Diet composition and feeding intensity of horse mackerel, Trachurus trachurus (Osteichthyes: Carangidae) in the eastern Adriatic

Jardas, Ivan; Šantić, Mate; Pallaoro, Armin

doi:10.1007/s00227-003-1281-7

Cited by 61 publications

(54 citation statements)

References 8 publications

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“…previously reported has shown crustacea as predominant diet constituent (Jardas et al, 2004), Trachurus spp. juveniles of this study were fed with shrimp freshly harvested thereafter freeze stored (~ -18°C).…”

Section: Feeding Of Samplesmentioning

confidence: 88%

“…Given that high feeding intensity of Trachurus spp. has been reported at night and during early mornings (Jardas et al, 2004), feed to samples ad libitum (of this study) were administered at scheduled times per day on different areas of evenly on water surface to allow for equal feed distribution/reception.…”

Section: Feeding Of Samplesmentioning

confidence: 99%

“…Besides, the feeding data about Trachurus spp. already generated at Mediterranean Basin has been largely based on (feed/food) composition compared to (feeding) intensity (Jardas et al, 2004). In addition, the management of Trachurus spp.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the Acclimatization of Pelagic Fish Species Juveniles in a Closed Environment: An Atlantic Horse Mackerel Case Study

Okpala¹,

Vitale²

2017

American Journal of Animal and Veterinary Sciences

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Section: Feeding Of Samplesmentioning

confidence: 88%

Section: Feeding Of Samplesmentioning

confidence: 99%

See 1 more Smart Citation

On the Acclimatization of Pelagic Fish Species Juveniles in a Closed Environment: An Atlantic Horse Mackerel Case Study

Okpala¹,

Vitale²

2017

American Journal of Animal and Veterinary Sciences

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“…In many studies, the feeding concentration increases before and after the reproduction period (Sirotenko and Istomin, 1978;Argillier et al, 2003;Jardas et al, 2004) and decreases shortly before the spawning period (Jardas and Pallaoro, 1991;Dulcic, 1996;Fordham and Trippel, 1999;Jardas et al, 2004). This situation is related to the fact that the gonads press the stomach as they enlarge and thus take up more space in the body (Golikatte and Bhat, 2011) and to the fact that physical variations occur in the fish during the reproductive period (Jardas et al, 2004). The data obtained in this study note that the feeding concentration increases before the reproduction period, declines before spawning and increases again after that period.…”

Section: The Relationship Between the Reproduction Period And The Feementioning

confidence: 99%

Untitled

Özyurt¹,

Yesilcimen²,

Mavruk³

et al. 2017

Turk. J. Fish. Aquat. Sci.

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This study was performed with the purpose of determining the main feeding aspects and the reproductive period of Saurida undosquamis from January to December 2010. The samples were obtained by trawl operations conducted in monthly intervals. The result regarding the feeding reveals that the most important feeding group is the teleost. The IRI values (20621,06) for the teleost are much higher than those determined for crustaceans and cephalopods (31,66 and 0,02, respectively). The relative importance of the clupeiforms among the teleosts was the highest (Clupeidae:1890.13; Engraulidae: 910.06). In addition, while the sex and length were not significant predictors of the feeding groups, their variation, depending upon the month, was important. In general, the pelagic and native species were dominant in feeding preference. However, feeding with the demersal and indopacific species was more common in October and November. Moreover, the prey length increased with the predator length. The reproductive activities of this species increased during the warm months, and there was a negative correlation between the spawning activities and the feeding intensity.Key words: Saurida undosquamis, feeding, spawning period, prey-predator length relationship. İskenderun Körfezi'nde Dağılım Gösteren S. undosquamis'lerin Beslenme Özelliklerinin İncelenmesi ve Beslenmenin Üreme Dönemi ile İlişkisi ÖzetBu çalışma, Ocak 2010 ile Aralık 2010 tarihleri arasında, S.undosquamis'in beslenme özellikleri ve üreme döneminin belirlenmesi amacıyla gerçekleştrilmiştir. Örnekler, aylık olarak yapılan trol operasyonları ile elde edilmiştir. Elde edilen sonuçlar, en önemli besin grubunun teleost olduğunu göstermiştir. Teleostların IRI değeri (20621,06), crustacean ve cephalopodların IRI değerlerinden (sırasıyla 31.66 and 0.02) oldukça yüksek bulunmuştur. Teleostlar içerisinde en yüksek IRI değerleri ise clupeiformes grubunda gözlenmiştir (Clupeidae:1890.13; Engraulidae: 910.06). Ayrıca, ana besin grubu tercihinde boy ve eşeyin etkili olmadığı, ancak zamana bağlı olarak bir değişim olduğu saptanmıştır. Besin tercihinde yılın genelinde zoocoğrafik orjin olarak yerli, habitat olarak ise pelajik türlerle beslenme söz konusuyken, Ekim ve Kasım aylarında demersal ve indopasik türlerle beslenmenin ağırlık kazandığı saptanmıştır. Ayrıca pradatör boyu büyüdükçe prey boyunda artış olduğu saptanmıştır. Bu türün üremesinin, yılın sıcak döneminde yoğunlaştığı ve üreme dönemi ile beslenme yoğunluğu arasında ters bir ilişki olduğu tespit edilmiştir.Anahtar Kelimeler: Saurida undosquamis, beslenme, üreme periyodu, prey-predator boy ilişkisi.

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“…The values of the feeding index (FI) were calculated for each month (Jardas et al, 2004) to determine the feeding intensity. The feeding index was calculated using the equation…”

Section: Methodsmentioning

confidence: 99%

Untitled

Özyurt¹,

Mavruk²,

Kiyağa³

2012

Turk. J. Fish. Aquat. Sci.

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This study examines temporal changes and predator size-dependent changes in the important dietary groups and feeding intensity of pikeperch Sander lucioperca. Monthly experimental fishing operations were conducted for sampling purposes using gillnets with different mesh sizes between July 2009 and June 2010. The results showed significant changes in the important dietary items as a function of predator size. Diptera and mysids were the most important groups for pikeperch smaller than 19 cm, whereas fish were most important for pikeperch larger than 19 cm. The important dietary items also varied significantly over time. The most important dietary groups were mysids during December, January and February; diptera during March and April; and teleosts during the other months. The feeding intensity of pikeperch peaks in October and March and then progressively decreases between October and February. The decrease in feeding intensity was related to the reproductive period.

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Diet composition and feeding intensity of horse mackerel, Trachurus trachurus (Osteichthyes: Carangidae) in the eastern Adriatic

Cited by 61 publications

References 8 publications

On the Acclimatization of Pelagic Fish Species Juveniles in a Closed Environment: An Atlantic Horse Mackerel Case Study

On the Acclimatization of Pelagic Fish Species Juveniles in a Closed Environment: An Atlantic Horse Mackerel Case Study

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