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aqua International Journal 14(1)



Volume 14, Issue 1 – 28 January 2008

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Volume 14, Issue 1 – 28 January 2008

N. G. Bogutskaya, A. M. Naseka, P. A. Tikhonov: A brief history of the study of fishes of the Caspian Sea and scientific results of the Caspian Expedition of 1904 headed, pp. 1-26

In this communication a history of early investigations of the Caspian Sea is given, with special emphasis on the expedition in 1904 headed by N. M. Knipovich. The contribution of this expedition to the study of biodiversity of the sea, particularly newly discovered fish taxa, is examined. The specificity of the work, the new methods of collecting and examining samples, the routes of the expedition, and the contribution of each participant to the expedition are discussed. Emphasis is placed on the continuity of research conducted on the Caspian Sea. Illustrations for the paper are original photographs made during the 1904 expedition from the archive of Vasily Kononov, a grandfather of the third author. No photographs, except one, have been published before.

Kathleen S. Cole: Observations on spawning behavior and periodicity in the Bluegreen Chromis (Pomacentridae: Chromis viridis), in Madang Lagoon, Papua New Guinea, pp. 27-34

Two populations of the schooling zooplanktivore, Chromis viridis (Teleostei: Pomacentridae), observed in Madang Lagoon, Papua New Guinea, exhibited a high degree of localized spawning synchrony. The reproductive activities associated with synchronized spawning fell into three distinct phases, including an initial aggregation phase, a subsequent spawning phase, and a final embryo-guarding phase. These activities lasted a total of five days at each site. The aggregation-spawning sequence was closely associated with a semi-lunar cycle at the time of the new and full moon, indicating that lunar cues are used to generally synchronize activities among interacting individuals at a particular site. However, the time of spawning for Wongad and Tab populations were not precisely coincident. This absence of temporal alignment in two, relatively closely situated C. viridis populations indicates that more localized, possibly site-specific, cues determine the fine-scale timing for the onset of the reproductive sequence.

John E. Randall and Philip L. Munday: Vanderhorstia steelei, a new shrimpgoby from the Society Islands, pp. 35-41

Vanderhorstia steelei is described as a new species of shrimpgoby from six specimens collected on silty sand from 5 m depth in Cook’s Bay, Moorea, Society Islands. The species is distinguished by 15 dorsal soft rays, 16 anal soft rays, 17 or 18 pectoral rays, 55-58 scales in longitudinal series, a slender body (depth 6.4-7.4 in standard length), lanceolate and terminally bilobed caudal fin, and a color pattern featuring narrow dark bars on the body (from dark brown scale edges) that contain scales with bright yellow centers.

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Weight 0.25 kg
Dimensions 26.6 × 20.3 × 0.3 cm
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