Fishery biology of the goldfish<i>Carassius auratus</i>(Linnaeus, 1758) in Lake Trasimeno (Umbria, Italy)

Lorenzoni, Massimo; Dolciami, R.; Ghetti, Lucia; Pedicillo, Giovanni; Carosi, Antonella

doi:10.1051/kmae/20010001

Cited by 8 publications

(6 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The optimum lengths for 70, 80, 100, 140 mm mesh size nets (mesh size bar length converted to mesh size stretched) reported as 18.97, 21.68, 27.10, 37.94 cm according to Mahon et al (2000) by Lorenzoni et al (2010) are shows a great similarity with what we reported as 19.11, 21.84, 27.20 and 38.08 cm.…”

Section: Discussionsupporting

confidence: 86%

Untitled

Cılbız¹,

Hanol²,

Cilbiz³

et al. 2014

Turk. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

The aim of this study was determine the selectivity of gillnet and trammel net with different mesh sizes for C. gibelio in Eğirdir Lake. Gillnets with mesh sizes of 32, 40, 50, 60, 70, 80 and 90 mm; and trammel nets with of 100, 110, 120, 130 and 140 mm were tested for catching of C. gibelio. Fieldwork was carried out in two different station of Eğirdir Lake, in a monthly period from December 2009 to April 2010 and with a total of 10 catching trials. The SELECT method was used to determine the selectivity parameters. Number of 592 C. gibelio species were caught in the experiments which the lengths ranged between 7.3 -34.8 cm. According to the Bi-modal model which gave the lowest deviation for multifilament gillnets, the optimum lengths were determined as 8. 74, 10.92, 13.65, 16.38, 19.11, 21.84 , 32, 40, 50, 60, 70, 80, 90 mm göz açıklığındaki solungaç ağlarının optimum yakalama boyları sırasıyla 8,74, 10,92, 13,65, 16,38, 19,11, 21,84 ve 24,57 cm olarak; fanyalı ağlar için en düşük sapmayı veren Normal scale modeline göre yapılan hesaplamalar sonucunda 100, 110, 120, 130, 140 mm göz açıklığındaki fanyalı ağların optimum yakalama boyları sırasıyla 27,20, 29,92, 32,64, 35,36 ve 38,08 cm olarak bulunmuştur.

show abstract

Section: Discussionsupporting

confidence: 86%

Untitled

Cılbız¹,

Hanol²,

Cilbiz³

et al. 2014

Turk. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

show abstract

“…In particular, the population explosion of goldfish in the lake, following its introduction in 1988, has seriously reduced the traditional fishing activities, already impacted by the progressive decrease in water levels. Furthermore, it has contributed to the threat to southern pike and the whole ecosystem with its benthic feeding activities, which have contributed to a reduction in hydrophyte coverage, increased water turbidity and re‐suspension of nutrients that result in phytoplankton blooms (Carosi et al., ; Lorenzoni, Dolciami et al, ; Lorenzoni, Ghetti et al., ). Furthermore, goldfish can cause a negative impact on tench populations due to interspecific competition for food and habitat (Lusk, Lusková & Hanel, ).…”

Section: Discussionmentioning

confidence: 99%

“…Among these, the rapid expansion of the goldfish Carassius auratus (L.), accidentally introduced in 1988 during stocking activities with juvenile common carp Cyprinus carpio L. (Carosi, Ghetti & Lorenzoni, ), is particularly worrying due to the high invasiveness of the species (Crivelli, ). According to Lorenzoni, Dolciami, Ghetti, Pedicillo and Carosi () and Lorenzoni, Ghetti, Pedicillo and Carosi (), the use of the scientific name C. auratus in the present paper was based on diagnostic characters of the species, i.e. the number of gill rakers, the shape of the dorsal fin and the peritoneum colour (Balon, ; Kottelat & Freyhof, ).…”

Section: Introductionmentioning

confidence: 99%

Potential effects of global climate change on fisheries in the Trasimeno Lake (Italy), with special reference to the goldfish Carassius auratus invasion and the endemic southern pike Esox cisalpinus decline

Carosi

Ghetti²,

Padula³

et al. 2018

Fisheries Management Eco

View full text Add to dashboard Cite

Global climate changes have led to a gradual warming of the planet, resulting in decreased precipitation and rising temperatures in Mediterranean inland waters. In Trasimeno Lake, the largest shallow lake in Italy, some non‐native fish species have probably benefited from these changes as they are thermophilic and characterised by wider habitat preferences. Fish data collected by gillnets and fyke nets between 1956 and 2016, and by electrofishing in 1993 and 2014, were used to analyse changes over time in the fish community in relation to environmental conditions. An explosion in goldfish Carassius auratus (L.), following its introduction in 1988, coupled with water level fluctuations and reduced transparency, contributed to the reduction in commercial fish catch in the lake, and to the decline of the endemic southern pike Esox cisalpinus Bianco & Delmastro, already threatened by reduced spawning habitat and interspecific competition with other non‐native predatory fishes.

show abstract

“…Moreover, phenotypic plasticity is regarded to be more beneficial in variable environments than in constant environments, where a single optimal phenotype may be favoured instead of maintaining plasticity in traits (Schlichting & Pigliucci, ). The thermal conditions associated with lower latitudes could be responsible for the distinct patterns in the morphology of the Italian population, as the water temperature in Lake Trasimeno often exceeds 30° C in summer (Lorenzoni et al, ) and thus differs considerably from the other sites where A. melas for this study were sampled.…”

Section: Discussionmentioning

confidence: 99%

Morphological variability of black bullhead Ameiurus melas in four non‐native European populations

Novomeská

Katina

Copp

et al. 2013

Journal of Fish Biology

Self Cite

View full text Add to dashboard Cite

External morphology in black bullhead Ameiurus melas, a fish species considered to have high invasive potential, was studied in its four non-native European populations (British, French, Italian and Slovak). The aim of this study was to examine this species' variability in external morphology, including ontogenetic context, and to evaluate its invasive potential. Specimens from all non-native populations reached smaller body size compared to individuals from native populations. Juvenile A. melas were found to have a relatively uniform body shape regardless of the population's origin, whereas adults developed different phenotypes depending upon location. Specimens from the U.K., Slovak and French populations appeared to be rather similar to each other, whereas the Italian population showed the most distant phenotype. This probably results from the different thermal regime in the Italian habitat. Ameiurus melas from non-native European populations examined in this study showed some potential to alter the body shape both within and between populations. The phenotypic plasticity of A. melas, however, was not found to be as significant as in other invasive fish species. The results suggest that morphological variability itself is not necessarily essential for invasive success. The invasiveness of A. melas is therefore probably favoured by variations in its life-history traits and reproduction variables, together with some behavioural traits (e.g. voracious feeding and parental care) rather than by phenotypic plasticity expressed in external morphology.

show abstract

Fishery biology of the goldfishCarassius auratus(Linnaeus, 1758) in Lake Trasimeno (Umbria, Italy)

Cited by 8 publications

References 21 publications

Untitled

Untitled

Potential effects of global climate change on fisheries in the Trasimeno Lake (Italy), with special reference to the goldfish Carassius auratus invasion and the endemic southern pike Esox cisalpinus decline

Morphological variability of black bullhead Ameiurus melas in four non‐native European populations

Contact Info

Product

Resources

About