The Autecology of Eudiaptomus cf drieschi (Poppe & Mrazek 1895 ...

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a.) b.) c.) d.) • Figure 2a-d.: a)Male fifth leg (P5).,b).Adult male., • c). Adult female with egg clutch., d). Adult female with attached spermatophore.
23 The female antennules are symmetrical. They are thin and usually as long or longer than the length of the body. They consist of 25 segments (Fig. 3c). Diaptomids pass through six naupliar (NI-VI) and six copepodid (CI-V) stages by molting, the final molt produces the adult which does not molt further. Adult females are fertilized by a spermatophore, which is attached by the male to the female genital segment (Fig 3d). Females require a new mating for each clutch produced. Eggs are carried in a single sac under the genital segment. Developmental Stages Average body length (in mm) of naupliar stages (excluding setae) and average body length of copepodite stages of Eudiaptomus drieschi from Lake Kinneret (excluding setae) are given in Table 1. Average of 50 individuals from each stage. Table 1: Average body length (in mm.) of naupliar and copepodite stages of Eudiaptomus drieschi (average of 50 individuals of each stage) with standard deviations. (in mm) NI NII NIII NIV NV NVI CI CII CIII CIV CV Average 0.141 0.180 0.213 0.252 0.358 0.393 0.499 0.655 0.798 1.107 1.165 St.Dev. 0.002 0.010 0.013 0.01 0.019 0.013 0.019 0.014 0.030 0.105 0.097 The NI stage is characterized by 3 pairs of incompletely developed appendages (first antennae, second antennae, mandibles) and no caudal setae. The first maxillae appears in NII. In the later or metanaupliar stages, maxillule develop (NIII, NIV). In the fifth stage (NV), the maxilla become visible. The maxilliped and rudimentary legs are present in the sixth and final naupliar stage. The second pair of legs appears in NVI as unsegmented buds. The copepodite stages are recognized by the number and segmentation of legs: 2-5. In C I, legs 1 and 2 are recognizably developed, but the endopod and exopod are unsegmented. Leg 3 appears as a “bud”, and after the CII molt, the “bud” becomes a
Page 1 and 2: The Autecology of Eudiaptomus cf dr
Page 3 and 4: Table of Contents Page Abstract Res
Page 5 and 6: Abstract Prior to the mid-eighties,
Page 7 and 8: occupying a niche and using its ada
Page 9 and 10: 1. General Introduction 1.1 Kinnere
Page 11 and 12: Over 30 different zooplankton speci
Page 13 and 14: The National Water Carrier, which w
Page 15 and 16: (Baird 1859); Arctodiaptomus (Arcto
Page 17 and 18: 2. Methods and Materials 2.1 Season
Page 19 and 20: (>20 µm) and nano (20 m) and nano
Page 21 and 22: Stock preparations Females with rip
Page 23 and 24: when the population meets condition
Page 25 and 26: 2.4.4. Food Requirements Mature adu
Page 27: c) b) a) d) e) • Figure 2: a) fem
Page 31 and 32: 25 Monthly Copepod Biomass 25.0 20.
Page 33 and 34: E. drieschi has a strong seasonal p
Page 35 and 36: Total Number of Organisms, L -1 80
Page 37 and 38: decline of E. drieschi in the water
Page 39 and 40: Average Depth of Individual = x 1 z
Page 41 and 42: Resting Egg Distribution in the Sed
Page 43 and 44: ) c) Figure 14: (a) resting egg fro
Page 45 and 46: 3.6 Development Development Time De
Page 47 and 48: Development Rate Post-embryonic dev
Page 49 and 50: 3.7 Salinity tolerance Survival of
Page 51 and 52: 4. Discussion 4.1 Taxonomical Posit
Page 53 and 54: 4.2 Ecological Implications of Deve
Page 55 and 56: seasonal abundance or intra-specifi
Page 57 and 58: distinguish resting eggs from subit
Page 59 and 60: ability as copepods mature. Diaptom
Page 61 and 62: 4.5.2 Temperature Temperature has b
Page 63 and 64: 4.5.3 Food Calanoid copepods in gen
Page 65 and 66: chloride. Between 1955-69, salinity
Page 67 and 68: This study offered the rare (and fo
Page 69 and 70: Beeton, A. M. (1981) General introd
Page 71 and 72: DeFrenza, J., Kirner, R.J., Maly, E
Page 73 and 74: Gophen, M. 1977. Food and feeding h
Page 75 and 76: Hanazato, T. and Yasuno, M. 1989. I
Page 77 and 78: Kawabata, K. 1989. Natural developm
Page 79 and 80:
Norrbin, M.F. 1994. Seasonal patter
Page 81 and 82:
copepod species in the eastern Wedd
Page 83 and 84:
Implications for diel vertical migr
Page 85 and 86:
האאוטאקולוגיה של (Po
Page 87 and 88:
והוטלו שנה קודם לכך
Page 89:
האאוטאקולוגיה של (Po
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