Reproductive Cycle and Fecundity of the Date Mussel Lithophaga Lithophaga (Bivalvia: Mytilidae)

Galinou-Mitsoudi, Sofia; Sinis, A. I.

doi:10.1093/mollus/60.4.371

Cited by 30 publications

(27 citation statements)

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“…Similarly, Š imunović et al (1990) revealed the presence of 56.3 % of males collected from the central Adriatic Sea (Table 4). In the North Evoikos Gulf, a male predominance (72.86 %) was recorded among individuals up to 70-mm shell length, whereas the sex ratio was balanced among individuals which were larger than 70 mm (Galinou-Mitsoudi and Sinis 1994). In the present study, the sex ratio among individuals up to 48 mm was 2.03 (males):1(females), but many individuals of this size class were still sexually undifferentiated.…”

Section: Discussioncontrasting

confidence: 57%

“…According to the same authors, the gametogenetic activity was reduced in autumn, associated with a decrease in water temperature. Galinou-Mitsoudi and Sinis (1994) reported that the period of full maturity extended mainly from July to November, and the release of gametes began immediately after a decline in the highest water temperature (B27°C) and an increase in salinity ([31 %). This confirms that the length and the timing of the reproductive cycle in bivalves depend on environmental factors (seawater temperature, salinity, abundance of food), the action of which may be meditated by neurosecretions (Š imunović et al 1990; Lemaire et al 2006).…”

Section: Discussionmentioning

confidence: 99%

“…In their tunnels, individuals can live for 50 years or more (Katsanevakis et al 2008). This gonochoristic bivalve is most abundant in the midlittoral and sublittoral zones (Galinou-Mitsoudi and Sinis 1994). The species is distributed along Atlantic coasts from Portugal to Senegal and further to the north of Angola (Gonzalez et al 2000).…”

Section: Introductionmentioning

confidence: 99%

“…The date mussel was subject of several studies dealing with its biology, population dynamics, fecundity and habitat (Š imunović et al 1990;Galinou-Mitsoudi and Sinis 1994, 1995Jaafar Kefi et al 2007;Devescovi 2009). Some other studies focused on the impact of harvesting and overexploitation on marine ecosystem and Mediterranean rocky coasts (Fanelli et al 1994;Parravicini et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Relative growth and reproductive cycle of the date mussel Lithophaga lithophaga (Linnaeus, 1758) sampled from the Bizerte Bay (Northern Tunisia)

2014

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Relative growth and the reproductive cycle of the date mussel Lithophaga lithophaga were studied from September 2002 to October 2003 in the Bizerte Bay (Northern Tunisia). Relationships between shell length and shell width, shell height as well as volume-related variables (shell dry weight, soft tissues dry weight and total wet weight) showed negative allometries in both sexes except for shell width in males (isometry) and shell height in both sexes (positive allometry). The sex ratio was unbalanced, within the length range of 6-48 mm, 49.43 % of the animals were males, 24.39 % females and 26.17 % sexually undifferentiated; within the length range of 49-92 mm, the respective values were 41.19, 52.7 and 6.1 %. Histological investigations as well as analyses of the condition index and the gonadosomatic index (CI and GSI) revealed the presence of a single reproductive cycle per year. Spawning occurred at the end of August and early September and was associated with a decrease in seawater temperature and salinity. A resting phase occurred in winter, coinciding with the lowest water temperatures. Histological examinations of the gonads of a total of 130 specimens revealed only two cases of hermaphroditism. The present study constitutes a useful baseline for a sustainable management of local wild stocks of L. lithophaga.

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Section: Discussioncontrasting

confidence: 57%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Relative growth and reproductive cycle of the date mussel Lithophaga lithophaga (Linnaeus, 1758) sampled from the Bizerte Bay (Northern Tunisia)

2014

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“…The appearance of spat in 1989, one month after the start of the reproductive period and, in 1990, two months after, are attributed to inter-annual differences in hydrography (Galinou-Mitsoudi & Sinis, 1994) which significantly affect the growth of larvae (Loosa-noff & Davis, 1963;Raimbault, 1966;Hrs-Brenko, 1974;Culliney et al, 1975;Meadows & Campbell, 1972;His et al, 1989). Culliney et al (1975) and His et al (1989) consider that temperature is the most important factor affecting larval growth.…”

Section: Recruitmentmentioning

confidence: 99%

Population dynamics of the date mussel,Lithophaga lithophaga (L., 1758) (Bivalvia: Mytilidae), in the Evoikos Gulf (Greece)

Galinou-Mitsoudi

Sinis

1997

Helgoländer Meeresunters.

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Changes with time in a Lithophaga lithophaga population, spatial distribution, size-frequency distribution and recruitment were studied. The population was homogenous, without statistically significant dilferences, down to a depth of 6 m, the depth to which sampling was carried out. Population density showed periodic variations over the year and changed as the gradient of the substratum increased. Dispersion indices indicated that individuals were distributed randomly m clumps during the period of recruitment at different depths. Juveniles, up to a length of 4 mm, formed the highest percentage of the population. Larvae settled at a length of > 260 lam, and individuals reached a length of 35 mm by the end of their first year. The appearance of newly settled individuals occurred two months after the maximum occurrence of larvae in the water. High percentages of settled spat were first observed in early winter at a depth of between 0-3 m although, later, higher percentages were found at 3-6 m depth.

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Evolutionary and ecological insights from vital staining of bivalve oocytes: A Red Queen at the sweepstakes?

et al. 2022

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To determine the proportion of inviable oocytes that are spawned along with normal oocytes in marine bivalves, we turned to a time-honored technique not previously used on invertebrate oocytes: the neutral red vital stain. Despite the difficulty in obtaining induced spawns from field-collected Cerastoderma edule (L), the results and insights from this simple procedure to answer a simple question were unexpected and far-reaching. Mean proportions of inviable oocytes in the spawns of cockle C. edule ranged from 35% to 85%, with the vast majority represented by atresic (autolyzing) oocytes. These levels are in agreement with previous quantitative histological observations of prespawning atresia in both C. edule and the Manila clam Tapes philippinarum. Such elevated prefertilization inviability mirrors the known high level of postfertilization inviability in bivalves. Together, these high levels of inviability may account for much of the early mortality in the type III survivorship curves typical of marine bivalves. The combination of high fecundity and high oocyte inviability suggests a Red Queen-type reproductive dilemma in these species. In addition, the great degree of interindividual variation observed in oocyte inviability suggests that cockles, and perhaps other intertidal bivalves, present a Sweepstakes Reproductive Strategy, in which highly variable individual fecundity confronts a highly variable environment. The neutral red technique promises to be a useful tool for investigating prespawning inviability in other marine taxa, as well as for aquaculture, conservation, restocking, ecophysiology, and environmental monitoring.

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Reproductive Cycle and Fecundity of the Date Mussel Lithophaga Lithophaga (Bivalvia: Mytilidae)

Cited by 30 publications

References 0 publications

Relative growth and reproductive cycle of the date mussel Lithophaga lithophaga (Linnaeus, 1758) sampled from the Bizerte Bay (Northern Tunisia)

Relative growth and reproductive cycle of the date mussel Lithophaga lithophaga (Linnaeus, 1758) sampled from the Bizerte Bay (Northern Tunisia)

Population dynamics of the date mussel,Lithophaga lithophaga (L., 1758) (Bivalvia: Mytilidae), in the Evoikos Gulf (Greece)

Evolutionary and ecological insights from vital staining of bivalve oocytes: A Red Queen at the sweepstakes?

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