Ultrasonography, a non-invasive method for sex determination in cod (Gadus morhua)

1994 ◽  
Vol 44 (6) ◽  
pp. 965-971 ◽  
Author(s):  
O Karlsen
Keyword(s):  
Sex Determination ◽  
Gadus Morhua ◽  
Non Invasive ◽  
Invasive Method

scholarly journals Sex determination in gibbons of genus Nomascus using non-invasive method

2016 ◽  
Vol 85 (4) ◽  
pp. 363-366 ◽  
Author(s):  
Petra Bolechová ◽  
Kateřina Ječmínková ◽  
Michal Hradec ◽  
Tomáš Kott ◽  
Jana Doležalová
Keyword(s):  
Sex Determination ◽  
Direct Examination ◽  
Chain Reactions ◽  
Polymerase Chain Reactions ◽  
Non Invasive ◽  
Faecal Samples ◽  
Invasive Method ◽  
Polymerase Chain ◽  
Template Dna

Gibbons of the genus Nomascus have a strong sexual dimorphism and dichromatism. As they mature, both sexes develop sex-specific pelage colour. In combination with physical similarities in the genitalia with both sexes, there are problems with determining the sex of young individuals compared to other genus of gibbons. This is a pilot study applying a multiplex polymerase chain reactions based on a non-invasive method for sex determination of gibbons. The study was conducted on 22 faecal samples from gibbons of the genus Nomascus. The animals were monitored by staff so that the samples were identified correctly and each sample was collected immediately after the defecation. Results confirmed the sex in all adult and juvenile animals with known sex; and 2 females and 5 males in juveniles were determined with unknown sex. The results of direct examination completely corresponded with the PCR results. The PCR reaction with template DNA isolated from faecal material required BSA usage, however, we observed the occurrence of nonspecific fragments. This did not affect the reliability of our results and we confirmed the usability of this method for this genus.

scholarly journals Comparative Evaluation Of Two Techniques Of Sex Determination In Lovebirds (Agapornis Spp.)

2020 ◽  
Vol 77 (2) ◽  
pp. 106
Author(s):  
Maria Carmen TURCU ◽  
Lucia Victoria BEL ◽  
Tommaso COLLARILE ◽  
Dana Liana PUSTA
Keyword(s):  
Sex Determination ◽  
Comparative Evaluation ◽  
Surgical Instruments ◽  
Dna Testing ◽  
Blood Samples ◽  
Non Invasive ◽  
Dna Sampling ◽  
Invasive Method ◽  
Pcr Method ◽  
Materials Used

Most lovebirds (Agapornis spp.) have no distinct sexual dimorphic traits. The objective of the paper was to compare the results of two sexing methods, surgical sexing by celioscopy and DNA sexing by PCR from blood samples, in order to evaluate their effectiveness. Materials used to carry out the studies were a 2.7 mm telescope and endoscopy unit, surgical instruments and DNA sampling kits provided by Exomed.cz laboratory. Forty-two lovebirds were included in this study. The endoscopic sexing procedure was performed by the method described by Divers. Blood sampling for DNA testing by PCR method was performed from the metatarsal vein. The results were different in the case of one lovebird, endoscopic sexing revealed it as male, compared to DNA testing, where it was identified as female. DNA sexing is a non-invasive method that might be more accurate than celioscopy in this species, and bird owners have easier access to it.

A reliable, non-invasive method for sex determination in the endangered San Joaquin kit fox (Vulpes macrotis mutica) and other canids

2004 ◽  
Vol 5 (5) ◽  
pp. 715-718 ◽  
Author(s):  
Jorge Ortega ◽  
Mar�a Del Rosario Franco ◽  
Brice A. Adams ◽  
Katherine Ralls ◽  
Jesus E. Maldonado
Keyword(s):  
Sex Determination ◽  
Non Invasive ◽  
Kit Fox ◽  
San Joaquin Kit Fox ◽  
Vulpes Macrotis ◽  
Invasive Method ◽  
Vulpes Macrotis Mutica

A reliable, non-invasive method for sex determination in the endangered San Joaquin kit fox (Vulpes macrotis mutica) and other canids

2004 ◽  
Vol 5 (5) ◽  
pp. 715-718 ◽  
Author(s):  
Jorge Ortega ◽  
María Del Rosario Franco ◽  
Brice A. Adams ◽  
Katherine Ralls ◽  
Jesus E. Maldonado
Keyword(s):  
Sex Determination ◽  
Non Invasive ◽  
Kit Fox ◽  
San Joaquin Kit Fox ◽  
Vulpes Macrotis ◽  
Invasive Method ◽  
Vulpes Macrotis Mutica

Malfunctional Reorganization in the Developing Limbo-Prefrontal System in Animals: Implications for Human Psychoses?

2001 ◽  
Vol 12 (1) ◽  
pp. 8-14
Author(s):  
Gertraud Teuchert-Noodt ◽  
Ralf R. Dawirs
Keyword(s):  
Prefrontal Cortex ◽  
Mental Disorders ◽  
Dentate Gyrus ◽  
Cognitive Functions ◽  
Experimental Approach ◽  
Regulatory Mechanisms ◽  
Hippocampal Dentate Gyrus ◽  
Non Invasive ◽  
Invasive Method ◽  
Activity Dependent

Abstract: Neuroplasticity research in connection with mental disorders has recently bridged the gap between basic neurobiology and applied neuropsychology. A non-invasive method in the gerbil (Meriones unguiculus) - the restricted versus enriched breading and the systemically applied single methamphetamine dose - offers an experimental approach to investigate psychoses. Acts of intervening affirm an activity dependent malfunctional reorganization in the prefrontal cortex and in the hippocampal dentate gyrus and reveal the dopamine position as being critical for the disruption of interactions between the areas concerned. From the extent of plasticity effects the probability and risk of psycho-cognitive development may be derived. Advance may be expected from insights into regulatory mechanisms of neurogenesis in the hippocampal dentate gyrus which is obviously to meet the necessary requirements to promote psycho-cognitive functions/malfunctions via the limbo-prefrontal circuit.

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