The effect of fishing on growth of the clam <i>Chamelea gallina</i> (Bivalvia: Veneridae) from the Turkish Black Sea coast

Dalgıç, Göktuğ; Okumuş, İbrahım; Karayücel, Sedat

doi:10.1017/s0025315409000939

Cited by 14 publications

(14 citation statements)

References 12 publications

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“…Dredge fisheries have been shown to cause a decrease in maximum shell sizes in other clam populations. Both Moura et al (2013) and Dalgiç et al (2010) documented differences in growth and body size between fished and non-fished clam populations; however, the differences documented in Moura et al (2013) were confounded with a latitudinal gradient in growth conditions such that the unfished population came from warmer locations that were more conducive to faster growth and larger asymptotic size in the species (Dosinia exoleta) they were studying. This demonstrates the difficulty in distinguishing the relative influence of environment versus fishing in the absence of manipulation or controlled experiments.…”

Section: Discussionmentioning

confidence: 99%

Fishing and bottom water temperature as drivers of change in maximum shell length in Atlantic surfclams (Spisula solidissima)

Munroe

Narváez

Hennen

et al. 2016

Estuarine, Coastal and Shelf Science

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Maximum shell length of Atlantic surfclams (Spisula solidissima) on the Middle Atlantic Bight (MAB) continental shelf, obtained from federal fishery survey data from 1982-present, has decreased by 15-20 mm. Two potential causes of this decreasing trend, fishery removal of large animals and stress due to warming bottom temperatures, were investigated using an individualbased model for post-settlement surfclams and a fifty-year hindcast of bottom water temperatures on the MAB. Simulations showed that fishing and/or warming bottom water temperature can cause decreases in maximum surfclam shell length (body size) equivalent to those observed in the fished stock. Independently, either localized fishing rates of 20% or sustained bottom temperatures that are 2°C warmer than average conditions generate the observed decrease in maximum shell length. However, these independent conditions represent extremes and are not sustained in the MAB. The combined effects of fishing and warmer temperatures can generate simulated length decreases that are similar to observed decreases. Interannual variability in bottom water temperatures can also generate fluctuations in simulated shell length of up to 20 mm over a period of 10 to 15 years. If the change in maximum size is not genotypic, simulations also suggest that shell size composition of surfclam populations can recover if conditions change; however, that recovery could take a decade to become evident.

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Section: Discussionmentioning

confidence: 99%

Fishing and bottom water temperature as drivers of change in maximum shell length in Atlantic surfclams (Spisula solidissima)

Munroe

Narváez

Hennen

et al. 2016

Estuarine, Coastal and Shelf Science

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“…However, this was unfeasible with D. exoleta, since in most acetate peels the growth rings in the umbonal region were absent or very difficult to discern. Similarly, in C. gallina, the growth bands in the umbonal region were only observed in a limited number of individuals, making this method inappropriate for ageing this species (Dalgiç et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Age and growth in three populations of Dosinia exoleta (Bivalvia: Veneridae) from the Portuguese coast

2013

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The present study aimed at estimating the age and growth in three populations of Dosinia exoleta from the Portuguese coast (Aveiro in the north, Setúbal in the southwest and Faro in the south). Two techniques were compared to ascertain the most suitable method for ageing D. exoleta. Growth marks on the shell surface and acetate peel replicas of sectioned shells were the techniques applied. Two hypotheses were tested: growth parameters present latitudinal variation along the Portuguese coast; growth parameters are influenced by the fishing exploitation. Shell surface rings proved inappropriate for ageing this species, whereas acetate peels provided realistic estimates of the von Bertalanffy growth parameters (K, L ? and t 0 ). A latitudinal gradient in growth rate was detected, with a clear southward increase in the growth coefficient (K) of D. exoleta (Faro [ Setúbal and Aveiro) indicating that warmer waters in southern Portugal provide optimal conditions for the growth of this species. Fishing exploitation in northern Portugal targets larger individuals and leaves behind a younger population of smaller individuals, decreasing the asymptotic shell length (L ? ) of D. exoleta from Aveiro. The overall growth performance was compared among populations of D. exoleta and with other venerid species worldwide.

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“…C. gallina has a wide area of spread including the East Atlantic Ocean coasts, the British Isles, Norway, Portugal, Morocco, Canary Islands, the Adriatic Sea, the Black Sea and the Mediterranean (Fischer et al, 1987;Deval, 2001;Çolakoğlu and Tokaç, 2010;Biondi and Piero, 2012). This species is found intensively in the Western Black Sea and the Marmara Sea in Turkey (Dalgıç et al, 2006;Dalgıç and Karayücel, 2007;Dalgıç et al, 2009;Çolakoğlu and Tokaç, 2010). The production of mollusca was 5.988.076 tons in the world in 2016 (FAO, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…It was 34,941 tons in 2017, while the highest production of this species was in 2006 (49.610 tons) and in 2007 (48.549 tons) (BSGM, 2018). C. gallina, despite living in all the coasts of Turkey, the existing production is carried out from the Black Sea (Dalgıç et al, 2009;TUİK, 2016).…”

Section: Introductionmentioning

confidence: 99%

A preliminary study on the traits of Chamelea gallina (Linnaeus, 1758) in the Gulf of Antalya, Mediterranean Coast of Turkey (Levantine Sea)

Tanrıverdi

Gökoğlu

Korun

2019

AA: ASC

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This study aimed to examine on some properties and to draw attention to why it cannot create an intensive stock amount of Chamelea gallina (Linnaeus, 1758) in the Gulf of Antalya in the Mediterranean coast of Turkey, Levantine Sea. Specimens of C. gallina displayed total shell legths of 6 to 32 mm, mean 14.5 mm and total weights of 0.1 to 11.44 g, mean 1.82 g. The total shell length and total weight relationship of C. gallina was calculated as TW =0.3333 * TSL 2.9894 (R² =0.9850). The mean meat yield was found as 12.10±0.9264%. A small number of C. gallina samples were collected. The majority of the collected striped venus were determined as empty shell. It was observed that the razorfish (Xyrichtys novacula) were fed with C. gallina during research. Finally, these results may draw attention the reasons why this species cannot form an intensive stock amount. It is thought that the empty shells of the striped venus can be caused from feeding of the razorfish (X. novacula) with C. gallina and environmental factor changes.Keywords: Chamelea gallina; length; weight; meat yield; mediterranean

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The effect of fishing on growth of the clam Chamelea gallina (Bivalvia: Veneridae) from the Turkish Black Sea coast

Cited by 14 publications

References 12 publications

Fishing and bottom water temperature as drivers of change in maximum shell length in Atlantic surfclams (Spisula solidissima)

Fishing and bottom water temperature as drivers of change in maximum shell length in Atlantic surfclams (Spisula solidissima)

Age and growth in three populations of Dosinia exoleta (Bivalvia: Veneridae) from the Portuguese coast

A preliminary study on the traits of Chamelea gallina (Linnaeus, 1758) in the Gulf of Antalya, Mediterranean Coast of Turkey (Levantine Sea)

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