Dietary sugarcane juice as a feeding stimulant for the purple mud crab<i>Scylla tranquebarica</i>

Liew, Kit Shing; Yong, Annita Seok Kian; Lim, Leong‐Seng; Kawamura, Gunzo

doi:10.1111/are.14545

Cited by 11 publications

(9 citation statements)

References 20 publications

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“…These ingredients are rich in amino acids that act as chemical signal compounds detectable by the chemosensory systems of decapods [41]. Feeding stimulation of purple mud crabs (Scylla tranquebarica) using 1 mL sugarcane juice of different concentrations in the diet of the mud crabs revealed that the crabs approached the test feeds at 50% and 100% concentrations of sugarcane juice [163]. Overall, stimulants in the decapod feeds helped to minimize the leaching of nutrients and waste through the manipulation of feeding behavior.…”

Section: Current Status Of Nutritional Research and Developmentsmentioning

confidence: 99%

Use of Pelleted Diets in Commercially Farmed Decapods during Juvenile Stages: A Review

Aaqillah‐Amr

Hidir

Azra

et al. 2021

Animals

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The increasing market demand for decapods has led to a considerable interest in cultivating decapod species at a larger scale. Following the development of hatchery technologies, most research has focused on the development of formulated feeds for commercially farmed decapods once they enter the juvenile stages. The use of formulated feed for decapods at a commercial scale is still in the early stages. This is probably because of the unique feeding behavior that decapods possess: being robust, slow feeders and bottom dwellers, their feeding preferences change during the transition from pelagic larvae to benthic juveniles as their digestive systems develop and become more complex. The current practice of decapod aquaculture involves the provision of juveniles with food such as natural diet, live feed, and formulated feed. Knowledge of nutrient requirements enables diets to be better formulated. By manipulating the levels of proteins and lipids, a formulated feed can be expected to lead to optimal growth in decapods. At the same time, the pellet’s physical characteristics are important factors to be considered upon formulating commercially farmed decapod feeds, considering the unique feeding behavior of the decapod. However, most published studies on decapod nutrition lack data on the physical characteristics of the feed types. Thus, it is difficult to establish a standard feed formulation that focuses on the physical pellet properties. Moreover, careful consideration must be given to the feeding behavior of species, as decapods are known as bottom feeders and are robust in terms of handling feed. Information on the pellet forms, diet composition, and unique feeding behaviors in commercially farmed decapods is gathered to suggest potential better formulated diets that can optimize growth and reproduction. Thus, the purpose of this review is to summarize the information that has been published to date and to come up with suggestions on ways to improve the feed formulation in decapods that comply with their feeding behavior and nutrient requirements. Further research is needed to explore the potential of the pelleted feed at the adult stage so the decapod can take full advantage of the nutrients present in the pellets.

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Section: Current Status Of Nutritional Research and Developmentsmentioning

confidence: 99%

Use of Pelleted Diets in Commercially Farmed Decapods during Juvenile Stages: A Review

Aaqillah‐Amr

Hidir

Azra

et al. 2021

Animals

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“…The feeding behaviour of decapod crustaceans has been generally described into several phrases: (1) detection of the chemical signal that involves the flickering of antennule or antennular grooming, and the mouthpart movement, (2) orientation, (3) locomotion which involves the movement of the animals towards the chemical signal's source, (4) arrival at the source, grabbing it with chelae then putting it into mouth and (5) either continuing ingestion or rejecting the source (Costero & Meyer, 1993; Lee & Meyer, 1996; Liew et al, 2020). Phase 1, 2 and 3 can be mediated by the ‘distant chemoreception’, Phase 4 is mediated by the distributed chemoreception, while Phase 5 is controlled by the oesophageal taste receptors.…”

