article
Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania
published
yes
Daniel
Muschiol
author
Walter
Traunspurger
author 21944
2685511
department
The life cycle and somatic growth of two bacterivorous nematodes, Panagrolaimus sp. and Poikilolaimus sp., isolated from chemoautotrophic microbial mats in Movile Cave, Romania, were studied in monoxenic cultures at 20 degrees C with Escherichia coli as the food source. A method is described that allows simultaneous investigation of the somatic growth pattern, age-specific fecundity, and age-specific mortality of single individuals with high accuracy. Somatic growth curves of the species are presented. During juvenile development, both species showed a strict linear increase in body length, whereas body weight increased exponentially. Growth was continuous without lag phases. The relationships between fresh weight, W (mu g), and body length, L (mm), were W = 1.6439L(2.7672) for Poikilolaimus sp. and W = 0.2085L(4.0915) for Panagrolaimus sp. Life tables and fecundity schedules for the two species are presented. In addition, demographic parameters were calculated. For Panagrolaimus, the intrinsic rate of natural increase (rn,), calculated according to the Lotka equation, was 0.309, the net reproductive rate (RO) 64, the mean generation time (T) 13.8 days and the minimum generation time (T-min) 9.5 days. The corresponding values for Poikilolaimus were r(m) = 0. 165, R-0 = 108, T = 26.2 and T-min = 19.5. Panagrolaimus produced fewer progeny than Poikilolaimus during its life but exhibited faster population growth due to its faster maturation. It showed a distinct post-reproductive period, whereas Poikilolaimus remained fertile until death.
BRILL ACADEMIC PUBLISHERS2007
eng
age-specific fecundityculture mediumgeneration timelifetablesmicrobial matpopulation growthsomatic growthbiofilm
NEMATOLOGY
1388-5545
1568-5411
00024854020001210.1163/156854107780739117
92271-284
Muschiol D, Traunspurger W (2007) <br /><em>NEMATOLOGY</em> 9(2): 271-284.
Muschiol, D.; Traunspurger, W. (2007): Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania <em>NEMATOLOGY</em>,9:(2): 271-284.
<div style="text-indent:-25px; padding-left:25px;padding-bottom:0px;">Muschiol, Daniel, and Traunspurger, Walter. 2007. “Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania”. <em>NEMATOLOGY</em> 9 (2): 271-284.</div>
Muschiol, D., & Traunspurger, W., 2007. Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania. <em>NEMATOLOGY</em>, 9(2), p 271-284.
D. Muschiol and W. Traunspurger, Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania, NEMATOLOGY <strong>9</strong>, 271 (2007).
Muschiol D, Traunspurger W. Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania. <em>NEMATOLOGY</em>. 2007;9(2):271-284.
<div style="text-indent:-25px; padding-left:25px;padding-bottom:0px;">Muschiol, D. & Traunspurger, W. (2007). Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania. <em>NEMATOLOGY</em>, <em>9</em>(2), 271-284. BRILL ACADEMIC PUBLISHERS. doi:10.1163/156854107780739117.</div>
D. Muschiol and W. Traunspurger, “Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania”, <em>NEMATOLOGY</em>, vol. 9, 2007, pp. 271-284.
Muschiol, D., and Traunspurger, W. (2007). Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania. <em>NEMATOLOGY</em> 9, 271-284.
Muschiol D, Traunspurger W (2007) <br />Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania.<br />NEMATOLOGY 9(2): 271-284.
<div style="text-indent:-25px; padding-left:25px;padding-bottom:0px;">Muschiol, D., & Traunspurger, W. (2007). Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania. <em>NEMATOLOGY</em>, <em>9</em>(2), 271-284. doi:10.1163/156854107780739117</div>
Muschiol, D., Traunspurger, W.: Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania. NEMATOLOGY. 9, 271-284 (2007).
D. Muschiol, and W. Traunspurger, “Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania”, <em>NEMATOLOGY</em>, <strong>2007</strong>, <em>9</em>, 271-284.
Muschiol, Daniel, and Traunspurger, Walter. “Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania”. <em>NEMATOLOGY</em> 9.2 (2007): 271-284.
Muschiol, D., & Traunspurger, W. (2007). Life cycle and calculation of the intrinsic rate of natural increase of two bacterivorous nematodes, Panagrolaimus sp and Poikilolaimus sp from chemoautotrophic Movile Cave, Romania. <em>NEMATOLOGY</em>, <em>9</em>(2), 271-284. doi:10.1163/156854107780739117
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