A5003387479- Cephalopods and Marine Biology
- Marine and fisheries research
- Marine Biology and Ecology Research
- Marine Bivalve and Aquaculture Studies
- Isotope Analysis in Ecology
- Parasite Biology and Host Interactions
- Crustacean biology and ecology
- Identification and Quantification in Food
- Neuroendocrine regulation and behavior
- Marine Ecology and Invasive Species
- Neurobiology and Insect Physiology Research
- Genetic diversity and population structure
- Marine animal studies overview
- Ichthyology and Marine Biology
- Insect and Arachnid Ecology and Behavior
- Chemical synthesis and alkaloids
- Veterinary Pharmacology and Anesthesia
- Turtle Biology and Conservation
- Leech Biology and Applications
- Wildlife Ecology and Conservation
- Invertebrate Taxonomy and Ecology
- Orthodontics and Dentofacial Orthopedics
- Marine Biology and Environmental Chemistry
- Evolution and Paleontology Studies
- Animal Ecology and Behavior Studies
Istituto Superiore per la Protezione e la Ricerca Ambientale
2009-2021
Joint Research Centre
2013-2015
Istituto Centrale per la Ricerca Scientifica e Tecnologica Applicata al Mare
2006-2013
National Research Council
2003
Institute of Rural Management Anand
2000
Azienda USL di Pescara
1997
Some 290 species of squids comprise the order Teuthida that belongs to molluscan Class Cephalopoda. Of these, about 30–40 squid have substantial commercial importance around world. Squid fisheries make a rather small contribution world landings from capture relative fish, but proportion has increased steadily over last decade, with some signs recent leveling off. The present overview describes all globe. main ecological and biological features exploited stocks, key aspects management are...
Globally, cephalopods support large industrial-scale fisheries and small-scale to partly large-scale local artisanal fisheries. They are of increasing economic importance as evidenced by the rapid rise in their global landings from 1950 2014. Cephalopods sensitive environmental variability climate change many if not all species show wide fluctuations abundance. This is most evident ommastrephid nerito-oceanic squid since life cycle associated with boundary currents that changing change. The...
Age and growth rates of the Mediterranean short-finned squid Illex coindetii (Ommastrephidae) were studied using statoliths from 704 specimens collected during trawl surveys within Strait Sicily in April October–November 1995. In both samples, almost whole ontogenetic spectrum was present, juveniles to spent adults. Most captured had hatched between October December 1994 (autumn–winter group, AW), whereas most May July 1995 with a peak June (spring–summer SS). AW did not exceed 240 days...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 253:197-208 (2003) - doi:10.3354/meps253197 Embryonic life of loliginid squid Loligo vulgaris: comparison between statoliths Atlantic and Mediterranean populations R. Villanueva1,*, A. Arkhipkin2, P. Jereb3,8, E. Lefkaditou4, M. Lipinski5, C. Perales-Raya6, J. Riba1, F. Rocha7 1Institut de Ciències del Mar...
INTRODUCTION The genus Illex is likely to constitute a large portion of the annual world ommastrephid squid catches (Roper et al, 1984), even though specific official statistics are difficult obtain. broad-tail short-fin coindetii widespread species ranging from western eastern Atlantic al., 1984) and east through whole Mediterranean Sea (Mangold & Boletzky, 1987). Usually by-catch important fisheries, it caught mainly by trawlers. Although its economic value lower than that other (i.e....
Cephalopods collected during the International Indian Ocean Expedition (IIOE; 1959–1965) and preserved at Smithsonian Institution Oceanographic Sorting Center were analysed. This present work reports on squids of Loliginidae. A total 378 specimens Loliginids was identified: Loligo chinensis, duvaucelii, edulis, singhalensis, (?) sumatrensis, Loliolus hardwickei, Sepioteuthis lessoniana. systematic description is provided for each species, as well its geographic distribution. Extensive...
First observations on reproduction of Neorossia caroli from the southern Sardinian sea are reported, based analyses an egg clutch and specimens collected by bottom trawl sandy muddy grounds. The clutch, consisting 13 white eggs 9 mm length with embryos at advanced developmental stage, was found 1200 m depth, attached to a piece hard substrate. Adult were in depth range between 400 1600 metres. DNA sequences indicated that embryos, spermatangia adults belonged same species, carol bobtail...
Several aspects of the biology Opisthoteuthis calypso were studied based on 38 individuals (23 males, 14 females and 1 indeterminate) retrieved from bottom trawls fished at 871 to 1420 m depth in Sardinian Channel (central western Mediterranean). Data full maturity are presented for first time this species. Information distribution, size, structure fecundity both sexes is provided, biological characteristics samples compared those other Mediterranean Atlantic samples. Morphological...
An unusual finding of Sepietta oweniana egg clutch at 544 m depth is described within an updating study the reproductive aspects species in Sardinian waters. Egg identity was determined by genetic analysis and morphological biometrical data eggs, embryos one newly hatched specimen are reported discussed. Illustrations spermatophores spermatangia photographic material also included. Data on bathymetric distribution sexual maturity compared with already available for other geographical areas...
The male reproductive system of the bobtail squid Neorossia caroli (Cephalopoda: Sepiolidae) is described in detail, based on observations 90 mature males caught from 500 to 1600 m depth Sardinian waters (western Mediterranean Sea). Reproductive organs specimens accounted for up 6% total body weight. Of this, 70% was represented by spermatophoric complex. Up 83 spermatophores were found inside Needham's sac. Mean spermatophore length 16.7 mm. Sperm mass, cement body, and ejaculatory...
In this paper the morphological variability observed in hectocotyli of Sepietta oweniana specimens caught Sardinian seas (central western Mediterranean) is reported and measured. Atypical variants from normal hectocotylus are described illustrated. DNA sequencing with both typical atypical hectocotylization shows no genetic differences. The percentage occurrence possible causes origin phenomenon briefly discussed.
Abstract A specimen of the rare squid genus Octopoteuthis (Cephalopoda: Octopoteuthidae) from 1600 m in Sardinian Channel (central western Mediterranean) is described. Meristic and morphological data are provided. The was a spent female details reproductive system implanted spermatangia reported. Genetic analysis this comparison with those available for species were carried out. Due to issues associated taxonomy Octopoteuthis, it not possible identify level. discussed. Keywords:...
Microstructural prominent discontinuities (checks) were observed within the statoliths of short-finned squid Illex coindetii from Strait Sicily. Two hundred and forty-two pairs extracted specimens (52–175 mm mantle length, ML) sampled during autumn 1995 analysed. Beside check delimiting postnuclear zone, up to four peripheral checks detected in zone. The occurrence immature was low (5–15%), whereas 80–95% mature had checks. mean number males females did not differ significantly (1.53–1.68...