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Evolusi perilaku ular pacaran  bertempur

Sebuah penelitian kecil menunjukkan ular mungkin telah mengembangkan perilaku pacaran dan perilaku memerangi antara jantan dengan jantan , seperti moving  undulations , leher menggigit leher  , dan spur-poking  , dari waktu ke waktu ......read more

Evolution of snake courtship and combat
behavior

Date:

September 24, 2014

Source:

PLOS

Summary:

A small study suggests snakes may have developed courtship and male-to-male
combat behavior, such as moving undulations, neck biting, and spur-poking, over
time.

.......................

A small study suggests snakes may have developed courtship and male-to-male
combat behavior, such as moving undulations, neck biting, and spur-poking, over
time, according to a study published September 24, 2014 in the open-access
journal PLOS ONE by Phil Senter from
Fayetteville State University and colleagues.

Behaviors involved in courtship and male-to-male combat have been recorded
in over 70 snake species from five families in the clade Boidae and
Colubroidea, but before now, scientists had yet to look for evolutionary
relationships between these behaviors.

The authors of this study analyzed 33 courtship and male-to-male combat
behaviors in the scientific literature by plotting them to a phylogenetic tree
to identify patterns. The authors identified the patterns in behaviors, which
was not always possible, and then used the fossil record to match the behaviors
to the snakes' evolution.

Researchers found that male-to-male combat of common ancestors of Boidae
and Colubridae in the Late Cretaceous likely involved combatants raising the
head and neck, attempting to topple each other. Poking with spurs may have been
added in the Boidae clade. In the Lampropeltini clade, the toppling behavior
was replaced by coiling without neck-raising, and body-bridging was added.
Snake courtship likely involved rubbing with spurs in Boidae.

In Colubroidea, courtship ancestrally involved chin-rubbing and head- or
body-jerking. Various colubroid clades subsequently added other behaviors, like
moving undulations in Natricinae and Lampropeltini, coital neck biting in the
Eurasian ratsnake clade, and tail quivering in Pantherophis. Although many gaps
in the evolution of courtship and combat in snakes remain, this study provides
a first step in reconstructing the evolution of these behaviors in snakes.







Story Source:

The above story is based on materials provided by PLOS. Note:
Materials may be edited for content and length.







Journal Reference:

1.   
Phil Senter, Shannon M. Harris, Danielle L. Kent.Phylogeny of Courtship
and Male-Male Combat Behavior in Snakes. PLoS ONE, 2014; 9 (9):
e107528 DOI: 10.1371/journal.pone.0107528

http://www.sciencedaily.com/releases/2014/09/140924144939.htm

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