季节性适应北方墨西哥湾牛鼻魟（Rhinoptera bonasus (Mitchill 1815)）的标准耗氧量。

Standard oxygen consumption of seasonally acclimatized cownose rays, Rhinoptera bonasus (Mitchill 1815), in the northern Gulf of Mexico.

机构信息

Coastal Fisheries Institute, Louisiana State University, Baton Rouge, Louisiana, 70803-7503, USA,

出版信息

Fish Physiol Biochem. 2006 Mar;32(1):67-71. doi: 10.1007/s10695-006-7312-9.

PMID:20035481

Abstract

Standard oxygen consumption rate (MO(2)) was determined for 19 cownose rays (Rhinoptera bonasus) using flow-through respirometry. Rays ranged in size from 0.4 to 8.25 kg (350-790 mm DW). Respirometry experiments were conducted on seasonally acclimatized rays at temperatures from 19.0 to 28.8 degrees C. Estimates of mass-dependent MO(2) ranged from 55.88 mg O(2) kg(-1) h(-1) for an 8.25 kg ray to 332.75 mg O(2) kg(-1) h(-1) for a 2.2 kg animal at 22-25 degrees C. Multiple regression analysis examining the effect of temperature, salinity, and mass on standard mass-independent MO(2) found temperature (P < 0.01), and mass (P < 0.0001) to have a significant effect on oxygen consumption, whereas salinity did not (P > 0.05). Q (10) was calculated as 2.33 (19-28 degrees C), falling between the estimates determined for two other batoid species, the bull ray (Myliobatos aquila; Q (10) = 1.87) and the bat ray (Myliobatis californica; Q (10) = 3.00). The difference in the Q (10) estimates may be attributed to the use of seasonally acclimatized as opposed to laboratory-acclimated animals.

摘要

采用流动式呼吸测量法测定了 19 只牛鼻魟（Rhinoptera bonasus）的标准耗氧率（MO₂）。这些魟鱼的体型大小从 0.4 公斤至 8.25 公斤（350-790 毫米 DW）不等。呼吸测量实验在季节性适应的魟鱼身上进行，温度范围从 19.0 摄氏度至 28.8 摄氏度。在 22-25 摄氏度时，估计的质量依赖性 MO₂范围从 8.25 公斤的魟鱼的 55.88 毫克 O₂ 公斤⁻¹ 小时⁻¹到 2.2 公斤动物的 332.75 毫克 O₂ 公斤⁻¹ 小时⁻¹。对温度、盐度和质量对标准质量独立 MO₂的影响进行的多元回归分析发现，温度（P<0.01）和质量（P<0.0001）对氧气消耗有显著影响，而盐度没有（P>0.05）。Q（10）的计算值为 2.33（19-28 摄氏度），介于两种其他板鳃鱼类（bull ray，Myliobatos aquila；Q（10）=1.87）和 bat ray（Myliobatis californica；Q（10）=3.00）的估计值之间。Q（10）估计值的差异可能归因于使用季节性适应的动物而不是实验室适应的动物。