Distribution patterns and population structure of Illex coindetii (Cephalopoda: Ommastrephidae) in the Southern Tyrrhenian Sea: Historical series of 14 years trawl survey

Perdichizzi, Anna; Pirrera, Laura; Giordano, Daniela; Perdichizzi, F.; Busalacchi, Barbara; Profeta, Adriana; Bottari, Teresa; Rinelli, Paola

doi:10.1016/j.fishres.2011.03.001

Cited by 10 publications

(11 citation statements)

References 6 publications

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“…The persistent hotspots of young‐of‐the‐year abundances identified showed bathymetric distributions that are generally consistent with previous knowledge in the Mediterranean (Busalacchi et al, ; Carlucci et al, ; Damalas, Maravelias, Katsanevakis, Karageorgis, & Papaconstantinou, ; Perdichizzi et al, ; Tserpes, Maravelias, Pantazi, & Peristeraki, ). The decapod P. longirostris was the exception, with a distribution in the study area deeper than in the central and eastern Mediterranean (Carlucci et al, ; Politou, Tserpes, & Dokos, ).…”

Section: Discussionsupporting

confidence: 89%

Essential fish habitats and hotspots of nekto‐benthic diversity and density in the western Mediterranean

Tugores

Ordines

Guijarro

et al. 2019

Aquatic Conservation

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1. Since the 1990s, most currently assessed Mediterranean nekto-benthic stocks have been exploited above maximum sustainable yield and have declined. This study explores the co-occurrence of essential fish habitats for the most important nekto-benthic resources exploited by bottom-trawl fisheries in the western Mediterranean and areas of importance for nekto-benthic communities. 2. Fishery-independent data obtained from Mediterranean scientific bottom-trawl surveys were used to identify persistent hotspots of recruitment for the most important nekto-benthic species around the Iberian Peninsula and the Balearic Islands between 2002 and 2016, as an indicator of their essential fish habitats. Likewise, hotspots of nekto-benthic community diversity and density were also determined, as an estimate of key areas for nekto-benthic communities. 3. Areas of overlap of persistent hotspots of recruitment and of community species richness and density were mainly found on the deep shelf and the upper slope (100-200 m and 200-500 m deep respectively). 4. These overlapping areas could be of particular interest in the development of fishery management plans aiming to implement an ecosystem approach to fisheries. Protection, through temporary or permanent closures, of the overlapping areas identified would contribute to improving both the sustainable exploitation of the main target species of bottom-trawl fisheries and the conservation of nekto-benthic communities.

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Section: Discussionsupporting

confidence: 89%

Essential fish habitats and hotspots of nekto‐benthic diversity and density in the western Mediterranean

Tugores

Ordines

Guijarro

et al. 2019

Aquatic Conservation

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“…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: 77%

“…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%

“…This might be the result of the limited sampling scheme of this study. According to Perdichizzi et al (2011), although no post-spawning specimen were found during the entire period of sampling, it can be said that spawning could occur throughout the year because of the findings of mature animals (even in low numbers) all year round. Besides that, there were definitely two reproduction peaks observed, one in early summer and the other in autumn.…”

Section: Maturitymentioning

confidence: 99%

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Salman¹

2017

Turk. J. Fish. Aquat. Sci.

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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.

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“…Open southern Tyrrhenian Sea is considered as an important spawning area for the swordfish (Xiphias gladius; Romeo et al, 2009) and the Atlantic blue fin tuna (Sinopoli et al, 2004). Moreover, a previous study showed that it is a relevant nursery area for the short-finned squid Illex coindetii (Perdichizzi et al, 2011), which represents an important prey for several adults fish species.…”

Section: Discussionmentioning

confidence: 99%

Different key roles of mesoscale oceanographic structures and ocean bathymetry in shaping larval fish distribution pattern: A case study in Sicilian waters in summer 2009

Cuttitta

Quinci

Patti

et al. 2016

Journal of Sea Research

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Distribution patterns and population structure of Illex coindetii (Cephalopoda: Ommastrephidae) in the Southern Tyrrhenian Sea: Historical series of 14 years trawl survey

Cited by 10 publications

References 6 publications

Essential fish habitats and hotspots of nekto‐benthic diversity and density in the western Mediterranean

Essential fish habitats and hotspots of nekto‐benthic diversity and density in the western Mediterranean

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Different key roles of mesoscale oceanographic structures and ocean bathymetry in shaping larval fish distribution pattern: A case study in Sicilian waters in summer 2009

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