Effect of Temperature on Growth and Survival in Cultured Early Juvenile Pot‐bellied Seahorses, Hippocampus abdominalis

Abstract

In Tasmania, Australia, commercial seahorse culture takes place in tank systems in which approximately 75% of the water is exchanged daily from the Tamar River estuary. As such, some water conditions such as temperature fluctuate on a daily and seasonal basis. The aim of this study was to examine the effect on growth, condition, survival of, and Artemia ingestion by, early juvenile seahorses, Hippocampus abdominalis, cultured for 6 wk at temperatures within the species' natural range (8-24 C) and above it (26 C). Seahorses cultured at 20 C were longer and heavier than those at 17 C, although not significantly different to 23 C. There were no differences in survival or Artemia ingestion of juveniles cultured at 17, 20, and 23 C. At 26 C, 100% mortality was reached on Day 15. This study demonstrates that H. abdominalis can be reared in captivity at a range of 17-23 C in early life stages without compromising growth and survival.

Effect of Salinity on Growth and Survival in Juvenile Opossum Pipefish,Microphis brachyurus, in Culture Conditions

“…These results could be related to the provided food ratio of 14%, which despite the poor adaptation of the juveniles to 16 g/L was enough to prevent nutritional stress in the remainder of fish at the end of the trial. The 14% food ratio used in this study aimed to ensure adequate feed intake by M. brachyurus , as in a previous syngnathid study (Martinez‐Cardenas and Purser ) this feed ratio was found to be to excess for experimental seahorse rearing. Moreover, in other studies on teleosts a 5% feeding ratio has already been considered an excessive amount (Barron et al ).…”

Avances en el cultivo de Hippocampus spp. (Teleostei: Syngnathidae): investigaciones en el siglo XXI

“…Koldewey & Martin-Smith (2010) publican una extensa revisión del estado mundial de la acuicultura de caballito de mar desde un punto de vista técnico, económico y social. Desde entonces, se ha generado mucha información que permite, a la fecha, tener un mejor conocimiento de aspectos como: efecto de los factores físicos y químicos en el desempeño de diferentes especies de caballito de mar en cautiverio Anderson et al, 2011;Martínez-Cárdenas & Purser, 2011;Pawar et al, 2011;Aurélio et al, 2013;Planas et al, 2013;Blanco et al, 2014;Qin et al, 2014;Faleiro et al, 2015;Hora et al, 2016;Martínez-Cárdenas & Purser, 2016;Mascaró et al, 2016); cultivo y nutrición de juveniles (Faleiro & Narciso, 2010, 2013aOtero-Ferrer et al, 2010;Zhang et al, 2010Zhang et al, , 2011Zhang et al, , 2015aZhang et al, , 2015bPalma et al, 2011;Celino et al, 2012;Planas et al, 2012;Willadino et al, 2012;Yin et al, 2012;García-Manchón et al, 2013;Pham & Lin, 2013;Souza-Santos et al, 2013;Sanaye et al, 2014;Vite-García et al, 2014a, 2014bBlanco et al, 2015;Mélo et al, 2015;Novelli et al, 2015Novelli et al, , 2016; y mantenimiento y reproducción de adultos (Planas et al, 2010(Planas et al, , 2013…”

“…Estas diferencias están relacionadas con el área de distribución de cada especie, con los resultados obtenidos y con el nivel de tecnología empleado en los diferentes sistemas de cultivo. Así, especies de climas templados como H. abdominalis (Lesson, 1827), H. hippocampus (Linnaeus, 1758) y H. guttulatus (Cuvier, 1829) se mantienen bien a temperaturas entre 13° y 23°C (Woods, 2000;Wilson et al, 2006;Palma et al, 2008Palma et al, , 2011Planas et al, 2008Planas et al, , 2012Martínez-Cárdenas & Purser, 2011), mientras que hipocampos con distribución preferentemente tropical [e.g., H. erectus, H. reidi, H. kuda (Bleeker, 1852), H. barbouri (Jordan & Richardson, 1908y H. trimaculatus (Leach, 1814] prefieren temperaturas >23°C (Lin et al, 2008bOlivotto et al, 2008;Murugan et al, 2009;Garcia et al, 2012;Willadino et al, 2012) (Tabla 1).…”

“…La temperatura es un factor que impacta el crecimiento, sobrevivencia y reproducción de caballitos de mar (Wong & Benzie, 2003;Lin et al, 2006Lin et al, , 2007Lin et al, , 2008bSheng et al, 2006;Martínez-Cárdenas & Purser, 2011;Planas et al, 2012Planas et al, , 2013Mascaró et al, 2016). En general, se ha reportado que los peces experimentan mayores tasas metabólicas a mayores temperaturas dentro del intervalo de tolerancia de cada especie, lo cual se refleja en mayores tasas de crecimiento.…”

Effect of Direct Transfer to Different Salinities on Early Juvenile Pot‐bellied Seahorse, Hippocampus abdominalis, Survival in Culture Conditions

“…Full‐strength seawater has been commonly used during the experimental culture of seahorse species such as Hippocampus erectus (Correa et al ; Scarratt ), Hippocampus whitei (Wong and Benzie ), and Hippocampus kuda (Anil et al ; Lin et al ). Similarly, much of the research on the pot‐bellied seahorse, Hippocampus abdominalis , has also been conducted in full‐strength seawater (Woods , , , , , , ; Adams et al ; Shapawi and Purser ; Woods and Valentino ; Wilson et al ; Martinez‐Cardenas and Purser , , ). However, H .…”