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In: Crustaceana
In: Crustaceana
Authors: Lin Ma and Xinzheng Li

Abstract

A new species, Typhlamphiascus tuerkayi sp. nov. (Copepoda, Harpacticoida, Miraciiidae), is described from specimens collected in the South China Sea. This new species differs from its congeners by the combined characters of the number of chitinous lamellae on the male P1, the apomorphic setal formulae of the swimming legs, and the setal number on P5. The new species is most similar to T. ovale Wells & Rao, 1987 and T. higginsi Chullasorn, 2009. It differs from the latter two species by the following features: the caudal ramus about three times as long as broad, P2 exp-3 with three outer spines, P3 enp-3 with two inner setae, P5 basoendopod in the female with four setae, P5 exopod in the female about three times as long as its greatest width, antennule of male 9-segmented, the inner edge of the basis in male P1 with eight chitinous lamellae, P5 exopod in male with four setae.

In: Studies on Decapoda and Copepoda in Memory of Michael Türkay
Authors: Lin Ma and Xinzheng Li

Abstract

A new species, Typhlamphiascus tuerkayi sp. nov. (Copepoda, Harpacticoida, Miraciiidae), is described from specimens collected in the South China Sea. This new species differs from its congeners by the combined characters of the number of chitinous lamellae on the male P1, the apomorphic setal formulae of the swimming legs, and the setal number on P5. The new species is most similar to T. ovale Wells & Rao, 1987 and T. higginsi Chullasorn, 2009. It differs from the latter two species by the following features: the caudal ramus about three times as long as broad, P2 exp-3 with three outer spines, P3 enp-3 with two inner setae, P5 basoendopod in the female with four setae, P5 exopod in the female about three times as long as its greatest width, antennule of male 9-segmented, the inner edge of the basis in male P1 with eight chitinous lamellae, P5 exopod in male with four setae.

In: Studies on Decapoda and Copepoda in Memory of Michael Türkay
Authors: Lin Ma and Xinzheng Li

A new species, Typhlamphiascus tuerkayi sp. nov. (Copepoda, Harpacticoida, Miraciiidae), is described from specimens collected in the South China Sea. This new species differs from its congeners by the combined characters of the number of chitinous lamellae on the male P1, the apomorphic setal formulae of the swimming legs, and the setal number on P5. The new species is most similar to T. ovale Wells & Rao, 1987 and T. higginsi Chullasorn, . It differs from the latter two species by the following features: the caudal ramus about three times as long as broad, P2 exp-3 with three outer spines, P3 enp-3 with two inner setae, P5 basoendopod in the female with four setae, P5 exopod in the female about three times as long as its greatest width, antennule of male 9-segmented, the inner edge of the basis in male P1 with eight chitinous lamellae, P5 exopod in male with four setae.

In: Crustaceana
Authors: Qingxi Han and Xinzheng Li

The brown shrimp, Crangon hakodatei Rathbun, 1902, is a common species in northwestern Pacific waters. Based on an investigation of references since the 1950s, we studied the ecological features of this commercially important shrimp. The results show, that the species has a long reproductive period with ovigerous females throughout the year and two discrete peaks in the spawning season, i.e., in spring and in autumn. Its sex ratio also shows significant seasonal variation. This shrimp is a keystone species in the demersal trophic pathways in the northern Chinese seas. It occupies an intermediate position in the food web, acting both as an important food resource for flatfishes on a higher trophic level, and as a predator upon the early life stages of those flatfishes.

In: Crustaceana