The fanworm Branchiomma luctuosum (Grube, 1870) is here reported from the Marina of Saidia, representing the first record of this alien species from Morocco and for the entire Mediterranean coast of Africa. Recreational boating, and in general maritime transport, constitutes the most possible vector of introduction. As this species can show invasive traits and easily propagate in new habitats, a monitoring

The marine environment of Bangladesh is bestowed with numerous living resources, including fish, mollusks, crustaceans, corals and aquatic plants including seaweed. Marine pollution is now a buzzword since pollution of the marine environment exerted devastating impacts on the aquatic ecosystem. Bangladesh has ratified most of the international conventions and laws regarding marine pollution, but the

Virtual population analysis using the Jones’ length-based cohort method was conducted to the Glory scallop (Mimachlamys gloriosa Reeve, 1853) from Asid Gulf, Philippines. The study aimed to reconstruct the biomass and population structure as inputs to estimating the maximum sustainable yield (MSY) along with the fishing mortality expended on the stock and evaluate the effect of introducing minimum

Many crustaceans and commercial fish species are considered to be essential aquatic resources of Bangladesh coastal waters. However, a little is known regarding biometric indices, e.g. length-frequency distributions (LFDs), length-weight relationships (LWRs), and relative-condition (KR) factors of those crustaceans and fishes, which is vital for conservation and management. Our study investigated LFDs

Genus Platycephalus in the Indo-West Pacific comprises about 20 species, of which only five are known in the northwest Pacific. In this study, we sequenced and annotated the complete mitogenome of 4 species: Platycephalus indicus, Platycephalus cultellatus, Platycephalus sp., Platycephalus sp. 2, and downloaded two complete mitogenome of Platycephalus from GenBank for comparative mitogenome researches

Bregmaceros mcclellandi species, abundant along the north-west coast of India, are economically valuable and ecologically vital marine resources. A comparative analysis of an malpigmentation specimen and a normal specimen indicated no differences in the morphometric and meristic characteristics. The specimen recorded in the present study was a mature female with a total length of 101 mm and a total

The scyphozoans are considered as one of the potential bio-indicator species of the coastal marine ecosystems. The genus Crambionella, belonging to the family Catostylidae, represents a total of four species globally. The jellyfish Crambionella orsini (Vanhöffen in Bibliotheca Zool 1:1–52, 1888) is mostly distributed to the western Indian Ocean. In this present study, this species is reported from

Lenght – weight relationships (LWRs) were estimated for eight elasmobranchs (five sharks and three batoids) off the Gökçeada Island, Northern Aegean Sea. All specimens were collected by commercial bottom trawl at depths ranging from 120–400 m between February and November 2019. A total of 2991 individuals (1143 Scyliorhinus canicula, 110 Scyliorhinus stellaris, 795 Galeus melastomus, 575 Etmopterus

Toxic metal and trace element levels in the ocean are increasing heterogeneously in the world, which is why it is important to assess their concentrations in organisms of fishing interest. The study of metal concentrations in different fishing grounds is of vital importance for nutritional control. In this study, two fishing grounds have been studied, in the Canary Islands and in Portugal, in each

The current status of the elasmobranchs’ populations and distribution in the Canary Islands is uncertain. Here we investigate the abundance and distribution patterns of coastal elasmobranchs of Tenerife, with a special attention on the Aetomylaeus bovinus population using a photo-identification methodology. A total of 35 visual surveys were conducted in 5 coastal areas, in which pictures were taken

This study analysed the shell morphology, morphometric relationships and relative growth in three topshell species (Phorcus lineatus, Phorcus sauciatus and Steromphala umbilicalis) collected in the Algarve coast (southern Portugal). A total of 1382 individuals were sampled (465 P. lineatus, 447 P. sauciatus and 470 S. umbilicalis) and all species comprised individuals with broad size and weight ranges

Bangladesh has a subtropical monsoon driven climate with diverse seasonal variations. These variations are primarily influenced by atmospheric heat-flux, local hydrodynamics, and geomorphological features. The present study describes the seasonal temperature-salinity profile of a tidal river Halda considering two distinct seasons (monsoon and winter). Surface and bottom temperature and salinity varied

