. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 290 B. A. SE1BEL ET AL 100- oo ••r. c a >, ~ I u3. ii i- 2IMI 400 600 800 Minimum Depth of Occurrence (m) 1000 Figure 5. Mean admin-- .'I citrate suithasc l\ W2 s^i ° r = : P = 0.(U dehulrogenasc1 \ -- S45i ' '" ' ° 50; r2 = Kendall rank correlation eoelticient, P = and lactate dehydrogenase (x) in branchial heart of pelagic cephalopods as a function of minimum depth ol occurrence. Symbols as in Fig. 3. creasing MDO (Fig. 5). There was no significant relation- ship between heart activity
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 290 B. A. SE1BEL ET AL 100- oo ••r. c a >, ~ I u3. ii i- 2IMI 400 600 800 Minimum Depth of Occurrence (m) 1000 Figure 5. Mean admin-- .'I citrate suithasc l\ W2 s^i ° r = : P = 0.(U dehulrogenasc1 \ -- S45i ' '" ' ° 50; r2 = Kendall rank correlation eoelticient, P = and lactate dehydrogenase (x) in branchial heart of pelagic cephalopods as a function of minimum depth ol occurrence. Symbols as in Fig. 3. creasing MDO (Fig. 5). There was no significant relation- ship between heart activity and MDO. There were no differences between Hawaiian and Californian animals for any parameter measured (ANCOVA; P > ). Excluded from the analyses with depth were species of the family Cranchiidae and Ociopotcuthis deletron. The use of transparency lor crypsis by cranchiid squids relieves them ot some of the selective pressure associated with the well-lit epipelagic /one (Seapy and Young. 1986; Seibel ct 1997: Johnsen and \\'idder. 1998). In tact, some cranchiid species remain in near-surface waters until adult- hood and then migrate suddenly to great depths where spawning occurs I Young. 1975). On the basis of the depths provided in Table I (estimated from Roper and Young. 1975). there is no relationship between any cn/ymatic ac- 11Miles and MDO lor cranchiid squids. (). deletron is unique in that the tins comprise a larger percentage of the body H than does mantle muscle (B. A. Seibel, unpuhl. ire, the en/v malic activities of mantle muscle may ii"i provide accurate estimates ol metabolism in this species. I he com-lalions between en/ymatic activities and hultcii' in iHg. I) 01 MO, il-ig. 2) were created using values toi (> deleiron tin muscle rather than mantle muscle. i-mtlKin ire the specimens captured in previous studies wei " permit accurate assessment ot habitat depth foi ics. Inclusion ol the cranchiids and O. deletion do fi .inlly alter
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
