Reproductive biology of pink cuttlefish Sepia orbignyana in the Aegean Sea (eastern Mediterranean)

Dursun, Derya; Eronat, Elizabeth Grace Tunka; Akalin, Meryem; Salman, Mehmet

doi:10.3906/zoo-1209-22

Cited by 12 publications

(13 citation statements)

References 11 publications

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“…In general, our results suggest that size (i.e. growth) was not proportional to weight, in accordance with the findings reported in other Atlantic (Rodríguez-Marín, 1993;Regueira et al, 2013) and Mediterranean marine systems (Merella et al, 1997;Conides et al, 2006;Vafidis et al, 2008;Guijarro et al, 2012;Dursun et al, 2013). Allometric growth patterns are common in short-lived species such as cephalopods, for example O. vulgaris (Merella et al, 1997;Quetglas et al, 1998) or Loligo fobersi (Pierce et al, 1994), but also in deep-water pandalids (Vafidis et al, 2008), possibly as an adaptation to changes in benthic habitats (Company and Sardà, 2000).…”

Section: Speciessupporting

confidence: 93%

Length–weight relationships for 22 crustaceans and cephalopods from the Gulf of Cadiz (SW Spain)

Torres

Vila

Silva

et al. 2017

Aquat. Living Resour.

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Life history traits are available for many fish species in different regions, but less so for invertebrates such as cephalopods and crustaceans, though, they are increasingly needed for implementing an ecosystem-based approach. Recent food web modelling in the Gulf of Cadiz has identified invertebrates as keystone groups. However, information on life history traits of such groups remains incomplete in this region. To fill this knowledge gap, we report length-weight relationships for 12 cephalopods and 10 crustaceans collected in the Gulf of Cadiz from 2009 to 2013. This study reports, for the first time, life history traits of nine species in the area (Chlorotocus crassicornis, Pasiphaea sivado, Plesionika heterocarpus, Plesionika martia, Processa canaliculata, Solenocera membranacea, Allotheutis media, Sepia orbignyana and Sepietta oweniana). For each species, length-weight relationships, minimum and maximum lengths, mean weights, and depth ranges are presented. Overall, the results revealed that all species showed negative allometric growth (hypoallometry), except P. sivado, the only species showing an isometric growth pattern. We expect that this study will contribute to link sustainable fisheries with biodiversity conservation goals enabling the implementation of operational ecosystem-based management in the Gulf of Cadiz.

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Section: Speciessupporting

confidence: 93%

Length–weight relationships for 22 crustaceans and cephalopods from the Gulf of Cadiz (SW Spain)

Torres

Vila

Silva

et al. 2017

Aquat. Living Resour.

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“…In the present study, males and females were at similar sizes (42 mm ML for males and 41 mm ML for females) both for size at maturity or for length at maturity of the population (ML 50 ). A similar phenomena was reported for S. officinalis -the species in which males are generally larger than females where no sexual dimorphism was found in the Aegean Sea (Önsoy and Salman, 2005), but such difference was found in S. obignyana (Dursun et al, 2013). Adult animal size in the Aegean Sea was smaller than in the West Mediterranean (MangoldWirz, 1963), Ionian Sea (Tursi and D'Onghia, 1992) and Adriatic Sea (Ciavaglia and Manfredi, 2009).…”

Section: Discussionsupporting

confidence: 47%

“…Potential fecundity (PF) of females was calculated as the sum of the oocytes in the ovary plus the eggs in the oviduct. Because in preserved stage V ovaries, the oviductal eggs often torn as a result of the separation during counting in the laboratory, we used Dursun et al (2013) methodology, and counted fresh materials oviduct eggs on board.…”

Section: Methodsmentioning

confidence: 99%

Untitled

Salman¹

2015

Turk. J. Fish. Aquat. Sci.

