Crude oil exposure affects air-breathing frequency, blood phosphate levels and ion regulation in an air-breathing teleost fish, Hoplosternum littorale

Endocrine, Physiological and Histopathological Responses of Fish and their Larvae to Stress with Emphasis on Exposure to Crude Oil and Various Petroleum Hydrocarbons

“…However, increased oxygen uptake was observed in cod exposed to a simulated oil slick (Johnstone and Hawkins, 1980). Brauner et al (1999) found elevated breathing frequency in the air breathing teleost Hoplosternum littorale exposed to crude oil.…”

“…Sediment containing aliphatic hydrocarbons had no effect on plasma Cl -concentrations of winter flounder Pleuronectes americanus (Payne et al 1995). Interestingly, Brauner et al (1999) found that WSF contaminated water had no effect on plasma Na + and K + concentrations in Hoplosternum littorale (a teleost from the Amazon), whereas crude oil exposure via the diet caused significant reductions in the plasma concentrations of these ions.…”

“…The hematocrit of cunners, Tautogolabrus adspersus (Payne et al 1978;Kiceniuk et al 1980) and Atlantic salmon (Aabel and Jarvi, 1990) and the hematocrit and hemoglobin of longhorn sculpin (Khan, 1991a) were unaffected after chronic exposure to crude oil. Hematocrits and blood hemoglobin concentrations were also unchanged in Hoplosternum littorale exposed to the WSF of crude oil (Brauner et al 1999) and hematocrit was not affected in winter flounder exposed to sediment contaminated with oil-base mud (Payne et al 1995). The apparent contradictions in haematological effects of petroleum hydrocarbons are likely to reflect a combination of differences in the level of petroleum hydrocarbons to which the fish have been exposed, any resultant gill damage, the length of time of exposure and species differences in sensitivity and catecholamine responses.…”

Effects of crude oil on survival, morphology, and anatomy of two aquatic macrophytes from the Amazon floodplains

“…Experiments performed with the oral ingestion of Urucu's crude oil by Hoplosternum littorale (tamoatá), a facultative air breathing fish showed that only one ingestion of 3 ml kg -1 of crude oil caused physiological alterations; however, no death was observed during the exposure time (72 h) (Brauner et al, 1999). In the present study, during the same period of time, the death of 80% E. polystachya individuals submitted to dosages from 0.08 to 15.89 l m -2 of crude oil occurred.…”

Growth of juvenile turbot in response to food pellets contaminated by fuel oil from the tanker ‘Prestige’

“…Large oil patches and sheens were washed onshore, blackening more than 550 km of the coast. Years after oil spills such as the 'Exxon Valdez' (USA) and the 'Braer' (UK), among others, research studies have documented the persistence of negative effects of oil on marine fish (Norcross et al 1996, Marty et al 1997, Stagg et al 1998, Brauner et al 1999, Jewett et al 2002. Among other effects of crude oil on individual marine fish, somatic growth is reduced in experimental fish and in fish from natural populations exposed to crude oil and/or fed oil-contaminated food or prey (Schwartz 1985, Norcross et al 1996, Stagg et al 1998, Omoregie & Ufodike 2000, Peterson 2001, Birtwell & McAllister 2002.…”