Some information on the biology of Illex coindetii Verany, 1839 (Cephalopoda, Ommastrephidae) in the South-Western Adriatic Sea (Central Mediterranean)

Ceriola, Luca; Ungaro, Nicola; Toteda, Francesco

doi:10.1016/j.fishres.2006.08.024

Cited by 16 publications

(35 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ML50 of males was calculated as 121.2 mm ML and that of females was 148.5 mm ML. The similar results observed in different parts of the Mediterranean Sea; Arvanitidis et al (2002) from the neighboring Greek Seas (ML50, males 113 mm ML; females 179 mm ML), Ceriola et al (2006) from Adriatic (ML50, males 137 mm ML; females 146 mm ML), Jereb and Ragonese (1995) from Sicilian Channel (ML50, males 120 mm ML; Females 150 mm ML) and Perdichizzi et al (2011) from Southern Tyrrhenian Sea (ML50, males 105 mm ML; Females 150 mm ML).…”

Section: Maturitysupporting

confidence: 83%

“…I. coindetii had bi-modal length frequency distribution in the first group mantle lengths showed intensity between 40 and 90 mm and in the second group were ML between 140 and 180 mm ML ( Figure 2). Also, bi-modal length distribution of I. coindetii was reported previously by Sanches et al (1998) from the Catalan Sea and by Ceriola, Ungaro, and Toteda (2006) from the Adriatic Sea. Sanchez et al (1998) reported that growth of summer spawners were faster than that of autumn spawners after hatching periods, following two distinct reproductive peaks within the year.…”

Section: Length-frequency Distributionsupporting

confidence: 77%

“…Although there were reports from other areas of the Mediterranean such as Sanchez (1995) and Sanchez et al (1998) from Catalan Sea, Jereb and Ragonese (1995) from Sicilian Channel, Ceriola et al (2006) from Adriatic, and Arvanitidis et al (2002) from Greek Seas that mature animals were observed throughout the year, in this study, there were mature animals from all year round except March. This might be the result of the limited sampling scheme of this study.…”

Section: Maturitycontrasting

confidence: 60%

“…Also since small sized animals were found throughout the year, it might be suggested that the reproduction occurs all year round with intensification in some seasons. Ceriola et al (2006) also reported that the spawning of I. coindetii in the Adriatic Sea occurred throughout the year.…”

Section: Maturitymentioning

confidence: 90%

“…I. coindetii was the most abundant at 350 m depth according to the data of this study. Although D'Onghia et al (1991) from Eastern coasts of Aegean Sea, Salman et al (1997) from Aegean Sea, and Salman and Katagan (2004) from North eastern Levant Sea reported that the fishing effort was higher at 100-200 m depths, it was also reported that fishing effort and abundance were higher at 100-200 m depths in other areas of the Mediterranean Sea such as Catalan Sea (Mangold-Wirz, 1963;Sanchez & Martin, 1993), Northern Tyrrhenian Sea (Belcari & Sartor, 1993), Southern Tyrrhenian (Perdichizzi et al, 2011), Sicilian Channel (Jereb & Ragonese, 1995), and Southern Adriatic (Ceriola et al, 2006). This vertical distribution differences between areas, and seasonal vertical difference on abundance observed in this study suggested that I. coindetii has vertical migrations depending on variations in bottom water temperature.…”

Section: Bathymetric Distributionmentioning

confidence: 96%

See 4 more Smart Citations

Untitled

Salman¹

2017

Turk. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

Samples of Illex coindetii were collected with bottom trawl net at 150, 350 and 550 m depths in the Aegean Sea (Eastern Mediterranean). Sampling was carried out monthly from May 2008 to April 2009. A total of 1415 I. coindetii individuals (551 males and 688 females and 176 unidentified sex) were collected. The length-weight relationship showed a negative allometry. There was a difference between the sexes in respect to length-weight relationships with females being larger and heavier than males. The smallest mature individual in the Aegean Sea, was observed to be 125 mm ML for females and 117 mm ML for males. The size-at maturity ML50 was calculated separately for males and females, and first maturation was reached at 164.8 mm ML for females and 139.3 mm ML for males. There were two peaks in GSI of females, one in spring and the other in autumn/early winter. Potential fecundities of mature females were between 46500 and 190000 and, there were 3000-7000 ripe eggs in both oviducts. Oocytes size groups distribution in ovary was bimodal at maturing, mature and advanced mature individuals so ovulation pattern was group-synchronous and reproductive strategy was supposed to be intermittent terminal spawning.

