Effects of Roost Shooting on Double-Crested Cormorant Use of Catfish Ponds Preliminary Results
نویسندگان
چکیده
منابع مشابه
Double-Crested Cormorant Distribution on Catfish Aquaculture in the Yazoo River Basin of Mississippi
Estimating the catfish aquaculture production losses that can be attributed to double-crested cormorants (Phalacrocorax auritus) has proved problematic because knowledge of the distribution of cormorants on catfish aquaculture is lacking. We evaluated use versus availability of various production pond types and landscape-scale factors affecting the distribution of cormorants on channel catfish ...
متن کاملDouble-crested Cormorant Movements in Relation to Aquaculture in Eastern Mississippi and Western Alabama
—Concomitant with increasing numbers of the Double-crested Cormorant ( Phalacrocorax auritus ), catfish producers in eastern Mississippi and western Alabama have reported damage caused by cormorant predation. VHF telemetry was used to document movements of 25 cormorants from all known night roosts in the aquaculture producing areas of eastern Mississippi and western Alabama, January-April 1998....
متن کاملInfluence of Simulated Double-crested Cormorant, Phalacrocorax auritus, Predation on Multiple-batch Production of Channel Catfish,Ictalurus punctatus
The double-crested cormorant, Phalacrocorax auritus, is considered the primary depredating bird species on commercially produced channel catfish, Ictalurus punctatus, in the southeastern USA. We simulated different levels of cormorant predation on losses at harvest and economic effects on channel catfish production in a multiple-batch cropping system. We observed significant (P< 0.05) declines ...
متن کاملeffects of first language on second language writing-a preliminary contrastive rhetoric study of farsi and english
to explore the idea the investingation proposed, aimed at finding whether the performances of the population of iranians students studying english in an efl context are consistent in l1 and l2 writing taks and whether there is a cross-linguistic transfer in this respect. in this regard the subjects were instructed to write four compositions-two in english and two in farsi-which consisted of an ...
15 صفحه اولIsotopic Discrimination in the Double-Crested Cormorant (Phalacrocorax auritus)
The diet-tissue discrimination factor is the amount by which a consumer's tissue varies isotopically from its diet, and is therefore a key element in models that use stable isotopes to estimate diet composition. In this study we measured discrimination factors in blood (whole blood, red blood cells and plasma), liver, muscle and feathers of Double-crested Cormorants (Phalacrocorax auritus) for ...
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ژورنال
عنوان ژورنال: Proceedings of the Vertebrate Pest Conference
سال: 2008
ISSN: 2641-273X
DOI: 10.5070/v423110397