Copper Toxicity to Larval Stages of Three Marine Invertebrates and Copper Complexation Capacity in San Diego Bay, California

2005 ◽  
Vol 39 (6) ◽  
pp. 1542-1546 ◽  
Author(s):  
Ignacio Rivera-Duarte ◽  
Gunther Rosen ◽  
David Lapota ◽  
David B. Chadwick ◽  
Lora Kear-Padilla ◽  
...  
Keyword(s):  
San Diego ◽  
Marine Invertebrates ◽  
Copper Toxicity ◽  
Complexation Capacity ◽  
Larval Stages ◽  
Copper Complexation ◽  
San Diego Bay

Reproduction and Organochlorine Contaminants in Terns at San Diego Bay

1985 ◽  
Vol 8 (1) ◽  
pp. 42 ◽  
Author(s):  
Harry M. Ohlendorf ◽  
Fred C. Schaffner ◽  
Thomas W. Custer ◽  
Charles J. Stafford
Keyword(s):  
San Diego ◽  
Organochlorine Contaminants ◽  
San Diego Bay

DNA damage in mussels at sites in San Diego Bay

1998 ◽  
Vol 399 (1) ◽  
pp. 65-85 ◽  
Author(s):  
Scott A Steinert ◽  
Rebecca Streib-Montee ◽  
James M Leather ◽  
David B Chadwick
Keyword(s):  
Dna Damage ◽  
San Diego ◽  
San Diego Bay

scholarly journals Thermal tolerance of the zoea I stage of four Neotropical crab species (Crustacea: Decapoda)

2018 ◽  
Vol 35 ◽  
pp. 1-5
Author(s):  
Adriana P. Rebolledo ◽  
Rachel Collin
Keyword(s):  
Thermal Tolerance ◽  
Elevated Temperatures ◽  
Marine Invertebrates ◽  
Negative Impact ◽  
Larval Survival ◽  
Crab Species ◽  
Marine Habitat ◽  
Mangrove Species ◽  
Larval Stages ◽  
Carry Over

. Although larval stages are often considered particularly vulnerable to stressors, for many marine invertebrates studies of thermal tolerance have focused on adults. Here we determined the upper thermal limit (LT50) of the zoea I of four Caribbean crab species (Macrocoelomatrispinosum, Aratuspisonii, Armasesricordi, and Minucarapax) and compared their thermal tolerance over time and among species. The zoea from the subtidal species M.trispinosum and tree climbing mangrove species A.pisonii had a lower thermal tolerance, 35 and 38.5 °C respectively, than did the semiterrestrial A.ricordi and M.rapax. In all four species tested, the estimates of thermal tolerance depend on the duration of exposure to elevated temperatures. Longer exposures to thermal stress produce lower estimates of LT50, which decreased by ~1 °C from a two- to a six-hour exposure. Crab embryos develop on the abdomen of the mother until the larvae are ready to hatch. Therefore, the thermal tolerances of the embryos which need to coincide with the environmental conditions experienced by the adult stage, may carry over into the early zoea stage. Our results suggest that semiterrestrial species, in which embryos may need to withstand higher temperatures than embryos of subtidal species also produce larvae with higher thermal tolerances. Over the short term, the larvae of these tropical crab species can withstand significantly higher temperatures than those experienced in their marine habitat. Longer term rearing studies are necessary to determine the temperature at which chronic exposure has a negative impact on embryonic and larval survival.

In Situ Measurements of Polychlorinated Biphenyls in the Waters of San Diego Bay, California

2002 ◽  
Vol 36 (23) ◽  
pp. 4975-4980 ◽  
Author(s):  
Eddy Y. Zeng ◽  
Jian Peng ◽  
David Tsukada ◽  
Teh-Lung Ku
Keyword(s):  
Polychlorinated Biphenyls ◽  
San Diego ◽  
In Situ Measurements ◽  
San Diego Bay

Stormwater Toxicity in Chollas Creek and San Diego Bay, California

2003 ◽  
pp. 119-132 ◽  
Author(s):  
Kenneth Schiff ◽  
Steven Bay ◽  
Dario Diehl
Keyword(s):  
San Diego ◽  
San Diego Bay

Neustonic distribution of decapod planktonic stages and competence of brachyuran megalopae in coastal waters

2007 ◽  
Vol 58 (6) ◽  
pp. 519 ◽  
Author(s):  
Fabiana T. Moreira ◽  
Joseph Harari ◽  
Augusto A. V. Flores
Keyword(s):  
Vertical Migration ◽  
Coastal Waters ◽  
Marine Invertebrates ◽  
Larval Supply ◽  
Vertical Movements ◽  
Larval Stages ◽  
Intertidal Crab ◽  
In Captivity ◽  
Near Shore ◽  
Convergence Zones

Settlement rate may not reflect larval supply to coastal waters in different marine invertebrates and demersal fishes. The importance of near-shore oceanography and behaviour of late larval stages may be underestimated. The present study conducted neustonic sampling over station grids and along full-length transects at two embayments in south-eastern Brazil to (1) compare diurnal and nocturnal occurrence of most frequent decapod stages to assess their vertical movements, (2) describe the formation of larval patches and (3) measure competence of crab megalopae according to their distance to recruitment grounds. Several shrimp species apparently undergo a diel vertical migration, swimming crab megalopae showed no vertical movements and megalopae of the intertidal crab Pachygrapsus transversus revealed a reversed vertical migration. During the day, crab megalopae aggregated in convergence zones just below surface slicks. These larvae consisted of advanced, pre-moult stages, at both mid-bay and near-shore patches. Competence, measured as the time to metamorphosis in captivity, was similar between larval patches within each taxon. Yet, subtidal portunids moulted faster to juveniles than intertidal grapsids, possibly because they were closer to settlement grounds. Megalopae of Pachygrapsus from benthic collectors moulted faster than those from bay areas. These results suggest that alternative vertical migration patterns of late megalopae favour onshore transport, and actual competence takes place very close to suitable substrates, where larvae may remain for days before settlement. Lack of correlation between larval supply and settlement for Pachygrapsus suggests that biological processes, besides onshore transport, may play an important role in determining settlement success of coastal crabs.

A biological measurement of the copper complexation capacity of seawater1

1973 ◽  
Vol 18 (6) ◽  
pp. 993-997 ◽  
Author(s):  
EARL W. DAVEY PRAGER ◽  
MYRA J. MORGAN ◽  
STANTON J. ERICKSON
Keyword(s):  
Complexation Capacity ◽  
Copper Complexation ◽  
Biological Measurement
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