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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3 documents found tagged morphometry [X]
  • Title
    DNA barcoding of the Bryde’s Whale Balaenoptera edeni Anderson (Cetacea: Balaenopteridae) washed ashore along Kerala coast, India
    Type
    Journal Article
    Description
    Three whales washed ashore along Kerala coast of southwest India were identified as Bryde’s Whale Balaenoptera edeni Anderson based on sequencing of mitochondrial cytochrome c oxidase subunit 1 and cytochrome b genes. The results of mtDNA sequencing in the present study confirm the presence of B. edeni species of ‘Bryde’s Whale complex’ in the coastal waters of India.
    Attribution
    Bijukumar A, Jijith S.S, Kumar U. Suresh, George S (2012). Journal of Threatened Taxa 3(4) pp. 2436-2443; doi:10.11609/JoTT.o2859.2436-43
  • Title
    Ecological effects on morphometric development of the Indian Eagle Owl Bubo bengalensis
    Type
    Journal Article
    Description
    Univariate analysis based on logistic growth curve fitting and multivariate analysis using principle component analysis (PCA) were used to analyze complex patterns and correlations in morphometric data from 16 individuals of the Indian Eagle Owl Bubo bengalensis from the Deccan Plateau. Wing chord length, tarsus length, claw length, beak length, tail length and weight were measured from hatching until fledging (1-58 days old) . A logistic growth curve showed a good fit for all characters. Different characters showed different growth patterns according to their function in the developing nestling. PCA analysis revealed that different morphological characters are loosely coupled together during growth, and this could be attributed to the behavioural ecology of nestlings. By comparing the patterns in our data with data published from southern India, we also show that there is plasticity in the development in these geographically isolated populations.
    Attribution
    Pande S., Dahanukar N. (2011). Journal of Threatened Taxa 4(3) pp. 1677-1685; doi:10.11609/JoTT.o2609.1677-85
  • Title
    A preliminary report on the development of young Indian Eagle Owl Bubo bengalensis (Franklin, 1831) in and around Puducherry, southern India
    Type
    Journal Article
    Description
    Morphometric, weight and photographic data on the growth patterns of young Bubo bengalensis was obtained in three areas in and around Puducherry. We continuously monitored and observed the growth patterns of nine chicks in total between 10 and 60 days after hatching. Among the morphometric variables, bill and wing chord length showed a mild yet steady increase throughout the observation period, while tarsus length displayed a steep increase till the 20th day, fluctuated till the 40th day and then increased marginally till the 60th day. Body mass showed a steady increase before reaching a plateau between 35 and 45 days, after which only a marginal increase was observed. Chicks were born with whitish natal down. The prejuvenile moult occurred around the 14th or 15th day. Full juvenile plumage was attained by the 35th day and persisted even after 60 days. Morphometric data showed a marked variability, and in this context, ageing of nestlings based on measurements alone may not be accurate and must be complemented with feather moult patterns.
    Attribution
    Ramanujam M.E., Murugavel T. (2009). Journal of Threatened Taxa 10(1) pp. 519-524; doi:10.11609/JoTT.o1762.519-24