A review of length-weight relationships of fish from the Segura River basin (SE Iberian Peninsula)

Andreu-Soler, Asunción; Paterna, Francisco José Oliva; Torralva, Mar

doi:10.1111/j.1439-0426.2006.00719.x

Cited by 36 publications

(21 citation statements)

References 8 publications

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“…A b value close to 3 shows that the fish grow isometrically and other values show allometric growth (Andreu-Soler et al, 2005). Most of the estimates for b values obtained in the present work show a similar trend with those of Sani et al (2010) in tributaries of the Yamuna and Ganga, by Sarkar et al (2009) in Ganga basin, Pet et al (1996) in Sri Lankan reservoirs, Ahmed and Saha (1996) in Kapati Lake, Bangladesh, and by Sivakami (1987) and Ramakrishniah (1988) in the Nagarjunasagar reservoirs.…”

Section: Discussionsupporting

confidence: 78%

Length-weight relationships (LWRs) of 12 Indian freshwater fish species from an un-impacted tropical river of Central India (River Ken)

Dubey

Sarkar

Kumar

et al. 2012

Journal of Applied Ichthyology

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Summary The length–weight relationships (LWRs) were studied of 441 fish individuals covering six families, eight genera and 12 freshwater species (L. dyochilus, L. calbasu, L. gonius, L. fimbriatus, P. sarana, L. boggut, C. mrigala, W. attu, B. bagarius, E. vacha, N. notopterus and S. aor) captured in the River Ken (tributary of the Yamuna River) from December 2007 to January 2009. The b value ranged from 3.52 for Cirrihinus mrigala, to 2.11 for Labeo gonius, with a mean of 3.03 at p < 0.001 for all species. The present observations are significant for conservation and management because the Ken River has been approved under India’s first interlinking plan with the River Betwa. The objective was to evaluate the LWRs of the freshwater fish species of an unimpacted and understudied river, which serves as a baseline for comparison to other relatively altered tropical Indian rivers.

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Section: Discussionsupporting

confidence: 78%

Length-weight relationships (LWRs) of 12 Indian freshwater fish species from an un-impacted tropical river of Central India (River Ken)

Dubey

Sarkar

Kumar

et al. 2012

Journal of Applied Ichthyology

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“…The same for WLR slopes ( b ) in species all falling within expected ranges (2.5 < b < 3.5; Carlander, 1969). The b parameter usually does not vary significantly throughout the year (Bagenal and Tesch, 1978), and together with a can be considered mean annual values, as suggested by several authors (Gonçalves et al., 1997; Santos et al., 2002; Borges et al., 2003; Andreu‐Soler et al., 2006).…”

Section: Resultsmentioning

confidence: 99%

Weight-length relationships for 27 demersal fish species caught off the Cape Verde archipelago (eastern North Atlantic)

Pereira

Simas

Rosa

et al. 2011

Journal of Applied Ichthyology

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Weight-length relationships were estimated for 27 demersal fish species of the Cape Verde archipelago. Samples were collected in October and November 2000 using longline gear in depths up to 600 m, and occasionally to 1200 m. The b values were within expected ranges, varying between 2.406 and 3.761, except for Syacium micrurum (1.574) and Paraconger notialis (4.476), which presented strong allometries instigated through further analysis. This work revises previous literature in the archipelago and provides the first reference on weight-length parameters for 10 fish species worldwide and for 21 species of the Cape Verde archipelago.

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“…These results corroborate that a single regression will not adequately describe the lengthweight relationship of a species. It must be considered that growth rate is not constant and may change either continuously or abruptly during the fish lifetime (Katsanevakis et al, 2007) due to genetics, ontogenetic shifts in diet, differences in seasons, sexes, gonad development or number of specimens examined (Andreu-Soler, Oliva-Paterna, & Torralva, 2006). Therefore, the identification of growth stanzas in L-W relationships is imperative not only to obtain a better knowledge of the growth process in reef fishes, but to establish an accurate growth rate used to calculate some target reference points such as maximum sustainable yield or yield-per-recruit used in fisheries management.…”

Section: Discussionmentioning

confidence: 99%

Growth stanzas in an Epinephelidae-Lutjanidae complex: considerations to length-weight relationships

Renán

Trejo-Martinez

Caballero-Arango

et al. 2015

RBT

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Abstract:Growth stanzas or abrupt changes in growth rates are present throughout the life span of fish. Identifying growth stanzas will help to adequately described growth taking into account that fishes are indeterminate growers. In this study, we used length-weight (L-W) relationships to analyze the growth stanzas in the Grouper-Snapper complex of Southern Gulf of Mexico. For this, the type of sexuality, sex and different sexual maturity phase were considered in the analyses of three species of gonochoric Snappers (Lutjanidae) and six species of protogynous hermaphrodite Groupers (Epinephelidae). Welch ANOvA tests were carried out to determine the existence of differences in length and weight between juveniles and adults per sex. According to the observed differences, L-W relationship parameters (a and b), standard error (SE b) and coefficients of determination (R 2 ) were calculated for all species separately by sex and sexual maturity phase. Snappers' juvenile-females b-value ranged from 2.44-2.77, juvenile-males from 2.16-2.94, adult-females from 2.63-2.80 and adult-males from 2.63-2.98. Groupers' b-value ranged for juvenile-females 2.66-3.20, adult-females from 2.73-3.31 and for adult-males 2.93-3.29. For each relationship b-value was t-tested (t-Student) to explore differences from the allometric coefficient (b=3), which indicated changes in body form. Hypothesis test, for regression slopes (b) between Snappers' juvenile-females vs. adult-females and juvenile-males vs. adult-males and Groupers' juvenile-females vs. adult-females and adult-females vs. adult-males, indicated different growth stanzas related to gonadal development for Snappers, and to gonadal development and sex change in Groupers. The identification of growth stanzas is crucial to avoid an overestimation or misleading growth rate which is used in fisheries management to establish some target reference points, such as maximum sustainable yield or yield-per-recruit.

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A review of length-weight relationships of fish from the Segura River basin (SE Iberian Peninsula)

Cited by 36 publications

References 8 publications

Length-weight relationships (LWRs) of 12 Indian freshwater fish species from an un-impacted tropical river of Central India (River Ken)

Length-weight relationships (LWRs) of 12 Indian freshwater fish species from an un-impacted tropical river of Central India (River Ken)

Weight-length relationships for 27 demersal fish species caught off the Cape Verde archipelago (eastern North Atlantic)

Growth stanzas in an Epinephelidae-Lutjanidae complex: considerations to length-weight relationships

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