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Reproductive biology of Mediterranean cuttlefish Sepia elegans has been studied in the Aegean Sea from total of 924 animals (432 males, 492 females) caught during monthly trawl surveys from May 2008 to April 2009. Cuttlefishes were measured, weighed, maturity assessed, and reproductive systems were removed and investigated in the lab. The size at maturity (ML 50 ) were 42 mm (males) ML and 41mm ML (females) respectively. Seasonal changes in a gonadosomatic index suggest extended reproductive period of the population with two peaks of spawning; once in July and in October. The ovulation pattern of S. elegans is asynchronous and spawning occurs continuously. The female potential fecundity was 513-1190. The spermatophore counts for mature males ranged 167-486. Size of adult individuals in the East Mediterranean was smaller than that in the Western Mediterranean probably due to lower productivity and high temperatures (hence expenses on metabolism).

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“…Gabr et al ., (1998) in Suez canal observed that S. dollfusi have two beaks in January-April also S. pharaonis attains two beaks in March-June Onsoy and Salman (2005) observed that the spawning period of S. officinalis covers the whole year with two maximum peaks in March and June. Ghazvineh et al, 2012 attains two peaks for S. Pharaonis in May and June Persian Gulf in Iran and Dursun et al,( 2013 )found that the mean monthly female GSIs showed two annual peaks, in spring (May) in addition in autumn (November) for pink cuttlefish Sepia orbignyana in the Aegean Sea. Our results did not conform to Akyol et al, (2011) recorded one beak of Sepia officinalis and varied in spawning seasons.…”

Section: Gonadosomatic Index (Gsi)mentioning

confidence: 97%

“…Moreover, a correct identification of mature individuals in the population is thus a crucial step for a precise estimation of spawning stock biomass, and finally for assessing the status of the stock and establishing harvest level. Although, there are some data, regarding reproductive biology of cuttlefish all over the world (Önsoy and Salman, 2005;Ghazvineh et al, 2012;Dursun et al, 2013;and Salman, 2015), there is no any histological studies on Sepia savignyi in the Gulf of Suez. Few studies have contrasted the morphological maturity scale with the histological analysis in other cephalopod species such as squid loligo vulgaris Sauer and Lipinski.…”

Section: Introductionmentioning

confidence: 99%

Some Biological Aspect and Gonads Histology of Sepia savignyi (Blainville, 1827), in the Gulf of Suez, Egypt

Amin¹,

Elhalfawy²,

Khouraiba³

et al. 2019

Egypt. J. of Aquatic Biolo. and Fish.

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This work is the first histological description of gonad maturation of Sepia savignyi and the beginning of future research on its basic biology. A total of 452 samples, ranged in dorsal mantle length from 3.9 to 29 cm with average 16.35 + 1.50 and total weight ranged from 19 to 1826.8 gm, with average 606.79 + 110.7, of which 269, female and 183 male were examined between September 2014 to May 2015 obtained from the Gulf of Suez, Egypt. The size at first sexual maturity (DML 50) was 11.9 and 8.4 cm for female and male, respectively. The Gonadosomatic indices show that the females and males have two peaks in the year-round spawning period the first is in December (4.1 %) and (2.4%) and the second is in April (3.5%) and (2.2%) for female and male, respectively. Five stages of gonad maturation were established for the female and male, namely immature (I), maturing (II), mature (III), spawning (IV) and spent (V) based on macroscopic examination. Histological examination showed that each ovary and testis had various stages of oocyte and spermatocytes. Oogenesis of oocyte demonstrated seven stages of maturity in females as oogonia, early primary oocyte, late primary oocyte, previtellogenic oocyte, vitellogenic Oocyte, advanced vitellogenic oocyte and ripe oocytes. Spermatogenesis of testes divided into spermatogonia, primary and secondary spermatocytes, spermatid and spermatozoa.

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Reproductive biology of pink cuttlefish Sepia orbignyana in the Aegean Sea (eastern Mediterranean)

Cited by 12 publications

References 11 publications

Length–weight relationships for 22 crustaceans and cephalopods from the Gulf of Cadiz (SW Spain)

Length–weight relationships for 22 crustaceans and cephalopods from the Gulf of Cadiz (SW Spain)

Untitled

Some Biological Aspect and Gonads Histology of Sepia savignyi (Blainville, 1827), in the Gulf of Suez, Egypt

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