نتایج جستجو برای: captive rearing

تعداد نتایج: 17512  

Journal: :Canadian Journal of Fisheries and Aquatic Sciences 2021

Captive breeding programs are widely applied by conservation practitioners as a means of conserving, reintroducing, and supplementing populations imperilled freshwater fishes mussels. We conducted systematic map to provide an overview the existing literature on effectiveness captive release programs. A key finding is that there limited evaluation such at all three stages (i.e., broodstock colle...

Journal: :Journal of the South African Veterinary Association 2002
D E Kenny W E Braselton R A Taylor T Morgan R B Hesky

A 38-day-old male warthog (Phacochoerus aethiopicus) with marked anaemia (haematocrit = 14 %) presented to the Denver Zoological Gardens hospital with ataxia, tachypnoea, suspected stunted growth and cardiomegaly. The piglet demonstrated some features consistent with both iron deficiency anaemia and autoimmune haemolytic anaemia. Serum-soluble iron was below the level of detection (< 8.96 micro...

2010
Michael M Bailey Kevin A Lachapelle Michael T Kinnison

Captive rearing often alters the phenotypes of organisms that are destined for release into the wild. Natural selection on these unnatural phenotypes could have important consequences for the utility of captive rearing as a restoration approach. We show that normal hatchery practices significantly advance the development of endangered Atlantic salmon (Salmo salar) fry by 30+ days. As a result, ...

Journal: :ILAR journal 2007
Robert K Browne Kevin Zippel

Reproduction technologies for amphibians are increasingly used for the in vitro treatment of ovulation, spermiation, oocytes, eggs, sperm, and larvae. Recent advances in these reproduction technologies have been driven by (1) difficulties with achieving reliable reproduction of threatened species in captive breeding programs, (2) the need for the efficient reproduction of laboratory model speci...

Journal: :iranian journal of ichthyology 0
arya vazirzadeh department of natural resources and environment (division of fisheries), college of agriculture, shiraz university, shiraz, 71441-65186, iran. somayyeh zahedinejad el nino ornamental fish hatchery, shiraz, iran. amirhoushang bahri department of fisheries, islamic azad university, bandar abbas branch, bandar abbas, iran.

the stimulatory effect of ovaprim, a commercial spawning inducing agent consisting of salmon gonadotropin releasing analogue (gnrha) and a dopamine d2- receptor antagonist, domperidone, was studied in doctor fish, garra rufa (heckel, 1843) under hatchery conditions. the feeding and rearing condition effects on the survival rate of naturally produced larvae were also evaluated. twenty-five fish ...

2016
Sarah L. Jacobson Stephen R. Ross Mollie A. Bloomsmith

Abnormal behaviors in captive animals are generally defined as behaviors that are atypical for the species and are often considered to be indicators of poor welfare. Although some abnormal behaviors have been empirically linked to conditions related to elevated stress and compromised welfare in primates, others have little or no evidence on which to base such a relationship. The objective of th...

2016
Yumi Yamanashi Migaku Teramoto Naruki Morimura Satoshi Hirata Miho Inoue-Murayama Gen'ichi Idani

Understanding the factors associated with the long-term stress levels of captive animals is important from the view of animal welfare. In this study, we investigated the effects of relocation in addition to individual and environmental factors related to social management on long-term stress level in group-living captive chimpanzees by examining behaviors and hair cortisol (HC). Specifically, w...

2016
Paola F. Lahuatte M. P. Lincango G. E. Heimpel C. E. Causton

Captive rearing of insect pests is necessary to understand their biology and to develop control methods. The avian nest fly, Philornis downsi Dodge and Aitken, is a blood-sucking parasite during its larval stage and a serious threat to endemic birds in the Galapagos Islands where it is considered invasive. In order to procure large numbers of flies for biological studies, rearing media and diet...

2009
Sara E. Williams Eric A. Hoffman

0006-3207/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.biocon.2009.05.034 * Corresponding author. Tel.: +1 407 823 4007; fax E-mail addresses: [email protected] mail.ucf.edu (E.A. Hoffman). Captive breeding for species of conservation concern is the act of bringing rare or endangered animals into captivity with the hope of rearing sustained captive populations for eventual ...

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