Reproduction of two-spotted goby, Gobiusculus flavescens, in captivity
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1
School of Tourism and Maritime Technology, Marine Resources Research Group, Portugal
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2
Department of Life Sciences, CFE–Centre for Functional Ecology, Portugal
The two-spotted goby, Gobiusculus flavescens, is a common fish species along rocky shores in northern European waters. It is a small (40-60 mm), semipelagic marine fish, forming loose shoals in association with microalgae vegetation and mussel beds growing on the rock surface. It is a short-lived species, with a life span of 1-2 years. Both sexes display courtship behaviour and have sexual ornamentation during the breeding season. Male ornaments consist of large dorsal fins with iridescent blue lines, and iridescent blue spots along the sides of the body. Females develop a conspicuous, bright orange belly at sexual maturity. Due to these characteristics this species could have a great interest for ornamental aquariums. In previous work the maintenance of G. flavescens at high temperatures (until 23°C) was successful. The aim of this study was to test the reproduction in captivity of G. flavescens. Six replicates were used (18L aquariums) at the temperature of 18°C. In each replicate, two males and four females were introduced to an aquarium, where the males chose between two nests and courted the females. During the 112 days of the experiment the females spawned five times but only three spawns had success. The eggs take approximately 8 days to become mature. On the three spawns have hatched 300, 361 and 510 larvae at a time. The larvae were kept in a separate container and fed with alive rotifers and survived a maximum of 21 days. The reproduction of the two-spotted goby in captivity is possible at 18°C, but it is necessary to improve the conditions to rearing the larvae.
Keywords:
Reproduction,
Gobiusculus flavescens,
Survival,
spawning,
fish larvae
Conference:
IMMR | International Meeting on Marine Research 2014, Peniche, Portugal, 10 Jul - 11 Jul, 2014.
Presentation Type:
Poster Presentation
Topic:
AQUACULTURE
Citation:
Teles
V,
Fernandes
F,
Rocha
M and
Maranhão
P
(2014). Reproduction of two-spotted goby, Gobiusculus flavescens, in captivity.
Front. Mar. Sci.
Conference Abstract:
IMMR | International Meeting on Marine Research 2014.
doi: 10.3389/conf.fmars.2014.02.00127
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Received:
09 May 2014;
Published Online:
18 Jul 2014.
*
Correspondence:
Dr. Paulo Maranhão, Department of Life Sciences, CFE–Centre for Functional Ecology, Coimbra, 3001-401, Portugal, pmaranhao@ipleiria.pt