Secretion at Molting by the Pleopod Tegumental Glands of the Lobster Homarus Americanus (Milne Edwards)

Talbot, Prudence; Zao, P.

doi:10.2307/1548538

Cited by 14 publications

(11 citation statements)

References 10 publications

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“…Secretions of these glands could play multiple functions: they could participate in the formation of seminal fluid and sperm plugs (Beninger et al, 1991(Beninger et al, , 1993 or in the molting process (Gorvett, 1946;Talbot and Zao, 1991). The presence of them along the G1 length could indicate their function in the seminal fluid formation, although, the presence of cuticle pores, also may indicate another function during the molting event.…”

Section: Discussionmentioning

confidence: 99%

Reproductive system and size maturity of the paddle crab Ovalipes trimaculatus (Brachyura: Portunidae) along the Argentine coast

Vallina

Moyano

Cuartas

et al. 2014

Journal of Crustacean Biology

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A B S T R A C TOvalipes trimaculatus (de Haan, 1833) is a commercial species captured in the Mar del Plata coast, Argentina. However, no studies were conducted in order to study its population features neither its reproductive biology. The morphometric and physiological maturity of both sexes, the histology of the female seminal receptacle and ovary, and the ultrastructure of the male gonopods were studied in the present paper. In females, morphometric maturity (44.6 mm of carapace width, CW) was acquired prior to physiological maturity (54.6 mm CW). By contrast, in males, physiological maturity (46.6 mm CW) was acquired prior to morphometric maturity (52.3 mm CW). The ovary is connected to the dorsal part of the seminal receptacle. Neither Spermatophores, nor sperm packets were found inside the seminal receptacle; instead free spermatozoids were observed indicating that sperm from different males is probably mixed favoring sperm competition. The ultrastructure of the male gonopods was similar to the described for other Brachyura. Different types of setae and the presence of internal rosette glands were described and probable functions were suggested.

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Section: Discussionmentioning

confidence: 99%

Reproductive system and size maturity of the paddle crab Ovalipes trimaculatus (Brachyura: Portunidae) along the Argentine coast

Vallina

Moyano

Cuartas

et al. 2014

Journal of Crustacean Biology

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“…d-f Three x-y plots of the peg pores to aesthetascs ratios in both rows against annulus position. Note the lack of a common trend suggesting that the peg pores to aesthetascs ratio is constant throughout the tuft region of the lateral flagellum and Larocque 1998; hindgut : Wallengren 1901;Devi et al 1989;mouthparts: Braun 1876;Wallengren 1901;Alexander 1989;pleopods: Braun 1875pleopods: Braun , 1876Johnson and Talbot 1987;Talbot and Zao 1991;statocysts: Lang and Yonge 1935;sternum: Kamiguchi 1972a;Sarojini et al 1982;uropods: Braun 1875uropods: Braun , 1876Stephens 1952).…”

Section: Identification and Characterization Of Atgsmentioning

confidence: 99%

“…The common structural features of the rosette glands of decapod crustaceans are also present in ATGs and include several cone-shaped secretory cells surrounding an extracellular central space and a common locus continuous with a main drainage duct that traverses the cuticle and opens at its surface in a small pore (Farkas 1927;Arsenault et al 1979;Doughtie and Rao 1982b;Johnson and Talbot 1987;Talbot and Zao 1991;. In terms of the total size and number of secretory cells, the ATGs of P. argus are well within the range present among the rosette glands of decapod crustaceans.…”

Section: Identification and Characterization Of Atgsmentioning

confidence: 99%

Rosette-type tegumental glands associated with aesthetasc sensilla in the olfactory organ of the Caribbean spiny lobster, Panulirus argus

