. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. (;ROWTH INHIBITION IN 163 b"45 31 b' 30 B 16 b '5 I a I _L _L : II *-I I « — I ' II I I . I < ! •— II *•! I * — , ', I II I I I ' ' *-x I || *• 1 1 ! .... II. u Fici'KE 1. Semi-recirculnting seawater system. A, B, C, culture trays; F, 25 and 5 /* canister filters; M, makeup water treatment box; S, S', compartments of sump; U, 50 W UV water treatment unit. Details are: a, 4 1 mixing trough with perforated distributor; b, b', b", pairs of 4 1 mixing troughs joined by siphon manifolds; c, adjustable dam an
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. (;ROWTH INHIBITION IN 163 b"45 31 b' 30 B 16 b '5 I a I _L _L : II *-I I « — I ' II I I . I < ! •— II *•! I * — , ', I II I I I ' ' *-x I || *• 1 1 ! .... II. u Fici'KE 1. Semi-recirculnting seawater system. A, B, C, culture trays; F, 25 and 5 /* canister filters; M, makeup water treatment box; S, S', compartments of sump; U, 50 W UV water treatment unit. Details are: a, 4 1 mixing trough with perforated distributor; b, b', b", pairs of 4 1 mixing troughs joined by siphon manifolds; c, adjustable dam and return line ; d, d', airstones ; e, e', baffles ; f, degassing screens ; g, pump ; h, heaters ; m, untreated, and m', treated makeup water input; o, o', overflow standpipes. Circled numbers are sampling points for water quality analyses; uncircled numbers indicate rows. Experimental subjects and protocol Two age classes of juveniles (herein called older and younger) were used. "Older" individuals were hatched from three wild-caught Homants aincncaniis females, reared in larval systems (Hand ct al., 1977) until metamorphosis, and then maintained in individual compartments at ambient temperatures (ca. 14°C) until the beginning of the experiment, at which time virtually all were nearing the 5th-to-6th-stage molt. On Julian Calendar Day 288/78, equal numbers from each of the three females (288 in all) were randomly assigned to the spaces in rows 5-10 of each tray (numbering from the influent end). "Younger" juveniles, from a single laboratory mating of a male H. aincricaniis to a female H. gaminarus, were hatched on Day 270/78 ± 3 days and reared at 19°C until Day 288/78, at which time all were in the 4th (1st post-larval) stage. (Pure H. aincricanus individuals of appropriate age and numbers were unavailable. We are confident, however, that using hybrids did not materially affect the results reported.) A total of 432 "younger" indivi
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
