External factors determining breeding season in the red mangrove crab Goniopsis cruentata (Latreille) (Crustacea, Brachyura, Grapsidae) on the São Paulo State northern coast, Brazil

Cobo, Valter José; Fransozo, Adílson

doi:10.1590/s0101-81752003000200007

Cited by 34 publications

(28 citation statements)

References 21 publications

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“…Este fator ambiental torna-se de grande importância, limitando a dispersão das zoeas em nível horizontal, além de promover uma redução deste período crítico, quando o animal é mais suscetível à predação (PINHEIRO et al, 1994). Além disso, a temperatura influencia a duração do período reprodutivo de algumas espécies de Brachyura exploradas comercialmente, como G. cruentata e U. cordatus (BOTELHO et al, 1999;COBO & FRANSOZO, 2003).…”

Section: Discussionunclassified

Dinâmica espacial e temporal de zoeas de Brachyura (Crustacea, Decapoda) no estuário do Rio Jaguaribe, Itamaracá, Pernambuco, Brasil

Silva-Falcão

Severi

Rocha

2007

Iheringia, Sér. Zool.

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ABSTRACT. Spatial and temporal dynamics of Brachyura zoeae (Crustacea, Decapoda) in the Jaguaribe river estuary, Itamaracá, Pernambuco, Brazil. A survey regarding the diel and seasonal distribution of brachyuran zoea was accomplished in the Jaguaribe estuary, state of Pernambuco, Brazil. Plankton samples were obtained bimonthly, throughout the year of 2001, in different tides and during day and night periods, at two sampling stations. Fourteen taxa were identified, among which Ocypodidae, represented by Ucides cordatus (Linnaeus, 1763) and Uca spp. zoea, was the most abundant one, followed by Xanthidae and Grapsidae. In the station close to the estuary opening, the taxa were well distributed, besides presenting a larger number of identified families. Ocypodidae, Grapsidae and Morphotype B zoea indicated a dispersion movement into coastal areas, while Pinnotheridae indicated a probable retention within the estuarine waters. The high occurrence of zoea in the first larval stages reinforces the important role of estuaries as nursery grounds for several crustacean species.

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Section: Discussionunclassified

Dinâmica espacial e temporal de zoeas de Brachyura (Crustacea, Decapoda) no estuário do Rio Jaguaribe, Itamaracá, Pernambuco, Brasil

Silva-Falcão

Severi

Rocha

2007

Iheringia, Sér. Zool.

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“…The first hypothesis is more reasonable, given that slow embryonic development is normally associated to low salinity (LIMA et al 2006), a fact that differs from the conditions of Itaipu Lagoon. In relation to the molt cycle, COSTA & NEGREIROS-FRANSOZO (1998) Callinectes danae Smith, 1869, COBO & FRANSOZO (2003 Goniopsis cruentata Latreille, 1803 and CASTIGLIONI & NEGREIROS-FRANSOZO (2006b) U. rapax, found that the highest molt activity occur in juvenile crabs and that the molt activity decreases after the puberty molt. This is probably related to the investment in the reproductive process, since the beginning of the reproductive activities lead to a decrease in the growth rate, especially the females that stop the growth when bearing eggs and, consequently, stop the molt activities (CRANE 1975).…”

Section: Discussionmentioning

confidence: 99%

“…Monthly fecundity was estimated by counting eggs by the volumetric method, using a total volume of 30 ml and subsamples of 1 ml (DÍAZ et al 1983, COBO & FRANSOZO 2003. Oneway ANOVA was employed, before testing the normality and variance homogeneity assumptions, to compare fecundity across seasons.…”

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confidence: 99%

Population structure and reproductive biology of Uca rapax (Decapoda: Ocypodidae) in a tropical coastal lagoon, southeast Brazil

Costa

Soares-Gomes

2009

Zoologia (Curitiba, Impr.)

