HARDENING OF RED KING CRAB PARALITHODES CAMTSCHATICUS (TILESIUS, 1815) SHELLS AFTER MOLTING

被引：7
|
作者：
Stevens, Bradley G. [1 ]
机构：
[1] Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr, Kodiak Fishery Res Ctr, Kodiak, AK 99615 USA
来源：
JOURNAL OF CRUSTACEAN BIOLOGY | 2009年 / 29卷 / 02期
关键词：
Anomura; molting; Paralithodes camtschaticus; red king crab; shell hardness; MALE SNOW CRAB; CHIONOECETES-OPILIO; MATURITY; CYCLE;
D O I：
10.1651/08-3039R.1
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
Shell hardness was measured with a durometer for female red king crabs, Paralithodes camtschaticus, held in the laboratory over variable periods up to 107 days after molting. The data were fit best by a hyperbolic equation, with parameters beta(0) = 0.216 and beta(1) = 0.019 (R-2 = 0.976, n = 199), and an asymptotic value of 50.7 durometer units (DU). The time required to reach 90% of complete shell hardness (H-90 = 45.6 DU) was calculated to be 74.2 days. Molting dates for all crabs were hindcast using the last measurement that was less than H-90 and mere within 2.5 +/- 6.4 days (mean +/- SE, n = 34) of the actual molting date.
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页码：157 / 160
页数：4
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