Accumulation of heavy metals in contaminated sediments and Sole fish, Euryglossa orientalis from Musa estuary were investigated. For this purpose, the sediments and fish samples were collected from 10 sampling sites with different of sources pollution and ecological condition around the Musa estuary. The samples were analyzed by a cold vapor Atomic Absorption Spectrometer Leco AMA-254. Based results

Demographics and reproductive characteristics of Pseudetroplus maculatus (Bloch, 1795) in Cochin Estuary situated on the South-west coast of India were studied during June 2015 to May 2016. A total of 710 individuals (male = 392 and female = 318) were collected from the Cochin Estuary having TL and BW ranging from 43.2–93.2 mm and 1.45–13.64 g respectively were used for the study. The von Bertalanffy

The relationships of size and weight of otoliths with length and weight and mass of fish were estimated for four ponyfish species (Aurigequula fasciata; Deveximentum ruconius; Nuchequula gerreoides and Photopectoralis bindus) from the Persian Gulf and the Oman Sea. The results revealed some significant relationships (p < 0.05) between otolith length and width vs. fish length, and otolith weight vs

Mactra stultorum is one of the most abundant bivalve species along the Tunisian coast. Its current exploitation status represents a major concern for the fishing industry in Tunisia. This study investigates the stock distribution, population structure and some environmental parameters associated with M. stultorum. The obtained results reveal that this bivalve had significant density variation in the

Threadfins (Perciformes: Polynemidae) are commercially important, highly prized table fishes in India. In this study, we analysed the mitochondrial COI gene for validating species identification and phylogeny of threadfins occurring in Indian waters. Consequently, we developed barcodes for ten polynemids belonging to the genera Polydactylus, Eleutheronema, Leptomelanosoma, Filimanus and Polynemus.

Population parameters of Gerres filamentosus Cuvier, 1829 (Family: Gerreidae) along the south west coast of India were assessed using FiSAT II software for samples collected from July 2009 to June 2011. The asymptotic lengths (L∞), growth constants (K) and lengths at first maturity (Lm50) for female and male were 304.5 mm, 0.40 year−1, 203.0 mm and 283.5 mm, 0.45 year−1, 189.0 mm, respectively. The

The land crab Johngarthia lagostoma is endemic to the Atlantic oceanic islands of Ascencion, Trindade and Martin Vaz, Fernando de Noronha and the Rocas Atoll. A previous study found significant genetic structure in J. lagostoma between the oceanic islands of Trindade and Fernando de Noronha/Rocas Atoll. Likewise, the first stage zoea, herein described and illustrated based on material from the remote

The buoyancy properties of anthropogenic microparticles (AM) have contributed to their wide dispersion across rivers and oceans, as they tend to float and can be transported by wind and marine currents. The aim of this study was to evaluate the abundance and distribution of AM in relation to zooplankton abundance in three coastal localities from the southern Mexican Pacific. Thirty-nine zooplankton

This study reports the first data on length–weight (LWR) and length-length (LLR) relationships, and seasonal body condition factors of Blueline snapper, Lutjanus coeruleolineatus (Rüppell, 1838) inhabiting Salalah Coast, Sultanate of Oman. The regression slopes of LWRs were significantly different between immature and mature groups, and among different seasons, but it was not significant between male

Based on the role of mollusks in trophic webs, this study aimed to implement a benthic food availability index (BFAI) estimated from soft-bottom benthic mollusks in fishing areas. Two lobsters fishing regions, Caibarién and Batabanó, were sampled. The design of BFAI was based on the densities, biomasses, and species richness of mollusks at eight sites in each region. Mollusks and benthos communities

The Sundarbans Delta, one of India's Ramsar sites, is an ecologically important wetland that is home to a variety of endemic and threatened aquatic species, including mudskippers. However, there is a knowledge gap about their fundamental aspects, such as population dynamics, reproductive biology and other life-history characteristics, which hindered their conservation. Therefore, the demographics of