show abstract

Section: Maturitysupporting

confidence: 83%

Section: Length-frequency Distributionsupporting

confidence: 77%

Section: Maturitycontrasting

confidence: 60%

Section: Maturitymentioning

confidence: 90%

Section: Bathymetric Distributionmentioning

confidence: 96%

See 3 more Smart Citations

Untitled

Salman¹

2017

Turk. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

show abstract

Influences of environmental variability on the population structure and distribution patterns of the short-fin squid Illex coindetii (Cephalopoda: Ommastrephidae) in the Eastern Ionian Sea

Lefkaditou

Politou

Palialexis

et al. 2008

Essential Fish Habitat Mapping in the Mediterranean

View full text Add to dashboard Cite

Influences of environmental variability on the population structure and distribution patterns of the short-fin squid Illex coindetii (Cephalopoda: Ommastrephidae) in the Eastern Ionian Sea

et al. 2008

View full text Add to dashboard Cite

Illex coindetii is the most common benthic ommastrephid squid exploited by bottom trawl in the Mediterranean Sea. A recent study examining trends in population metrics based on data from the International Bottom Trawl Surveys in the Mediterranean (MEDITS) has shown an increasing trend in average lengths of I. coindetii sampled in the eastern Ionian Sea, suggesting that this is possibly due to the thermoaline circulation reversal and the warming of the entire water column in this area after 1998 because of the Eastern Mediterranean Transient (EMT). In this study, spatial and inter-annual variability of the population structure and the distribution patterns of I. coindetii in the eastern Ionian is investigated in relation to environmental characteristics. Datasets used include demographical and biological data derived from the MEDITS surveys carried out during the summers of 1994-2006 and environmental parameters obtained through CTD sampling and remotely sensed imagery. Analyses performed include descriptive methods like the length frequency analyses and GIS mapping of standardized densities, as well as habitat modelling of presence data for different life stages of I. coindetii (based on generalized additive models and maximum entropy). An increasing trend in frequency of occurrence and density indices for all life stages has been detected during the studied period, being more evident after 1999. At the same time a temporal shift in seasonal maturation was also evidenced, coinciding to the warming of eastern Ionian waters due to EMT effects. Spawning aggregations occurred steadily on the upper slope of the relatively more protected area west of the Kefalonia Island, extending also over the lower shelf of the Patraikos Gulf in summers with lower upwelling activity. The inter-annual variability observed in the location of main recruitment areas could be related to mechanisms affecting post-hatching dispersal during late winter and spring, when maximum intensity of surface mesoscale activity has been observed. Depth was found the principal variable associated with the distribution of I. coindetii in the study area. Anomalies of surface temperature and chlorophyll-a, as well as distances from coast and thermal fronts were also selected for the final set of response variables without, however, showing any clear trend particularly in the case of recruits. The results of this study highlight the importance of a more comprehensive study of both environmental processes and I.

show abstract

Some information on the biology of Illex coindetii Verany, 1839 (Cephalopoda, Ommastrephidae) in the South-Western Adriatic Sea (Central Mediterranean)

Cited by 16 publications

References 15 publications

Untitled

Untitled

Influences of environmental variability on the population structure and distribution patterns of the short-fin squid Illex coindetii (Cephalopoda: Ommastrephidae) in the Eastern Ionian Sea

Influences of environmental variability on the population structure and distribution patterns of the short-fin squid Illex coindetii (Cephalopoda: Ommastrephidae) in the Eastern Ionian Sea

Contact Info

Product

Resources

About