Effects of selected pesticides, metals and organometallics on development of blue crab (Callinectes sapidus) embryos

Lee, R.; Oshima, Yugi

doi:10.1016/s0141-1136(97)00072-x

Cited by 19 publications

(16 citation statements)

References 5 publications

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“…Juvenile blue crabs are more sensitive to contaminants than are adults (Lee & Noone 1995, Lee et al 1996, Lee & Oshima 1998, Horst & Walker 1999, and in this study juvenile crabs suffered much higher mortal- ity than adults when exposed to the same concentrations of Malathion (Fig. 3).…”

Section: Discussionsupporting

confidence: 48%

“…To better understand the potential effects of Malathion on blue crab populations, we elected to study the effects of Malathion on 2 life stages of blue crabs: adult (90 to 193 mm CW, measured along the largest lateral spine, tip to tip) and juvenile (8 to 35 mm CW). Earlier blue crab life stages have been studied extensively, and are more sensitive to pesticides and other contaminants than are adults (Sandoz & Rogers 1944, Lee & Noone 1995, Lee et al 1996, Whiting et al 1996, Lee & Oshima 1998, Horst & Walker 1999.…”

Section: Methodsmentioning

confidence: 99%

“…Many pesticides are designed to kill terrestrial arthropods. As arthropods, blue crabs can be susceptible to these chemicals (Pearson & Olla 1980, Horst & Walker 1995, Kennish & Ruppel 1996, Rebach & French 1996, Whiting et al 1996, Lee & Oshima 1998, Pierce et al 2001. For example, Methoprene runoff damaged post-molt adult blue crabs, decreased the number of successful hatching zoeae, was toxic to megalopae by delaying the first molt, and caused 80% mortality of larvae after 10 d (Horst & Walker 1999).…”

Section: Introductionmentioning

confidence: 99%

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Ambient Malathion concentrations modify behavior and increase mortality in blue crabs

Wendel¹,

Smee²

2009

Mar. Ecol. Prog. Ser.

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Organophosphate insecticides can compromise water quality and harm non-target species unintentionally. In this study, we examined the effects of a commonly used organophosphate insecticide, Malathion, on blue crabs Callinectes sapidus, which are an economically and ecologically important estuarine species. Adult and juvenile crabs were exposed to environmentally-occurring concentrations of Malathion at 2 salinity levels to determine how these factors would affect crab behavior and mortality. Initial Malathion concentrations of 1.0 ppb and 11.2 ppb caused a significant increase in mortality of juvenile blue crabs, and concentrations of 11.2 ppb caused a significant increase in mortality of adults, all within 36 h after exposure. Our results indicated that salinity did not affect blue crabs' susceptibility to Malathion at these concentrations. We measured the time needed for adult blue crabs to right themselves when placed on their backs before and after exposure to Malathion. After 1 h of exposure to Malathion concentrations of 11.2 ppb, adult crabs took significantly longer to right themselves, indicating that short-term exposure to Malathion at ecologically relevant concentrations can interfere with essential behaviors of blue crabs. Blue crab populations have been declining in recent years, and their decline has primarily been linked to overfishing. However, other mechanisms including pollution and disease may also contribute to this problem and require further investigation. Since blue crabs are important components of estuarine food webs, changes in blue crab mortality rates and behavior may have important consequences for entire estuarine systems.

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Section: Discussionsupporting

confidence: 48%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ambient Malathion concentrations modify behavior and increase mortality in blue crabs

Wendel¹,

Smee²

2009

Mar. Ecol. Prog. Ser.

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“…In addition to lethality, constant exposure to pesticides may cause differences in incubation periods and several abnormalities in embryos. Among these abnormalities, biocides may cause hydropsy, abnormal eye spots and several atrophies in the eyes, the pleon and the dorsal spine (Rodriguez & Pisanó, 1993;Lee & Oshima, 1998). All these abnormalities provoke the death of the juvenile, either from internal malformations of organs or from the incapability to moult successfully.…”

