Chronic histopathological effects of parathion and 2,4-D on female gonads of Chasmagnathus granulata (Decapoda, Brachyura)

Rodríguez, Enrique M.; Schuldt, Miguel; Romano, Luís Alberto

doi:10.1016/0278-6915(94)90157-0

Cited by 24 publications

(29 citation statements)

References 15 publications

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“…Methoprene treatment significantly reduced oocyte growth as evidenced by a fall in the mean oocyte diameter in all the phases of oogenesis. Our findings were supported by the observations of Payen and Costlow (1977) and Rodriguez et al (1994). Cadmium inhibited oocyte growth was reported in marine and freshwater decapods (Rodriguez et al, 2000;Padmanabhan and Mohan, 2013).…”

Section: Discussionsupporting

confidence: 82%

“…Our findings were supported by the observations of Payen and Costlow (1977) and Rodriguez et al (1994). Cadmium inhibited oocyte growth was reported in marine and freshwater decapods (Rodriguez et al, 2000;Padmanabhan and Mohan, 2013). In the freshwater prawn Macrobrachium rosenbergii, the diameter of previtellogenic and vitellogenic oocytes decreased with increase in tributyltin (TBT) concentration (Revathi et al, 2013).…”

Section: Discussionsupporting

confidence: 82%

“…Cadmium inhibited oocyte growth was reported in marine and freshwater decapods (Rodriguez et al, 2000;Padmanabhan and Mohan, 2013). In the freshwater prawn Macrobrachium rosenbergii, the diameter of previtellogenic and vitellogenic oocytes decreased with increase in tributyltin (TBT) concentration (Revathi et al, 2013). Conversely, chronic exposure to sublethal concentration of parathion caused a significant increase in the size of previtellogenic and vitellogenic oocytes in C. granulata (Rodriguez et al, 1994).…”

Section: Discussionmentioning

confidence: 99%

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Impact of methoprene on oogenesis of the freshwater crab Travancoriana schirnerae Bott, 1969 (Decapoda: Gecarcinucidae)

Padmanabhan¹,

Raghavan²,

Ayanath³

2017

Braz. J. Biol. Sci.

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Abstract. The current study investigated the impact of methoprene during different phases of oogenesis in the freshwater crab Travancoriana schirnerae Bott, 1969 (Decapoda: Gecarcinucidae), a non-target organism abundant in the wetlands of Wayanad, Kerala, India. Sublethal doses of methoprene impaired ovarian growth as evidenced by reduction in gonadosomatic values, fall in mean oocyte diameter and histopathological changes in all the phases of oogenesis. A significant drop in the proportion of mature oocytes in the experimental crabs were noticed, i.e. methoprene treatment delayed the growth of avitellogenic oocytes to previtellogenic and previtellogenic to early, middle or late vitellogenic stages. Reduction in proliferation of oogonia in the germinal zone and ruptured oolemma in chromatin nucleolus and perinuclear stage oocytes was persistent. Histopathological changes in the primary vitellogenic oocytes include karyoplasmic clumping, perinuclear space atresia, shrinkage and vacuolation of ooplasm, reduction in size of yolk globules and vacuolated globules and degeneration of follicle epithelium. Methoprene negatively affected yolk platelet formation as evidenced by the irregularly fused and distorted yolk platelets of late vitellogenic oocytes. The observed cellular deformities possibly suggest the direct effects of methoprene on the oocytes through general metabolism and growth or through hormones controlling ovarian growth.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

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Impact of methoprene on oogenesis of the freshwater crab Travancoriana schirnerae Bott, 1969 (Decapoda: Gecarcinucidae)

Padmanabhan¹,

Raghavan²,

Ayanath³

2017

Braz. J. Biol. Sci.

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“…Along with all the compounds provided by the hepatopancreas, lipophilic pesticides migrate to the ovaries (Lubzens et al, 1995). The effects of these biocides include abnormalities in shape, as the loss of the typical spherical shape of ovarian follicles; abnormal oocyte area increase or decrease, depending on pesticide type; and oocyte atresia (Rodriguez et al, 1994, Lee et al, 1996. The abnormal development of the ovaries causes a reduction in the available oocytes for fecundation, with the consequent reduction in eggs and the future brood, decreasing the population over the short and medium term.…”

Section: Histopathological Effects On Female Gonadsmentioning

confidence: 99%

“…Embryos grow and feed on the lipid reserves present on the vellum, with the consequent intake of pesticides. This may provoke not only the death of the embryos, with the release of dead eggs by the female, but also sublethal effects, such as abnormal size in eggs; deformation of embryos, such as tissue dropsy, atrophy, abnormal or depigmented eyes; and abnormalities in the pleon, telson, and spine, pereiopods and pleopods (Rodriguez et al, 1994;Saravana Bhavan & Geraldine, 2001). Deformation may cause difficulties in hatching or in brood survival, as activities such as swimming and searching for prey or escaping from predators may be hampered, and even moulting may not be successfully completed (Fig.…”

Section: Reproduction Effectsmentioning

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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Effects of glyphosate on egg incubation, larvae hatching, and ovarian rematuration in the estuarine crab Neohelice granulata

Avigliano

Alvarez

Loughlin

et al. 2014

Enviro Toxic and Chemistry

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Ovigerous females of the estuarine crab (Neohelice granulate) were exposed to both pure glyphosate (2.5 mg/L and 5 mg/L) and a glyphosate formulation (Roundup Ultramax, containing glyphosate at 2.5 mg/L acid equivalent). At the end of the egg incubation period, a significant reduction in the number of hatched larvae was seen as a result of Roundup exposure. Additionally, several larvae abnormalities were seen in both pure glyphosate (2.5 mg/L) and Roundup treatments, such as hydropsy and hypopigmented eyes, and atrophied eyes were observed in the Roundup treatment. To evaluate the effect of the herbicide on ovarian rematuration, females remained exposed for 32 d. Pure glyphosate at 2.5 mg/L stimulated ovarian maturation over control levels, mainly in terms of a higher gonadosomatic index and a higher percentage of vitellogenic oocytes. A plausible hypothesis to be tested in further experiments is that exposure to glyphosate disrupts the hormonal system controlling reproduction.

show abstract

Chronic histopathological effects of parathion and 2,4-D on female gonads of Chasmagnathus granulata (Decapoda, Brachyura)

Cited by 24 publications

References 15 publications

Impact of methoprene on oogenesis of the freshwater crab Travancoriana schirnerae Bott, 1969 (Decapoda: Gecarcinucidae)

Impact of methoprene on oogenesis of the freshwater crab Travancoriana schirnerae Bott, 1969 (Decapoda: Gecarcinucidae)

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

Effects of glyphosate on egg incubation, larvae hatching, and ovarian rematuration in the estuarine crab Neohelice granulata

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