Growth and nest hole size preferences in immature southern house spiders (Araneae: Filistatidae): Are they constrained consumers?
Keywords:
Kukulcania, arachnid, laboratory study, growth, allometryAbstract
In the laboratory, immature Kukulcania hibernalis (Hentz 1842) (Araneae: Filistatidae) exhibited a combination of isometric and posi tively allometric growth during the first 32 wk of life according to 9 measures of body size. When given an array of artificial holes to use as nest sites, spiders age 2, 8, and 24 wk tended to select holes proportionate to their body sizes. These findings raise the question of whether populations of K. hibernalis in the wild are constrained by the limited availability of suitably sized nest sites.
Sumario
En el laboratorio, los inmaduros de Kukulcania hibernalis (Hentz 1842) (Araneae: Filistatidae) exhiben una combinación de crecimiento isométrico y alométrico positivo durante las primeras 32 semanas de vida según nueve medidas de tamaño corporal. Cuando se les da una serie de cavidades artificiales para su uso como refugio, la arañas con edad de 2, 8 y 24 semanas tienden a seleccionar los agujeros que coinciden con sus tamaños corporales. Estos hallazgos plantean la pregunta de si, en la naturaleza, las poblaciones de K. hibernalis se ven limitadas por la disponibilidad limitada de refugios con tamaño adecuado.
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