Growth Pattern and Specificity of Attachment of Lagoon Crab (Callinectes amnicola) Fouled with Barnacles (Chelonibia patula) from Lagos Lagoon, South West, Nigeria

Lawal-Are, Aderonke Omolara; Afolabi, J.O.; Akinwunmi, Mosunmola Florence

doi:10.3923/jfas.2014.311.320

Cited by 4 publications

(5 citation statements)

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“…The sex-ratio in L. dubia from the Gulf of Gabès is close to 1, as is commonly observed in brachyurans (Hartnoll, 1978;Lawal-Are, 2010). This ratio was indicative of a slight male bias.…”

Section: Discussionsupporting

confidence: 69%

“…Research Article 2021). In this way, gonadosomatic index (GSI, unit mass of gonad per unit mass of bodyweight) (Nolan et al, 2022) can be used to investigate gonad variations throughout the year (Tapella et al, 2002;Lawal-Are, 2010;Baklouti et al, 2015;Basilone et al, 2021). Moreover, condition factors have been used to understand population health and variability (Lloret et al, 2012;Baklouti et al, 2015;Brosset et al, 2017) and to measure stored body energy (Vila-Gispert & Moreno-Amich, 2001).…”

Section: Introductionmentioning

confidence: 99%

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Reproductive features of the invasive crab Libinia dubia H. Milne Edwards, 1834 from the Central Mediterranean Sea

et al. 2023

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Reproduction is a key feature in the dynamics and establishment of non-indigenous species in new areas. Thus, reproductive biology studies are particularly important for predicting whether alien species can become invasive and to pinpoint the most effective time to implement management options and mitigation actions. Here, we report the reproductive aspects of the invasive crab Libinia dubia from the central Mediterranean Sea. The population was sampled monthly for two years (January 2015 to December 2016) on the southern Tunisian coasts (Gulf of Gabès). A total of 4469 specimens were examined, of which 50.88% were males and 49.12% were females (Confidence Interval, CI = 0.015). The overall sex ratio was slightly male-biased (1: 0.97). The first gonadal sexual maturity was earlier in females than in males. Fecundity increased with crab size and weight. Libinia dubia has a single annual spawning season (March to July) in the study area. Species reproductive activity was greatest in spring, with a peak in May, while the sexual rest phase occurred during October and November in females and from September to November in males. Reproduction is one of the most influential factors in the ability of invasive species to successfully thrive and establish a population in a new environment. Our results provide important biological inputs for improving the understanding of L. dubia reproductive performance and support recommendations for research relevant to the prediction of future L. dubia invasions.

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“…The sex-ratio in L. dubia from the Gulf of Gabès is close to 1, as is commonly observed in brachyurans (Hartnoll, 1978;Lawal-Are, 2010). This ratio was indicative of a slight male bias.…”

Section: Discussionsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Reproductive features of the invasive crab Libinia dubia H. Milne Edwards, 1834 from the Central Mediterranean Sea

et al. 2023

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“…The higher condition index of the female blue crabs from both habitats compared to the males implies better living conditions for females compared to the males. Lawal‐Are, Afolabi, and Akinwunmi (), in documenting the relationship between the habitat quality of the Lagos Lagoon and condition factor ( k ) of the blue crab, attributed a higher k ‐value to better habitat living conditions.…”

Section: Discussionmentioning

confidence: 99%

Sex‐specific affinity for redox‐active metals influences antioxidant responses of Callinectes amnicola (blue crab) populations in littoral and open water habitats of a tropical coastal lagoon