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A population of the fiddler crab Uca rapax (Smith, 1870) found in Itaipu Lagoon, southeast Brazil, was sampled monthly from July 2006 to June 2007 in order to study population and reproductive features. The sex ratio of the population was statistically different from the expected (1:1) in almost every month, with a predominance of males. The reproductive cycle and the recruitment of juveniles were continuous, with two peaks. The fecundity ranged from 1.110 to 13.189 eggs (4.984 ± 2.493.8), not differing statistically among seasons. In contrast, the relative fecundity (F') and the reproductive intensity index (RII) were highest in the summer. Female size at the onset of sexual maturity was estimated as 6.1 mm and egg diameter ranged from 0.20 to 0.28 mm. The anthropogenic impact on the environment of Itaipu Lagoon probably had adverse effects on the local U. rapax population, as inferred by its low fecundity rates, early maturation age and biased sex ratio

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“…En algunas especies de cangrejos la actividad reproductiva es continua durante todo el año (FEDOSEYEB, 1988); tal es el caso de Goniopsis cruentata (Latreille, 1803) en Brasil (COBO & FRANSOZO, 2003). En otras, como Ucides cordatus (Linnaeus, 1763) la reproducción se desarrolla en períodos anuales que pueden variar en duración (DALABONA & LOYOLA & SILVA, 2005).…”

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[No Title Available]

Cuartas

Petriella

2010

Iheringia, Sér. Zool.

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ABSTRACT. Structure of the male reproductive tract of Uca uruguayensis (Decapoda, Ocypodidae). The structure of the male reproductive tract was described in Uca uruguayensis Nobili, 1901, by using histological methods, scanning electron microscopy techniques, and stereoscopic observations of fresh material. The aim of this work was to establish the functional changes associated with sexual maturation. The morphology of the first (G1) and second (G2) pair of gonopods was described. The male reproductive tract consists of paired organs: testes, and tubular and convoluted vas deferens (VD) ending with a terminal ampoule (TA).The (VD) is composed of three parts: anterior (AVD), medial (MVD) and posterior (PVD). The AVD and MVD are lined by a single layer of cubical cells. The PVD epithelial cells are columnar with elongated nuclei. The terminal ampoule comprises four interconnecting chambers and is externally surrounded by connective tissue. The study of testes and vas deferens at different times along the year suggests that U. uruguayensis has a single and continuous reproductive season from December to March. The TA has not been described in other brachyurans and this structure is novel to Brachyura. KEYWORDS.Male reproductive tract, functional morphology, Crustacea, Brachyura.RESUMEN. El objetivo de este trabajo es describir las estructuras del sistema reproductor de machos de Uca uruguayensis Nobili, 1901 y estudiar los cambios relacionados con la madurez sexual. Se trabajó con observación estereoscópica de material fresco, técnica histológica de rutina y observaciones en Microscopio Electrónico de Barrido. Se incluyó la caracterización de los gonopodos 1 (G1) y 2 (G2). El tracto reproductor del macho se compone de un par de testículos (T), un vaso deferente (VD) tubular y sinuoso y una ampolla terminal (AT). El VD tiene tres secciones, la anterior (VDA), la media (VDM) y la posterior (VDP). El VDA y VDM están conformadas por un epitelio simple de células cúbicas. El epitelio del VDP es columnar y con núcleos basales y alongados. El diseño tubular se modifica al ocuparse el lumen del VDP con líquido espermático durante el verano y la musculatura circular se hace más evidente. La porción terminal del VDP se ensancha formando una ampolla (AT) que comprende cuatro cámaras interconectadas. Todas las estructuras están rodeadas de una capa de tejido conectivo de poco espesor. Se identifican las modificaciones observadas en la histología de T y VD, definiendo como mas relevantes las observadas desde el mes de noviembre hasta marzo. Estas modificaciones sugieren que U. uruguayensis tiene, en la localidad estudiada, una única estación reproductiva durante el verano en esta latitud. La AT, tal como es descripta, es una estructura que hasta el momento no ha sido mencionada para los Brachyura. PALABRAS CLAVE.Tracto reproductor masculino, morfología funcional, Crustacea, Brachyura.

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External factors determining breeding season in the red mangrove crab Goniopsis cruentata (Latreille) (Crustacea, Brachyura, Grapsidae) on the São Paulo State northern coast, Brazil

Cited by 34 publications

References 21 publications

Dinâmica espacial e temporal de zoeas de Brachyura (Crustacea, Decapoda) no estuário do Rio Jaguaribe, Itamaracá, Pernambuco, Brasil

Dinâmica espacial e temporal de zoeas de Brachyura (Crustacea, Decapoda) no estuário do Rio Jaguaribe, Itamaracá, Pernambuco, Brasil

Population structure and reproductive biology of Uca rapax (Decapoda: Ocypodidae) in a tropical coastal lagoon, southeast Brazil

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