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Studiile efectuate pana in prezent, au sugerat ca la baza acestui comportament se afla variatii care au avut loc de-a lungul evolutiei sau supravietuirea speciei, mergand pana la scheme ezoterice ale selectiei sexuale.
Insa se pare ca motivul acestui canibalism ciudat, este unul mult mai simplu.
Este vorba despre marime. “Daca masculii sunt mici, sunt mai usor de prins, prin urmare, devin o prada usoara”, declara Shawn Wilder de la Miami University din Ohio.
In fapt, femelele mari isi devoreaza partenerii mai mici decat ele din doua motive: pentru ca le este foame si pentru ca pur si simplu, avantajul marimii le permite sa faca asta.
Cercetatorii a descoperit ca in cazul speciei Hogna helluo, cunoscuta si sub denumirea de paianjenul-lup, masculii mari nu sunt niciodata mancati de partenere, in vreme ce masculii mici sunt consumati in aproximativ 80 % din cazuri.
Sursa : Fox News
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