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3 documents found tagged eggs [X]
  • Title
    A first report of egg parasitism in the Tropical Tasar Silkworm Antheraea mylitta (Drury) occurring on cashew
    Type
    Journal Article
    Description
    The present study has documented egg parasitism in Tropical Tasar Silkworm for the first time. The parasitoid is Anastatus leithi (Walker) belonging to Eupelmidae family. It is a solitary koinobiont endoparasitoid, emerges out as adults from the tasar eggs in 17-20 days during August- September. The parasitism rate was recorded at 11.90 percentage.
    Attribution
    K. Vanitha & S. Santhosh, Journal of Threatened Taxa, Vol 8, No 7 (2016); pp. 9045–9047 http://dx.doi.org/10.11609/jott.2456.8.7.9045-9047
  • Title
    Checklist and nesting patterns of avifauna in and around Mayiladuthurai region, Tamil Nadu, India
    Type
    Journal Article
    Description
    Seventy-five taxa of birds belonging to 41 families were recorded in the Mayiladuthurai region, Tamil Nadu, India during January 2006 to December 2006. Sixty-two species of these were residents and 13 were local migrants. Among the birds recorded in this study, about 26 species were insectivores and other dominating types included omnivores, predators, granivores and frugivores. Breeding habits of 30 species were recorded, of five different nesting types, viz., cup nesters, cavity / hole nesters, platform nesters, pendant nesters and ground nesters. The birds used a variety of nesting materials, mostly twigs, fibres, sticks, leaves and grasses for nest construction. Thirteen species laid pure white eggs without any markings and nine species laid white eggs with various colour combinations and markings. Some species laid glossy blue, blue green, red and brown coloured eggs.
    Attribution
    Ali A.M.S., Asokan S., Manikannan R., Radhakrishnan P. (2011). Journal of Threatened Taxa 6(3) pp. 1842-1850; doi:10.11609/JoTT.o2299.1842-50
  • Title
    Breeding biology of the Small Bee-eater Merops orientalis (Latham, 1801) in Nagapattinam District, Tamil Nadu, India
    Type
    Journal Article
    Description
    The breeding biology of Small Bee-eater Merops orientalis was studied in Nagapattinam District of Mannampandal, Tamil Nadu, India between 2005 and 2006. A total of 34 nests were studied and the bee-eaters were found to excavate long tunnels ranging in length from 79 to 125cm (104.9±123.48 cm) and ending in widened egg chambers. The mean diameter and circumference of the entrance hole opening was 8.94±1.03 cm and 26.9±3.55 cm respectively. They excavated nest holes at a mean height of 52.1±2.69 cm from the bottom and 158.7±4.11 cm from the top of sandy river banks. The clutch size varied from 3 to 6 with a mean of 3.5±0.88 and clutches of three were very common. The egg dimensions ranged between 23.0 x 20.0 mm and 18.0 x 14.0 mm. The weight of the eggs varied between 2.0 and 5.0 g (3.3±0.65 g). The mean incubation period of the Small Bee-eater was 14.4±1.01 days and both sexes took part in the incubation. The Small Bee-eater laid 56 eggs, of which 43 hatched (76.7%) and 36 flewout of the nest, making the fledgingsuccess 83.7%. The newly hatched nestlings were 3.16 g in weight and reached a maximum of 23.16 g on day 24. A reduction in weight was noticed in the last few days and 20.75g was reached on day 27. The other body parts attained maximum maturity from hatching to fledging.
    Attribution
    Asokan S., Ali A.M.S., Manikannan R. (2010). Journal of Threatened Taxa 4(2) pp. 797-804; doi:10.11609/JoTT.o2273.797-804