Journal of Fish Biology
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Genetic diversity of invasive and native Cichla (Pisces: Perciformes) populations in Brazil with evidence of interspecific hybridization
Journal of Fish Biology - Tập 69 Số sb - Trang 260-277 - 2006
Invasive and native populations of the Amazonian fishes ‘peacock bass’Cichla
monoculus and of a not yet described species ‘blue tucunaré’ here referred as
Cichla sp. ‘Azul’ were analysed for genetic diversity using the hypervariable
domain of the mitochondrial DNA (mtDNA) control region plus steady diagnostic
random amplified polymorphic DNA loci. There is no detailed historical record of
the intr...
Colour pattern and inhibition of aggression in the cichlid fishAstronotus ocellatus
Journal of Fish Biology - Tập 47 Số 1 - Trang 50-58 - 1995
Current issues in fish welfare
Journal of Fish Biology - Tập 68 Số 2 - Trang 332-372 - 2006
Human beings may affect the welfare of fish through fisheries, aquaculture and a
number of other activities. There is no agreement on just how to weigh the
concern for welfare of fish against the human interests involved, but ethical
frameworks exist that suggest how this might be approached.Different definitions
of animal welfare focus on an animal's condition, on its subjective experience
of tha...
Identification and expression of the laboratory of genetics and physiology 2 gene in common carp Cyprinus carpio
Journal of Fish Biology - Tập 86 Số 1 - Trang 74-91 - 2015
In this study, a laboratory of genetics and physiology 2 gene (lgp2) from common
carp Cyprinus carpio was isolated and characterized. The full‐length
complementary (c)DNA of lgp2 was 3061 bp and encoded a polypeptide of 680 amino
acids, with an estimated molecular mass of 77 341·2 Da and a predicted
isoelectric point of 6·53. The predicted protein included four main overlapping
structural domains:...
Phylogenetic relationships among the mollies (Poeciliidae: Poecilia: Mollienesia group) based on mitochondrial DNA sequences
Journal of Fish Biology - Tập 53 Số sA - Trang 64-81 - 1998
A 505‐bp sequence from the control region (D‐loop) and the complete 1047 bp of
the NADH dehydrogenase subunit 2 (ND2) gene were examined for individuals from
11 species of mollies included in the group Mollienesia. All three species of
sailfin mollies of the Poecilia latipinna species complex were included (P.
latipinna, P. petenensis and P. velifera); this group is named after the
strikingly larg...
Cold shocks: a stressor for common carp
Journal of Fish Biology - Tập 57 Số 4 - Trang 881-894 - 2000
The stress response of common carp Cyprinus carpio was studied by evaluating
plasma cortisol, glucose and lactate after single or multiple rapid temperature
drops (ΔT: 7, 9 or 11° C). All three amplitudes used induced a significant rise
in plasma cortisol levels. Peaks occurred within 20 min after onset of the cold
shock. No stress‐related secondary metabolic changes were observed in any of the
ex...
Seasonal changes in the hypo‐osmoregulatory ability of brook charr: the role of environmental factors
Journal of Fish Biology - Tập 56 Số 2 - Trang 347-373 - 2000
In winter, brook charr Salvelinus fontinalis demonstrated poor osmoregulatory
ability. Saltwater (SW) transfer resulted in sharp increases in plasma
osmolality and chloride levels, a decrease in white muscle water content and
high mortality. A clear improvement of the hypo‐osmoregulatory mechanism
e.ciency was observed in spring; by May or June, fish achieved full acclimation
within 1 week of SW t...
Plasma ionic regulation and gill Na+/K+‐ATPase changes during rapid transfer to sea water of yearling rainbow trout, Salmo gairdneri: time course and seasonal variation
Journal of Fish Biology - Tập 34 Số 6 - Trang 829-840 - 1989
Danish rainbow trout, Salmo gairdneri Richardson, (40–65 g) were transferred to
28%o sea water at intervals throughout the early spring and summer. Gill
Na+/K+‐ATPase of fish kept in fresh water surged distinctly during May.
Simultaneously, a body silvering occurred and plasma concentrations of Cl−, Na+
and total thyroxine (T4) decreased. The seawater transfer‐induced adaptive
response in plasma e...
Cortisol and glucose responses after acute stress by net handling in the sparid red porgy previously subjected to crowding stress
Journal of Fish Biology - Tập 51 Số 1 - Trang 21-28 - 1997
In red porgy Pagrus pagrus subjected to 3 weeks of chronic stress by crowding,
plasma cortisol remained significantly higher in crowded fish compared to
controls. There was no significant effect of crowding on plasma glucose levels.
When the crowded fish were subjected to an acute handling the plasma cortisol
response was similar to that of the uncrowded fish. No significant differences
were found...
Development of a microtitre plate indirect ELISA for measuring cortisol in teleosts, and evaluation of stress responses in rainbow trout and gilthead sea bream
Journal of Fish Biology - Tập 68 Số 1 - Trang 251-263 - 2006
A microtitre plate indirect enzyme‐linked immunoassay (ELISA) was developed for
measuring plasma cortisol levels in rainbow trout Oncorhynchus mykiss, gilthead
sea bream Sparus auratus sea bass Dicentrarchus labrax and Senegalese sole Solea
senegalensis. Covalink microplates pretreated with disuccinimidyl suberate were
coated with bovine serum albumin (BSA) conjugated to cortisol‐3‐carboxymethyl
o...
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