Effects of temperature (23, 26, 29°C) and salinity (0, 5, 10, 15, 20 ppt) on hatch success, growth, development, and survival of bigmouth sleeper Gobiomorus dormitor yolk sac larvae were determined. Hatch success was greater at lower temperatures (23°C) and salinities (0-10 ppt), while larval survival and growth were greater at 26°C and 0 ppt. Larvae reared at 29°C- 0 ppt developed rapidly but rarely survived 48-h post hatch, while larvae at 23°C- 0 ppt survived 120-h post hatch, developed slower. Salinity adversely affected larval survival and size at hatch, larvae reared at salinities 5 ppt or greater died within 12-h post hatch and larvae set at 0 ppt were significantly larger than larvae hatched at salinities 5 ppt or greater. The exogenously feeding larval stage was not achieved; however, this study provides valuable insight of the bigmouth sleeper early ontogeny and provides several techniques for improving future propagation attempts.

Reproductive success in loggerhead (Caretta caretta) sea turtles is strongly dependent on the effective placement and internal conditions of their nests. Embryos rely on optimal incubation conditions for proper development and growth, which determines how many hatchlings will emerge from the nest. The internal microclimate of each nest is delicately balanced and can be easily influenced by external environmental conditions. This study was designed to examine several environmental variables and determine their effects on sea turtle nesting numbers, hatching success, and incubation conditions in Broward County Florida. Over a span of 25 years (1991-2015), the Broward County Sea Turtle Conservation Program has collected data on each sea turtle nest laid in Broward County. This data was analyzed and plotted to visualize nesting and hatching trends, and regressions were fitted to make comparisons to historic air temperature, sea surface temperature, precipitation, and lunar illumination data. These regressions were tested for significance, and each environmental variable was found to have varying levels of impact on sea turtle nesting and hatching behavior. Of the environmental variables considered in this study, analyses suggest that sea turtles are most responsive to temperature, with sea surface temperature serving as the best proxy for predicting nesting behaviors. Air temperature over the incubation period was found to be the best indicator for hatch success percentage. Air temperature, sea surface temperature, and precipitation averages all significantly affected the length of the incubation period. The regression models created in this study could be used to examine the interactions between climatic variables, and to indicate what impacts can be expected by these various environmental factors. This information could be used to estimate the future effects of climate change on sea turtle reproduction, and to predict general reproductive success and future population trends.