The spiny lobster, Jasus lalandei (H. Milne-Edwards), in South Australia. II. Reproduction

Fielder,

doi:10.1071/mf9640133

Cited by 32 publications

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“…In spiny lobsters, this has been associated with allometric elongation of the 3 rd walking leg (Kubo, 1938;Gordon, 1960;Berry, 1971;George and Morgan 1979;Juinio, 1987;Plaut 1993) providing males with an increased capacity to participate in courtship and mating rituals (Kubo, 1938;MacDiarmid, 1989;Berry, 1971). This was also evident during our study where dimorphism between the sexes was evident at 77.5 mm CL, within the range previously reported for SOM in male J. edwardsii (65-85 mm CL) (Fielder, 1964;MacDiarmid, 1989).…”

Section: Discussionsupporting

confidence: 73%

Sexual maturation in captive spiny lobsters,Jasus edwardsii, and the relationship of fecundity and larval quality with maternal size

Smith¹,

Ritar²

2007

Invertebrate Reproduction & Development

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SummaryReproductive and somatic parameters of southern rock lobsters, Jasus edwardsii, held captive since puerulus and wild-caught adults were examined in terms of size at onset of maturity (SOM) and fecundity, culminating in an examination of how adult size may relate to larval competency. The SOM was much smaller in captive animals (62.5 mm carapace length, CL) compared to historical fishery data and indicated that precocious maturation may be induced in captivity. During this study, the fecundity was assessed as the number of viable phyllosoma at hatch, which was ~ 45% of egg estimates from the historical fishery data, suggesting either declining egg numbers in wild stocks over time or that major egg loss occurs during embryonic development. The association between SOM and sexual dimorphism was examined for several morphometric parameters. In females, the SOM was concomitant with increases to the width of the 1 st and 2 nd abdominal segments above 62.5 mm CL, while 2 nd and 3 rd leg length increased disproportionately in males compared to females above 77.5 mm CL. There were significant correlations between viable fecundity and female size (r = 0.92), phyllosoma size (r = 0.74) and larval viability as quantified by stress indices (r = -0.56) and LD-50 (r = 0.56), indicating that larger females produce larger, more viable larvae. These physiological traits in larval, juvenile and adult animals may have an impact on fishery and aquaculture production.

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Section: Discussionsupporting

confidence: 73%

Sexual maturation in captive spiny lobsters,Jasus edwardsii, and the relationship of fecundity and larval quality with maternal size

Smith¹,

Ritar²

2007

Invertebrate Reproduction & Development

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“…Their radiating germinal cell pattern (also observed from Stages 1 to 6) was first mentioned by Herrick (1886) and described by Bumpus (1891). Similar cell architecture has also been observed for the H. gammarus (Erkan & Ayun, 2014), spiny lobster Jasus lalandii (Fielder, 1964a), king prawn Metanephrops andamanicus (Berry, 1969), N. norvegicus (Farmer, 1974b;Mente et al, 2009;Rotllant, Ribes, Company, & Durfort, 2005), and several crabs (e.g., Carcinus maenas, Laulier & Demeusy, 1974;Portunus pelagicus, Arul Dhas, Subramoniam, Sudha, & Govindarajula, 1980). Beside the change in color from white to olive and the increased diameter of large previtellogenic oocytes, Stage 2 is characterized by the first appearance of vacuoles indicating eminent yolk deposition (Berry, 1969;Tan-Fermin & Pudadera, 1989; this study).…”

Section: Discussionsupporting

confidence: 70%

“…Finally, the lack of muscle fibers within the oviduct wall has also been reported for N. norvegicus (Rotllant et al, ) and some shrimps ( L. setiferus , King, ; P. monodon , Iamsaard, Sriurairatana, & Withyachumnarnkul, ). There are, however, conflicting descriptions for the spiny lobster J. lalandii as Fielder () described three tissue layers with no muscle while Silberbauer () reported striated muscles.…”

Section: Discussionmentioning

confidence: 99%

Functional anatomy of the female reproductive system of the American lobster (Homarus americanus)

Comeau

Benhalima

2018

Journal of Morphology

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Light microscopy studies of the female American lobster Homarus americanus reproductive system are essentially nonexistent or outdated. Based on samples taken in the spring, summer, and autumn from the southern Gulf of St. Lawrence between 1994 and 2014, and using a combination of histological and scanning electron microscope techniques, we propose an ovarian cycle with 10 stages, identifying for the first time a recovery stage. Also, an atypical resorption stage, characterized by massive reabsorption of mature oocytes, is occasionally observed during summer months. The oviducts are composed of connective tissue (elastic and collagen fibers) with no muscle or secretory activities. Their epithelium shows a cyclic pattern and phagocytosis activities linked to spawning. Although the role of the seminal receptacle is to store and protect semen, free spermatozoa (i.e., without the spermatophoric wall and the acellular gelatinous substance that constitute the semen) were also observed in its posteriolateral grooves immediately prior to spawning, which is consistent with an external fertilization mechanism at the seminal receptacle. Unexpectedly, free spermatozoa were observed externally near two pore‐like structures located on the gonopore's operculum, not at the seminal receptacle, after spawning; hence, more work is needed to fully understand the fertilization mechanism for the American lobster.

