The Biology of Oithona Similis in the Gulf of Maine and Bay of Fundy

Fish, Charles J.

doi:10.2307/1537414

Cited by 17 publications

(10 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Calanoid copepods of the genus Paracalanus and cyclopoid copepods of the genus Oithona are the most abundant copepods found in Tolo Harbour (Wong et al , 1993; Zhang & Wong, 2011). Oithona in the Gulf of Maine and Inland Sea of Japan had also been reported to reach peak densities in the summer (Fish, 1936; Uye & Sano, 1995). Several species of Paracalanus , on the other hand, have been found to reach peak abundances around winter in the Gulf of Mannar, India and Biscayne Bay, Florida (Reeve, 1964; Ummerkutty, 1965), but smaller peaks have also been recorded around late spring or summer in the Gulf of Mannar (Ummerkutty, 1965).…”

Section: Discussionmentioning

confidence: 99%

Phytoplankton community size structure, primary production and copepod production in a subtropical coastal inlet in Hong Kong

Lie

Wong

2013

J. Mar. Biol. Ass.

View full text Add to dashboard Cite

Phytoplankton primary production and copepod production, and the size composition of the phytoplankton community in Tolo Harbour, a semi-enclosed bay in north-eastern Hong Kong, were studied from February 2008 to March 2009. Chlorophyll-a (Chl a) concentrations decreased from an average of 9.07 mg l 21 in the inner part of the bay to 3.07 mg l 21 at the mouth of the bay. In terms of contribution to total Chl a biomass, the .20 mm size fraction dominated the phytoplankton community. The zooplankton community in Tolo Harbour was dominated by small copepods, with cephalothorax length ranging from~0.3 to 0.4 mm, and the density of copepods decreased from~15,000 ind.m 23 in the inner part of the bay tõ 9,700 ind.m 23 at the mouth of the bay. Depth-integrated net primary production in Tolo Harbour was high, ranging from 0.34 to 10.40 g C m 22 day 21 , with an overall mean of 2.64 g C m 22 day 21 . In contrast, copepod production was low, ranging from 0.19 to 16.64 mg C m 23 day 21 , with an overall mean of 2.73 mg C m 23 day 21 . The low transfer efficiency of 1.4% between phytoplankton primary production and copepod secondary production suggests that the large phytoplankton was inefficiently grazed by the small copepods in Tolo Harbour.

show abstract

Section: Discussionmentioning

confidence: 99%

Phytoplankton community size structure, primary production and copepod production in a subtropical coastal inlet in Hong Kong

Lie

Wong

2013

J. Mar. Biol. Ass.

View full text Add to dashboard Cite

show abstract

“…In general it disappears in the inner region of various inlets, where Acartia and Oithona nana communities are found. In the northern Atlantic, Oith01:a similis occurs in abundance in inlets for the greater 168 I. YAMAZI part of the year (WILSON, 1932;WIBORG, 1940;DIGBY, 1950;DEEVEY, 1952;FISH, 1936;MARSHALL, 1949), and repeats the spawning three or four times a year. It may become adult within two months in favourable conditions.…”

Section: Oithona Similis Clausmentioning

confidence: 99%

Plankton Investigation in Inlet Waters Along the Coast of Japan -Xix. Regional Characteristics and Classification of Inlet Waters Based on the Plankton Communities-

Yamazi¹

1956

Publ. SMBL

View full text Add to dashboard Cite

“…200 mm) in plankton nets. This fact was actually not something new, because some studies from the early 20th century already pointed out the relevance of small copepods (Bigelow 1926;Fish 1936) and the need to use fine-mesh nets for correct estimates of zooplankton abundances (Evans 1973).…”

mentioning

confidence: 99%

Effects of food concentration on egg production and feeding rates of the cyclopoid copepod Oithona davisae

Zamora-Terol

Saiz

2013

Limnology & Oceanography

View full text Add to dashboard Cite

Experiments to determine egg production and feeding rates of Oithona davisae were carried out under controlled laboratory conditions. From copepodite IV stage on, the animals were fed the heterotrophic dinoflagellate Oxyrrhis marina in a wide range of concentrations (from 10 mg C L 21 to 286 mg C L 21 ), and adult females were daily monitored to study different aspects of their fecundity. Both clutch and egg-production rate increased with food concentration, with values from 8 to 20 eggs for the clutch size, and from 1.8 eggs to 6.3 eggs female 21 d 21 for the egg production. In addition, to assess the efficiency of conversion of food intake into egg mass, two feeding experiments were conducted. Maximum weight-specific ingestion rates (< 80% body C d 21 ) and the egg-production efficiency (16%) were lower than those reported for free-spawning calanoid copepods. The fact that satiating food concentrations for feeding and egg production of adult females of Oithona davisae were rather low suggests an adaptation to exploit oligotrophic environments, and might explain the ecological success of the genus in situations when food becomes limiting for other groups of copepods.

show abstract

The Biology of Oithona Similis in the Gulf of Maine and Bay of Fundy

Cited by 17 publications

References 5 publications

Phytoplankton community size structure, primary production and copepod production in a subtropical coastal inlet in Hong Kong

Phytoplankton community size structure, primary production and copepod production in a subtropical coastal inlet in Hong Kong

Plankton Investigation in Inlet Waters Along the Coast of Japan -Xix. Regional Characteristics and Classification of Inlet Waters Based on the Plankton Communities-

Effects of food concentration on egg production and feeding rates of the cyclopoid copepod Oithona davisae

Contact Info

Product

Resources

About