نتایج جستجو برای: vimba vimba persa
تعداد نتایج: 173 فیلتر نتایج به سال:
La sustentabilidad es un proceso que tiene por objetivo encontrar el equilibrio entre área económica, social y ambiental. El sector agrícola en México ha sufrido una serie de cambios durante años, estos se han visto reflejados directamente ambiente, ya la agricultura convencional impacta sobre los recursos naturales. investigación, realizó Municipio Martínez Torre, Veracruz, siendo este más imp...
The Caspian Sea basin is one of the most important ecosystems in Iran with a high diversity of different aquatic species, so that the issue of determining the taxonomy its fishes has always been considered. Up to now, a total of 297 species of freshwater and brackish fish have been reported from Iran where the subfamily Leuciscinae (minnows) has a high diversity of species in the Caspian Sea ba...
This study was conducted to determine the relationship between length and weight (LWR) of 15 Oxynoemacheilus species i.e. bergianus, O. brandtii, chomanicus, euphraticus, elsae, frenatus, karunensis, kiabii, kurdistanicus, longipinnis, parvinae, persa, marunensis, zagrosensis, zarzianus from Iranian inland waters. LWRs with high coefficients determination were calculated for all species. The va...
During the period from October to December 2001, Bucephalus polymorphus metacercariae were described in a new host, Knipowitshia caucasica from Lake Egirdir. A total of 614 fish were collected and the intensity of invasion varied from 10 to 120 parasites per fish. Prevalence of metacercariae of B.polymorphus was 100%, and encysted metacercariae of B.polymorhus were observed in the muscle of the...
The difficulty to detect invasive species depends of numerous factors, such as morphological similarities with local taxa (Dubey et al., 2014), low densities (Fitzpatrick et al., 2009), cryptic behaviours (Mazzotti et al., 2015), or remote distribution ranges (Lass et al., 2002). In some circumstances, alien taxa hybridize with local ones resulting in individuals with intermediate phenotypes. T...
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