Vitellogenesis and Its Control in Malacostracan Crustacea

Charniaux-Cotton, Hélène

doi:10.1093/icb/25.1.197

Cited by 161 publications

(73 citation statements)

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“…The various stages of oogenesis in amphipods have been studied in O. gammarella [39]. Amphipods in general lay few eggs compared with many decapods, but the oocytes grow to a large size, which requires a large amount of the yolk protein vitellin [40]. Culture conditions that provide Fig.…”

Section: Ovarian Cycle In Amphipodsmentioning

confidence: 99%

“…Lateral view of the position of the neuroendocrine X organ/sinus complex, endocrine organs, and the reproductive system of a gammaridean amphipod in anatomical relation to some other visceral structures. Modifed after Charniaux-Cotton and Payen [40]. animals with a continuous food supply containing omega-3 polyunsaturated fatty acids support high fecundity in the detritus-feeding amphipod Melita plumulosa [41].…”

Section: Ovarian Cycle In Amphipodsmentioning

confidence: 99%

“…On the contrary, seasonal limitation of essential omega-3 polyunsaturated fatty acids and essential amino acids can reduce the fecundity and population abundances of the deposit-feeding amphipods Leptocheirus plumulosus and Monoporeia affinis in the field [42,43]. Vitellogenesis in the amphipod O. gammarella, involves two phases, primary and secondary vitellogenesis [40].…”

Section: Ovarian Cycle In Amphipodsmentioning

confidence: 99%

“…At the end of the intermolt, the oocyte is no longer attached to the follicular tissue because of the retraction of the macro-and microvilli [39]. Ovulation transpires by means of its own movements during mating and following ecdysis [40]. The breakdown of the germinal vesicle occurs some hours before ecdysis in O. gammarella [44].…”

Section: Ovarian Cycle In Amphipodsmentioning

confidence: 99%

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Review of the reproductive biology of amphipods and their endocrine regulation: Identification of mechanistic pathways for reproductive toxicants

Hyne¹

2011

Enviro Toxic and Chemistry

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Abstract-The reproductive biology of amphipods is reviewed to update the knowledge of the male and female reproductive processes of oogenesis and spermatogenesis as well as the endocrine systems of amphipods with the aim of advancing studies of reproductive toxicology. The ovarian and reproduction cycles of female gammaridean amphipods are closely correlated with the molt cycle, which is under direct control by the steroid hormone 20-hydroxyecdysone. The ability of males to copulate and subsequently for females to ovulate is restricted to the early postmolt period of the females. New developments in our understanding of the molt cycle and the endocrine regulatory pathways for reproduction using genomics techniques on other crustacean species are also discussed. The arthropod sterol ponasterone A or xenobiotics such as the fungicide fenarimol have been shown to elicit endocrine disruption in some crustaceans by acting as an agonist for 20-hydroxyecdysone at the ecdysone receptor or by inhibiting the synthesis of 20-hydroxyecdysone, respectively, resulting in disruption of molting and reproduction. Recent studies suggest that cadmium can inhibit secondary vitellogenesis in amphipods. Experimental approaches for examining the metabolic pathways associated with ecdysteroid hormonal signaling or metabolism, exoskeleton maintenance and molting, and the regulation of vitellogenin in amphipods are discussed. This information should aid in the identification of useful biomarkers for reproductive toxicity. Environ. Toxicol. Chem.

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Section: Ovarian Cycle In Amphipodsmentioning

confidence: 99%

Section: Ovarian Cycle In Amphipodsmentioning

confidence: 99%

Section: Ovarian Cycle In Amphipodsmentioning

confidence: 99%

Section: Ovarian Cycle In Amphipodsmentioning

confidence: 99%

See 2 more Smart Citations

Review of the reproductive biology of amphipods and their endocrine regulation: Identification of mechanistic pathways for reproductive toxicants

