Ng & Mitra, 2019 (Crustacea, Decapoda, Goneplacidae): additional records and genetic differentiation of allied taxa.

The goneplacid crab, Ng & Mitra, 2019, was originally described from West Bengal, India, in the northern Indian Ocean. Additional material of from off Tamil Nadu in the southeast of India revealed a high degree of size-associated variation in the structures of the anterolateral tooth of the carapace, chelipeds, and male and female pleons. In addition to an in-depth morphological examination of , this study also records the natural coloration of the species and conducts a genetic comparison (with mitochondrial COI and 16S rRNA genes) with its close relatives, (Miers, 1884) and Rathbun, 1914.

Diversity and Distribution of Fiddler Crabs (Crustacea: Brachyura: Ocypodidae) around the Arabian Sea.

Nine species of fiddler crabs (Crustacea: Ocypodidae: Gelasiminae) are known from the Arabian Sea and adjacent waters (Red Sea, Gulf of Aden, Gulf of Oman and Arabian/Persian Gulf): five species of , one , two and one . sequence data match morphological species boundaries and shows high connectivity within each. The fauna is highly endemic, with three species of (, and ) confined to this region, and four others restricted to the Indian Ocean.

First Record of the Genus Sakai, Türkay & Yang, 2006 from India and Description of a New Pseudocryptic Species (Crustacea: Brachyura: Varunidae).

A new pseudocryptic species of the varunid crab genus Sakai, Türkay & Yang, 2006, is described from India based on morphological and molecular evidence. The new species was collected from higher intertidal zones in the Vellar River estuary, Tamil Nadu, southeastern India, in a habitat composed of muddy and sandy sediment. n.

Purification, characterization and biological functions of metalloprotein isolated from haemolymph of mud crab Scylla serrata (Forskal, 1775).

In recent years, an enormous number of naturally occurring biological macromolecules has been reported worldwide due to its antibacterial and anticancerous potential. Among them, in this study, the copper containing respiratory protein namely haemocyanin (HC) was isolated from the haemolymph of mud crab Scylla serrata. The isolated metalloprotein HC was purified using Sepharose column by gel filtration chromatography.

Chitosan from crustacean shell waste and its protective role against lead toxicity in .

In the current study heavy metal removing capability and antioxidant properties of chitosan supplemented diet tested in lead poisoning induced in comparison with and standard fish diet. fishes weighed (20 ± 2gm) were purchased from a local commercial fish pond and acclimated to the laboratory conditions for 10 days. After that fish were dived into four groups, each group received respective feed throughout the experimental period.

Resurrection of Heller, 1862, A Fiddler Crab Closely Related to (Crane, 1975) and (A. Milne-Edwards, 1873) (Decapoda, Brachyura, Ocypodidae), from the Bay of Bengal, Indian Ocean.

The identity of the fiddler crab, Heller, 1862 (type locality: Madras, India), has long been uncertain. Examination of specimens from the Bay of Bengal shows that it is a valid species belonging to the genus Bott, 1973. (Heller, 1862) can be separated from the closely related (Crane, 1975) and (A.

Structure-Function Elucidation of a New α-Conotoxin, MilIA, from .

The a-Conotoxins are peptide toxins that are found in the venom of marine cone snails and they are potent antagonists of various subtypes of nicotinic acetylcholine receptors (nAChRs). Because nAChRs have an important role in regulating transmitter release, cell excitability, and neuronal integration, nAChR dysfunctions have been implicated in a variety of severe pathologies. We describe the isolation and characterization of α-conotoxin MilIA, the first conopeptide from the venom of The peptide was characterized by electrophysiological screening against several types of cloned nAChRs that were expressed in oocytes.

Functional characterization of anti-cancer sphingolipids from the marine crab Dromia dehanni.

Sphingolipids have been considered for many years only as structural components of membranes. It is now acknowledged that they are also involved in controlling cellular processes such as proliferation.The present work was designed to find the anticancer activity of the crab Dromia dehanni hemolymph in in-vivo and in vitro with special reference to the anticancer compound sphingolipids isolation and characterization.

Application of marine-derived polysaccharides as immunostimulants in aquaculture: A review of current knowledge and further perspectives.

The use of antibiotics in the feeds of cultivable aquatic animals has been generally practised to reduce infectious diseases as well as to improve the survival and growth. In recent years, many countries ban to aquatic animals due to the use of large amount of antibiotics and chemotherapies, thus alternative novel strategies are need to promote the growth of aquatic animals and control the pathogens. Dietary supplementation of marine-derived polysaccharides (MDPs) is one of the potential substitutes for antibiotics in aquatic animal feeds.

Extraction and characterization of chitin from sea snail Conus inscriptus (Reeve, 1843).

The chitin was extracted from C. inscriptus and the structure was elucidated. The yield of the C.

A novel antimicrobial therapy for the control of Aeromonas hydrophila infection in aquaculture using marine polysaccharide coated gold nanoparticle.

