... might rest on the continental shelf or slope before they ascend above the pycnocline to spawn, and that the egg masses might settle in the pycnocline. Here, two mesocosm experiments were conducted in a 300 m 3 tank that was 6 m deep to investigate this hypothesis. In the first experiment, a thermocline...

... in egg masses,using egg masses of the Antarctic nudibranch mollusk, Tritonia challengeriana . When warmed from –1.5° to +1.5°C, embryos of T. challengeriana showed large increases in O 2 consumption (Q 10 values of 9.6–30.0). Oxygen electrode measurements in intact masses showed, however, that O 2 levels...

...H. Arthur Woods; Amy L. Moran SUMMARY We developed a novel diffusion–reaction model to describe spatial and temporal changes in oxygen concentrations in gelatinous egg masses containing live, respiring embryos. We used the model in two ways. First, we constructed artificial egg masses of known...

.... However, little is known about relationships between egg-mass structure and the opportunities and constraints imposed on structure by metabolic gas transport. We examined the effects of four factors (temperature, embryo age, embryo density and egg-mass size) on the metabolism of egg masses using both...

...David T. Booth ABSTRACT The oxygen transport physiology of sand snail Polinices sordidus egg masses was investigated using oxygen microelectrodes and open-flow respirometry. P. sordidus eggs are laid in a jelly matrix that rapidly absorbs water and swells into a horseshoe-shaped sausage...

...Alan W. Pinder; Stephen C. Friet ABSTRACT Many amphibians lay their eggs in gelatinous masses up to 10–20 cm in diameter, posing problems for diffusive oxygen delivery. Oxygen may also be provided by water convection between eggs or by oxygen production by endogenous algae. We studied egg masses...