Jerome

Hassan

Chukwuka³

2017

Marine Ecology

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The critical role of ecological preferences and opportunity in determining contaminant uptake and adaptive responses of sexes in the wild is still poorly understood. This ecological relationship was investigated by measuring metal bioaccumulation and antioxidant activity in male and female blue crab populations from open water habitat and the littoral/inter‐tidal zone of the Lagos Lagoon. A total of 741 samples of blue crab (littoral zone: 263 females, 137 males; open water zone, 230 females, 111 males) was collected monthly over 24 months (January 2010–January 2012) from each site and the measurements of morphometric features (wet weight, carapace length, carapace width) were recorded; condition index, metal (redox active: Cu, Zn, redox inactive: Pb, Cd) concentration in tissues (gills, hepatopancreas, gonads and muscle) and antioxidant activity (superoxide dismutase, reduced glutathione, glutathione peroxidase, catalase and malondialdehyde) were measured for each sex. Monthly sediment samples for both habitats were also analysed for metals using standard methods. Female crabs were significantly larger (p < .05) with a better condition index than the male crabs across sites and seasons, while higher oxidative damage was recorded in male crabs in the littoral zone compared to the open water zone. The results show that there was a negative association between antioxidant activity and lipid peroxidation; a negative relationship between concentrations of redox‐inactive metals (Pb and Cd) and antioxidant activity in male crab tissues; and a positive relationship between uptake of a redox‐active metal (Cu) and antioxidant activity in female crab tissues. Although these trends suggest sex‐specific toxicity, they also associate redox‐inactive metals with the downregulation of antioxidant activity and oxidative stress. Furthermore, the higher condition index of females corroborates the possibility of sex‐specific toxicity, while the larger‐sized females compared to males suggests size‐sexual dimorphism in the blue crab populations. The site‐specific oxidative damage between sexes may be attributed to the different complexity of both habitats, which affords different ecological opportunities for the sexes.

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“…1 Map of Lagos Lagoon. Source [19] the freezer at temperatures below 0 °C as directed by the laboratory assistant. Samples were removed and thawed when needed for analysis.…”

Section: Preservation Of Samplesmentioning

confidence: 99%

Chemical compositions of bivalves shells: Anadara senilis, Crassostrea gasar, and Mytilus edulis and their potential for a sustainable circular economy

et al. 2022

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The paradigm termed circular blue economy has become a concept that is greatly associated with the utilization of marine resources to ensure continued sustainability. Several constraints and limitations related to plants and plant products means human needs to look beyond green economy. The chemical constituents of animals also allow researchers to evaluate their growth and development. This study evaluates the proximate and chemical compositions of Anadara senilis, Crassostrea gasar, and Mytilus edulis, with emphasizes on their calcium and calcium carbonate contents and industrial importance. A total of 270 live bivalve samples were collected from March to May 2021 from Lagos Lagoon harbour. Each bivalve sample collected was opened to separate the flesh from the species’ shell, sun-dried and transported to the laboratory for analysis. One-way analysis of variance was adopted to estimate the significance level at 5% (P < 0.05). Post-HOC LSD test was performed to verify the disparity of mean. The results of this study revealed that Mytilus edulis shells had the highest moisture, crude protein, and crude fat at 1.15 ± 0.05%, 4.29 ± 0.43%, and 0.96 ± 0.15%, respectively and showed significant difference (P < 0.05). Anadara senilis shells had high levels of calcium (51.00 ± 2.87 mg/kg), magnesium (0.59 ± 0.23 mg/kg) and calcium carbonate (60.91 ± 2.50 mg/kg). Due to the high Ca and CaCO3 contents obtained, these shells can be processed alongside other biomaterials into food supplements, animal feeds, dental products, plant nutrient supplements, ornamental purpose, construction, agricultural industries among others. These would enhance the development of cottage industries, promotes farming of shell animals, help to alleviate the unemployment crisis and creation of wealth from substances which would have been regarded as waste.

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Growth Pattern and Specificity of Attachment of Lagoon Crab (Callinectes amnicola) Fouled with Barnacles (Chelonibia patula) from Lagos Lagoon, South West, Nigeria

Cited by 4 publications

References 1 publication

Reproductive features of the invasive crab Libinia dubia H. Milne Edwards, 1834 from the Central Mediterranean Sea

Reproductive features of the invasive crab Libinia dubia H. Milne Edwards, 1834 from the Central Mediterranean Sea

Sex‐specific affinity for redox‐active metals influences antioxidant responses of Callinectes amnicola (blue crab) populations in littoral and open water habitats of a tropical coastal lagoon

Chemical compositions of bivalves shells: Anadara senilis, Crassostrea gasar, and Mytilus edulis and their potential for a sustainable circular economy

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