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Phylogenetic analysis of host–symbiont specificity and codivergence in bioluminescent symbioses
TLDR
In several associations, bacterial species identities contradicted strict host family bacterial species specificity and the hypothesis of codivergence in bioluminescent symbioses was refuted.
Developmental and Microbiological Analysis of the Inception of Bioluminescent Symbiosis in the Marine Fish Nuchequula nuchalis (Perciformes: Leiognathidae)
TLDR
Results indicate that light organs of N. nuchalis flexion and postflexion larvae are at an early stage of development and that inception of the symbiosis apparently occurs in flexion larvae of 6.0 to 6.5 mm in notochord length, and that Ontogeny of the light organ therefore apparently precedes acquisition of the Symbiotic bacteria.
Evaluation of the larval distribution and migration of the Japanese eel in the western North Pacific
The distribution of all larval stages of the Japanese eel, Anguilla japonica, were examined using historical catch records and original data in the western North Pacific (WNP) to evaluate existing
Early ontogeny and systematics of Bothidae, Pleuronectoidei
TLDR
This study reviews the early ontogeny and systematics of bothids of the world and resolves two monophyletic groups and unresolved polytomy at basal nodes.
Reproductive biology of male skipjack tuna Katsuwonus pelamis (Linnaeus) in the tropical western and central Pacific Ocean
TLDR
The results imply that male skipjack tuna in this area showed evidence of spawning activity throughout the year without a clear seasonal pattern.
Spawning frequency and batch fecundity of skipjack tuna Katsuwonus pelamis in the tropical west-central Pacific Ocean
中西部熱帯太平洋におけるカツオの産卵頻度とバッチ産卵数(1 回当りの産卵数)を推定した。6~9 時,9~12 時,12~15 時採集群の産卵頻度は 0.49, 0.56, 0.5, 15~18 時,18~21 時採集群では,それぞれ 0.26, 0.14 と推定された。最終成熟段階(胚胞移動期以降の卵母細胞を有する)の 23 個体にて,最大卵母細胞径群の卵数(0.5 mm
Pelagic eggs and larvae of Coryphaenoides marginatus (Gadiformes: Macrouridae) collected from Suruga Bay, Japan
TLDR
The pelagic eggs, yolk-sac and pelagic larvae of the macrourid fish, Coryphaenoides marginatus, from Suruga Bay in southern Japan, are described and indicate two stages (rising and falling) of ontogenic vertical migration.
Pelagic juvenile of Halargyreus johnsonii (Gadiformes: Moridae) from Suruga Bay, Japan
TLDR
A pelagic juvenile of the deep-sea gadiform fish Halargyreus johnsonii was collected by a larva net towed at depths from 200 m to 90‷m at Suruga Bay, Japan and had an elongate body, eyes located dorsally on the head, a depressed anal fin, small bony tubercles on the lower jaw symphysis, elongate pelvic fin rays, and a pointed caudal fin.
Experimental study on the inflation and deflation of gas bladder of Japanese anchovy, Engraulis japonicuslarvae
TLDR
The inflation of gas bladders decrease energy consumption at night when feeding does not take place, and is one of the important adaptations for survival of anchovy larvae.
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