In 2004, we studied the life history and ecology of a population of Pardosa sierra (Araneae, Lycosidae) from Cave Creek Canyon (Chiricahua Mountains, Arizona). Peak abundance for immatures occurred in July, September, and October. About 64% of all adult males and females were observed in April and May. Females were observed carrying egg sacs between 5 April and 3 August. Diet composition consisted primarily of beetles (18.4%), flies (15.3%), and ants (12.2%). Spiders were active during the day, as well as at night. Immatures and adults preferred sandy or rocky substrates, respectively. Under controlled laboratory conditions, the life cycle consisted of 9 instars, and mean carapace width increased from 0.66 mm (instar 1) to 2.26 mm (instar 9: adult males and females). Clutch size ranged from 35 to 92 (mean = 67.81). Gestation period ranged from 22 to 27 days (mean = 24.06). Significant positive correlations were found between female mass and size, offspring mass and size, female size and clutch size, and female size and clutch mass. Mean total clutch mass was 34.9% of mean female mass.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 51 • No. 3