The northern pike (Esox lucius L.), an important predatory freshwater species, is undergoing significant population decline. In this study, 18 novel polymorphic microsatellite loci were isolated and used for assessing genetic variation in the Chinese Ulungur and Hungarian Balaton populations of the species. The number of alleles ranged from 2 to 13, observed heterozygosity from 0.154 to 0.920 a...

Studies carried out with the common wall lizard (Podarcis muralis) revealed preferential use of the left eye during responses to predatory threat in laboratory settings and in the wild. Here we tested lizards under monocular conditions of vision, using temporary eye-patching. Lizards were facing a (simulated) predatory threat laterally, from the side of the non-patched eye. Results showed that ...

Predatory release has long been considered a potential contributor to population outbreaks of crown-of-thorns starfish (CoTS; Acanthaster spp.). This has initiated extensive searches for potentially important predators that can consume large numbers of CoTS at high rates, which are also vulnerable to over-fishing or reef degradation. Herein, we review reported predators of CoTS and assess the p...

Predation can promote divergence between prey populations and contribute to ecological speciation. In theory, predators can also constrain prey population divergence. In coastal British Columbia, Canada, Gasterosteus aculeatus (three-spined stickleback) species pairs only occur in lakes with a single species of predatory fish: Oncorhynchus clarkii (the cutthroat trout). Similar lakes containing...

Dear Editor, T letter addresses the current scenario of predatory publishers in the medical field and strategies to curb young researchers from predatory publishing. Today, the increasing trend and magnitude of predatory publishers have proposed a big challenge to young researchers in the medical field (1). Predatory publishers are publishers which publish papers with questionable peer review, ...

background: the widespread use of chemical insecticides, resistance in vectors and environmental problems, all have led to an increased interest in the use of biological agents in malaria control programs. the most important functional elements are the native fish. the aim of this study was to identify the native species of lavivorous fish in rudan county, southern iran, to introduce an effecti...

The entry of alien predatory fish in Indonesian waters has a negative impact on local ecosystems Indonesia, foreign can spread disease, become main predators and cause imbalance the food chain. From this study, we report presence type Cichlasoma urophthalmus (Günther 1862) or Mayan Cichlid from tropical North America caught Kedung Ombo Reservoir, Grobokan Regency, Central Java. species identifi...

Establishing connectivity via fish movements among restored estuaries is important for maintaining community structure, but data on the degree to which animals efficiently move among estuaries are limited. To test estuarine connectivity potential, we translocated 5 species of juvenile predatory fishes between 2 discrete estuaries approximately 10 km apart, and using passive acoustic telemetry, ...

Piscine venom glands have implicitly been assumed to be anti-predatory adaptations, but direct examinations of the potential fitness benefits provided by these structures are relatively sparse. In previous experiments examining this question, alternative phenotypes have not been presented to ecologically relevant predators, and the results are thus potentially confounded by the presence of shar...

in iran, cheyletid mites (acariformes: cheyletidae) were collected over 15 years (1996–2010) in stored cereal. samples were collected from silos, flour-mills, barn and rice-mills in 12 provinces scattered throughout the north,  centre, east and west of iran. 8 genera and 13 species were recorded: acaropsellina sollers (kuzin, 1940), cheletomorpha lepidopterorum (show, 1794), cheyletus bidentatu...