International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Call for Papers | Fully Refereed | Open Access | Double Blind Peer Reviewed

ISSN: 2319-7064


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Research Paper | Applied Entomology and Zoology | India | Volume 12 Issue 12, December 2023


Study to Find the Phytogenic Relationship of Spiders from Ten Mixed Agroecosystems of Palakkad

Jayasree .S | Santhi .S


Abstract: Phylogenetic relatedness is a key diversity measure for the analysis and understanding of how species and communities evolve across time and space. A species level phylogenetic tree for spiders were constructed using retrieved COI sequences of 66 species of spiders belongs to 17 family identified from 10 agroecosystems of Palakkad. Phylogram of Araneidae family with 23 specieshave 4 clusters and 6 monophyletic taxa. In theNJ plot of Araneidae family (0.05), Phonognatha graeffei with divergence of 0.174 was found as an out-group species. Argiope keyserlingi was found as internal ancestor (0.075). Phylogenetic tree with 20 species of salticidae family carries 5 cluster with 8 monophyletic taxa. NJ plot of salticidae family at the rate 0.1, Phintella vittate (0.482) showed maximum divergence from the ancestor and seen as outgroup and Menemerus bivittatus (0.131) function as internal ancestor. Phylogram with 66 species of 17 family with available COI sequence showed 4clusters, the first cluster represents orb web spiders. Second cluster formed of species from Araneidae, Salticidae, Theraphosidae, Pholcidae, Oxyopidae, Desidae, Corinnidae family. Third cluster formed of Salticidae family and fourth cluster supports Thomisidae, Lycosidae, Cheiracanthiidae, Sparassidaefamily. NJ plot constructed with 66 species at 0.1 divergence rate in which Menemerus bivittatus (0.138) of Salticidae family was found as outgroup. Nephila pilipes (0.031) ofAraneidae family was found as internal ancestor from which all the spider species evolved. Evolutionary connection between species have no significance from which agroecosystemthe spiders were identified in this study.


Keywords: Phylogenetic tree, NJ plot, COI sequence, agroecosystem, spider diversity


Edition: Volume 12 Issue 12, December 2023,


Pages: 114 - 124


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