Feeding habits of the deep-sea shrimp Plesionika quasigrandis Chace, 1985 (Decapoda: Caridea: Pandalidae) in the southeastern Arabian Sea

ABSTRACT Species of PlesionikaSpence Bate, 1888 holds significant importance in the commercial harvesting of deep-sea shrimps along the southern coasts of India. Despite Plesionika quasigrandisChace, 1985 being a crucial resource on the southwest coast of India, there is a need for comprehensive inf...

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Published in:Journal of crustacean biology 2024-09, Vol.44 (3), p.1
Main Authors: Chakraborty, Rekha Devi, Sivasankaran, Sreelakshmy, Thanku, Sarada P, Lakshmanan, Sreesanth
Format: Article
Language:English
Subjects:
Aquatic crustaceans
Crustaceans
Deep sea
Deep sea environments
Deep water
Detritus
Diet
Feeding behavior
Feeding habits
Females
Habits
Males
Marine crustaceans
Monsoons
Multivariate analysis
Plesionika
Scavenging
Sex
Shrimps
Variance analysis
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Summary:ABSTRACT Species of PlesionikaSpence Bate, 1888 holds significant importance in the commercial harvesting of deep-sea shrimps along the southern coasts of India. Despite Plesionika quasigrandisChace, 1985 being a crucial resource on the southwest coast of India, there is a need for comprehensive information on its food and feeding habits. We investigated the diet of P. quasigrandis in relation to sex, size, and season. The species exhibited a diet primarily consisting of crustaceans, foraminiferans, and detritus. Both males and females showed a noteworthy reliance on detritus, as indicated by an index of preponderance values exceeding 45.8. The species displayed active scavenging behaviour alongside predatory dietary habits. We observed a decrease in feeding intensity from pre-monsoon to post-monsoon in both males and females. Permutational multivariate analysis of variance (PERMANOVA) revealed significant differences in the diets of P. quasigrandis, considering the combined effects of size and sex (P < 0.01). No significant distinctions were noted in the diet composition between males and females in relation to season.
ISSN:0278-0372
1937-240X
DOI:10.1093/jcbiol/ruae041