Hatchery culture of European clam species (family Veneridae)

Costa, Fiz da; Cerviño-Otero, Ana; Iglesias, Òscar; Cruz, Andreia; Guévélou, Éric

doi:10.1007/s10499-020-00552-x

Cited by 18 publications

(12 citation statements)

References 86 publications

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“…Matias et al (2009) presented differences in the conditioning time of Ruditapes decussatus depending on the date of collection associated with the differences in the initial gonadal development of breeders. About 14 weeks of conditioning has been described for R. decussatus with breeders with gonads at rest, and only 6–7 weeks with breeders with advanced gonadal development (Abbas et al, 2018; da Costa et al, 2020). This is consistent with the conditioning time required for the species T. elliptica observed in this study, where in 48 days (about 7 weeks), it was possible to obtain mature individuals for induction, with 70% of breeders at maximum maturity stage for females and males in the SWCS treatment.…”

Section: Discussionmentioning

confidence: 99%

Broodstock conditioning, spawning, embryonic and early larval development of a novel baby clam species for aquaculture in the southeast Pacific: Tawera elliptica (Lamarck, 1818)

Barría

Abarca

Colivoro

et al. 2021

Aquaculture Research

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Tawera elliptica is a small size (baby) clam with an export fishery in southern Chile. The species is dioecious with external fertilization and without sexual dimorphism. The aim of this work was to optimize broodstock conditioning, induce spawning and describe embryonic development until the early larval stage in a hatchery. Broodstock were conditioned at 3 treatments (with/without sand; water circulation) for 48 days. The clams were fed with a mixed diet of macroalgae, with a daily ration of 250,000 cells/ml. Broodstock response was quantified using condition index and gonad development stages (histological techniques). For spawning induction, physical and biological methods were tested. The best response was achieved in males with physical induction. Histological analysis showed that the water circulation system treatment exhibited the highest percentage of maximum maturity. A fertilization ratio of 500:1 sperm:oocyte was used. The incubation was carried out in 3‐L containers with filtered seawater at 10.7 ± 0.9°C without aeration. Observations, measurements and the duration of each embryonic and larval stage were recorded. The oocyte has a prominent gelatinous layer (= jelly coat) that disappears between the gastrula and trochophore stages. The status of the D‐larval stage was reached at 107 h post fertilization with a mean valve length of 91.4 ± 8.9 µm. This is the first record of the complete embryonic development of this baby clam until the early larval stage and the conditioning in a water circulation system for 48 days are suitable for the species.

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Section: Discussionmentioning

confidence: 99%

Broodstock conditioning, spawning, embryonic and early larval development of a novel baby clam species for aquaculture in the southeast Pacific: Tawera elliptica (Lamarck, 1818)

Barría

Abarca

Colivoro

et al. 2021

Aquaculture Research

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“…Broodstock conditioning for spawning is a crucial step which allows extending spat production season regardless the short period of natural maturity in wild beds. During breeding process, the major aim of broodstock conditioning is to achieve highest gametes release and maximum fecundity of clams whilst improving gametes quality and viability [28][29][30]. This achievement depends essentially on feeding practices during conditioning where microalgae are the only trophic source during broodstock conditioning and their production is one of the most important practices in mollusks hatchery [31].…”

Section: Introductionmentioning

confidence: 99%

Behavioural pattern in changes to diets and food availability during broodstock conditioning of captive clam Ruditapes decussates

Ouagajjou¹,

Aghzar

Ahensal

et al. 2022

E3S Web Conf.

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In terms of the nutritional needs, the choice of the appropriate phytoplankton strain is the main criterion during bivalves breeding improvement in captivity. Seven nutritional diets based on tree microalgae species (Chaetoceros calcitrans, Tetraselmis suecica and Pavlova lutheri), and seven feeding rations (0%, 1%, 2%, 3%, 4%, 5% and 6%) were used to assess the nutritional pattern of Ruditapes decussatus during conditioning practices. All regimes have shown the highest ingestion rate at low food availability (1% to 3%) with a leaning to diets based on C. Calcitrans followed by T. suecica and P. lutheri respectively.A significant influence of diets quality on absorption efficiency of phytoplankton was observed for both monospecific and bispecific diets (F = 21.78, p =3.2 10-7 *** and F = 250.09, p= 2.2 10-16 ***respectively). Whereas, low influence of food availability on absorption efficiency among all used rations has been revealed by clams reared under mono, bi and trispecific diets respectively (F = 11,19, p= 1.9 10-7 ***; F = 16,63, p= 1.03 10-9 *** and F = 2.78, p=0.0534ns). Consequently, this study could be handled as a standard protocol for conditioning process in furtherance of yield maximizing and cost minimizing during spat production of bivalves in hatcheries.

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“…Algumas espécies são de importância econômica, sendo utilizados na gastronomia, vestuários e medicina (PONDER, 2008;COSTA et al, 2020). Também existem espécies que causam impactos negativos como o Limnoperma fortunei (Dunker, 1857) que se aglomeram e entopem equipamentos que utilizam água in natura (MANSUR et al, 2012, XU et al, 2014.…”

Section: Introductionunclassified

Estado atual de conhecimento das principais características dos Moluscos / Current state of knowledge of the main characteristics of mollusks

Camargo¹,

Barreiros²,

Barbosa³

et al. 2021

BJDV

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RESUMOMollusca é um dos maiores Filos do Reino Animal, com uma estimativa de 240.000 espécies. O grupo apresenta enorme diversidade biológica, atrelada a ampla distribuição geográfica. Os representantes do Filo apresentam distintos nichos e relações tróficas. Algumas espécies são de interesse econômico e outras de saúde pública. Um exemplo é o Limnoperna fortunei Dunker, 1857, que condiciona prejuízo ambiental, social e econômico. Já o gênero Biomphalaria, hospedeiro intermediário de um trematódeo, causa problemas de saúde pública em muitos países. Atualmente, o Filo é representado por oito classes: Solenogastres ou Neomeniomorpha, Caudofoveata ou Chaetodermomorpha, Polyplacophora, Bivalvia, Monoplacophora, Scaphopoda, Gastropoda e Cephalopoda. Diante disso, o presente trabalho teve como objetivo realizar um trabalho de revisão do atual conhecimento das características do Filo Mollusca. Mesmo diante dessa diversidade e importância, algumas informações são escassas e pulverizadas na literatura.

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Hatchery culture of European clam species (family Veneridae)

Cited by 18 publications

References 86 publications

Broodstock conditioning, spawning, embryonic and early larval development of a novel baby clam species for aquaculture in the southeast Pacific: Tawera elliptica (Lamarck, 1818)

Broodstock conditioning, spawning, embryonic and early larval development of a novel baby clam species for aquaculture in the southeast Pacific: Tawera elliptica (Lamarck, 1818)

Behavioural pattern in changes to diets and food availability during broodstock conditioning of captive clam Ruditapes decussates

Estado atual de conhecimento das principais características dos Moluscos / Current state of knowledge of the main characteristics of mollusks

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