In-situ studies on the life cycle of Diastylis rathkei (Cumacea: Crustacea)

Valentin, C.; Anger, Klaus

doi:10.1007/bf00395596

Cited by 18 publications

(15 citation statements)

References 4 publications

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“…Mature males are known to move into the water col− umn for a substantial period of time during the mating season, and females release their offspring during a brief rise into the water column (Valentin andAnger 1977, Dauvin andZouhiri 1996). As most of the cumaceans are known to live in soft sed− iment, which indicates almost no current, there is not much chance for passive dis− persal.…”

Section: Peracarida Analysesmentioning

confidence: 99%

Are there widespread peracarid species in the deep sea (Crustacea: Malacostraca)?

Brandt¹,

Błażewicz-Paszkowycz²,

Bamber³

et al. 2012

Polish Polar Research

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Abstract:The global zoogeographic distribution of the most widespread peracarid species occurring in three or more ocean basins below 2000 m is analysed. Basing on the published data we investigated 45 peracarid species, which have a most widespread distribution and most likely are cosmopolitan. Thirty−three species have a wide distribution in the Northern Hemisphere. Most species occur in the North Atlantic, however, 16 of these species occur also in the North Pacific, a more limited number of species occurs in the South Atlantic or South Pacific The Southern Ocean displays some special zoogeographic features and 22 widespread species occur there below 2000 m, including highly eurybathic ones. In total, 11 of the analysed species occur in all oceans. Eucopia australis (Lophogastrida), Munneury− cope murrayi (Isopoda) and Eurythenes gryllus (Amphipoda) are the species with the wid− est distributions. Other peracarids occurring in all oceans are: the isopods Paramunnopsis oceanica and Eurycope sarsi, the mysid Caesaromysis hispida the lophogastrid Eucopia unguiculata, the amphipod Mesopleustes abyssorum and the tanaids Exspina typica, Para− narthura insignis and Pseudotanais nordenskioldi. No cumacean species has been reported with an ocean−wide distribution but Campylaspis glabra occurs in the Atlantic, Indian and Pacific oceans. Among plenty of rare species in each order there are only few species with wide distribution records. There is evidence from molecular genetic studies that some of the widespread peracarids represent several cryptic species, however, some, e.g. Eucopia aus− tralis, seem to be truly cosmopolitan species. Geography of sampling is biasing our view of biogeography. The history and quality of taxonomic work as well as the reliability of geo− graphic records (quality control of large databases) limits our investigations of widespread or cosmopolitan species as much as the limited knowledge of variation within most species causes difficulties in defining morpho−species with certainty.

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Section: Peracarida Analysesmentioning

confidence: 99%

Are there widespread peracarid species in the deep sea (Crustacea: Malacostraca)?

Brandt¹,

Błażewicz-Paszkowycz²,

Bamber³

et al. 2012

Polish Polar Research

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“…This phytal biotope was not locally fixed. A general description of the investigation area and a survey of the algal species found there is given by Anger et al (1977).…”

Section: Methodsmentioning

confidence: 99%

“…The extreme dominance of young mussels (Mytilus edulis) depresses the quantitative correspondence (C) to 1.7 ~ The similarity of species composition (J) is also very low (8.6 0/0). These algal carpets introduce great amounts of organic matter into the benthic subsystem and support growth and immigration of an important predator, Asterias rubens (Anger et al, 1977).…”

Section: Homogeneitymentioning

confidence: 99%

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In-situ investigations on small-scale local and short-term changes of sublittoral macrobenthos in Lübeck Bay (western Baltic Sea)

Rogal

Anger

Schriever

et al. 1978

Helgolander Wiss. Meeresunters

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In-situ studies on sublittoral soft bottom macrofauna (depth: 14-16 m) employing the underwater laboratory (UWL) "Helgoland" were carried out. Sets of samples were compared for small-scale local and short-term changes in species richness, faunal abundance, numerical dominance, diversity, evenness, homogeneity, and similarity. It could be shown that minor differences in sediment quality can cause conspicuous heterogeneity within a small sampling area (diameter: ca. 100 m). Both spatfalt and mortality of benthic invertebrates can change the faunal structure within a short period (two months). The degree of change varies between species and thus at stations harbouring different faunal assemblages as welt.

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“…Most of the 1200 cumaceans reported are marine species. Life history studies of cumaceans have revealed that their life span usually ranges from a few months to a few years (Forsman 1938, Krüger 1940, Corey 1969, 1976, Gnewuch & Croker 1973, Valentin & Anger 1977, Granger et al 1979, Bishop 1982, Duncan 1984, Jarre 1989, Roccatagliata 1991, Bishop & Shalla 1994, Cartes & Sorbe 1996, Corbera et al 2000, Yoda & Aoki 2002. In general, the cumacean life span seems to be related to ambient temperature, with lower temperatures resulting in a longer life span (Duncan 1984).…”

Section: Introductionmentioning

confidence: 99%

Life history of Nippoleucon hinumensis (Crustacea: Cumacea: Leuconidae) in Seto Inland Sea of Japan. I. Summer diapause and molt cycle

Aruga¹,

Yamamoto

2004

Mar. Ecol. Prog. Ser.

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The life history of the cumacean Nippoleucon hinumensis was investigated in the Seto Inland Sea of Japan from August 1998 to February 2002. The population produced 1 generation per year and recruitment of offspring occurred in April. The post-marsupial period consisted of 8 instars in males and 9 (plus generally 2 repeated instars) in females. Post-marsupial development up to the 4th instar (2nd juvenile stage) was characterized by periodic molting at intervals of 10 d, slow growth rate, and suppression of sexual dimorphism. Thereafter, the juveniles entered a long-term summer diapause from mid-May to early December, during which the ambient seawater temperature ranged from 15 to 28°C. Ninety-nine % of the population during the diapause were at the 2nd juvenile stage, and 1% were at the 1st juvenile stage. In December, the cumaceans resumed growth, characterized by a fortnightly molt cycle, until the females began to incubate the first brood in late February. Each molting was highly synchronized among individuals and phased with the lunar cycles. After the end of the summer diapause, sexual dimorphism became apparent, with ovigerous females becoming about 1.2 times larger than adult males. After release of manca larvae in early April, most females incubated a second brood in late April, and then rapidly disappeared due to mortality probably caused by high water temperature. Clutch size was 57.9 ± 9.4 for the first brood and 42.4 ± 7.3 for the second.

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In-situ studies on the life cycle of Diastylis rathkei (Cumacea: Crustacea)

Cited by 18 publications

References 4 publications

Are there widespread peracarid species in the deep sea (Crustacea: Malacostraca)?

Are there widespread peracarid species in the deep sea (Crustacea: Malacostraca)?

In-situ investigations on small-scale local and short-term changes of sublittoral macrobenthos in Lübeck Bay (western Baltic Sea)

Life history of Nippoleucon hinumensis (Crustacea: Cumacea: Leuconidae) in Seto Inland Sea of Japan. I. Summer diapause and molt cycle

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