In the present study, we prepared fucoidan coated Au-NPs (Fu-AuNPs), and examined its antimicrobial activity against Aeromonas hydrophila. The green synthesized Fu-AuNPs were bio-physically characterized by Ultraviolet-visible (UV-Vis) spectroscopy, X-ray Diffraction (XRD), Fourier Transform Infrared spectroscopy (FTIR), Higher Transmission Electron Microscopy (HR-TEM), Zeta potential analysis and Energy Dispersive X-ray spectroscopy (EDX). Fu-AuNPs were crystalline in nature, spherical to triangular in shape, with particle size ranging within 10-100 nm.

High prevalence and infestation of (Isopoda, Cymothoidae) in marine fish (Bleeker 1850).

Cymothoid isopods are parasites that cause severe damage to the fish species. The present study was focused to carry out the parasitic infestation on the one of the important marine fish during the 2 years period between June 2009 and May 2011. 272 fish specimens collected and about 157 (57.

Occurrence, morphology and molecular characterisation of Bopyrid parasite Nobili, 1906 (Isopoda: Bopyridae).

occurs most commonly in Southeast Coast of India parasitized the penaeid shrimp. The present study provides the prevalence, morphological and molecular characterisation of collected from the host In the present study highlights the significance of high prevalence and genetic diversity of in . Intra specific analysis also revealed that species detected in the present study can be easily distinguished from the other genospecies of bopyrids.

New potential host for (Crustacea, Isopoda, Cymothoidae) from Parangipettai, Southeast coast of India.

In the present study parasitic isopod on the marine fishes of the Parangipettai coast are reported. was found attached in the gill chamber of The attachment position of species differs from that of other member of this genus. Until now, was only reported on and .

Novel Conopeptides of Largely Unexplored Indo Pacific Conus sp.

Cone snails are predatory creatures using venom as a weapon for prey capture and defense. Since this venom is neurotoxic, the venom gland is considered as an enormous collection of pharmacologically interesting compounds having a broad spectrum of targets. As such, cone snail peptides represent an interesting treasure for drug development.

Two Nerocila species parasitizing Pomadasys maculatus from Nagapattinam, Southeast coast of India.

Two species of Cymothoidae (Nerocila loveni and Nerocila sundaica) were collected on the host fish Pomadasys maculatus from the Nagapattinam coast. Pomadasys maculatus is a new host for these parasitic isopods not previously recorded in the world. Nerocila loveni was mainly attached on the caudal peduncle of the fish and N.

Parasitic isopods from marine fishes off Nagapattinam coast, India.

This study was conducted from August 2013 to January 2014. Host fishes were collected from the Nagapattinam Coast, India. During the sampling period, 242 fishes were infested out of 1440 specimens examined from nine different species of marine fishes.

Distribution of isopod parasites in Carangid fishes from Parangipettai, Southeast coast of India.

Crustacean parasites absorb their nourishment directly from hosts for feeding. The present study was aimed at collecting information as possible on this so far neglected group of isopod parasites of the Carangid fishes of Parangipettai coastal environment. A very little information is available regarding the isopod parasites of Carangid fishes.

Unusual attachment of Nerocila exocoeti in Hemiramphus far (Forsskal, 1775) from Parangipettai south east coast of India.

A female Nerocila exocoeti was found attached on the head region of the halfbeak fish Hemiramphus far reported for the first time from Parangipettai south east coast of India. This was abnormal position to all known cymothoids attached on the surface of host fishes. This isopod naturally occurs in the fish belongs to Exocoetidae.

Nerocila sundaica (Isopoda, Cymothoidae) parasitizing Otolithes ruber from Nagapattinam, Southeast coast of India.

Several Nerocila species appear to have little or no host specificity. However, in India, Nerocila sundaica was found to be attached to the pectoral fin or on the body of the fish Otolithes ruber. During October 2013, the parasitic prevalence reached 42.

New record of Norileca indica from the west coast of India.

Two hundred and twenty samples of Rastrelliger kanagurta from the Cochin Fisheries Harbour were collected during the month of August 2013. Forty-one specimens (32 females and 9 males) were parasitized by the cymothoid isopod Norileca indica. N.

Host-parasite relationships: Mothocya plagulophora parasitizing Hemiramphus far in the Southeast coast of India.

Totally 384 Mothocya plagulophora were collected in the branchial cavities of Hemiramphus far from the Southeast coast of India during the study period (from July to September 2013). 204 parasites were found in the left branchial cavity and 180 in the right one. The maximum prevalence was observed in July 2013 and the minimum in September 2013.

Occurrence of cymothoid isopod from Miri, East Malaysian marine fishes.

To identify the isopod parasite, which has been recorded from Miri, East Malaysian marine fishes. During the present study, four cymothoid isopods are reported three genera, including Cymothoa eremita, Lobothorax typus, Nerocila longispina and Nerocila loveni. Nerocila longispina and N.

First occurrence of Norileca triangulata (Crustacea: Isopoda: Cymothoidae) from Indian marine fishes.

An ectoparasitic isopod, Norileca triangulata was found in the branchial cavity of Sardinella gibbosa at Parangipettai coastal waters. The present findings represent the first record of N. triangulata and herein reported.