Mating Behaviour of Flower Crab, Charybdis Feriata (Linnaeus)

Soundarap, P.; Ian, Ian; D, Varadharajan; Ilavarasan, N; Kumar, Jaideep; Kumar, Ashwini

doi:10.4172/2155-9910.1000127

Cited by 6 publications

(1 citation statement)

References 22 publications

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“…The berried swimming crab mostly remains buried in the sand and carries its eggs until the larvae hatch as zoeae, which drift about in the water current (Rasheed and Mustaquim, 2010). During spawning seasons, female swimming crabs have a period of low catchability when they cease feeding and become inactive in preparation for the molt and are not easily catchable with baited traps or drop nets (Soundarapandian et al, 2013). Therefore, we suggest that autumn is the preferred season for fishing of these three swimming crab species in the TS.…”

Section: High Catch Seasons and Distribution Patternsmentioning

confidence: 99%

Effect of the El Niño–Southern Oscillation (ENSO) Cycle on the Catches and Habitat Patterns of Three Swimming Crabs in the Taiwan Strait

Naimullah

Lee

et al. 2021

Front. Mar. Sci.

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The swimming crabs is a crucial predator species in benthic habitats and a high value in commercial fishery industries in subtropical and tropical Asia. The climate variability caused by El Niño–Southern Oscillation (ENSO) events has substantial impacts on the catch and habitat of this species. In this study, a weighted habitat suitability index (HSI) model was constructed using logbooks and voyage data records from Taiwanese crab vessels (2013–2019) with the addition of environmental variables to examine the influence of ENSO events on catch rates (CRs) and habitat suitability for Charybdis feriatus, Portunus pelagicus, and Portunus sanguinolentus in the Taiwan Strait (TS). The autumn (September–October) is the major fishing season for catching these three swimming crab species in the TS. A high CR of P. sanguinolentus was observed across the TS, whereas high CRs of P. pelagicus and C. feriatus were recorded in areas in the southern and northern TS, respectively, during autumn. Moreover, the CRs for C. feriatus and P. pelagicus were higher (>7.0 and >8.0 kg/h) during La Niña events, with the increase being more than 40.0% compared with the CRs under normal and El Niño events in autumn. For P. sanguinolentus, the CRs were higher during both La Niña and El Niño events (>8.0 kg/h) compared with normal years. The high CRs for C. feriatus and P. sanguinolentus during autumn in La Niña years co-occurred with high sea temperature and low salinity, whereas the high CR of P. pelagicus co-occurred with high sea temperature and high salinity. Furthermore, the high CRs for C. feriatus and P. pelagicus were observed in areas with high HSI in the La Niña years but were distributed more widely with a lower HSI during normal and El Niño years. The low CRs for C. feriatus and P. pelagicus during normal and El Niño years and the low CR for P. sanguinolentus in normal years during autumn were highly consistent with substantial shrinkage of suitable habitats. Our findings suggest that ENSO events strongly affected the catch and habitat suitability of C. feriatus, P. pelagicus, and P. sanguinolentus during autumn in the TS.

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Section: High Catch Seasons and Distribution Patternsmentioning

confidence: 99%

Effect of the El Niño–Southern Oscillation (ENSO) Cycle on the Catches and Habitat Patterns of Three Swimming Crabs in the Taiwan Strait

Naimullah

Lee

et al. 2021

Front. Mar. Sci.

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Touch-sensitive bristles on the carapace of the mud crab Scylla paramamosain may be receptors for courtship signals

et al. 2020

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Bristle patches on the carapace behind the eyes were found for the frst time in both males and females of the four species of mud crab Scylla spp. Electrocardiography revealed that the bristle patches of Scylla paramamosain were sensitive to touch (with a glass capillary) but not to chemical stimulation (with sugarcane juice). To elucidate the function of these touch signals, the courtship behaviour of S. paramamosain was video-recorded in a broodstock tank. A male approached a female, extended a walking leg over her carapace, touched her bristle patches with a dactyl, mounted her, and probed the bristle patches further with the third maxillipeds. Touch stimulus may be a signal for courtship in Scylla and one of the chain stimuli for the completion of mating behaviour.

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Mating behaviour of the orange mud crab, Scylla olivacea: The effect of sex ratio and stocking density on mating success

Waiho

Mustaqim

Fazhan

et al. 2015

Aquaculture Reports

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Mating Behaviour of Flower Crab, Charybdis Feriata (Linnaeus)

Cited by 6 publications

References 22 publications

Effect of the El Niño–Southern Oscillation (ENSO) Cycle on the Catches and Habitat Patterns of Three Swimming Crabs in the Taiwan Strait

Effect of the El Niño–Southern Oscillation (ENSO) Cycle on the Catches and Habitat Patterns of Three Swimming Crabs in the Taiwan Strait

Touch-sensitive bristles on the carapace of the mud crab Scylla paramamosain may be receptors for courtship signals

Mating behaviour of the orange mud crab, Scylla olivacea: The effect of sex ratio and stocking density on mating success

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