Use of otoliths to estimate size at sexual maturity in fish

Agostinho, Carlos Sérgio

doi:10.1590/s1516-89132000000400014

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…The influence of sexual maturity on the formation of rings in fish otoliths was already reported (Eziuzo, 1963; Morales‐Nin, 1988; Agostinho, 2000), as well as its relationship with somatic growth that seems to be inversely correlated (Wootton, 1990; Thorpe, 1994). Nevertheless, other factors (physical and chemical characteristics of water, feeding habits, changes of habitat, etc.)…”

Section: Discussionmentioning

confidence: 78%

Age and growth of pearly razorfish, Xyrichtys novacula (Linnaeus 1758), in the central Mediterranean Sea

Battaglia

Castriota

Consoli

et al. 2010

Journal of Applied Ichthyology

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Age and growth of pearly razorfish Xyrichtys novacula (Labridae) were determined in specimens caught on sandy bottoms by surrounding nets and lines (depth range 5-30 m) between January 2000 and December 2002. The study location was in the central Mediterranean Sea. For this purpose the annual growth increments (annuli) in sagittae were analysed. A total of 470 individuals of X. novacula, ranging from 49 to 200 mm TL (total length), were examined. Conversion between total length and standard length was calculated and represented by the relationship: TL ¼ 1:136SL þ 1:748. Edge analysis on otoliths was carried out to validate seasonality deposition. Seven age-classes were determined from 0+ to 6+. The linear relationship between maximum otolith length (OL) and TL was summarized in the equation OL ¼ 0:0185TLþ 0:5771. The estimated parameters of the von Bertalanffy growth function were L ¥ = 175.05 mm, k = 0.80 year )1 , t 0 = )0.73 years and the growth performance index calculated as (F = 2.39). The length-weight relationship W = 0.0139 TL 2.9326 described an isometric growth for the species in this area.

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Section: Discussionmentioning

confidence: 78%

Age and growth of pearly razorfish, Xyrichtys novacula (Linnaeus 1758), in the central Mediterranean Sea

Battaglia

Castriota

Consoli

et al. 2010

Journal of Applied Ichthyology

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“…Usually, the input data for estimating

L_{50}

are based on the maturity stage of the gonads and for this two main techniques are used: visual inspections (morpho‐chromatic features) and histology (Rhodes et al ., 2016). Other sources of data less frequently used in research are morphometric relationships (Agostinho, 2000; Fontoura et al ., 2009) and the use of empirical equations (Compaire et al ., 2018; Hossain et al ., 2017).…”

Section: Introductionmentioning

confidence: 99%

Reproductive biology of the bullseye puffer Sphoeroides annulatus: Gonadosomatic index and its suitability for estimating length at maturity

Salas‐Singh

Morales‐Bojórquez²,

Aguirre‐Villaseñor³

2022

Journal of Fish Biology

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This study aimed to describe updated information on the basic reproductive biology of Sphoeroides annulatus females and potential use of the gonadosomatic index I G ð Þ as input data to assess length at 50% maturity (L 50 ) and identify the breeding season. FromApril 2014 to December 2015, 767 females were analysed along the north-west coast of the Mexican Pacific Ocean. Both immature and mature females were represented in the total length (L T ), which ranged from 81 to 440 mm, and the smallest mature female was 92 mm (new record for the species). Gonadal maturity phases were assigned through histological analysis. A I G threshold value I cut

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Identifying major events in two sturgeons’ life using pectoral fin spine ring structure: exploring the use of a non-destructive method

Bakhshalizadeh

Bani

Abdolmalaki

et al. 2017

Environ Sci Pollut Res

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Maturation is one of the most important life history traits that influences on many ecological characteristics of animals. This study aimed to describe the indirect distinguish of first reproduction and habitat shift (transition from the pelagic to benthic environment), using the width of translucent and annuluses of the pectoral fin spine of two sturgeon species, Persian sturgeon, Acipenser persicus, and starry sturgeon, Acipenser stellatus. Interpretation of growth bands in pectoral fin sections was done objectively using direct reading of thin sections and image analysis. The results showed that changes in the profiles of translucent and annuluses occurred at the time of habitat shift and first reproduction. Females of both sturgeons move to the deeper waters earlier than males, which can be considered as strategy for the prolonged gonad development of female individuals. Estimated age at maturity for A. persicus (9 years for female and 7 years for male) was higher than A. stellatus (7 years for female and 6 years for male), which coincide with abrupt reduction in annuli width. Marks of habitat shift and first reproduction in the pectoral fin spine are species-specific characters and enable life history traits to be identified.

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Use of otoliths to estimate size at sexual maturity in fish

Abstract: ABSTRACT

Cited by 5 publications

References 7 publications

Age and growth of pearly razorfish, Xyrichtys novacula (Linnaeus 1758), in the central Mediterranean Sea

Age and growth of pearly razorfish, Xyrichtys novacula (Linnaeus 1758), in the central Mediterranean Sea

Reproductive biology of the bullseye puffer Sphoeroides annulatus: Gonadosomatic index and its suitability for estimating length at maturity

Identifying major events in two sturgeons’ life using pectoral fin spine ring structure: exploring the use of a non-destructive method

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