Assessment of sex and evaluation of ovarian maturation of fish using ultrasonography

Martin-Robichaud, D. J.; Rommens, Mellisa

doi:10.1046/j.1365-2109.2001.00538.x

Cited by 59 publications

(39 citation statements)

References 15 publications

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“…In contrast, if fish 131191 was male, the same energetic constraints may not limit spawning activity, such that higher frequency rises indicate spawning at will. This hypothesis can be tested in subsequent tagging missions using ultrasonic methods for determining sex developed for Atlantic halibut [43] and applied to Pacific halibut [44]. Potential sex differences may also be examined from these and subsequently tagged fish using fin-clip samples exposed to new genetic approaches [45].…”

Section: Discussionmentioning

confidence: 99%

Pop-up satellite archival tag (PSAT) temporal data resolution affects interpretations of spawning behaviour of a commercially important teleost

et al. 2017

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Background:The effects of temporal data resolution on the interpretation of fish behaviours are questions fundamental to research programs using electronic tags with finite data storage and data transmission capacities. However, understanding these effects requires sub-sampling high-resolution data at multiple temporal resolutions. In pop-up satellite archival tags (PSATs), data transmissions via satellite are limited, so temporal resolution is a decreasing function of the deployment duration. Physical recovery of PSATs overcomes this limitation, providing data on temperature, depth, etc., at rates at least 15-30 times greater than transmitted data.Results: Using PSATs physically recovered from Atlantic halibut (Hippoglossus hippoglossus), we evaluated the effects of data resolution (2, 30, 60 min) on interpreting vertical movements including rapid ascents during the expected spawning season. Putative 'spawning rises' of 6-20 min were only present within highest temporal resolution data. Vertical movement rates during spawning rises identified with high-resolution data exceeded rates in all other periods; such movement rates were virtually absent in all other tagged fish within the spawning period. Mean maximum ascent rates were 13 and 23 times higher when the sampling interval was 2 versus 30 or 60 min, respectively. Conclusions:We illustrate the limitations of using satellite-transmitted data to quantify vertical movement rates and detect potential spawning events in marine teleosts. Such low temporal resolution data suggest spurious results by masking important behaviours that archived data reveal as occurring at high frequencies. We highlight new technologies that facilitate PSAT recoveries at sea to overcome these limitations and facilitate analyses of high-frequency archived data.

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Section: Discussionmentioning

confidence: 99%

Pop-up satellite archival tag (PSAT) temporal data resolution affects interpretations of spawning behaviour of a commercially important teleost

et al. 2017

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“…Fish should be anaesthetized and initial length and body weight recorded and milt expressed to verify sex and gauge sexual readiness. Ultrasound has also been proven to be a useful non-lethal tool to determine sex and ripeness (Martin-Robichaud and Rommens, 2001). A few days after transfer to spawning tanks, fish should be free of symptoms of fright or stress (such as dark skin blotches) or immobility (Billard et al, 1981).…”

Section: Broodstock Collection and Husbandrymentioning

confidence: 99%

Estimation of Male Reproductive Success of Marine Fisheries

Trippel¹

2003

J. Northw. Atl. Fish. Sci.

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The subject of reproductive potential of fish populations is dominated by studies on the female gender. Studies on male reproduction are relatively few, but have increased in number during the previous decade. The objectives of this contribution were to describe and quantify the reproductive traits that make up the viable sperm production of a population. Some of these reproductive traits were easily measured from wild fish (e.g., mature testes weight), and others were more easily measured on captive fish (e.g., fertilization potential and sperm motility). Results of laboratory and field studies were then integrated to generate estimates of viable sperm production of a fish stock. A number of experimental protocols have been employed over the years to assess male fertility. The strengths and weaknesses of the different experimental approaches were reviewed and appropriate recommendations given towards establishing standardized protocols. Although the review is broad in nature, and includes references to a number of marine fishes, it concentrated on exploited species that occur in the North Atlantic and Baltic Sea within the taxonomic groups gadoidae, pleuronectoidae and clupeidae (Clupeiformes). In addition, published data on male reproductive traits of species in these taxa were tabulated and summarized. The terms of interest included sex ratio, maturity state, testes weight, sperm fertilization potential (artificial fertilization and paired mating), sperm density, sperm motility and paternal effects on early life history traits.An equation for determinate spawners was described that quantifies a population's viable sperm production using data on adult body characteristics and associated quantity and quality of sperm. The equation was used to establish time series of viable sperm production for Atlantic cod (Gadus morhua) of Newfoundland and Labrador. Results indicated on average 1 600 billion viable sperm were released to produce one recruit at age 3 years but with substantial variation among years in relation to changes in stock composition and growth as well as stock size. Distinct peaks in the number of viable sperm in 1981 and 1986 corresponded to distinct peaks in the number of age 3 recruits in those same years.

