Arthropod abundance commonly is used as an index for brood-habitat quality for northern bobwhite (Colinus virginianus) chicks. However, conventional arthropod sampling techniques may not measure the abundance of arthropods available to chicks. Human-imprinted chicks have been used to jointly measure arthropod abundance and availability; however, no studies have examined potential differences in growth rates and foraging behavior between pen and wild-strain chicks. Likewise, use of internal ligatures has not been tested. We compared growth (g/day) and foraging rates (g/chick/30 minutes) between pen and wild-strain chicks and foraging rates between ligatured and nonligatured chicks. At 9 days post-hatch, pen-strain chicks (LSMEANS=20.315, SE=0.456) weighed more than wild-strain chicks (LSMEANS=17.665, SE=0.556; F1,1013=32.34, P <0.001). Foraging rate did not differ between ligatured (x̄=0.041, SE=0.007) and nonligatured (x̄=0.028, SE=0.004) chicks (t38=−1.69, P=0.100). Pen-strain chicks consumed slightly greater dry biomass than wild-strain chicks, but both consumed similarsized arthropods. Ligatured, commercially produced chicks may serve as a reasonable biological assay for indexing arthropod availability and brood-habitat quality for wild northern bobwhite chicks.
How to translate text using browser tools
1 June 2005
Use of imprinted northern bobwhite chicks to assess habitat-specific arthropod availability
Mark D. Smith,
L. Wes Burger
ACCESS THE FULL ARTICLE
It is not available for individual sale.
This article is only available to subscribers.
It is not available for individual sale.
It is not available for individual sale.
Arthropods
brood habitat
chicks
Colinus virginianus
imprinting
invertebrates
ligature