Diet of the Wavy Turban Snail,Megastraea undosa(Gastropoda: Turbinidae), in Subtropical Rocky Reefs

Mazariegos-Villarreal, Alejandra; Fierro-Jaúregui, María de Lourdes; León-Cisneros, Karla; Servière‐Zaragoza, Elisa

doi:10.2984/71.4.9

Cited by 5 publications

(2 citation statements)

References 40 publications

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“…Turban snails (Turbinidae) are generalist herbivores that can attain large sizes and dense aggregations (Foster & Hodgson, 1998; Grange, 1976; Kikutani et al, 2002; Mazariegos‐Villarreal et al, 2017; Smoothey, 2013). Turban snails are a popular target for human consumption as they are easily collected using minimal skill or fishing gear and have high‐quality meat (Ab Lah et al, 2017; Romolo & Trijoko, 2021).…”

Section: Introductionmentioning

confidence: 99%

Extended and spatially asynchronous reproductive periodicity in a harvested, warm‐temperate rocky‐reef gastropod (Turbinidae)

Seinor,

Purcell,

Malcolm

et al. 2023

Fisheries Oceanography

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Turban snails are targeted for their high‐quality meat and, consequently, are often subjected to heavy harvesting pressure. Managing recreational and small‐scale fisheries is challenging, partly due to a lack of biological data underpinning certain regulatory measures. This study aimed to fill current knowledge gaps on the reproductive cycle of the recreationally and culturally harvested Australian turbinid, Turbo militaris. The objectives were to investigate the reproductive timing of T. militaris in New South Wales (NSW) and identify likely environmental drivers of reproductive periodicity. Oocytes and gonads were sampled from wild animals monthly over 15 months at two sites separated by ~500 km. Analysis of oocyte size frequency and gonadosomatic index revealed that T. militaris has a pattern of extended reproduction, which is synchronous between sexes. Turbo militaris was ripest during summer, and spawning appears to have occurred over multiple events, although primarily during winter. Reproductive timing was associated with environmental explanatory variables, including sea surface temperature, wave height, salinity, phytoplankton and nitrate concentration, together accounting for 81% of the variation in oocyte size frequency and 67% in the gonadosomatic index. Reproductive periodicity was correlated with wave conditions and phytoplankton concentrations inconsistently between sites, indicating that the effect of some environmental conditions may be unpredictable or site‐specific. Reproductive timing was asynchronous between two sites in the NSW fishery, posing challenges for designing seasonal fishing closures and community‐based harvesting rules. Spatial closures for species with spawning over extended timeframes, or spatially asynchronous reproductive cycles, are potentially more suitable for achieving fisheries management objectives.

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Section: Introductionmentioning

confidence: 99%

Extended and spatially asynchronous reproductive periodicity in a harvested, warm‐temperate rocky‐reef gastropod (Turbinidae)

Seinor,

Purcell,

Malcolm

et al. 2023

Fisheries Oceanography

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show abstract

“…Another research shows that Megastraea undosa's diet consists of several macroalgae groups such as Rhodophyta, Chlorophyta, and even from Cnidaria groups such as Dynamena sp., Mollusca such as Capulus sp and Petricola sp., Arthropods such as Idotea sp and Amphipoda, and Chordata such as Metandrocarpa sp. (Mazariegos-villarreal et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Food Preference, Fecundity, Proximate Analysis on Eggs and Meat of Turbo crassus (W. Wood 1828) and Turbo setosus (Gmelin 1791) in Sepanjang Beach, Gunungkidul, Special Region of Yogyakarta

Romolo

Auliya

Trijoko

2021

J.Tropical Biodiversity Biotechnology

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Turbo snails have important roles in the ecosystem as prey for predators, and decomposition of dead objects, and it is starting to decrease. This is quite worrying so that conservation efforts must be carried out immediately. Turbo snail species found in Sepanjang Beach, Gunungkidul are Turbo crassus and Turbo setosus. The aims of this study were to determine food preferences, the relationship between body size and fecundity, analyze egg quality based on proximate levels of the two species, and meat proximate of T. crassus and T. setosus. Samples were taken from Sepanjang Beach, Gunungkidul. Food preference was observed using the sedgwick rafter, fecundity was counted using the gravimetric method. Moisture content, protein content, fat content, ash, and carbohydrate content of both species eggs and meat were determined with proximate analysis at the UGM Central Laboratory for Food and Nutrition Studies. The results showed that the dominant food for T. setosus was Phaeophyta, whereas the dominant food for T. crassus was Microcoleus sp. and Phaeophyta. The fecundity of both Turbo species is exponentially positively correlated with all body sizes. Proximate analysis showed that the levels of fat and protein in the eggs of both species were quite high, which meant that the eggs are in good quality. The conclusion of this study is both species have slightly different food preferences. The fecundity of both species will increase exponentially with increasing body size and the broodstock of T. crassus and T. setosus Sepanjang Beach has good quality.

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Testing trophic indicators of fishery health in California’s marine protected areas for a generalist carnivore

Davis

Valle

Haggerty

et al. 2019

Ecological Indicators

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Diet of the Wavy Turban Snail,Megastraea undosa(Gastropoda: Turbinidae), in Subtropical Rocky Reefs

Cited by 5 publications

References 40 publications

Extended and spatially asynchronous reproductive periodicity in a harvested, warm‐temperate rocky‐reef gastropod (Turbinidae)

Extended and spatially asynchronous reproductive periodicity in a harvested, warm‐temperate rocky‐reef gastropod (Turbinidae)

Food Preference, Fecundity, Proximate Analysis on Eggs and Meat of <i>Turbo crassus</i> (W. Wood 1828) and <i>Turbo setosus</i> (Gmelin 1791) in Sepanjang Beach, Gunungkidul, Special Region of Yogyakarta

Testing trophic indicators of fishery health in California’s marine protected areas for a generalist carnivore

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