A Study of the Cryptozoa of an Illinois Woodland

Cole, LaMont C.

doi:10.2307/1943574

Cited by 96 publications

(44 citation statements)

References 50 publications

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“…Specimens were collected during March-November 1973 and April-October 1974 using pitfall traps, quadrat sampling, "cryptozoa boards" (Cole, 1946) and handcollecting. Biweekly quadrat sampling from floodplain and upland transects (5 0.2-m2 quadrats/transect) and monthly examination of cryptozoa boards at floodplain, transition zone and upland locations (20 boards/transect) were discontinued after 1973 due to low centipede yield.…”

Section: Methods and Study Areamentioning

confidence: 99%

Microhabitats of Woodland Centipedes in a Streamside Forest

Summers¹,

Uetz²

1979

American Midland Naturalist

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Section: Methods and Study Areamentioning

confidence: 99%

Microhabitats of Woodland Centipedes in a Streamside Forest

Summers¹,

Uetz²

1979

American Midland Naturalist

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“…Gregariousness in egg laying was characterized with the Charlier coefficient of disturbance (Cole 1946: Del Solar 1968 which measured the deviation of the observed distribution. These aggregation indices, or measurements of gregariousness.…”

Section: Methodsmentioning

confidence: 99%

Light intensity as a factor in the choice of an oviposition site by Drosophila pseudoobscura and Drosophila persimilis

Wogaman¹,

Seiger²

1983

Can. J. Genet. Cytol.

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1983. Light intensity as a factor in the choice of an oviposition site by Drosophila pseudoobscura and Drosophila persirnilis. Can. J. Genet. Cytol. 25: 370-377. Light preferences for ovipositing of the sibling species Dro.sophila p.seudoobscura and D . persirnilis were measured in a multichoice chamber. Behavioral differentiation was found among sympatric populations of D . pseudoobscura and D. persirnilis and between allopatric populations of D . p.seudoobscura. Differences among isofemale lines within populations indicated genetic variability for the behavior. Both D. pseudooh.scura populations were less fecund in a uniform light environment than in the multichoice environment while D . persirnilis showed no difference in fecundity in the two environments. The patterns for general photoresponse and ovipositional light response were shown to be different for each population. Thus, the motivation to oviposit may affect photopreference differentially in each population. WOGAMAN, D. J., et M. B. SEIGER. 1983. Light intensity as a factor in the choice of an oviposition site by Drosophila p.seudoob.scura and Drosophila persirnilis. Can. J. Genet. Cytol. 25: 370-377. La preference de lumiere pour l'oviposition des especes cryptique Drosophila pseudoobscura et D . persirnilis fut mesurke dans une chambre de test d'alternatives multiples. On trouva des diffkrences de comportement entre les populations sympatriques de D . pLseudoobscura et de D. persirnilis et entre les populations allopatriques de D . pseudoobsc.ura. Les differences de cornportement entre les lignes isofernelles dans les populations indiquaient une variabilite genetique. Les deux populations de D . pseudoobsc.ura etaient moins fecondes dans un milieu de lumiere uniforme que dans un milieu de choix multiples, tandis que les D. per.sirni1i.s ne montrerent aucune difference de fecondite dans les deux milieux. Les modeles pour la photoreponse generale et pour la reponse a la lumiere pendant l'oviposition ktaient demontrks comme etant differents pour chaque population. Ainsi, la motivation d'ovipondre peut affecter la photoprkference diffCrentielle dans chaque population. IntroductionThe choice of an oviposition site is important for understanding the adaptiveness of Drosophiltr species. Carson (197 1 ), in a review of field studies, pointed out that Drosophila are generally more selective in choosing an oviposition site than a feeding site. He suggested that choice of a site for oviposition has been more important as an adaptation to the environment than choice of a feeding site. The few laboratory studies of ovipositing preference have generally utilized chemical cues and substrate surface preference. Both D . rnelanogaster and D . pseudoobsc.ura have been shown to be gregarious during egg laying which is probably due to a response to a chemical cue (Del Solar and Palomino 1966;Del Solar 1968), possibly a pheromone from males feeding at the site (Mainardi 1968). McKenzie and Parsons (1972) found that D. melunogaster showed a slight preference for ovipos...

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“…Because biological populations are typically clustered in the environment (Cole 1946), sampling designs providing good spatial coverage of units are preferred. For sampling during a single time period and for at least moderately abundant populations, good spatial coverage can usually be accomplished with designs such as a systematic sample with random starts, a stratified random sample, or a combination of these two (Cochran 1977, Wolter 1985.…”

Section: Plot Selection Across Timementioning

confidence: 99%

Comparison of Three Plot Selection Methods for Estimating Change in Temporally Variable, Spatially Clustered Populations.

Thompson

2001

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Abstract. Monitoring population numbers is important for assessing trends and meeting various legislative mandates. However, sampling across time introduces a temporal aspect to survey design in addition to the spatial one. For instance, a sample that is initially representative may lose this attribute if there is a shift in numbers and/or spatial distribution in the underlying population that is not reflected in later sampled plots. Plot selection methods that account for this temporal variability will produce the best trend estimates. Consequently, I used simulation to compare bias and relative precision of estimates of population change among stratified and unstratified sampling designs based on permanent, temporary, and partial replacement plots under varying levels of spatial clustering, density, and temporal shifting of populations. Permanent plots produced more precise estimates of change than temporary plots across all factors. Further, permanent plots performed better than partial replacement plots except for high density (5 and 10 individuals per plot) and 25% -50% shifts in the population. Stratified designs always produced less precise estimates of population change for all three plot selection methods, and often produced biased change estimates and greatly inflated variance estimates under sampling with partial replacement. Hence, stratification that remains fixed across time should be avoided when monitoring populations that are likely to exhibit large changes in numbers and/or spatial distribution during the study period.

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A Study of the Cryptozoa of an Illinois Woodland

Cited by 96 publications

References 50 publications

Microhabitats of Woodland Centipedes in a Streamside Forest

Microhabitats of Woodland Centipedes in a Streamside Forest

Light intensity as a factor in the choice of an oviposition site by Drosophila pseudoobscura and Drosophila persimilis

Comparison of Three Plot Selection Methods for Estimating Change in Temporally Variable, Spatially Clustered Populations.

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