The Indo-Pacific oyster<i>Spondylus spinosus</i>Schreibers, 1793 in the Eastern Mediterranean Sea: reproductive features

Shabtay, Ateret; Rilov, Gil; Benayahu, Yehuda

doi:10.1080/13235818.2015.1007534

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…A previous study on the reproduction cycle of S. spinosus from this area suggested a spawning period during the summer months (Shabtay et al 2015 ) while several species in the genus Spondylus were reported to settle 2–3 months after fertilization (Loor et al 2016 ). The dominance of small individuals during the spring (Fig.…”

Section: Discussionmentioning

confidence: 88%

Invading bivalves replaced native Mediterranean bivalves, with little effect on the local benthic community

et al. 2022

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The construction of the Suez Canal connected the Red Sea and the Mediterranean Sea, which allowed rapid marine bio-invasion. Over the last century, several bivalve species have invaded the Levantine basin, yet their distribution and impact on the benthic community have not been thoroughly studied. Large-scale benthic surveys along the rocky substrate of the Israeli Mediterranean coastline indicate that invading bivalves, such as Spondylus spinosus , Brachidontes pharaonis, and Pinctada radiata , now dominate the rocky environment, with densities of tens to hundreds of individuals per m 2 . No native bivalve specimens were found in any of the transects surveyed. The small-scale ecological effects of the established invading populations on the benthic community were examined over a year using an in-situ exclusion experiment where all invading bivalves were either physically removed or poisoned and kept in place to maintain the physical effect of the shells. Surprisingly, the experimental exclusion showed a little measurable effect of bivalve presence on the invertebrate community in close vicinity (~ 1 m). Bivalve presence had a small, but statistically significant, effect only on the community composition of macroalgae, increasing the abundance of some filamentous macroalgae and reducing the cover of turf. The generally low impact of bivalves removal could be due to (1) wave activity and local currents dispersing the bivalve excreta, (2) high grazing pressure, possibly by invading herbivorous fish, reducing the bottom-up effect of increased nutrient input by the bivalves, or (3) the natural complexity of the rocky habitat masking the contribution of the increased complexity associated with the bivalve’s shell. We found that established invading bivalves have replaced native bivalve species, yet their exclusion has a negligible small-scale effect on the local benthic community. Supplementary Information The online version contains supplementary material available at 10.1007/s10530-022-02986-1.

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Section: Discussionmentioning

confidence: 88%

Invading bivalves replaced native Mediterranean bivalves, with little effect on the local benthic community

et al. 2022

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“…In the eastern Mediterranean and in the GOE/A, bivalve species with overlapping distribution and habitats were sampled (Kleemann, 1990;Mienis et al, 1993;Galil et al, 2013;Shabtay et al, 2015;Diga et al, 2022). At the Red-Sea coral reef, P. spondyloideum and L. simplex share the same habitat, burrowing inside live coral hosts, and often can be found adjacent to each other in the same host colony (T. Amit and G. Yahel, personal observations).…”

Section: Modulation Of Picoplankton Capturementioning

confidence: 99%

Feeding on the smallest cells: an in situ study of picoplankton capture by bivalve molluscs from oligotrophic waters

et al. 2023

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IntroductionBivalve molluscs are among the most prominent coastal benthic-suspension-feeders and their farming is the largest and fastest-growing sector of aquaculture. More than a century of intensive laboratory studies (but surprisingly few in-situ studies) has yielded the consensus view that bivalves mainly capture particles >4µm. Nonetheless, bivalves thrive throughout the world’s oceans that are mostly oligotrophic, characterized by low food concentration and dominated by minute autotrophic picoplankton (<2 µm).MethodWe measured, in situ, the capture efficiency of naturally occurring planktonic cells by five suspension-feeding bivalve species from four families and three orders, residing in two oligotrophic basins: the Red Sea and the East Mediterranean Sea.ResultsThree species captured micron and submicron autotrophic cells with high efficiency (60-90%), suggesting a wider trophic niche than hitherto believed. In contrast, two sympatric species captured mainly particles >10 µm.DiscussionThese results suggest that the same basic anatomical tool kit, variably modulated according to taxa, habitat, or life history traits, enables the remarkable evolutionary and ecological success of bivalves in trophically-diverse habitats.

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Identification of haemocytes and histological examination of gills of the spiny oyster Spondylus gaederopus (Linnaeus, 1758)

Fabrello

Pagano²,

Arrigo³

et al. 2022

Fish & Shellfish Immunology

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The Indo-Pacific oysterSpondylus spinosusSchreibers, 1793 in the Eastern Mediterranean Sea: reproductive features

Cited by 5 publications

References 24 publications

Invading bivalves replaced native Mediterranean bivalves, with little effect on the local benthic community

Invading bivalves replaced native Mediterranean bivalves, with little effect on the local benthic community

Feeding on the smallest cells: an in situ study of picoplankton capture by bivalve molluscs from oligotrophic waters

Identification of haemocytes and histological examination of gills of the spiny oyster Spondylus gaederopus (Linnaeus, 1758)

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