Section: Histopathological Effects On Female Gonadsmentioning

confidence: 99%

Freshwater Decapods and Pesticides: An Unavoidable Relation in the Modern World

Negro¹,

Senkman²,

Montagna³

et al. 2011

Pesticides in the Modern World - Risks and Benefits

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“…Considerable effort has been expended on evaluating the condition of salt marshes, and most recently, the integrity of salt marshes has been assessed using ecological indicators of stressor-specific, sublethal exposure and effects on resident species to provide early warnings of impairment (Mineau 1998, van Dam et al 1998. Crabs may be particularly useful indicator species of salt marsh condition because (1) they are among the largest, most abundant and conspicuous invertebrates living there, (2) their burrowing activities make them important engineers of these communities (Bertness 1985, Fiorillo 1994, (3) embryos are brooded externally, providing an easy, nondestructive way of evaluating impairment of this sensitive life stage (Lee & Oshima 1998), and (4) many species remain near their refuges (Crane 1975). Over the years an excellent understanding of crabs residing in salt marshes has developed in many parts of the world from studying ocypodid species, such as fiddler crabs (Uca spp.…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal movement of the lined shore crab Pachygrapsus crassipes in salt marshes and its utility as an indicator of habitat condition

Morgan¹,

Spilseth²,

Page³

et al. 2006

Mar. Ecol. Prog. Ser.

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The utility of the lined shore crab Pachygrapsus crassipes as an indicator of small-scale variation in the condition of salt marshes was determined by conducting detailed mark-recapture studies of the spatial and temporal patterns of movement in 2 marshes in northern and southern California, and by conducting a stable isotope study along a nutrient gradient at one of the marshes. Crabs (1158) were captured from creek bank and vegetated marsh habitats, tagged, and released. Most crabs were recaptured in the same trap where they were originally tagged, and on average, they traveled less than 5 m from the site of first capture. The mean distance traveled did not increase significantly with the time between captures. A high percentage of crabs (62.1%) tagged near the creek bank remained there; fewer tagged crabs moved between the creek bank and the marsh plain (18.2%) or remained on the marsh plain (12.6%). Crabs moved least along creek banks and farthest when crossing creeks, although few of them did the latter (6.2%). During spring tides, crabs moved from tidal creeks onto the marsh plain. The nitrogen isotope data mirrored the gradient in nutrient input, supporting the conclusion that P. crassipes remained and fed within a localized area. Thus, the lined shore crab can serve as an indicator of small-scale differences in contaminant exposure. Furthermore, semiterrestrial species that are readily sampled and move little are abundant around the world, making them ideal indicators of habitat condition.KEY WORDS: Movement · Indicator species · Mark-recapture · Nitrogen stable isotope · Crab · Pachygrapsus crassipes · Salt marsh Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 314: [271][272][273][274][275][276][277][278][279][280][281] 2006 understanding of crabs residing in salt marshes has developed in many parts of the world from studying ocypodid species, such as fiddler crabs (Uca spp.), which leave their burrows to forage during low tides (Crane 1975). However, our understanding of crabs occupying marshes along the west coast of North America is much more limited because the grapsid crabs Hemigrapsus oregonensis and Pachygrapsus crassipes primarily remain in burrows during daytime low tides (Hiatt 1942, Willason 1981, Ricketts et al. 1985, making them difficult to observe. The utility of crabs as an indicator of small-scale differences in habitat condition critically depends on the extent of their movements.Movement is a fundamental part of animals' lives, being essential for foraging, reproduction, and avoiding predators and competitors. However, movement receives more attention on land than in the marine environment, where sessile and sedentary lifestyles are more common due to (1) the delivery of food, (2) removal of waste, and (3) transfer of gametes by currents (Strathmann 1990). In the case of crabs, many juveniles and adults rely on heavy exoskeletons coupled with burrows, holes and crevices for protection from predators, seemingly moving little...

show abstract

Effects of selected pesticides, metals and organometallics on development of blue crab (Callinectes sapidus) embryos

Cited by 19 publications

References 5 publications

Ambient Malathion concentrations modify behavior and increase mortality in blue crabs

Ambient Malathion concentrations modify behavior and increase mortality in blue crabs

Freshwater Decapods and Pesticides: An Unavoidable Relation in the Modern World

Spatial and temporal movement of the lined shore crab Pachygrapsus crassipes in salt marshes and its utility as an indicator of habitat condition

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