. Fig. 36. Percentage length frequencies of Notothenia canina and N. jordani^hte summer stations pooled. to the lower half of the ' first slope', not spreading out on to the plain of the shelf or overlapping very much on to the territory of N. canina which, as we have seen, frequents the upper half of the 'first slope'. In our catches the difl^erence in mean length oiN. jordani (13-8 cm.) and N. canina (lo-i cm.) is statistically significant. Possibly we have here an example of the general rule ' larger fish in deeper water'-so familiar within the limits of single species having wide depth dis
. Fig. 36. Percentage length frequencies of Notothenia canina and N. jordani^hte summer stations pooled. to the lower half of the ' first slope', not spreading out on to the plain of the shelf or overlapping very much on to the territory of N. canina which, as we have seen, frequents the upper half of the 'first slope'. In our catches the difl^erence in mean length oiN. jordani (13-8 cm.) and N. canina (lo-i cm.) is statistically significant. Possibly we have here an example of the general rule ' larger fish in deeper water'-so familiar within the limits of single species having wide depth distributions-operating interspecifically, for the regional distribution of these two species is so nearly coincident that the difl^erence in depth distribution will be the main factor tending to prevent territorial overlapping
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