MORPHOLOGY AND PHYLOGENY OF SWAMP BUFFALOES (Bubalus bubalis) IN CALAYAN ISLAND, CAGAYAN

Alexander M. Paraguas, Therese Patricka C. Cailipan, Ester B. Flores, Lilian P. Villamor

Abstract


Swamp buffalo is considered as a single and homogenous breed in the Philippines. The study aimed to establish the morphological and molecular characteristics of swamp buffaloes in Calayan Island, Cagayan. Morphology and morphomet­rics of body, horn, face and neck were recorded. A total of 64 sequences from the mtDNA cytochrome c oxidase I (COI) and 21 SRY sequences were includ­ed for phylogenetic analysis for maternal and paternal lineages, respectively. On average, males have significantly greater values (P<0.05) than females for traits measured except for height and distance and width of horns which in­dicated sexual dimorphism. The coat color for gray is predominant over the black and brown. The inferred phylogenetic tree based on COI sequences, with high statistical support (BP=100%), showed one clade and separated by two clusters of swamp and riverine buffaloes. This showed the usefulness of COI and SRY genetic markers to discriminate breeds of B. bubalis swamp-type with riverine-type and revealed the high affinity of swamp buffaloes in the Calayan Island with those in the PCC Institutional Herds and Asian countries. There­fore, the combined data on the morphological and molecular characteristics showed that the buffaloes in Calayan Island are of swamp-type buffaloes and suitable for the establishment of the Philippine carabao conservation.


Keywords


Bubalus bubalis, Calayan Island, COI, conservation, SRY gene

Full Text:

PDF

Refbacks

  • There are currently no refbacks.


Copyright © 2020 Philippine Society of Animal Science