et al. 2006

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The lateral antennular flagellum of decapod crustaceans bears unique olfactory sensilla, namely the aesthetascs, and other sensilla types. In this study, we identify a new major tissue in the lateral flagellum of the Caribbean spiny lobster, Panulirus argus, namely "aesthetasc tegumental glands" (ATGs), based on immunostaining with antibodies against CUB serine protease (Csp), in situ hybridization with csp-specific probes, labeling with the F-actin marker phalloidin, labeling with the nuclear marker Hoechst 33258, and staining with methylene blue. Each ATG has 12-20 secretory cells arranged in a rosette. Each secretory cell has a Csp-immunoreactive basal portion and an apical portion containing granular material (metachromatic staining indicative of acid mucopolysaccharides). At the center of each secretory rosette is a phalloidin-positive common locus that gives rise to a main drainage duct projecting toward the cuticle. Scanning electron and light microscopy show that thin ducts traverse the cuticle and connect to "peg pores" proximal to the bases of the aesthetascs, with 3.4 peg pores per aesthetasc. Since the number of common loci is correlated with the number of peg pores, we conclude that each pore represents the outlet of one ATG, and that the secretions are released from them. We conclude further that ATGs and aesthetascs are functionally linked. We hypothesize that ATG secretions have antifouling and/or friction-reducing properties, and that they are spread over the surface of the aesthetascs by antennular grooming. A review of the literature suggests that ATGs are common in decapod crustacean antennules, and that rosette glands and grooming might be functionally coupled in other body areas.

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“…In Homarus americanus the secretory activity of the pleopod tegumental glands was enhanced upon ecdysis and egg-laying (Aiken and Waddy, 1982;Talbot and Zao, 1991). Some workers suggested that materials secreted from tegumental glands harden the exoskeleton after ecdysis (Stevenson, 1961;Arsenault et al, 1979;Doughtie and Rao, 1982).…”

Section: Function Of the Materials Produced By Secretory Cells In Thementioning

confidence: 99%

“…Type A is characterized by numerous secretory granules, rough endoplasmic reticulum, and Golgi bodies; type B is characterized by an infolded plasma membrane. In the lobster Homarus americanus, secretory cells of the rosette gland in the pleopods were further classified into two types; some secretory cells possess granules including homogeneous materials and the other cells produce honeycombed granules (Johnson and Talbot, 1987;Talbot and Zao, 1991).…”

mentioning

confidence: 99%

A pair of rosette glands in the embryo and zoeal larva of an estuarine crab Sesarma haematocheir, and classification of the tegumental glands in the embryos of other crabs

Ikeda

Hirano

Saigusa

2003

Journal of Morphology

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A pair of rosette glands (one of the tegumental glands in crustaceans) is present at the root of the dorsal spine of the thorax in mature embryos of the estuarine crab Sesarma haematocheir. Each rosette gland is spherical, 45-50 microm in diameter. This gland consists of three types of cells: 18-20 secretory cells, one central cell, and one canal cell. The secretory cells are further classified into two types on the basis of the morphology of secretory granules. There are 17-19 a cells, and only one b cell per rosette gland. An a cell contains spherical secretory granules of 2-3 microm in diameter. The granules are filled with highly electron-dense materials near the nucleus but have lower electron-density near the central cell. The secretory granules contained in the b cell have an irregular shape and are 1-1.5 microm in diameter. The density of the materials in the granules is uniform throughout the cytoplasm. The secretory granules contained in both the a and b cells are produced by the rough endoplasmic reticulum. Materials in the granules are exocytotically discharged into the secretory apparatus inside the secretory cell, sent to the extracellular channels in the central cell, and secreted through the canal cell. The rosette gland can be distinguished from the epidermal cells 2 weeks after egg-laying and the gland matures just before hatching. Materials produced by this gland are secreted after hatching and secretion continues through five stages of zoeal larvae. These rosette glands were never found in the megalopal larva. Rosette glands are found in the embryos of Sesarma spp. and Uca spp. In other crabs, tegumental glands are also found at the same position as in the embryo of S. haematocheir, but the fine structure of their glands is largely different from that of the rosette gland. On the basis of the morphology of secretory cells (a-g cell types), the tegumental glands of a variety of crab embryos can be classified into four types, including rosette glands (type I-IV). The function of these tegumental glands is not yet known, but different types of the gland seem to reflect the phylogeny of the crabs rather than differences of habitat.

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Secretion at Molting by the Pleopod Tegumental Glands of the Lobster Homarus Americanus (Milne Edwards)

Cited by 14 publications

References 10 publications

Reproductive system and size maturity of the paddle crab Ovalipes trimaculatus (Brachyura: Portunidae) along the Argentine coast

Reproductive system and size maturity of the paddle crab Ovalipes trimaculatus (Brachyura: Portunidae) along the Argentine coast

Rosette-type tegumental glands associated with aesthetasc sensilla in the olfactory organ of the Caribbean spiny lobster, Panulirus argus

A pair of rosette glands in the embryo and zoeal larva of an estuarine crab Sesarma haematocheir, and classification of the tegumental glands in the embryos of other crabs

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