Section: Chemoreception and Feeding Behaviour In Decapod Crustaceansmentioning

confidence: 99%

“…Based on the personal observation in our previous study, the mud crab, Scylla tranquebarica , was attracted to the sugarcane juice‐coated fresh squid or fish, and ingested it. However, when the thawed squid or fish that had been frozen in the freezer for some period was used instead, the mud crab still was attracted to the food items but it rejected them and swam away (Liew et al, 2020). This finding indicates that the acceptability of feed itself by the farmed decapod crustaceans should be preliminary determined as well, so that whether only CA or FS or both of them are required to be supplemented into the diets.…”

Section: Conclusion and Recommendationsmentioning

confidence: 99%

Amino acids as chemoattractant and feeding stimulant for the commercially farmed decapod crustaceans: A brief review

Lim

Liew

Ebi

et al. 2021

Aquaculture Research

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The aquaculture of decapod crustaceans is expanding continuously to supply protein source for human consumption. Therefore, intensive research is necessary to improve the quality of the feeds in decapod crustacean farming. Decapod crustaceans are slow feeders, and dietary inclusion of plant proteins reduces their intakes on the feeds. Dietary supplementation of chemoattractants (CA) (to reduce food searching duration) and feeding stimulants (FS) (to stimulate ingestion) is therefore necessary to

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“…During the chemical stimulation, the threshold concentration of the sugarcane juice at the mouthparts and walking legs were maintained to comply with previous reports. According to Liew et al (2020), the threshold concentration of the sugarcane juice at the mouthparts and walking legs was between 1% and 10% in S. tranquebarica. The movement and dispersion of the sugarcane juice around the appendages were conspicuous due to its greenish colouration.…”

Section: Stimulimentioning

confidence: 99%

“…To stimulate the walking legs or swimming legs, a small piece of salted fish flesh was placed close to their dactyl. As described by Liew et al (2020), the feeding behaviour in response to the stimulation was evaluated based on three appendage movements: (i) increase in antennular flicking rate, (ii) remarkable movement of the third maxillipeds, and (iii) probing the test chamber bottom with the claws. These behaviours were visually observed, video-recorded, and a total of 30 video recordings were analyzed.…”

Section: Behavioural Bioassaymentioning

confidence: 99%

Chemosensitivity and role of swimming legs of mud crab,Scylla paramamosain,in feeding activity as determined by electrocardiographic and behavioural observations

Kawamura

Loke

Lim

et al. 2021

PeerJ

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Swimming crabs have a characteristic fifth pair of legs that are flattened into paddles for swimming purposes. The dactyl of these legs bears a thick seta along its edge. The chemoreceptive and feeding properties of the seta are supported with scientific evidence; however, there is no available data on the sensitivity of the setae in portunid crabs. The underlying mechanisms of the chemo- and mechano-sensitivity of appendages and their involvement in feeding activities of the mud crab (Scylla paramamosain) were investigated using electrocardiography and behavioural assay, which focused on the responses of the mud crab to chemical and touch stimulus. Electrocardiography revealed the sensory properties of the appendages. The dactyls of swimming legs and the antennules were chemosensitive, but not mechanosensitive and vice versa for the antennae. However, the mouthparts, claws, and walking legs were chemo- and mechanosensitive. Only the chemosensitive appendages, including the swimming legs, were directly involved in feeding. The flattened dactyls of the swimming legs were more efficient than the pointed dactyls of the walking legs in detecting the food organism crawling on the substrate. The structural features enhanced the capacity of the crab in coming into contact with scattered food items. This study revealed that the swimming legs are important appendages for feeding in the mud crab.

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Dietary sugarcane juice as a feeding stimulant for the purple mud crabScylla tranquebarica

Cited by 11 publications

References 20 publications

Use of Pelleted Diets in Commercially Farmed Decapods during Juvenile Stages: A Review

Use of Pelleted Diets in Commercially Farmed Decapods during Juvenile Stages: A Review

Amino acids as chemoattractant and feeding stimulant for the commercially farmed decapod crustaceans: A brief review

Chemosensitivity and role of swimming legs of mud crab,Scylla paramamosain,in feeding activity as determined by electrocardiographic and behavioural observations

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