Spatial variations in the phytoplankton community compositions, carbon dioxide system and ancillary water column properties, were monitored across various frontal systems in the Indian Sector of Southern Ocean (ISSO) during austral summer 2013. Four major frontal systems, namely, the Agulhas Return Front (ARF), Southern Subtropical Front (SSTF), Subantarctic Front (SAF) and Polar Front (PF) were identified

In the present study, three species of brachyuran crabs, Ocypode brevicornis H. Milne Edwards, 1837 (Ocypodidae), Pilumnopeus convexus (Maccagno in Annali Del Museo Civico Di Storia Naturale Di Genova 59:171–186, 1936) (Pilumnidae) and Atergatis laevigatus A. Milne-Edwards, 1865 (Xanthidae), are reported for first time from Maharashtra, in India. The samples were collected from intertidal areas of

Present study described the new distributional record of Peristedion liorhynchus (Günther in Proc of the Zool Soc Lond 1871:652–675, 1872) from Central Indian Ocean. Two specimens were collected from the continental slope of Arabian Sea, India at a depth of 934 m. Previous occurrence of P. liorhynchus in the Indian Ocean only came from its eastern region. The present record of this species extends

Antibiotics, chemicals, and probiotics are often used in aquaculture activities to successfully culture species. The purpose of this study was to compare the effectiveness of the application of erythromycin, elbayou, and Rica-1 probiotic in the rearing of S. paramamosain mud crab larvae development to the crablet stage. The newly hatched healthy larvae zoea-1 were cultured in nine fiber tanks with

Located in the south of the western Mediterranean, in the central Algerian region, the eastern coast of Cherchell is characterized by its ecological, agricultural, tourist, cultural and patrimonial vocations and by its low topography in many places. It has participated over time in the economic development of the region (agriculture and beach tourism). In recent years, this coast, like all the world's

New records of four fish species from the coast of Sea of Oman are reported: Symphysanodon andersoni (4 specimens, 254–564 mm SL), Epinephelus fasciatus (3 specimens, 147–389 mm SL), Atrobucca nibe (3 specimens, 149–422 mm SL) and Minous usachevi (5 specimens, 87–164 mm SL). All specimens were obtained through surveys by a trawler operating in the area during the period November 2010 – May 2011. The

Length weight relationships (LWRs) and form factor of 8 marine fishes were assessed from the Bay of Bengal, Bangladesh through sampling from November 2019 to October 2020 with gill net (mesh size, 3-6 cm). Body weight was weighed with 0.01 g precision and total length was measured nearest to 0.1 cm. Our study provided LWR of Scomberomorus koreanus for the first time. LWR of Drepane punctata, D. longimana

This study focused on the assessment and quantification of discards generated by clam fisheries along the northern Alboran Sea (western Mediterranean). Discard samples (n = 278) were collected throughout one year on board nine commercial vessels. A total of 129 species were identified, mostly represented by molluscs (72 spp.), arthropods (20 spp.) and echinoderms (12 spp.). Molluscs dominated in terms

The Sundarbans Estuarine System (SES) is a mangrove dominated monsoonal, macrotidal estuarine system in the east coast of India and is one of the best nursery grounds for shellfish populations in this region. The early developmental stages of penaeid prawns prefer the estuaries to complete their bipartite lifecycle. The present study, conducted within the extremely difficult and challenging environment

Yellowtail clownfish, Amphiprion clarkii (Bennett, 1830), is a member of the family Pomacentridae and are commonly occur in Indo-Pacific waters. It is a commercially important fish for ornamental trade worldwide. The present study aimed to study the molecular identification of three morphotypes of Amphiprion clarkii collected from Lakshadweep (vivid yellowish), Gulf of Mannar (golden yellowish), and

This work evaluates the quality of Itanhaém Estuary water in Autumn; Winter, and Spring. In each station were collected samples of water and sediment, being collected subsurface, middle, and bottom water to analyze physical-chemistry, chemistry, and ecotoxicological parameters of the water and the concentration of the organic matter and Phosphorus in sediment. It was developed acute toxicity tests

Herein, a checklist of parasitic isopods infesting marine decapod and fishes off Mexico’s coasts is presented. Using information based upon a thorough review of published papers in databases, the checklist was structured by order, suborder, superfamily, family, and species of isopods, along with host species, attachment site and damage in the host, and the locality. A total of 33 parasitic isopod species

