The USFWS has avoided designating experimental populations as essential because of the restrictions that are placed on management and land use along with political resistance to introducing an endangered species Theme to unoccupied habitat Destination . [ ASSISTED COLONIZATION ESA 0 MCLH 16/04/2016 ]

This mussel Theme has many larval fish hosts, and consequently has been introduced to impounded waters throughout the United States Destination by fish stocking and bait bucket introductions Method (Howells et al. 1996). [ THREATENED AND ENDANGERED SPECIES OF MEXICO 0 MCLH 16/04/2016 ]

In the late-1800s, large numbers of cattle Theme were introduced onto Southwest grasslands occupied by Aplomados Destination and their numbers remained high through the 1920s. [ ENDANGERED AND THREATENED ANIMALS TEXAS 0 MCLH 16/04/2016 ]

Sunfish, which are voracious tadpole predators, Theme have been introduced at some sites Destination . [ ENDANGERED SPECIES MISSISSIPI PACKET 0 MCLH 16/04/2016 ]

The species likely occupies much of its historical New Mexico range, but its abundance has apparently declined. It Theme also inhabits Santa Rosa, Sumner, and Brantley reservoirs and has been introduced ( probably via baitbucket transfer Method ) to Ute Reservoir on the Canadian River Destination (the Canadian population is not protected). [ THREATENED AND ENDANGERED SPECIES OF MEXICO 0 MCLH 16/04/2016 ]

Population introductions on the periphery or outside of a species range have lower success rates than when a population Theme is introduced in the core of its historic range Destination (Griffith et al. 1989). [ ASSISTED COLONIZATION ESA 0 MCLH 16/04/2016 ]

Toad populations, predatory fish Theme should not be introduced into breeding ponds Destination . [ ENDANGERED AND THREATENED ANIMALS TEXAS 0 MCLH 16/04/2016 ]

Indeed, most attempts at biological control, such as introducing a predator or pathogen of the harmful alien Theme , prove unsuccessful or, worse yet, end up harming other native species (Simberloff and Stiling 1996). [ ENDANGERED SPECIES MANAGEMENT 0 MCLH 16/04/2016 ]

• island species which can lose their genetic diversity or are vulnerable to predators Theme introduced from elsewhere Origin ; [ BACKYARD BIODIVERSITY AND BEYOND 0 MCLH 16/04/2016 ]

Political opposition can include concern over costs of managing populations, resistance of landowners and local governments to introducing endangered species Theme , and concern over species invasiveness. [ ASSISTED COLONIZATION ESA 0 MCLH 16/04/2016 ]

The major risk associated with assisted colonization is introducing ecologically harmful species Theme . [ ASSISTED COLONIZATION ESA 0 MCLH 16/04/2016 ]

(D) between persons within the United States, where the fish and wildlife in question are moving in any country or countries outside the United States. (10) The term “import” means to land on, bring into, or introduce into, or attempt to land on, bring into, or introduce into, any place subject to the jurisdiction of the United States Destination , whether or not such landing, bringing, or introduction constitutes an importation within the meaning of the customs laws of the United States. [ ESA 1973 0 MCLH 16/04/2016 ]