Leading up to the National Moth Week on July 22, we interview some contributors of moth observations.Listen to the first podcast episode with Nagesh O. S. on the IBP blog.

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2 documents found tagged psychophily [X]
  • Title
    Floral and reproductive biology of Sarpagandha Rauvolfia serpentine (Gentianales: Apocynaceae) in semi-arid environment of India
    Type
    Journal Article
    Description
    Sarpagandha plant Rauvolfia serpentina (Linn.) Benth., ex Kurz bears small, tubular white to pinkish flowers with gamopetalous corolla, containing nectar deep at the base of the corolla tube. Psychophilous mode of pollination appears to be prevalent. Flowering occurs during two summer months. Anthesis takes place in the morning when atmospheric temperature ranges from 25-29 0C, and anther dehiscence from 28-31 0C. Flower longevity is for a little more than two days. Nectar is produced on both the days of flower opening, and over a wide range of ambient temperature (29-44 0C). Flowers are protogynous preventing selfing. Pollen viability and stigmatic receptivity are for a short duration. When compared with the absolute reproductive potential, the realized reproductive potential is very low.
    Attribution
    Sihag R.C., Wadhwa N. (2011). Journal of Threatened Taxa 1(3) pp. 1432-1436; doi:10.11609/JoTT.o2337.1432-6
  • Title
    Wendlandia tinctoria (Roxb.) DC. (Rubiaceae), a key nectar source for butterflies during the summer season in the southern Eastern Ghats, Andhra Pradesh, India
    Type
    Journal Article
    Description
    Wendlandia tinctoria is a semi-evergreen tree species. It shows massive flowering for about a month during March-April. The floral characteristics such as the white colour of the flower, lack of odour, short-tubed corolla with deep seated nectar having 15-18% sugar concentration are well tailored for visitation by butterflies. The nectar is hexose-rich and contains the essential amino acids such as arginine and histidine and the non-essential amino acids such as alanine, aspartic acid, cysteine, glysine, hydroxyproline, tyrosine, glutamic acid and serine. The inflorescences with clusters of flowers provide an excellent platform for foraging by butterflies. The flowers are long-lived and attractive to butterflies. A variety of butterflies visit the flowers for nectar and in doing so, they pollinate them. Nymphalids are very diverse and utilize the flowers until exhausted. The flowers being small in size with a small amount of nectar compel the butterflies to do a more laborious search for nectar from a greater number of flowers. But, the clustered state of the flowers is energetically profitable for butterflies to reduce search time and also flight time to collect a good amount of nectar; such a probing behaviour is advantageous for the plant to achieve self- and cross-pollination. Therefore, the study shows that the association between W. tinctoria and butterflies is mutual and such an association is referred to as psychophilous. This plant serves as a key nectar source for butterflies at the study site where floral nectar sources are scarce during the summer season.
    Attribution
    Raju A.J.S., Ramana K.V., Lakshmi P.V. (2011). Journal of Threatened Taxa 3(3) pp. 1594-1600; doi:10.11609/JoTT.o2503.1594-600