摘要:

Gillnets of nine colors were compared with white nylon to determine effects of each color on catch rates of numbers and weights of 15 species of fishes in Elephant Butte Lake. Data were analyzed with mixed-model analysis of variance. Significantly different catch rates were compared, as fractions of unity (ratios), with rates in white nets.

ISSN:0002-8487    

DOI:10.1577/1548-8659(1973)102<109:VICOFW>2.0.CO;2

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

The voltage gradients in a trawl fitted with electrode arrays were determined and the catching efficiencies of an electrical trawl with power on and with power off were compared to a standard trawl without electrode arrays.

ISSN:0002-8487    

DOI:10.1577/1548-8659(1973)102<116:TCEOAM>2.0.CO;2

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

Relative recoveries of landlocked salmon Salmo salar planted at ages 0+ (fall), I (spring) and I+ (fall) were compared by analysis of variance and a multiple range test. Data were collected from angler catches (1963–69) and from trap net catches (1963–70). Sample sizes were 987 salmon from angling and 1,018 salmon from netting. The analysis of variance revealed a significant difference in recoveries of salmon of different ages at planting, and the Student-Newman-Keuls multiple range test showed that the significant difference was between age 0+ and age I+ salmon. At Schoodic Lake, comparable sport fisheries could be provided by stocking either 1,000 age I+ salmon or 2,800 age 0+ salmon. The smaller salmon would cost only 70% as much as the larger.

ISSN:0002-8487    

DOI:10.1577/1548-8659(1973)102<121:RROHLS>2.0.CO;2

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

Respiratory metabolism data on 15 species of fish representing six families indicate that individuals in a school experienced a reduction in metabolic rate when compared to the same individuals tested in isolation. The reduction in O2consumption appears to be the result of an interaction of a “calming effect” and a possible hydrodynamic advantage.

ISSN:0002-8487    

DOI:10.1577/1548-8659(1973)102<125:RMRIFA>2.0.CO;2

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

ISSN:0002-8487    

DOI:10.1577/1548-8659(1973)102<132:TOACTO>2.0.CO;2

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

ISSN:0002-8487    

DOI:10.1577/1548-8659(1973)102<134:EONOEA>2.0.CO;2

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

ISSN:0002-8487    

DOI:10.1577/1548-8659(1973)102<137:TUAPOC>2.0.CO;2

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

ISSN:0002-8487    

DOI:10.1577/1548-8659(1973)102<139:EOLOVO>2.0.CO;2

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

ISSN:0002-8487    

DOI:10.1577/1548-8659(1973)102<142:EOTODM>2.0.CO;2

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

ISSN:0002-8487    

DOI:10.1577/1548-8659(1973)102<144:CAAFIH>2.0.CO;2

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor