Toxic effects of the insecticide diflubenzuron (dimilin®) on survival and development of nauplii of the estuarine copepod, Eurytemora affinis

Savitz, J. D.; Wright, David; Smucker, Richard A.

doi:10.1016/0141-1136(94)90056-6

Cited by 22 publications

(20 citation statements)

References 31 publications

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“…In addition, Capuzzo et al (1984) showed that delayed development and lower growth rate in larval lobster exposed to petroleum hydrocarbons was related to alterations in normal patterns of lipid storage, utilization and synthesis. Copepod developmental rate and onset of reproduction were also delayed under aqueous exposure to 2,4-dichlorophenol and 4-chlorophenol (Kuiper & Hanstveit 1984) and insecticides (Allan & Daniels 1982, Savitz et al 1994, Wright et al 1996.…”

Section: Effects On Reproduction and Developmentmentioning

confidence: 95%

Effects of sediment-associated phenanthrene on survival, development and reproduction of two species of meiobenthic copepods

Gr¹,

Jw²

1997

Mar. Ecol. Prog. Ser.

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The lethal and sublethal toxlclty of phendnthrene (a polycyclic aromatic hydrocarbon, PAH) to 2 species of meiobenthic estuarine harpacticoid copepods (Schfzopera knabeni dnd Nitocra lacustrfs) was ~nvestlgated Individuals of different life stages ( n a u p l~u s copepodite, adult male and female) were exposed to sediment-associated phenanthrene In separate 10 d bioassays Overall A' lacustns (10 d LCj, values ranglng from 43 to 105 pg g ' d~y wt) was more sensitive than S knabeni (10 d LCSD values ranging from 84 to 349 pg g ' dry \vt) Signlflcant differences In life-stage-speclfic sensitivity wele observed for S knabeni, with the nauplll belng most seniltive tolloived by copepodltes and adults, adult males and females \Yere equally sensltlve For N Iacustris females wele significantly more sensltlve than all other stages no s i g n~f~c a n t d~tferences \yere evldent among the other stages Phenanthrene effects on offspring productlon were invest~gated In the adult 10 d b~oassay Significant decreases in offspring productlon occurred at sublethal concentratlons for S knabenl (as low as 22 1-19 g.' d r y wt) but d t concentratlons In the same lange as the 10 d LC5,values for A' ldcustr~s In addition phenanthrene slgnlficantly prolonged embryonic and larval development and decreased e g g hatching success for both species Our results suggest that PAHs have a negative effect on the reprod u c t~o n of melobenthic copepods at sublethal concentrations mostly due to a decrease In brood prod u c t~o n rate and impalrlnent of hatchlng Overall, deleterious effects were manifested in the same range of concentratlons for both species but deflnite specles-spec~flc differences In the pattern of responses were evident

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Section: Effects On Reproduction and Developmentmentioning

confidence: 95%

Effects of sediment-associated phenanthrene on survival, development and reproduction of two species of meiobenthic copepods

Gr¹,

Jw²

1997

Mar. Ecol. Prog. Ser.

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“…Eurytemora affinis nauplii were collected by separating adults using a 202 gm mesh Nitex screen and incubating them overnight as described previously by Savitz et al (1994). Environmental conditions, media and feeding regimes also followed these methods (Savitz et al 1994).…”

Section: Methodsmentioning

confidence: 99%

“…Significant effects of DFB are found at concentrations less than 10 p.p.b, in most cases. Although some investigators have addressed the effects of DFB on copepods (Miura and Takahashi 1974;Mulla et al 1975;Colwell and Schaeffer 1980;Tester and Costlow 1981;Antia et al 1985), the only study specifically addressing larval survival has been that of Savitz et al (1994). In the current work we focused on the timing of exposure relative to the life stage of the copepod Eurytemora affinis and the effect of DFB on brood production.…”

Section: Introductionmentioning

confidence: 99%

Effect of diflubenzuron on the maturation and reproductive success of the copepod Eurytemora affinis

et al. 1996

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: The insect growth regulator diflubenzuron (DFB) may have substantial effects on non-target organisms, especially crustaceans. By targeting the moulting process, DFB would be expected to elicit the most obvious effects on subadult crustaceans which moult frequently. Previous studies in this laboratory have demonstrated acute and chronic effects of DFB on survival and development of nauplii of the estuarine copepod Eurytemora affinis at water concentrations of less than 1 p.p.b. The present study examines the effects on maturation to adulthood and brood production. Effects on brood production were observed at 0.8 p.p.b. DFB in individuals exposed only during the copepodite stages. Significant effects on production of nauplii were documented only in the early exposure to 0.93 p.p.b. DFB. Inability of post-moult copepodites to completely cast exuviae also was documented in the exposed treatments. At salinities of 2, 10 and 15 p.p.t., survival from naupliar to adult stages was significantly reduced at 0.84 p.p.b. and none survived to adulthood at 1.7 p.p.b. These results suggest that DFB has substantial effects on survival and development of E. affinis at a water concentration of less than 1 p.p.b. DFB concentrations exceeding this concentration have been reported from Chesapeake Bay surface waters although there is no current evidence of potentially toxic concentrations overlapping with the known distribution of E. affinis in the bay.

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“…A more cost effective method of weed Approximately 1 to 6% of applied agrochemicals may be transported off-site by runoff and drainage, depending on the slope of the field, management practices, presence or absence of subsurface drains, and the quantity and timing of rainfall after application (Bengston et al, 1990;Leonard et al, 1979;Triplett Jr. et al, 1978). Several studies have demonstrated significant negative effects of pesticides on aquatic plants (Forney and Davis, 1981;Jones and Winchell, 1984) and estuarine organisms (Clark et al, 1993;Savitz et al, 1994;Scott, 1994).…”

Section: Discussionmentioning

confidence: 99%

Sustainability of Cold-Climate Strawberry Production Systems

Stevens¹

2006

Acta Hortic.

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Three cold-climate strawberry (Fragaria xananassa Duch.) production systems, conventional matted row (CMR), advanced matted row (AMR), and coldclimate plasticulture (CCP) were compared for aspects of sustainability including environmental impacts, economic viability and public acceptance over a three year production cycle. As a result of higher total yields, CMR had the highest overall revenue and estimated net profit of any system. The CCP had the lowest observed yield but the largest fruit in year one. Reduced fruit size and yield in the second harvest season indicate the CCP system may not be suitable for perennial production.Both the CCP and AMR production systems were better than CMR in preventing soil, nitrogen and pesticide loss due to rain-induced runoff, and had higher N uptake than CMR. The CCP and AMR systems were preferred over CMR in a pick-your-own consumer preference evaluation. AMR and CCP represent potential sustainable alternatives to the CMR system.

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Toxic effects of the insecticide diflubenzuron (dimilin®) on survival and development of nauplii of the estuarine copepod, Eurytemora affinis

Cited by 22 publications

References 31 publications

Effects of sediment-associated phenanthrene on survival, development and reproduction of two species of meiobenthic copepods

Effects of sediment-associated phenanthrene on survival, development and reproduction of two species of meiobenthic copepods

Effect of diflubenzuron on the maturation and reproductive success of the copepod Eurytemora affinis

Sustainability of Cold-Climate Strawberry Production Systems

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