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International Journal of Aquatic Biology، جلد ۹، شماره ۱، صفحات ۲۳-۳۲
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Population structure and dynamics of the invasive Procambarus clarkii (Girard, 1852) in a Tiber river Ramsar site, Central Italy
چکیده انگلیسی مقاله Procambarus clarkii is a native species of Central America, but strongly invasive in many regions of the world. An investigation on the red swamp crayfish was carried out to obtain more information about its population dynamics in the Tiber River, in Central Italy. A total of 900 individuals, both males and females, were sampled within two different campaigns (2017 and 2019) aimed at collecting biometric data. A strong fishing effort was deployed (more than 100 nets set), to guarantee a large and randomized number of samples. The crayfish populations were grouped into seven different cohorts, according to Bhattacharya’s method. The population showed a balanced sex ratio, the average cephalothorax length was 42.52 mm, with the most represented size class between 40-50 mm. K and L ∞ , as well as the growth parameter index (Ø), the mortality rate (Z), and longevity value (t max ), were calculated. K and Ø values resulted very high, showing an impressive growth rate in the study area; t max ranged from 4 to 5 years, L ∞ values were lower compared with other studies (58.0-59.0 mm), while Z was very high for this population (4.2-4.5 year). The results revealed that crayfish population dynamics can be complex and vary depending on habitat type, available trophic resource and competition.
کلیدواژه‌های انگلیسی مقاله Crayfish, Freshwater, Invasive alien species, Population dynamics.
نویسندگان مقاله | Maxim Veroli
Centro di ricerca “Zootecnia e Acquacoltura”, Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria (CREA), Via Salaria, 31, 00015, Monterotondo, Rome, Italy.


| Marco Martinoli
ARPA Lazio, Agenzia Regionale per la Protezione Ambientale, Via Giuseppe Saredo, 52, 00173 Rome, Italy


| Riccardo Caprioli
Riserva Naturale Regionale Nazzano, Tevere-Farfa, S.P. Tiberina km 28,100, località Meana, 00060 Nazzano, Rome, Italy.


| Christian Angelici
Centro di ricerca “Zootecnia e Acquacoltura”, Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria (CREA), Via Salaria, 31, 00015, Monterotondo, Rome, Italy.


| Domitilla Pulcini
Centro di ricerca “Zootecnia e Acquacoltura”, Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria (CREA), Via Salaria, 31, 00015, Monterotondo, Rome, Italy.


| Fabrizio Capoccioni


نشانی اینترنتی http://ij-aquaticbiology.com/index.php/ijab/article/view/1006
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کد مقاله (doi) 10.22034/ijab.v0i0.1006
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