The big quandary is how the larval stage
came to be so different from the adult, and whether, in their early evolutionary phase, adults used to look like the much simpler present day larvae or whether the larval stage
was somehow inserted into the life cycle.
The larval stage
spends two or three months in streams, and adults seldom travel far from a stream edge.
SLOPE INTERCEPT N [R.sup.2] p-VALUE Early-Stage 0.015 0.1 6 0.92 0.003 Late-Stage 0.02 0.05 6 0.87 0.01 Model results of estimated duration of the larval stage
(days) of a weakfish larva under conditions of Low (10 prey [I.sup.-1]), Mid (100 prey [I.sup.-1]), and High (1000 prey [I.sup.-1]) prey densities.
based on the idea that otolith size and growth are relative measures of larval size and growth (see Campana 1990, Hare and Cowen 1995), individuals that were larger at age 1 tended to be larger and faster growing throughout the larval stage
(Tables 2 and 3), and owing to the correlative nature of size and growth, the "bigger-is-better" and "growth-rate" mechanisms of the "growth-mortality" hypothesis are synonymous for larval P.
For a sessile, benthic organism, the pelagic larval stage
represents a brief, but radically different, mode of existence and may be subject to entirely different selection regimes.
rosae, the second larval instar 13.6+-0.81 individuals, the third larval instar 28.6+-1.5 individuals, and the forth larval stage
But, for stingless bees, the importance of the quantification of pollen in larval food must be highlighted, since the highest consumption of this resource by these bees occurs during the larval stage
(Zerbo et al., 2001).
At 20 and 25[degrees]C the average number of aphids consumed during the complete larval stage
was maximal at approximately 350 specimens.
Callum started his study after he heard that a German herpetologist had found larval stage
newts beside Loch Linnhe near Fort William while on holiday in 2011.
The effects of varying the proportions of ingredients on the growth and development of the rice leaffolder were evaluated by recording the survival rates of neonates, duration of the larval stage
, pupation percentage and pupal weight.
Once they reach larval stage
, the males are separated from the females, which are subsequently destroyed.
The first known description of Dirofilaria may have been by Italian nobleman Francesco Birago in 1626 in his Treatise on Hunting: "The dog generates two worms, which are half an arm's length long and thicker than a finger and red like fire." Birago erroneously identified the worms as a larval stage
of another parasite, Dioctophyme renale.