The present study reports an unusual caligid copepod, Anchicaligus nautili (Willey, 1896) infesting the deep-water chambered nautilus Nautilus pompilius Linnaeus, 1758 from the Indian Ocean. Both male and female are redescribed and illustrated based on the materials recovered from the museum collection of the Department of Aquatic Biology & Fisheries, University of Kerala, collected in March, 1985

This study reports the DNA barcoding of the species of the family: Leiognathidae found along the Bay of Bengal, Odisha coast to understand their molecular phylogeny and check whether the molecular data congruence with the morphological delineation or not. Next generation sequencing (NGS) platform was used to carry out the sequencing of both cytochrome c oxidase subunit I (COI) and 16s ribosomal RNA

In this study, seven species of Pomadasys from the Persian Gulf and the Gulf of Oman are examined. This genus includes species with high economic and ecological importance, and taxonomical challenges are due to their very similar meristic features. Three species of Pomadasys aheneus, P. furcatus and P. olivaceus are reported for the first time from the Iranian waters of the Persian Gulf and the Gulf

Xanthism, an abnormal skin colouration of yellow to orange-gold, is an uncommon phenomenon in nature and xanthochromic specimens are rare. We report and describe four incidences of adult xanthochromic specimens observed in Scomberomorus commerson, Lobotes surinamensis, Sphyraena putnamae and Seriola rivoliana collected from the Arabian Sea coasts of Pakistan. The specimens of S. commerson, S. putnamae

A rare species of bivalve clam Mactra aequisulcata G. B. Sowerby III (1894) reported for the first time from the Vengurla beach along the Sindhudurg coast of Maharashtra and nearby coastal stretches from the west coast of India. After comparing with the type illustration and malacological collections present in the National Zoological Collections of the Zoological Survey of India, it revealed that

Three cumacean species, Eudorella nana Sars, 1879, Leucon affinis Fage, 1951, Leucon siphonatus Calman, 1905, were recorded for the first time and one rare amphipod presence, Stenothoe bosphorana Sowinsky, 1898, was confirmed in the Adriatic basin.

The present article reports the new distribution of the species Moringua raitaborua (Hamilton, 1822) which represent the first occurrence of the genus Moringua from the Chilika lagoon along with morphometric and meristic details of the species. During the Chilika survey, two specimens of the said species were collected from the southern sector of Chilika lagoon. The species is characterized by the

Nemipterus randalli is one of the predominant species in demersal fisheries along the Indian coast. Analysis of morphological divergence among the stocks using different stock identification methods provides a basis for sustainable resources management. In the present study, body and otolith shape was used to elucidate the stock structure of Randall’s threadfin bream. Specimens of N. randalli were

The bioactive constituents of sea cucumber Holothuria atra were investigated, and four sulfated holostan-type triterpene glycosides (1–4) along with other seven know metabolites were obtained. On the basis of the extensive NMR and ESI-MS data, the structures of triterpenoid saponins were assigned as a new compound echinoside B 12-O-methyl ether (1), and known echinoside B (2), 24-dehydroechinoside

The economic expansion of estuarine mud crab Scylla olivacea necessitated for the inclusive research on its biological characteristics, especially morphological features. This study explored the gender- specific growth pattern and condition factors of S. olivacea from the coastal waters of Sundarbans, Bangladesh. A total of 360 S. olivacea were collected using a nonmechanized trap from the landing

The present study provides notes on Cocotropus roseus Day, 1875, a poorly known endemic fish from the Bay of Bengal, Eastern Indian Ocean. The morphometric data and color images are provided herein based on fresh specimens collected from Chennai, south India, its type locality, Bay of Bengal, Eastern Indian Ocean.

