Effects of temperature and salinity on artificially reproduced eggs and larvae of the leopard grouper Mycteroperca rosacea

Influence of the temperature on the early larval development of the Pacific red snapper, Lutjanus peru (Nichols y Murphy, 1922)

“…However, the larvae at 26°C showed a larger notochord length at the end of the experiment, and also showed a greater yolk sac volume at hatching. Therefore, there is a direct relationship between the yolk sac volume at hatching with growth of the larvae, which is consistent with results reported in other species of snappers as the Northern snapper, L. campechanus (Rabalais et al, 1980;Williams et al, 2004), the common bluestripe snapper, L. kasmira (Suzuki & Hioki, 1979) and in the rose spotted snapper, L. guttatus (Álvarez-Lajonchere et al, 2011) and larvae of other species such as the flathead grey mullet, Mugil cephalus (Walsh et al, 1991), the Nassau grouper, Epinephelus striatus (Watanabe et al, 1995) and the leopard grouper, Mycteroperca rosacea (Gracia-López et al, 2004).…”

“…A direct relationship between the oil droplet diameter and temperature has been found in newly hatched larvae of leopard grouper, M. rosacea, since larvae incubated at higher temperatures had higher oil droplet volume because they had a shorter incubation period (Gracia-López et al, 2004). However, in this study, no significant differences in oil droplet volume were found in larvae of L. peru at different temperatures, indicating that the effect of temperature on oil droplet consumption and the efficiency in the use of the same, varies among species as previously established by Blaxter (1969).…”

Patterns of courtship acoustics and geophysical features at spawning sites of black grouper (Mycteroperca bonaci)

“…In Bermuda, they occur during summer when sea-surface temperatures increase to 26-28°C (Luckhurst, 2010), and, in Brazil, the GSI index was highest during the winter months of August and September (Teixeira et al, 2004) when average temperatures cooled to 27°C (World Sea Temperatures, website). These temperature ranges have increased egg hatching success and larval survival of leopard grouper (Mycteroperca rosacea), Malabar grouper (Epinephelus malabaricus), and Nassau grouper (Epinephelus striatus) in controlled laboratory experiments (Watanabe et al, 1995;Gracia-López et al, 2004;Yoseda et al, 2006) and indicate that ocean The CAS rate increased significantly between the last quarter moon and the new moon at all 3 sites (Fig. 3).…”

Reproductive cycle of leopard grouper Mycteroperca rosacea (Streets, 1877) held in captivity: relation ship between gonad development and sex steroid concentration

“…It can be easily adapted to captivity and are resistant to diseases and handling. Leopard grouper has a high market value and high demand for local consumption (Gracia-López et al, 2004b). It has recently been described as gonochoristic in the wild and that some juveniles pass through a juvenile bisexual immature phase of gonad development (Erisman et al, 2008) but sexual transition was found in the wild on 2011 (Estrada-Godínez et al, 2011) as well as in capti-__________________ Corresponding editor: Claudia Bremec vity .…”

“…Wild mature individuals were induced to spawn with HCG producing >40,000 eggs/female (Gracia-López et al, 2004a) and hormonal induction on captive fish with HCG and LHRHa was successful producing over 2×10 6 eggs and fertilization rate of 62% (Kiewek-Martínez, 2004;. Embryonic development and egg and larval morphology and larval enzyme activity until the first feeding were described (GraciaLópez et al, 2004a;Martínez-Lagos & Gracia-López, 2009;Martínez-Lagos et al, 2014) and the effects of temperature and salinity on eggs and larvae also were studied (Gracia-López et al, 2004b). More than 1.7×10 6 eggs and 1.2×10 6 newly hatched larvae were achieved with a survival rate of 2.66% (Gracia-López et al, 2005).…”