Hyne¹

2011

Enviro Toxic and Chemistry

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“…Ecdysteroids serve a functional role in crustaceans (and in platyhelminthes, nematodes, and annelids; Fingerman, 1997); 20-hydroxyecdysone, for example, controls the moulting processes in crustacea (and, perhaps, the production of vitellogenin), and although there is no direct evidence of impact of (xeno)oestrogens on synthesis of the ecdysteroid, links have been made with the inhibition of moulting and growth retardation (Charniaux-Cotton, 1985;Quackenbush, 1986;Zou & Fingerman, 1997a,b;Brown et al, 1999). Thus, several experimental studies indicate that oestrogens and oestrogen mimics such as alkylphenols could interact with crustacean developmental pathways: exposure to NP inhibits moulting, growth and the metabolic elimination of testosterone in the water flea Daphnia magna (Comber et al, 1993;Baldwin et al, 1995;Zou & Fingerman, 1997b); prenatal NP exposure results in a high proportion of morphological deformities in juvenile Daphnia galeata (Shurin & Dodson, 1997); and life history effects have been observed in the copepod Tisbe battagliai at NP concentrations of 20 µg l -1 (Bechmann, 1997).…”

Section: Invertebratesmentioning

confidence: 99%

Partitioning, bioavailability and effects of oestrogens and xeno-oestrogens in the aquatic environment

et al. 2005

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This review provides insights into the distribution and impact of oestrogens and xenooestrogens in the aquatic environment and highlights some significant knowledge gaps in our understanding of endocrine disrupting chemicals. Key areas of uncertainty in the assessment of risk include the role of estuarine sediments in mediating the fate and bioavailability of environmental (xeno)oestrogens (notably their transfer to benthic organisms and estuarine food chains), together with evidence for endocrine disruption in invertebrate populations.Emphasis is placed on using published information to interpret the behaviour and effects of a small number of 'model compounds' thought to contribute to oestrogenic effects in nature; namely, the natural steroid 17β-estradiol (E2) and the synthetic hormone 17α-ethinylestradiol (EE2), together with the alkylphenols octyl-and nonylphenol (OP, NP) as oestrogen mimics. Individual sections of the review are devoted to sources and concentrations of (xeno)oestrogens in waterways, sediment partitioning and persistence, bioaccumulation rates and routes, assays and biomarkers of oestrogenicity, and, finally, a synopsis of reproductive and ecological effects in aquatic species.

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Characterization of vitellogenin and vitellin from land crabPotamon potamios: Identification of a precursor polypeptide in the molecule

Pateraki

Stratakis

1997

J. Exp. Zool.

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A female‐specific protein, vitellogenin (Vg), and its corresponding egg vitellin (Vn) were identified in the land crab Potamon potamios. Electrophoretic analysis of the hemolymph protein during the annual reproduction cycle revealed that the processing of vitellogenesis did not occur in males or in females of a previtellogenic stage. The analysis of ovarian and egg extracts revealed the presence of Vn, which was identical to Vg. Both Vg and Vn were present in three different aggregational states that represented monomeric, dimeric, and trimeric species of the proteins. In both proteins, the predominant form was the dimeric, which had a molecular mass of 551 kDa for Vg and 510 kDa for Vn. Under denaturing conditions, each of the individual Vg and Vn aggregates released three polypeptides with molecular masses of 115, 105, and 85 kDa. In spite of the difference in terms of native molecular mass, the Vg and Vn were similar in their lipid, carotenoid, and carbohydrate composition. However, Vg of some animals contained a fourth polypeptide with a molecular mass of 181 kDa. This polypeptide and the three other Vg and Vn polypeptides were immunoreactive against anti‐Vg prepared from the 85 kDa Vg polypeptide. Furthermore, proteolytic cleavage experiments confirmed that the 115 and 105 kDa Vg polypeptides were derived from the 181 kDa polypeptide. We conclude that the presence of the 181 kDa polypeptide in the Vg molecule resulted in the higher molecular mass of Vg. J. Exp. Zool. 279:597–608, 1997. © 1997 Wiley‐Liss, Inc.

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Vitellogenesis and Its Control in Malacostracan Crustacea

Cited by 161 publications

References 0 publications

Review of the reproductive biology of amphipods and their endocrine regulation: Identification of mechanistic pathways for reproductive toxicants

Review of the reproductive biology of amphipods and their endocrine regulation: Identification of mechanistic pathways for reproductive toxicants

Partitioning, bioavailability and effects of oestrogens and xeno-oestrogens in the aquatic environment

Characterization of vitellogenin and vitellin from land crabPotamon potamios: Identification of a precursor polypeptide in the molecule

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