Premium
Variation of reproductive effort between parthenogenetic and sexual populations of the scorpion Tityus columbianus
Author(s) -
Lourenĉo Wilson R.,
Cuéllar Orlando,
Méndez de la Cruz Fausto R.
Publication year - 1996
Publication title -
journal of biogeography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 158
eISSN - 1365-2699
pISSN - 0305-0270
DOI - 10.1111/j.1365-2699.1996.tb00028.x
Subject(s) - parthenogenesis , biology , litter , ecology , zoology , reproduction , sexual reproduction , productivity , fishery , economics , macroeconomics , embryo
. Geographic differences in reproductive effort were examined between sexual and parthenogenetic populations of the Colombian scorpion Tityus columbianus , from Iza (sexual) and from Mosquera (unisexual). The sexual females from Iza were significantly larger and had significantly greater relative litter mass (RLM) than the parthenogenetic ones from Mosquera. In both populations litter size increased significantly with female body size. Litter size and RLM in the sexuals averaged 12.7 and 0.49 respectively, and in the unisexuals 8 and 0.36. We suggest that the higher values are related to greater primary productivity at the Iza site.