paratrechina longicornis

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paratrechina longicornis

Messaggioda endervale » 16/10/2016, 10:29

ho sentito che le paratrechina sono riuscite a invadere pure l'italia, e sono interessatissimo a allevarne una colonia e chiunque si voglia sbarazzare di una regina o una piccola colonia mi contatti pure tramite pm, volevo anche linkare un articolo interessante a proposito delle paratrechina:

http://rspb.royalsocietypublishing.org/ ... 2.abstract

A study out today by Pearcy et al reveals that a common invasive ant, Paratrechina longicornis, is one of those oddballs:
from the abstract:
We discovered that the highly invasive longhorn crazy ant, Paratrechina longicornis, has evolved an unusual mode of reproduction whereby sib mating does not result in inbreeding. A population genetic study of P. longicornis revealed dramatic differences in allele frequencies between queens, males and workers. Mother–offspring analyses demonstrated that these allele frequency differences resulted from the fact that the three castes were all produced through different means. Workers developed through normal sexual reproduction between queens and males. However, queens were produced clonally and, thus, were genetically identical to their mothers. In contrast, males never inherited maternal alleles and were genetically identical to their fathers. The outcome of this system is that genetic inbreeding is impossible because queen and male genomes remain completely separate.
In other words, the DNA of males and queens are separate clonal lineages, while workers are hybrids between the two. This arrangement avoids the inbreeding problems associated with diploid males, possibly helping this species colonize new sites from small propagules.
What’s more, P. longicornis is not the only invasive ant with this reproductive quirk. Wasmannia auropunctata, the little fire ant, shares a similar system, suggesting that clonal reproductives and hybrid workers may be a more general strategy of invasive social insects.
For a better explanation than mine (as usual), Ed Yong has more.
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