CONTRIBUTION TO ENERGY TRANSFORMATION BY FISH POPULATIONS IN A SMALL TROPICAL RIVER, NORTH VENEZUELA

被引：9

作者：

PENCZAK, T

机构：

来源：

COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY | 1992年 / 101卷 / 04期

关键词：

D O I：

10.1016/0300-9629(92)90359-X

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

1. In the Todasana, a small Venezuelan tropical rainforest stream flowing to the Caribbean Sea, fish were sampled at three contiguous sites: pool, rifle, and raceway for a bioenergetic study. 2. Total energy consumed by all fish populations inhabiting these sites was high: 7.9, 1.4 and 4.9 MJ/m2/yr, and food items calculated in wet weight: 2.3, 0.4 and 1.4 kg/m2/yr, respectively. 3. The utilization of food for growth in a gradient of mean monthly water temperatures of 21.9-25.0-degrees-C was low and inversely correlated with temperature. 4. Respiration expenditures, on the other hand, were high and directly correlated with temperature. 5. Of nine species only one was omnivorous, while the food niches of the others were very narrow.

引用

页码：791 / 798

页数：8

共 45 条

[11]

FISCHER Z, 1979, P WORLD S FINFISH NU, V2, P17

[12]

Grodzinski W., 1975, IBP Handbk, VNo. 24,1975, P1

[13]

Hildebrand S. F., 1935, Copeia Ann Arbor, P49

[14]

Hynes HBN, 1970, ECOLOGY RUNNING WATE

[15]

IVLEV V. S., 1939, INTERNAL REV GES HYDROBIOL U HYDROGR, V38, P449, DOI 10.1002/iroh.19390380126

[16]

Kinne O., 1960, Physiological Zoology, V33, P288

[17]

KLEKOWSKI R Z, 1973, Ekologia polska, V21, P229

[18] DISTRIBUTION, COMMUNITY STRUCTURE AND PRODUCTION OF FISHES IN THE UPPER SPEED RIVER, ONTARIO - PRE-IMPOUNDMENT STUDY [J].

MAHON, R ;

BALON, EK ;

NOAKES, DLG .

ENVIRONMENTAL BIOLOGY OF FISHES, 1979, 4 (03) :219-244

[19]

Mann K. H., 1969, Advances in Ecological Research, V6, P1, DOI 10.1016/S0065-2504(08)60256-1

[20]

Mann K.H., 1978, P250

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