Advertisement

Topics

Survival of Whirling-Disease-Resistant Rainbow Trout Fry in the Wild: A Comparison of Two Strains.

08:00 EDT 29th August 2018 | BioPortfolio

Summary of "Survival of Whirling-Disease-Resistant Rainbow Trout Fry in the Wild: A Comparison of Two Strains."

Introduced pathogens can affect fish populations, and three main factors affect disease occurrence: the environment, host, and pathogen. Manipulating at least one of these factors is necessary for controlling disease. Myxobolus cerebralis, the parasite responsible for salmonid whirling disease, became established in Colorado during the 1990s and caused significant declines in wild Rainbow Trout Oncorhynchus mykiss populations. Attempts to re-establish Rainbow Trout have focused on manipulating salmonid host resistance. A Rainbow Trout strain known as GR × CRR was developed for stocking in Colorado by crossing a whirling-disease-resistant strain known as the German Rainbow Trout (GR) with the Colorado River Rainbow Trout (CRR). The GR × CRR fish exhibit resistance similar to that shown by GR, and survival and reproduction were expected to be similar to those of CRR. One disadvantage of stocking GR × CRR is that outcrossing and backcrossing could decrease resistance, and laboratory studies have indicated that this can occur. A potential disadvantage of stocking pure GR is lower survival due to domestication. To compare fry survival between the strains, a field experiment was conducted in 1.6-km reaches of nine Colorado streams. Each stream was stocked in August 2014 with 5,000 GR × CRR and 5,000 GR individuals. In October 2014, April 2015, and August 2015, apparent survival was assessed. Two laboratory predation experiments were also conducted. The field experiment revealed that short-term apparent survival was influenced by stream, and growth rate was influenced by strain and stream. However, after 12 months, there was no difference in apparent survival or growth rate between the GR and GR × CRR strains. Laboratory experiments showed that survival did not differ between the strains when confronted with Brown Trout Salmo trutta predation. Our results indicate that the GR strain is a viable option for stocking in streams where M. cerebralis is enzootic. Further evaluation is needed to determine whether GR fish will survive to maturity and reproduce.

Affiliation

Journal Details

This article was published in the following journal.

Name: Journal of aquatic animal health
ISSN: 1548-8667
Pages:

Links

DeepDyve research library

PubMed Articles [25538 Associated PubMed Articles listed on BioPortfolio]

Transcriptomic responses to heat stress in rainbow trout Oncorhynchus mykiss head kidney.

Rainbow trout (Oncorhynchus mykiss) are widely cultured throughout the word for commercial aquaculture. However, as a cold-water species, rainbow trout are highly susceptible to heat stress, which may...

Exploring the immune response, tolerance and resistance in proliferative kidney disease of salmonids.

Proliferative kidney disease (PKD) of salmonids is a disease of economic and environmental concern caused by the myxozoan parasite Tetracapsuloides bryosalmonae. Finer details of the immune repertoire...

Detection of piscine orthoreoviruses (PRV-1 and PRV-3) in Atlantic salmon and rainbow trout farmed in Germany.

Piscine orthoreoviruses (PRVs) are emerging pathogens causing circulatory disorders in salmonids. PRV-1 is the etiological cause of heart and skeletal muscle inflammation (HSMI) in farmed Atlantic sal...

Intestinal Microbiota Lipid Metabolism Varies across Rainbow Trout (Oncorhynchus mykiss) Phylogeographic Divide.

This study focused on intestinal microbiome variation across the phylogeogrpahic divide of rainbow trout and its potential functional effects on ocean migration.

Adjuvant efficacy of G2 (buffalo spleen extraction) against Yersinia septicemia in rainbow trout (Onchorhynchus mykiss).

Adjuvant effect of G2 (extraction of buffalo spleen) was assessed in intraperitoneally immunized rainbow trout (100-150 g) with killed- Y. ruckeri bacterin biotype I [0.1 mL (1 × 10 cells/f...

Clinical Trials [10410 Associated Clinical Trials listed on BioPortfolio]

The Effects of Trout Fed With a Vegetable Based Feed on Cardiovascular Risk Markers and Plasma Proteome

Fish from the aquaculture sector constitutes an increasing part of the fish consumption in Denmark. The most important farmed fish in Denmark is the rainbow trout. Due to limited access of...

Acute Single Meal Effects of Trout on Cardiovascular Risk Markers and Plasma Proteome

The acute effects of farmed rainbow trout, fed by various feeds versus a control meal with poultry meat on cardiovascular risk markers and plasma protein expression are investigated. The ...

Panitumumab and Pegylated Liposomal Doxorubicin for Platinum-Resistant Epithelial Ovarian Cancer With Kirsten Rat Sarcoma Viral Oncogene Homolog (KRAS) Wild-type

The purpose of this study is to investigate the response rate in platinum-resistant, KRAS wild-type, ovarian cancer patients who are treated with pegylated liposomal doxorubicin (Caelyx®)...

S1 vs.Pemetrexed Plus Carboplatin in Patients With EGFR Wild Type Stage IIIB or IV Nonsquamous NSCLC

This study compared the efficacy and safety of S1 plus carboplatin (C) followed by S1 with pemetrexed plus carboplatin (C) followed by pemetrexed in patients with epidermal growth factor r...

Study Evaluating the Safety and Efficacy of FOLFIRI Plus Cetuximab (Erbitux) or FOLFOX Plus Cetuximab as First-line Therapy in Subjects With KRAS Wild-type Metastatic Colorectal Cancer (APEC-Study)

This is an open-label, non-randomized, multicenter phase II study evaluating FOLFIRI plus cetuximab or FOLFOX plus cetuximab as first-line therapy of patients with KRAS wild-type metastati...

Medical and Biotech [MESH] Definitions

A species of gram-negative bacteria responsible for red mouth disease in rainbow trout (ONCORHYNCHUS MYKISS). The bacteria is a natural component of fresh water ecosystems in the United States and Canada.

A species of gram-negative bacteria responsible for red mouth disease in rainbow trout (ONCORHYNCHUS MYKISS). The bacteria is a natural component of fresh water ecosystems in the United States and Canada.

Comparison of various psychological, sociological, or cultural factors in order to assess the similarities or diversities occurring in two or more different cultures or societies.

A large stout-bodied, sometimes anadromous, TROUT found in still and flowing waters of the Pacific coast from southern California to Alaska. It has a greenish back, a whitish belly, and pink, red, or lavender stripes on the sides, with usually a sprinkling of black dots. It is highly regarded as a sport and food fish. Its former name was Salmo gairdneri. The sea-run rainbow trouts are often called steelheads. Redband trouts refer to interior populations of rainbows.

One of several acid phosphatases in humans, other mammals, plants, and a few prokaryotes. The protein fold of tartrate-resistant acid phosphatase (TRAP) resembles that of the catalytic domain of plant purple acid phosphatase and other serine/threonine-protein phosphatases that also contain a metallophosphoesterase domain. One gene produces the various forms which include purple acid phosphatases from spleen and other tissues. Tartrate-resistant acid phosphatase is a biomarker for pathological states in which it is over-expressed. Such conditions include GAUCHER DISEASE; HODGKIN DISEASE; BONE RESORPTION; and NEOPLASM METASTASIS.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article