The larval development of the mud shrimp Upogebia issaeffi (Balss, 1913) (Decapoda: Gebiidea: Upogebiidae) reared under laboratory conditions

Abstract

Larval development of the mud shrimp Upogebia issaeffi (Balss, 1913) (Decapoda: Gebiidea: Upogebiidae) is describedand illustrated for the first time from material reared in the laboratory. The development includes four zoeal and a singlemegalopal stages. At 20–22°C the first megalopa was attained 12 days after hatching. U. issaeffi is distinguished from U.major, the second upogebiid species inhabiting Russian waters of the Sea of Japan, by the presence of the fourth zoeal stage and considerably more intensive larval setation.

The complete larval development of the lobster shrimpBoasaxius princepsBoas, 1880 (Decapoda: Axiidea: Axiidae) obtained in the laboratory

“…The number of zoeal stages in B. princeps is considerably greater than in the genera Trypaea and Upogebia which have no more than five zoeal stages (Konishi 1989;Konishi et al 1990;Miyabe et al 1998;Kornienko et al 2013). It corroborates the opinion of Konishi (1989) that Axiidae is the most plesiomorphic family among axiideans and gebiideans.…”

The Thalassinidean Mud Shrimp Upogebia vasquezi: Life Cycle and Reproductive Traits on the Amazonian Coast, Brazil

“…Thalassinidean burrows are considered unique environments, whose physical-chemical conditions are strongly influenced by the behavior of these species, mostly due to their bioturbation activities, which have effects on nutrient cycling (for example, see [60][61][62]) and also ensure high availability of dissolved oxygen, aside from providing protection from the direct action of waves [1]. The process of burrow construction increases the inner surface area of the sediment, in the oxygenated water-sediment interface [33,63], and causes physicochemical changes, thus increasing the metabolic activity in the sediment [64].…”

“…Burrow structure is specific for each species, and it is related to their feeding mode, as well as to environmental conditions and the population density of these crustaceans in their habitats [63]. Externally, they might be divided into two main types: burrows with and without sediment heaps around their openings [63].…”

“…Burrow structure is specific for each species, and it is related to their feeding mode, as well as to environmental conditions and the population density of these crustaceans in their habitats [63]. Externally, they might be divided into two main types: burrows with and without sediment heaps around their openings [63]. Regarding shape, they might be built in a single U-or Y-shaped tunnel, or in several sediment layers or branched, deep tunnels [63], which might be interconnected and might shelter at least one specimen [68].…”

“…Externally, they might be divided into two main types: burrows with and without sediment heaps around their openings [63]. Regarding shape, they might be built in a single U-or Y-shaped tunnel, or in several sediment layers or branched, deep tunnels [63], which might be interconnected and might shelter at least one specimen [68]. Burrows of U. vasquezi are built in predominantly sandy-muddy sediment, with small and abundant rock fragments, located below extensive outcrops comprised of rocks of several sizes.…”