scholarly journals Life history of the copepod Hemicyclops gomsoensis (Poecilostomatoida, Clausidiidae) associated with decapod burrows in the Tama-River estuary, central Japan

2007 ◽  
Vol 2 (3) ◽  
pp. 134-146 ◽  
Author(s):  
HIROSHI ITOH ◽  
SHUHEI NISHIDA
Keyword(s):  
Life History ◽  
River Estuary ◽  
Central Japan ◽  
History Of

scholarly journals Life history of Spratelloides gracilis in the temperate waters off Cape Shionomisaki, central Japan

2020 ◽  
Vol 86 (5) ◽  
pp. 386-394
Author(s):  
NORIO SHIRAFUJI ◽  
YOSHIRO WATANABE ◽  
YASUYUKI TAKEDA ◽  
MASAYUKI CHIMURA ◽  
TOSHIHIRO ONITSUKA ◽  
...  
Keyword(s):  
Life History ◽  
Central Japan ◽  
History Of

scholarly journals Life History of the Marine Isopod Cyathura polita in the Saint John River Estuary, New Brunswick: a Species at the Northern Extent of its Range

2007 ◽  
Vol 121 (2) ◽  
pp. 168
Author(s):  
Sarah C. Mercer ◽  
Glenys D. Gibson ◽  
Michael J. Dadswell
Keyword(s):  
Life History ◽  
East Coast ◽  
River Estuary ◽  
The United States ◽  
Bay Of Fundy ◽  
Sampling Program ◽  
Saint John ◽  
History Of ◽  
Northern Shore ◽  
One Year

The marine isopod, Cyathura polita, inhabits estuaries on the east coast of North America from the Gulf of Mexico to the Bay of Fundy, Canada. We studied C. polita in the Saint John estuary to test for potential differences in life history that might occur because of the northern location of the population. In the Saint John, based on our interpretation from a six-month sampling program (May-October), the population exhibits a three-year life cycle, one year longer than more southern populations, and stretching over four summers. Our study supported the occurrence of protogynic hermaphroditism. After two summers as juveniles, individuals matured as females during their third summer, then displayed sex reversal by becoming males that fall, and finally reproducing as males in their fourth summer of life before death. Mean length of C. polita from the Saint John was greater than individuals from more southern populations (females, 13.8 ± 2.14 mm; males, 16.3 ± 2.41 mm). Annual brood release occurred in late July-early August. Mean fecundity of females was 53.2 ± 18.9 embryos per brood, which was greater than found in southern populations. Cyathura polita is rare in Canada and is known only from the Saint John and along the northern shore of the Bay of Fundy to the border of the United States.

scholarly journals Life history of the Indo-Pacific humpback dolphin in the Pearl River Estuary, southern China

2011 ◽  
Vol 28 (1) ◽  
pp. 84-104 ◽  
Author(s):  
Thomas A. Jefferson ◽  
Samuel K. Hung ◽  
Kelly M. Robertson ◽  
Frederick I. Archer
Keyword(s):  
Life History ◽  
Southern China ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Pearl River ◽  
The Pearl River Estuary ◽  
History Of ◽  
The Pearl River
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