Untitled

Marković, Olivera; Ikica, Zdravko; Đurović, Mirko; Mandić, Milica; Pešić, Ana; Petović, Slavica; Joksimović, Aleksandra

doi:10.4194/1303-2712-v16_3_29

Cited by 3 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Marković et al [47] suggested that overfishing was the cause of the decreased size at 50% maturity (25.7 mm CL) observed for N. norvegicus in the South Adriatic Sea, the same size as the one found in the NW Mediterranean. Indeed, the abrupt decline in population abundances, which is observed in the NW Mediterranean Sea, caused by overfishing [4], can be followed by shifts in size and age at first maturity [48][49][50].…”

Section: Discussionmentioning

confidence: 85%

Size at Sexual Maturity of Deep-Sea Unexploited Caribbean Metanephrops binghami (Boone, 1927) and Overexploited Mediterranean Nephrops norvegicus (Linnaeus, 1758) Using Morphometric and Gonadal Staging Approaches

Paramo,

Rodriguez,

Zabala

et al. 2024

Fishes

View full text Add to dashboard Cite

The deep-sea Caribbean lobster (Metanephrops binghami) and the Norway lobster (Nephrops norvegicus) are Nephropidae species of high commercial interest. Although the first one still remains unexploited, the second is overexploited in the Mediterranean Sea. For effective fisheries management, size at sexual maturity is an essential indicator to protect immature individuals from exploitation. The estimation of this indicator can, however, be biased due to the difficulty of differentiating juveniles from adults by their size structure due to the natural process of molting. This study aims to estimate the size at sexual maturity of M. binghami and N. norvegicus females by comparing the effectiveness of the morphometric method versus the macroscopic evaluation of gonad maturity. Samples of M. binghami were collected from the Colombian Caribbean Sea in August and December 2009, March and May 2010, and August 2020 to May 2021. Samples of N. norvegicus were collected from the northwestern Mediterranean Sea from 2019 to 2022. Similar sizes at sexual maturity were found for M. binghami between the morphometric approach (ranging from 28.6 to 33.9 mm cephalothorax length, CL) and the gonadal staging approach (31.4 mm CL). Conversely, for N. norvegicus, the morphometric approach yielded higher measurements (between 27.2 and 30.4 mm CL) than the gonadal approach (26.0 mm CL). This discrepancy might stem from the intense fishing overexploitation conditions of N. norvergicus, leading to a physiological adaptation that enables earlier gonadal maturation at faster rates than morphometric adaptation. Further research is required to elucidate these discrepancies and the effect of overexploitation on physiological (i.e., mature gonads) and functional maturity (i.e., capacity to brood eggs at a larger size).

show abstract

Section: Discussionmentioning

confidence: 85%

Size at Sexual Maturity of Deep-Sea Unexploited Caribbean Metanephrops binghami (Boone, 1927) and Overexploited Mediterranean Nephrops norvegicus (Linnaeus, 1758) Using Morphometric and Gonadal Staging Approaches

Paramo,

Rodriguez,

Zabala

et al. 2024

Fishes

View full text Add to dashboard Cite

show abstract

Occurrence and Distribution of Crustacean Decapoda Species in Montenegrin Territorial Waters with Special Attention to the Most Significant Species

Marković¹,

Pešić²,

Petović³

et al. 2021

The Handbook of Environmental Chemistry

View full text Add to dashboard Cite

Theoretical size at the onset of maturity and its density-dependent variability as an option in crustacean fisheries management

Santana

Lordan

Power

2021

ICES Journal of Marine Science

View full text Add to dashboard Cite

Theoretical size at the onset of maturity (TSOM) for female Norway lobster was estimated by a new methodology based on the probability distributions of mature individuals built on physiological maturity measures. Onset of maturity using TSOM varied from 18.4- to 33.7-mm carapace length for the Irish functional management units (FUs). These estimates showed a significant negative linear relationship (R2 = 0.60) with population density and a significant positive linear relationship with average size in females (R2 = 0.84). The size class at which 50% of the females are sexually mature (L50) was linked to the new TSOM metric by a significant positive linear relationship (R2 = 0.40). This set of linear relationships ultimately allowed TSOM and L50 to be estimated without a requirement for maturity stages to be distinguished. As well as contributing to the stock assessment and management of Nephrops (e.g. in data-limited FUs) and its potential for the calibration of more routinely used estimates, TSOM might be applied in new species and meta-analyses where size of maturity data are scarce. This new metric also better-defines the maturity process since, taken together, TSOM, L50, and smallest berried female represent sequential maturity events: (i) onset of maturity, (ii) 50% mature (from gonad staging), and (iii) berried females.

show abstract

Untitled

Cited by 3 publications

References 10 publications

Size at Sexual Maturity of Deep-Sea Unexploited Caribbean Metanephrops binghami (Boone, 1927) and Overexploited Mediterranean Nephrops norvegicus (Linnaeus, 1758) Using Morphometric and Gonadal Staging Approaches

Size at Sexual Maturity of Deep-Sea Unexploited Caribbean Metanephrops binghami (Boone, 1927) and Overexploited Mediterranean Nephrops norvegicus (Linnaeus, 1758) Using Morphometric and Gonadal Staging Approaches

Occurrence and Distribution of Crustacean Decapoda Species in Montenegrin Territorial Waters with Special Attention to the Most Significant Species

Theoretical size at the onset of maturity and its density-dependent variability as an option in crustacean fisheries management

Contact Info

Product

Resources

About