The jellyfish, Pelagia noctiluca is considered as one of the notorious bloom forming species in the world’s oceans due to its wide distribution, high abundance, ecological role, and also because of its negative interaction with humans. In the present study, we report the bloom of Pelagia cf. noctiluca from northeastern Arabian Sea in December 2018, identifying specimens with the use of molecular and

The present study was conducted to provide biometric data of the edible sea urchin Paracentrotus lividus along the Tunisian coastline where thirteen marine localities were selected randomly. A total of 653 individuals were collected and their metric and weight measurements were recorded. The size distribution of the different samples was determined and relative growth expressions were deduced. Data

This paper reports the occurrence of two stingray species from Andaman waters, India; the zonetail butterfly ray Gymnura zonura (Bleeker, 1852) (695 mm DW) which represents a new distributional range, and the mangrove stingray Urogymnus granulatus (Macleay 1883) (395 mm DW) which represents a rare occurrence. These occurrences suggest hidden stingray diversity in this region. Morphological descriptions

In this study, length–weight relationships were estimated for discarded trawl fish species and mean size at capture was compared with reported mean length at first maturity (Lm). Sampling was conducted in Sığacık Bay, on the Turkish coast of the central Aegean Sea, between October 2008 and April 2010 onboard a commercial trawler fishing over a depth range of 88–450 m. A total of 14,120 individuals

Sillaginids possess similar taxonomic characters, which make the specific identification difficult, and many true species may be hidden in the synonymy of wide-ranging species. There are currently 36 valid species of sand whitings in the family Sillaginidae. Thirteen valid species are reported from Indian waters and six species are reported from the Arabian Sea. Investigations into the sillaginid diversity

Length–length and length–weight relationships in various length measurement standards were estimated for dominant small pelagic fishes in the Kuroshio–Oyashio current system (Japanese sardine Sardinops melanostictus, Japanese anchovy Engraulis japonicus, chub mackerel Scomber japonicus, and spotted mackerel Scomber australasicus). Fish samples were collected from surface–midwater trawl surveys and

The coastal waters of Angola support a rich and diverse fauna. However, the ichthyofauna of the region is poorly known; the only fish species studied in detail are those with commercial importance. The main objective of the present study is to report the presence of several fish species for the first time from the coast of Angola. The records were made during a survey in the coastal area of Luanda

Although the representative species of Sesarmidaes, mudflat crab Parasesarma pictum and P. affine, are primarily herbivorous crabs, very little information is available about these transcriptomes. To identify the key genes those are responsible for the digestion systems in these crabs, we investigated transcriptomic profiles of the hepatopancreas in P. pictum and P. affine. Hundreds of unigenes in

This study reports the occurrence of xanthid crabs obtained from the gut of a commercially important species, humpback red snapper, Lutjanus gibbus sampled from coastal waters off Cochin, India. The recovered xanthid crabs were identified up to species level using standard literature and found out to be male specimens of Euxanthus exsculptus (Herbst 1790). The crabs had smooth and swollen bumps on

A Correction to this paper has been published: https://doi.org/10.1007/s41208-021-00292-6

A study was carried out to assess the economic value of juveniles of commercially important species of finfish and shellfish caught as by-catch by multiday commercial trawlers operated off the coast of Visakhapatnam, north Andhra Pradesh from January 2014 to December 2015. Juveniles of twenty species (four species of cephalopods and sixteen species of finfish) were found to dominate the trawl by-catch

580-km length marine magnetic study was performed at the Northern Marmara Shelf and the Lagoon Küçükçekmece to provide new datasets to understand the submarine structures. The distributions of the relatively complex and differentiated low and high magnetic anomalies indicate that the study area was affected by the multiple tectonic regimes. While the magnetic highs correspond with the folding structures

Sphaeromopsis sikata sp. nov. is described from intertidal habitats of South Andaman coast, Andaman Islands. Sphaeromopsis sikata sp. nov., the first record of the genus from India, is characterized by the pleotelson lateral margins not being folded ventrally and the uropodal exopod lateral margin proximal to medial smooth; distal margin is serrate with three teeth, apex concave with three setae, and

This study presents the length-weight relationships (LWRs) for six deep-sea fish species from the deep-waters of Andaman and Nicobar archipelago of India (70 29’130’’N − 120 44’ 480’’N and 920 19’ 580’’E − 930 24’ 440’’E). We employed bottom trawl using High Speed Demersal Trawl (HSDT-II CV, mesh size of 30 mm in the cod end) between March-April 2017, off the Indian coast between 295 and 650m depth