Fecundity analysis carried out in reference to shell dimensions presented self-confident correlations (Fig
6). Fecundity was significantly higher |$(P = 0.001) \ $| in ovigerous females occupying heavier shells |$( <\rm>\gt 3.0 \ <\rm>)$|? . Significant differences |$(P \lt 0.05)$| were registered in fecundity of ovigerous females of different sizes. The number of eggs produced by ovigerous females measuring more than 3.1-mm SL was higher |$(P = 0.001)$| than the fecundity of those females measuring 1.8- to 3.0-mm SL. In relation to the shell species, the fecundity of the ovigerous females in L. nassa and P. auritula shells (the larger ones) was not significantly different, nor was that of the ovigerous females occupying C. atratum and M. nodulosa shells. However, the number of eggs produced by the ovigerous females inhabiting P. auritula shells was significant higher |$(P = 0.001)$| than the fecundity of those in C. atratum and M. nodulosa.
In terms of the dimensions of the individuals, the new fecundity out-of ovigerous ladies regarding comparable products (3.0- in order to cuatro.5-mm SL) occupying L. nassa and you may P. auritula shells was not significantly different |$(P = 0.228)$|? , while the fecundity away from ovigerous ladies measuring dos.0- to three.0-mm SL inhabiting C. atratum try significantly greater than regarding the individuals of exact same size in the M. nodulosa shells.
Dialogue
The fresh P. tortugae people studies shown a leading and you may continuing reproductive hobby on Anchieta Area. The fresh fecundity filed try homogeneous throughout every season, additionally the reduced variability registered is maybe linked to money community (shells) and you will differences in creature dimensions. As a whole, P. tortugae fecundity, eggs diameter, and you will egg volume demonstrated a propensity to improve which have growing SL.
The new bimodality in proportions-frequency shipments (complete and you can monthly) based in the ovigerous females’ population are uncommon that will reflect recruitment pulses otherwise behavioural distinctions ( Diaz and you can Conde, 1989)
This is told me by the existence course from P. […]