. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. T. M. JANTZEN AND J. N. HAVENHAND 0 20 40 60 80 100 120 140 160 180 200 220 240 Interval Duration (seconds) Figure 5. Frequency (%) of interval between the deposition of suc- cessive egg capsules in female Scpidtetilhis aiistralis (» = 209 durations). tunnel was directed upward toward the center of the ventral arm bases. A series of peristaltic movements passed through the funnel from the mantle toward the arms for, on average. s (n = 22, SEM = s). Throughout "Egg passing," the ventral arm bases extended t
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. T. M. JANTZEN AND J. N. HAVENHAND 0 20 40 60 80 100 120 140 160 180 200 220 240 Interval Duration (seconds) Figure 5. Frequency (%) of interval between the deposition of suc- cessive egg capsules in female Scpidtetilhis aiistralis (» = 209 durations). tunnel was directed upward toward the center of the ventral arm bases. A series of peristaltic movements passed through the funnel from the mantle toward the arms for, on average. s (n = 22, SEM = s). Throughout "Egg passing," the ventral arm bases extended to about double their normal size (Fig. 9). Within 5 s of the completion of "Egg passing," the ventral arm bases returned to the size observed prior to "Egg passing" behavior. Neither eggs nor egg capsule ma- terial was seen throughout "Egg passing," but following this behavior the arms of the female remained in a "Rigid arms" position until the egg capsule was deposited in the cluster. The mean interval between the completion of "Egg pass- ing" (the moment when the funnel resumed the "normal" position) and the beginning of egg deposition was s (SEM = n = 30 observations from 8 females). This duration did not differ significantly between females (one- way ANOVA, F7-22 = , P > ), which agreed with our observations that this behavioral interval was consistent between females. 50 . 40 20 10. 012345 Eggs per Capsule Figure 6. Frequency distribution (as a percentage) of egg number per capsule for Sepioteuthis uustni/is (n = 300 capsules). 35 30 25 >. 20 15 10 -^ ^ ^ ^^^^^ CM C5 CO ,- ID T- CO ,- *- CM CM T- co *- CD »- ' CO Interval Duration (seconds) Figure 7. Frequency of observations of interval duration between conclusion of egg deposition and "Peristaltic arm flare" behavior in fe- males of Sepioteuthis aiistralis (n = 257 intervals). Male agonistic contests The behavior of males thro
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
