Discrete seasonal reproduction in an abyssal peracarid crustacean

Reproductive patterns and population characteristics in five deep-water pandalid shrimps in the Western Mediterranean along a depth gradient (150-1100 m)

“…The predominant reproductive pattern found in deep-sea animals is continuous reproduction throughout the year, although seasonal reproduction has been found in some taxa (George & Menzies 1967, Tyler 1986, Harrison 1988, Gage & Tyler 1991, Bishop & Shalla 1994. The pandalid shrimps analysed in this study were distributed at transitional depths between shallow a n d deep environments.…”

“…Taking into found in some species of bathyal and abyssal crusaccount these considerations, the objective of this taceans. Evidence for seasonal reproductive patterns paper is to make interspecific comparisons, along a was described in some abyssal isopod species (George depth gradient (150 to 1100 m), of the reproductive 1967, 1968, Harrison 1988, in the abyssal period length, brood size, egg size, sex ratio and size cumacean Leucon profundus (Bishop & Shalla 1994) composition of the 5 most abundant deep-water panand in the bathyal decapod Dorhynchus thomsoni dalid shrimp species in the Western Mediterranean (Hartnoll & Rice 1985). Although seasonal reproducSea, viz.…”

Spatial and temporal patterns in development of eggs in the vent crab Bythograea thermydron

“…In contrast, this synchronization was absent in co-occurring echinoderms whose mode of larval development is lecithotrophic. More recently, a relationship has been demonstrated between the onset of vitellogenesis and the sinking of phytodetrital matter in Leucon profundus, an abyssal cumacean, also from the Rockall Trough (Bishop & Shalla 1994). In addition, field and laboratory experiments involving the majid crab Chionoecetes opilio have shown that larval release is linked to phytodetrital deposition (Starr et al 1994).…”

Large-scale biodiversity pattern of Cumacea (Peracarida: Crustacea) in the deep Atlantic

“…Deep-sea cumaceans are believed to live partially or completely buried in the top layer of sediment, with many species being surface deposit-feeders or resuspension filter-feeders. Although few species have been investigated, in some, reproductive investment appears timed to coincide with the seasonal arrival of phytodetritus at the seabed (Bishop & Shalla 1994, Cartes & Sorbe 1996, suggesting utilisation of this food source. However, a group of nannastacid genera, represented in the current data set by 69 species of Campylaspis, Procampylaspis and Camplyaspides, lack a sieving apparatus, have piercing mouthparts and are thought to be macrophagous, and probably predatory (Jones 1976).…”