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“…The testes typically line the anterior digestive tract and may reach as far as the abdomen (MacLaughlin, 1983). The histological studies of the lobster testes have revealed long, highly convoluted tubes, connected medially by a transversal commissure, resembling an 'H' (Mathews, 1951;Fielder, 1964;Mota-Alves and Tomé, 1966;Paterson, 1969). To our knowledge, no histochemical studies of lobster testes have been published so far.…”

Section: Introductionmentioning

confidence: 99%

Morphology of the male gonads of the spiny lobster Panulirus laevicauda (Latreille, 1817)

Lima

Gesteira

2008

Braz. arch. biol. technol.

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The present study represented a contribution to the knowledge of the cytological and histological aspects of decapods' reproductive system, describing male germ cells of the spiny lobster Panulirus laevicauda. Seventy-one specimens of different sizes were caught off Fortaleza (Ceará, Brazil). Their testes were removed and fixed in Bouin solution, then, after 24 hours, dehydrated, cleared and embedded in the paraffin. Sections (4 µm thick) were stained with hematoxylin-eosin. The testes appeared macroscopically as a pair of long and highly convoluted tubes joined by a transversal commissure giving the organ an H-like shape. Microscopically, supporting cells and germ cells (spermatogonia I and II, spermatocytes, spermatids and spermatozoa) were seen in the testicular acini. Some of the acini showed signs of the spermotocytes and the spermatogonia degeneration. The spermatozoa were small cells with the peripheral nuclei and a lightly basophilic cytoplasm. They were nonmotile gametes and are characterized by the absence of a flagellum, but they had spikes radiating from the body. Three stages of follicular development in the mature individuals were observed: (a) predominance of spermatogonia I and II; (b) increasing numbers of spermatocytes I and II; and (c) spermatocytes I and II were prevalent. All the three stages of the spermatozoa were observed in the follicular lumen. These observations agreed with the published descriptions of other palinurid and homarid lobsters. A histochemical analysis of the testes showed that the main component of the tunic was collagenous fibers, that the seminal fluid contained plenty of glycoproteins and carboxyl-glycoconjugates and that the spherical bodies and spermatozoa contained glycoproteins and mucoproteins.
O presente trabalho tem como objetivo ampliar os conhecimentos na área de histologia e citologia do sistema reprodutivo dos Decapoda, descrevendo as células germinativas do macho da lagosta Panulirus laevicauda. Animais com tamanhos variados foram coletados em diferentes épocas do ano no litoral de Fortaleza, Estado do Ceará - Brasil, totalizando 71 machos. Os testículos foram retirados e fixados em bouin e processados. Cortes de 5µm foram corados em hematoxilina - eosina. Seguindo observações macroscópicas, os testículos são longos tubos pares altamente convolutos unidos por uma comissura transversal na porção mediana, apresentando uma forma de H. As análises microscópicas dos folículos testiculares mostraram células sustentaculares e germinativas (espermatogônias I e II, espermatócitos I e II, espermatócitos I em degeneração, espermátides e espermatozóides). Os espermatozóides são células pequenas com núcleo periférico e citoplasma levemente basofílico. Três estágios foliculares para indivíduos maduros foram identificados: tipo a, onde predominam espermatogônias I e II; tipo b com maior incidência de espermatócitos I e II e no tipo c foi observado principalmente espermátides e espermatócitos I em degeneração. Espermatozóides podem ser encontrados no lúmen dos folículos ...

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The spiny lobster, Jasus lalandei (H. Milne-Edwards), in South Australia. II. Reproduction

Cited by 32 publications

References 0 publications

Sexual maturation in captive spiny lobsters,Jasus edwardsii, and the relationship of fecundity and larval quality with maternal size

Sexual maturation in captive spiny lobsters,Jasus edwardsii, and the relationship of fecundity and larval quality with maternal size

Functional anatomy of the female reproductive system of the American lobster (Homarus americanus)

Morphology of the male gonads of the spiny lobster Panulirus laevicauda (Latreille, 1817)

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