TIDAL HEIGHT AND GAMETOGENESIS: REPRODUCTIVE VARIATION AMONG POPULATIONS OF <i>GEUKENSIA DEMISSA </i>

Borrero, Francisco J.

doi:10.2307/1541869

Cited by 45 publications

(19 citation statements)

References 24 publications

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“…In these locations, shell growth was rapid because individuals were continuously submersed, in contrast with those in the intertidal zone. In other bivalves such as scallops, mussels, and oysters, the growth rate also seems to be controlled by food availability (BAYNE & WORRAL 1980, BORRERO 1987, NAVARRO et al 2000, PATERSON et al 2003.…”

Section: Resultsmentioning

confidence: 99%

Population biology and secondary production of the stout razor clam Tagelus plebeius (Bivalvia, Solecurtidae) on a sandflat in southeastern Brazil

Abrahão¹,

Cardoso²,

Yokoyama³

et al. 2010

Zoologia (Curitiba, Impr.)

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The population biology and production of the stout razor clam Tagelus plebeius Lightfoot, 1786 were investigated on an intertidal sandflat on the southeast coast of Brazil (Enseada Beach, São Sebastião, state of São Paulo) between April 1997 and April 1998. Two rectangular sites of 50 X 10 m parallel to the waterline were established, site A (upper intertidal level) and site B (middle intertidal level), where the samples were taken in an 0.5 x 0.5 m quadrat. High abundances were recorded in winter and spring, with no significant differences between the sites. The high bivalve abundances were related to the presence of very fine homogeneous sediment with low salinities. Tagelus plebeius had negative allometric growth, characteristic of deep burrowers for the relationships DM/SL and AFDM/SL. Parameters of the modified von Bertalanffy growth function were: L∞ = 67.01 mm, K = 1.73 year-1, t0 = -0.11 year, C = 0.43, WP = 0.96. The instantaneous mortality (Z) was 3.12 year-1, relatively high in comparison to other tropical bivalve populations. Secondary production was 1.53 g AFDM m-2 year-1, with a P/B ratio reaching 1.37 year-1. This high turnover ratio (P/B) was related to a rapid population replacement, connected with the short life span and high mortality of the species

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Section: Resultsmentioning

confidence: 99%

Population biology and secondary production of the stout razor clam Tagelus plebeius (Bivalvia, Solecurtidae) on a sandflat in southeastern Brazil

Abrahão¹,

Cardoso²,

Yokoyama³

et al. 2010

Zoologia (Curitiba, Impr.)

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“…The timing, duration, and extent of gametogenesis and spawning are influenced by a variety of environmental factors. These include shore level (Ackerman 1971, Bartlett 1972, Suchanek 1981, Borrero 1987, temperature (Elvin 1974, Elvin and Gonor 1979, Hines 1979, and food availability (Pipe 1985). Since epiphytes could modify water flow, temperature, and/ or food availability, one might expect the timing and extent of reproduction to differ within the matched pairs.…”

Section: Observational Methodsmentioning

confidence: 99%

Effect of Algal Epiphytes on the Mussel Mytilus Californianus

Dittman¹,

Robles²

1991

Ecology

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The effects of facultative epiphytes on a bivalve host were studied on an islet near Santa Catalina Island, California. The primary cover in the mid—intertidal zone was a mosaic of red algal turf (Corallina officinalis, Gigartina canaliculata, and Gelidium coulteri) and clumps of the mussel Mytilus californianus. In certain circumstances the algae attached to and overgrew the mussels. In other marine habitats, facultative epibionts benefit bivalve hosts by masking them from predators. At Catalina, spiny lobsters (Panuliris interruptus) and oystercatchers (Haematopus bachmani) preyed on intertidal mussels. However, in tagging studies, overgrown mussels displayed a nonsignificant trend towards lower survivorship. A factorial experiment manipulating exposure to predators and the cover of epiphytes demonstrated that overgrowth significantly reduced survivorship. There was no significant statistical interactions between treatment effects, indicating that the presence of algae did not protect the mussels from predators. Overgrown mussels also had significantly lower rates of growth and reproduction than naturally clear mussels of similar size and location. Experimental removal of the epiphytes caused significant increases in mussel growth and reproduction relative to overgrown controls.

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“…Fig. Furthermore, Borrero (1987) has noted that even within a site, variable access to resources driven by reduced feeding times as a function of increasing distance into the marsh can result in delayed gamete production. Shell-to-tissue ratios of ribbed mussels for each meter into the marsh.…”

Section: Distribution and Condition Indexmentioning

confidence: 99%

Shorescape‐level factors drive distribution and condition of a salt marsh facilitator (Geukensia demissa)

2018

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Ribbed mussels (Geukensia demissa) are a highly abundant bivalve filter feeder throughout the salt marshes of the U.S. Atlantic Coast. These mussels form a mutualistic relationship with smooth cordgrass Spartina alterniflora wherein the grass provides habitat and shade to the mussels, and the mussels stabilize the sediment and fertilize the grass. Salt marshes are, however, rapidly changing and eroding as humans modify the coast, and the rate of sea level rise is accelerating. In order to understand how ribbed mussels may respond to their changing habitat, we collected mussel density and distribution data from 30 marshes covering the range of geomorphic settings found in lower Chesapeake Bay. We used a combination of in situ and GIS-derived spatial variables to develop spatially applied models of ribbed mussel density and physical condition. Of the estimated 1.06 billion ribbed mussels in Virginia, we found that mussels were most abundant along the front edge of marshes in wide creeks, rivers, or bays with dense Spartina and minimal proximal forest, set in agriculturally dominated areas. In contrast, mussel condition was highest in fringing marshes located in narrow tidal creeks. Ribbed mussels responded to factors at a variety of scales, ranging from extremely local (0.5 m) to larger shorescapes (≥300 m). The methods that we used to create models linking both aquatic and terrestrial variables to explain the variation in ribbed mussel populations along the shoreline provide a valuable tool for identifying baselines and assessing potential for change across estuary-level spatial scales not only for ribbed mussels in the Chesapeake Bay, but also for other sessile, intertidal species in other systems.

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TIDAL HEIGHT AND GAMETOGENESIS: REPRODUCTIVE VARIATION AMONG POPULATIONS OF GEUKENSIA DEMISSA

Cited by 45 publications

References 24 publications

Population biology and secondary production of the stout razor clam Tagelus plebeius (Bivalvia, Solecurtidae) on a sandflat in southeastern Brazil

Population biology and secondary production of the stout razor clam Tagelus plebeius (Bivalvia, Solecurtidae) on a sandflat in southeastern Brazil

Effect of Algal Epiphytes on the Mussel Mytilus Californianus

Shorescape‐level factors drive distribution and condition of a salt marsh facilitator (Geukensia demissa)

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