Consulta: subjectFacets:"Syngnathidae"
Registros recuperados: 5
Data/hora: 02/06/2024 06:51:40

Novel sex-related characteristics of the longsnout seahorse Hippocampus reidi Ginsburg, 1933
Provedor de dados: 83
Autores: Oliveira,Tacyana P. R; Castro,André L. C; Rosa,Ierecê L.
This paper presents novel sex-related characteristics in Hippocampus reidi, expressed as a prominent and pigmented keel (males only), and by a row of dorsolateral spots mostly (97.4%) found in males. While the keel was found even in the smallest males sampled, the dorsolateral spots appear to be associated with body size. Ex situ observations revealed that during courtship males highlighted both characters by turning pale their background body colour. Understanding such colour and behavioural patterns is relevant to increase our knowledge about sexual selection in a morphologically and biologically unique group of fishes.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Syngnathidae; Colouration; Keel; Dorsolateral spots; Courtship.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200017

Disruptive coloration and habitat use by seahorses
Provedor de dados: 83
Autores: Duarte,Michele; Gawryszewski,Felipe M.; Ramineli,Suzana; Bessa,Eduardo.
ABSTRACT Predation avoidance is a primary factor influencing survival. Therefore, any trait that affects the risk of predation, such as camouflage, is expected to be under selection pressure. Background matching (homochromy) limits habitat use, especially if the habitat is heterogeneous. Another camouflage mechanism is disruptive coloration, which reduces the probability of detection by masking the prey’s body contours. Here we evaluated if disruptive coloration in the longsnout seahorse, Hippocampus reidi, allows habitat use diversification. We analyzed 82 photographs of animals, comparing animal and background color, and registering anchorage substrate (holdfast). We tested whether the presence (disruptive coloration) or absence of bands (plain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Camouflage; Hippocampus reidi; Predation; Syngnathidae.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000500212

Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil
Provedor de dados: 83
Autores: Garcia,Alexandre M.; Geraldi,Ricardo M.; Vieira,João P.
Pipefish species are poorly known representatives of the family Syngnathidae, which have been increasingly threatened by anthropogenic activities. We describe the diet composition and feeding strategy of southern pipefish Syngnathus folletti inhabiting a Widgeon grass (Ruppia maritima L.) bed in the estuarine zone of Patos Lagoon, southern Brazil. We also investigated whether mouth gape affected the size of prey items consumed and based on indirect evidence, we suggest possible pipefish foraging movements within the bed. Individuals were collected from December 1994 to March 1995 in a Ruppia maritima bed located in the Patos Lagoon Estuary during day and night periods. We analyzed the stomach contents of 108 individuals (54 females and 54 males). Both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Syngnathidae; Ruppia maritima; Feeding ecology; Size-biased feeding; Prey size.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300011

Polymorphisme intraspécifique chez le syngnathe aiguille, Siyngnathus acus (Osteichthyes, syngnathidae)
Provedor de dados: 20
Autores: Ben Amor, M.M.; Ben Salem, M.; Capapé, C.
De juin 2002 à juin 2005, 267 syngnathes aiguilles, Syngnathus acus Linnaeus, 1758, ont été récoltés dans les eaux tunisiennes: 204 dans Bahiret El Biban (Tunisie méridionale), 24 dans la lagune Sud de Tunis et 39 devant La Goulette (Tunisie septentrionale). Trois types d'études ont été effectués à partir de l’ensemble des variables biométriques: la première repose sur l'analyse de la variance et de la moyenne à l'aide du test "F" de Ficher et du test "t" de Student; la deuxième est fondée sur l’analyse de la multivariance (ANOVA); et la troisième est fondée sur des analyses multidimensionnelles. La première et la deuxième études ont montré des différences significatives dans les variances et les moyennes pour la plupart des caractères examinés, dans les...
Tipo: Journal Contribution
Palavras-chave: Biological polymorphism; Osteichthyes; Syngnathidae; Syngnathus acus; Http://aims.fao.org/aos/agrovoc/c_12985; Http://aims.fao.org/aos/agrovoc/c_41716; Http://aims.fao.org/aos/agrovoc/c_41719.
Ano: 2008
URL: http://hdl.handle.net/1834/4239

Aspectos ecológicos do cavalo-marinho Hippocampus reidi no estuário Camurupim/Cardoso, Piauí, Brasil, fornecendo subsídios para a criação de uma Área de Proteção Integral
Provedor de dados: 49
Autores: Mai,Ana Cecília Giacometti; Rosa,Ierecê Maria de Lucena.
Em 2005, um conjunto de entidades iniciou formalmente um processo através do Instituto Brasileiro do Meio Ambiente e dos Recursos Renováveis (IBAMA) para a criação de uma unidade de conservação de proteção integral englobando os estuários Camurupim/Cardoso e Timonha/Ubatuba, no Estado do Piauí. Entre as espécies-bandeira capazes de angariar apoio para a proteção dos referidos estuários, encontra-se o cavalo-marinho Hippocampus reidi, foco do presente trabalho. Os resultados do nosso estudo de um ano, na área em questão, mostraram a existência de uma população residente de H. reidi, encontrada em 19 habitats e com uma das mais altas densidades já reportadas para a espécie (0,04 ind/m²). Esta informação reforça a importância crucial de apoio adicional à...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservação; Área protegida; NE do Brasil; Substrato de apoio; Densidade; Tamanho populacional; Syngnathidae.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300007