Intersexuality in benthic harpacticoid copepods in the Firth of Forth, Scotland

Histological intersex (ovotestis) in the European lobster Homarus gammarus and a commentary on its potential mechanistic basis

“…Similar reports have also been published concerning intersexuality in copepods (Markevitch 1982, Ianora et al 1987, Moore & Stevenson 1991 and isopods (Munro 1953, Smith 1977, Korczynski 1985. In the majority of these cases, intersexuality has been reported as a manifestation of various anomalies in the external morphology of the abdomen and its appendages (see Moore & Stevenson, 1994). In the decapod crustaceans, one manifestation of intersexuality involves the presence of externally visible male and female genital openings.…”

Environmental Endocrine Disruption: An Effects Assessment and Analysis

“…However, the authors also noted that experiments searching for potential longer term effects on the veliger should be conducted before concluding that egg production depression is the most sensitive or important effect. Moore and Stevenson (316) reported intersexuality in the harpacticoid copepods, Paramphiascella hyberborea, Halectinosoma similidistinctum, H. sp., and Stenhelia gibba.…”

Endocrine disruption in the shore crab Carcinus maenas—a biomarker for benthic marine invertebrates?

“…Mar Ecol Prog Ser 288: [221][222][223][224][225][226][227][228][229][230][231][232] 2005 land (Moore & Stevenson 1991, 1994, the occurrence of intersex in a population of lobsters exposed to sewage effluent (Sangalang & Jones 1997), masculinisation of freshwater copepod species in North American lakes (Sillett & Stemberger 1998) and the presence of dual-gender imposex in freshwater crabs inhabiting Japanese TBT-uncontaminated mountain streams (Takahashi et al 2000). Gross et al (2001) reported that high numbers of females displayed abnormal vitellogenic oocytes and a reduced male/female size differential in amphipods (Gammarus pulex) found below sewage treatment works known to contain endocrine-disrupting chemicals in their effluent.…”

“…Higher levels of the femalespecific protein, vitellogenin (vtg) were found in both haemolymph and gonad homogenates of the clam Mya arenaria and the mussel Elliptio complanata, and related to chemical contamination of the sites (Blaise et al 1999, Gagne et al 2002. Other examples of effects in invertebrates include abnormal levels of intersexuality in several species of marine harpacticoid copepods along sewage-contaminated coasts of Scot-land (Moore & Stevenson 1991, 1994, the occurrence of intersex in a population of lobsters exposed to sewage effluent (Sangalang & Jones 1997), masculinisation of freshwater copepod species in North American lakes (Sillett & Stemberger 1998) and the presence of dual-gender imposex in freshwater crabs inhabiting Japanese TBT-uncontaminated mountain streams (Takahashi et al 2000). Gross et al (2001) reported that high numbers of females displayed abnormal vitellogenic oocytes and a reduced male/female size differential in amphipods (Gammarus pulex) found below sewage treatment works known to contain endocrine-disrupting chemicals in their effluent.…”