Hermaphrodite thinlip mullet Liza ramada (Risso, 1810) (Teleostei: Mugilidae) from Homa Lagoon (Izmir Bay-Aegean Sea)

Bayhan, Bahar; Acarlı, Deniz

doi:10.1111/j.1365-2109.2006.01508.x

Cited by 8 publications

(9 citation statements)

References 7 publications

(7 reference statements)

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“…The widest canal is outfitted with a barrier trap designed to catch fish. For a detailed map of the lagoon see Bayhan and Acarli (2006). Surface water temperature varies from 28ºC in September to -2 ºC in December with a yearly mean of 16ºC.…”

mentioning

confidence: 99%

“…Mean annual salinity is 31.9‰ with the highest of 44.4‰ and the lowest of 27‰ in November and April, respectively. The lagoon supports important commercial fisheries, including mullets (especially Liza saliens and Mugil cephalus), gilthead sea bream (Sparus aurata), sea bass (Dicentrarchus labrax), ell (Anguilla anguilla), and sole (Solea solea) in particular (Alpbaz and Kınacıgil 1988, Bayhan and Acarli 2006, Acarlı et al 2009). Data collection.…”

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confidence: 99%

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Length–weight relations for 29 fish species from Homa Lagoon, Aegean Sea, Turkey

Acarlı¹,

Kara²,

Bayhan³

2014

Acta Ichthyol. Piscat

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confidence: 99%

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confidence: 99%

Length–weight relations for 29 fish species from Homa Lagoon, Aegean Sea, Turkey

Acarlı¹,

Kara²,

Bayhan³

2014

Acta Ichthyol. Piscat

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“…Morphological modification and abnormal development of the gonads, including intersex, have been observed in a number of fish species living in polluted waters (Jobling et al 1998;Puzzi et al 2005), and have been linked to exposure to EDCs (Scholz & Kl€ uver 2009) and other chemicals released with human and industrial discharges (Van Aerle et al 2001;Tetreault et al 2011). In particular, gonadal disorders have been reported worldwide for several mullet species: C. labrosus was studied by Puy-Azurmendi et al (2013) and Bizarro et al (2014) at the Bay of Biscay (Spain); L. ramada by Bayhan and Acarli (2006) at the Homa Lagoon (Turkey) and Tancioni et al (2015Tancioni et al ( , 2016 at the Tiber estuary (Italy); and Figure 3. M. cephalus.…”

Section: Discussionmentioning

confidence: 99%

First evidence of intersex condition in extensively reared mullets from Sardinian lagoons (central–western Mediterranean, Italy)

Antuofermo

Ariu

Burrai

et al. 2016

Italian Journal of Animal Science

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The term intersex describes alterations in gonadal development with the simultaneous presence of male and female reproductive stages in the same gonad of a gonochoristic species. In coastal and estuarine environments, euryhaline fish living in polluted waters such as Mugilidae can frequently show these sexual anomalies. In this work, we analysed adult specimens of three species of euryhaline mullets (Chelon labrosus, Liza aurata and Mugil cephalus) from two Sardinian lagoons (Marcedd ı and San Teodoro) devoted to extensive aquacultural practices, in order to identify putative alterations in gonads and in gamete development. Overall, 13 of the 158 mullets examined (8.2%) were affected by gonadal disorders: four subjects (one C. labrosus, two L. aurata and one M. cephalus) exhibiting an intersex condition were found in the Marcedd ı lagoon and the other nine (five C. labrosus, two L. aurata and two M. cephalus) in the San Teodoro lagoon. Twelve of these gonads were classified as testis-ova (TOs) and one, belonging to a C. labrosus specimen, was a mixed gonadal tissue (MGT). Intersex condition was evaluated using an intersex index and all the recorded values showed a mild Ovotestis Severity Index (OSI). However, our findings suggest that fish gonadal disorders may be underestimated in extensive reared fish species, particularly in coastal brackish environments polluted by intensive agriculture and animal husbandry activities.

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“…Histological examinations of mullet gonads showed a high prevalence of intersex fish in Gernika and Pasaia. Mullets have been described as a gonochoristic species and the prevalence of natural hermaphroditism is non-existent or very low (Bayhan and Acarli 2006). However, a high percentage of hermaphrodite or intersex gonads has been reported in mullets from Portuguese estuaries polluted with PCBs and 1,1,1-trichloro-2-(p-chlorophenyl) 2-(o-chlorophenyl) ethane (DDT) (Ferreira et al 2002(Ferreira et al , 2004.…”

Section: Discussionmentioning

confidence: 99%

Hazards of the Endocrine Disruptors on Mullets (<i>Chelon labrosus</i>) from the Basque Coast (Bay of Biscay) Applying a Biomarker Based Approach

Abumourad¹,

Bizarro²,

Aragón³

et al. 2014

CYTOLOGIA

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Biomonitoring programs are essential tools to evaluate the biological quality status of aquatic environments. Recently, several compounds with endocrine disruption ability have been included in the list of priority substances and therefore, implementation of biomarkers assessing the presence and the effects of such substances are required. In the present work we applied a battery of chemical and biological markers in order to study the effects of endocrine disruptors in four thicklip grey mullet (Chelon labrosus) populations from the Basque Country (Bay of Biscay) inhabiting differently polluted estuaries: Arriluze and Pasaia are marinas located in highly industrialized and densely populated areas, Plentzia is a leisure and touristic town and Gernika is located in the Biosphere Reserve of Urdaibai. Chemical analyses of fish bile were performed in order to determine the uptake of endocrine disruptors. Liver, gonad and brain samples were collected for the study of expression levels of genes associated with reproduction and development such as vtg, cyp19a1 and a2, er and rxr. Histological analysis of gonads was performed to identify possible gametogenic alterations such as intersex gonads. Results indicated clear pollution-dependent responses among four estuaries. Endocrine disruption effects were very marked in mullets from Gernika and Plentzia; these two populations showed high vtg gene expression levels in male mullets together with high alkylphenol metabolites in the bile. Bisphenol A was also present at high concentration in mullets from Gernika. cyp19a2 was upregulated in male mullets from Plentzia. Intersex fish were found in Gernika and Pasaia, the last ones showing high hormone metabolites in bile. The combination of chemical and biomarker approaches in biomonitoring programmes can be a valuable tool to be implemented within the framework of the new water policies.

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Hermaphrodite thinlip mullet Liza ramada (Risso, 1810) (Teleostei: Mugilidae) from Homa Lagoon (Izmir Bay-Aegean Sea)

Cited by 8 publications

References 7 publications

Length–weight relations for 29 fish species from Homa Lagoon, Aegean Sea, Turkey

Length–weight relations for 29 fish species from Homa Lagoon, Aegean Sea, Turkey

First evidence of intersex condition in extensively reared mullets from Sardinian lagoons (central–western Mediterranean, Italy)

Hazards of the Endocrine Disruptors on Mullets (<i>Chelon labrosus</i>) from the Basque Coast (Bay of Biscay) Applying a Biomarker Based Approach

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