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“…Previous studies using the ultrasound imaging methodology in fish have focused on reproduction for sex determination (CREPALDI and ROTTA, 2007;MARTIN-ROBICHAUD and ROMMENS, 2001 carcass evaluation using ultrasonography has also been performed. CREPALDI et al (2008) found high correlations between US images and yield traits, such as carcass, head, shank fillet and belly fillet in surubins (Pseudoplatystoma spp.).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of ultrasound imaging to predict loin eye area in tambaqui

et al. 2015

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Tambaqui is the major native Characiform fish species in Brazil. The loin-eye area (LEA) is a feature currently used in breeding programs for livestock and may be a phenotype susceptible to selection also in tambaquis. The purpose of this study was to evaluate the efficiency of two different LEA measurements. LEA data were taken using the vegetable paper (VP) and ultrasonography (US) techniques measured in three LEA regions (LEA1) at the end of the operculum region, (LEA2) at the insertion of the dorsal fin, and (LEA3) in the region of insertion of the anal fin from 29 individuals in a fish processing plant located in the State of Rondônia, Brazil. The data were analyzed in the R program using both the Student's t-test and the Pearson correlation. The mean values for the two methods were not statistically different at the 5% risk level, indicating that the US can efficiently estimate the LEA compared with the actual value given by VP. The correlation was moderate (0.61) for LEA2 and can be attributed to the loin cut into two halves lengthwise in tambaquis usually done during commercial fish processing. Ultrasound has proven to be an efficient method for accurately estimating the LEA in tambaqui for further genetic breeding programs. Keywords RESUMOTambaqui é a maior espécie de peixe da ordem Characiformes no Brasil. A área de olho de lombo (AOL) é uma característica usada atualmente em programas de melhoramento genético em animais de criação terrestre. O objetivo deste estudo foi avaliar a eficiência de dois tipos diferentes de medidas de AOL. As medidas de AOL foram tomadas com o uso de papel vegetal (PV) e ultrassonografia (US) em três regiões do animal: (AOL1) região final da região do opérculo, (AOL2) na inserção da nadadeira dorsal e (AOL3) na região da inserção da nadadeira caudal em 29 indivíduos advindos de uma planta processadora localizada no estado de Rondônia, Brasil. Os dados foram analisados no programa R com o uso do test t de Student e a correlação de Pearson. Os valores médios para ambas metodologias não foram estatisticamente diferentes ao nível de 5%, indicando que US pode eficientemente estimar a AOL quando comparado com o valor real gerado por PV. A correlação foi moderada (0,61) para AOL2 e isto pode ser atribuído ao corte em duas metades do lombo geralmente realizado em tambaquis nas plantas de processamento. A técnica de ultrassom provou ser um método eficiente para estimar acuradamente a AOL em tambaqui em futuros programas de melhoramento genético.

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Assessment of sex and evaluation of ovarian maturation of fish using ultrasonography

Cited by 59 publications

References 15 publications

Pop-up satellite archival tag (PSAT) temporal data resolution affects interpretations of spawning behaviour of a commercially important teleost

Pop-up satellite archival tag (PSAT) temporal data resolution affects interpretations of spawning behaviour of a commercially important teleost

Estimation of Male Reproductive Success of Marine Fisheries

Evaluation of ultrasound imaging to predict loin eye area in tambaqui

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