• Incubation, hatching and yolk utilization in the eggs of the orb weaving spiderCyrtophora cicatrosa (Araneae; Araneidae)

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    • Keywords


      Incubation; yolk utilization; hatchabiiity; water content of eggs; Cyrtophora cicatrosa

    • Abstract


      Cyrtophora cicatrosa Stoliczka was reared from hatching to death at 4 different temperatures i.e. 22, 27, 32 and 37° C. A significant correlation is obtained between initial water content and hatchabiiity of the eggs. During embryonic development energy density and fat decreased but the water content increased. Fat was the main energy source for embryonic development. Of 0.34 gcal energy present in an egg, 29% is utilized on embryonic metabolism, 21% on postemergent activities.

    • Author Affiliations


      S Palanichamy1 T J Pandian1 2

      1. Department of Zoology, APA College, Paini - 624 602, India
      2. School of Biological Sciences, Madurai Kamaraj University, Madurai - 625 021, India
    • Dates


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