.7%), followed by fishes and arachnids (both with 7.1%). Diet analysis indicates that C. britskii is a generalist insectivore with a relatively short digestive tube, which feeds on autochthonous items captured in a broad array of habitats such as in the water... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cichlidae; Crenicichla britskii; Diet; Upper Rio Paraná system; Southeastern Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032001000100007 |
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| Vaslet,Amandine; France,Christine; Baldwin,Carole C.; Feller,Ilka C.. |
| Foraging habitats of juveniles of the Mayan cichlid, Cichlasoma urophthalmus (Günther, 1862), were investigated in two mangrove ponds located in Twin Cays offshore islet in Belize: Sink Hole pond (SH) and Hidden Lake pond (HL). Sink Hole pond is a semiclosed body of water, whereas Hidden Lake pond is connected by a channel to adjacent seagrass beds that surround the islet. Gut contents of 21 juvenile C. urophthalmus (9.8-13.2 cm total length) were analyzed, and five prey taxa were identified. In both mangrove ponds, C. urophthalmus were opportunistic carnivores and consumed primarily crustaceans. Plant material and detritus present in gut contents were most likely ingested incidentally when the fish foraged on small invertebrates. Carbon isotopic values of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caribbean; Cichlidae; Diet; Seagrass beds; Stable isotopes. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300021 |
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| Kadry,Vivian Oliveira; Barreto,Rodrigo Egydio. |
| Among fishes, when residents and intruders fight, residents usually win, most likely because they value the residence more than intruders. We hypothesized that enriched environments increase the value of an area in dispute, causing a resident to more fiercely defend a resource-rich environment than a poor one. However, in the present study, intruder-resident tests with the pearl cichlid, Geophagus brasiliensis, showed environmental enrichment actually reduces aggression and can even lead to co-habitation without fighting. Additionally, in our experiments, the prior residence effect occurred irrespective of enrichment condition. Decreased visibility from increased habitat complexity reduces interactions between fish and consequently might explain the lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fighting; Territoriality; Intruder-resident paradigm; Resource holding power; Cichlidae. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200011 |
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| Kasper,Carlos Benhur; Salvi,Juliana; Grillo,Hamilton César Zanardi. |
| O presente estudo foi realizado no Vale do Taquari, região central do Estado do Rio Grande do Sul, sul do Brasil. Entre dezembro de 2001 e dezembro de 2002 foi realizado um estudo sobre a predação de Cichlidae por Lontra longicaudis (Olfers, 1818) através de análise das escamas encontradas nas fezes de lontra. Foi identificada a predação sobre Gimnogeophagus labiatus (Hensel, 1870) e Crenicichla punctata Hensel, 1870, e a ocorrência destas espécies de peixe na dieta é mais elevada do que sua disponibilidade relativa no ambiente. Foi encontrada uma correlação positiva entre o tamanho do peixe e das escamas, permitindo a construção de uma curva de regressão para estimar o tamanho dos peixes predados baseado no tamanho das escamas encontradas nas fezes de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichlidae; Dieta; Estimativa do tamanho de presa; Lontra; Predação preferencial. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000300012 |
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| Hahn,Norma Segatti; Cunha,Fabiane. |
| The aim of this work was to evaluate the relationship between diet and features of the trophic ecomorphology of Satanoperca pappaterra (Heckel, 1840) in an impacted environment. Samples were collected from March 2000 to February 2003 in Manso Reservoir, Cuiabá River, Mato Grosso State. Analysis of 93 stomachs contents showed that food resources associated with the substrate, such as plant remains, detritus, fish scales and Chironomidae larvae, dominated the diet. Consequently this species was characterized as a detritivorous-invertivorous. However, individuals collected in 2003 showed a greater selection of benthic organisms in relation to previous periods. Morphological structures such as position of the mouth, form of the lips, gill rakers and pharyngeal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichlidae; Diet; Morphology; Freshwater. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800017 |
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| Daneshvar,Ehsan; Ardestani,Mahsa Y.; Dorafshan,Salar; Martins,Mauricio L.. |
| This study describes the hematological parameters in Iranocichla hormuzensis, an Iranian freshwater cichlid important as ornamental and food fish. Forty fish were captured with seine net at Mehran river Hormozgan province, Iran. Blood was used to determine the total counts of red blood cells (RBC) and white blood cells (WBC), hematocrit, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC) and morphometric data of erythrocytes. The Iranian fish showed lower RBC and WBC values than the other cichlids (Oreochromis niloticus, O. aureus, O. mossambicus, O. hybrid, Cichlasoma dimerus and Cichla monoculus). Hematocrit did not vary among the species, but MCV, MCH and MCHC in I. hormuzensis were higher... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichlidae; Iran; Hematology; Erythrocytes. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400009 |
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| Registros recuperados: 31 | |
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