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| 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 |
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| Sánchez-Cardozo,Lina M; Ospina-Salazar,Gloria H; Santos-Acevedo,Marisol; López-Navarro,Johann; Gómez-León,Javier. |
| Actualmente las poblaciones silvestres de caballitos de mar del género Hippocampus se están reduciendo debido a la demanda existente en el mercado por su uso en la medicina tradicional china, su consumo en países orientales y su atractivo como especies ornamentales, estando categorizadas todas las especies del género como amenazadas. El cultivo bajo condiciones controladas surge como una opción para la conservación y uso sostenible del recurso, sin embargo, se hace necesario desarrollar técnicas adecuadas, especialmente en la etapa de levante de las crías. En el presente estudio se evaluó el efecto del alimento vivo en el crecimiento y supervivencia de crías de Hippocampus reidi. Los primeros 11 días se alimentaron con nauplios de Artemia y rotíferos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alimentación; Caballitos de mar; Crías; Enriquecimiento; Hippocampus reidi. |
| Ano: 2014 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612014000100001 |
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| Melo-Valencia,Andrés Felipe; Ospina-Salazar,Gloria Helena; Gómez-León,Javier; Cortés-Pineda,Fabián Andrés. |
| This study was conducted to determine the optimal salinity for the culture of H. reidi fry during the first month of life, evaluating the effect of different salinities (27, 30, 33, and 36) on its growth and survival. The fry were distributed at three ind.L-1 density in 12 L incubators, animals were fed ad libitum throughout the experiment, survival was monitored daily, and height and weight were measured both at the beginning and end of the experiment. The salinity did not show significant differences between treatments, the highest survival rate was obtained at 27 with 17.59 ± 6.99%. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Salinity; Growth; Survival; Hippocampus reidi; Fry. |
| Ano: 2013 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100013 |
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| Freret-Meurer,Natalie Villar; Andreata,José Vanderli. |
| This study was carried out to fill the gaps that remain under Hippocampus reidi biology. Analysis of variations of sex ratio, density, breeding season, distribution and home range of a population of the endangered Brazilian seahorse H. reidi from a rocky shore on Araçatiba beach, Ilha Grande, Brazil were carried out. Araçatiba beach is a tourist Environmental Protected Area, suffering antropic pressure. A fixed population of H. reidi was studied, where al lthe individuals were visually tagged and sex, reproductive state and location on site were identified from December 2002 to November 2004. A total of 20 individuals were visually tagged with a mean density of 0.18 m-2. Sex ratios were skewed, with more females than males. All the males brooded during 13... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seahorse; Hippocampus reidi; Brazil; Natural biology. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000400012 |
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