Reproductive biology of Cosmasterias lurida (Echinodermata: Asteroidea) an anthropogenically influenced substratum from Golfo Nuevo, Northern Patagonia (Argentina)

Pastor-de-Ward, C.T.; Rubilar, Tamara; Díaz-de-Vivar, María E.; González-Pisani, Ximena; Zarate, Erica; Kroeck, Marina Andrea; Morsán, Enrique

doi:10.1007/s00227-006-0479-x

Cited by 26 publications

(15 citation statements)

References 39 publications

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“…Farmanfarmaian et al (1958) described the reproductive cycles of four species of asteroids from the coast of California using the gonad and pyloric caecal indices, which showed an inverse relationship indicating the translocation of nutrients from pyloric caeca to the gonads. A number of studies have been carried out with asteroids in different parts of the world (see Chia & Walker, 1991;Georgiades et al, 2006 for most of them; also Benítez-Villalobos et al, 2007;Pastor de Ward et al, 2007;Benítez-Villalobos & Diaz Martinez, 2009), revealing different patterns in gonad and pyloric caecum development, but most of them resembling the results obtained by Farmanfarmaian et al (1958).…”

Section: Introductionmentioning

confidence: 83%

Reproductive biology of the starfishPharia pyramidatus(Echinodermata: Asteroidea) from the Mexican tropical Pacific

Benítez‐Villalobos

Martínez-García

2012

J. Mar. Biol. Ass.

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The starfishPharia pyramidatusis a tropical species of high ecological importance, mainly because of its role as generalist predator. Nevertheless, there are no studies about its reproduction. This study analysed the reproductive biology ofP. pyramidatusbased on monthly time-series samples from April 2008 to March 2009 at Isla Montosa in the Mexican tropical Pacific. The gonad index (GI), and pyloric caecum index (PCI) were determined and the results were corroborated by histological examination of the gonads.Pharia pyramidatusis a gonochoric asteroid and the ratio of males to females was not significantly different throughout the year. Gametogenesis showed high synchrony among males and females and five stages were recognized for both sexes. Spawning occurred from July to September. Maximum oocyte size was ~150μm and mean fecundity was 7.3 ± 1.2 millions of oocytes per female. GI and PCI showed seasonal variations and an inverse relationship from May to August. Sea-bottom temperature and photoperiod showed a direct relationship with GI, and apparently constitute the proximate causes of the seasonal reproductive pattern observed inP. pyramidatus, while the highly seasonal rainfall and strong upwelling probably act as ultimate causes.

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Section: Introductionmentioning

confidence: 83%

Reproductive biology of the starfishPharia pyramidatus(Echinodermata: Asteroidea) from the Mexican tropical Pacific

Benítez‐Villalobos

Martínez-García

2012

J. Mar. Biol. Ass.

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“…Many other shallow water invertebrates from the study area have a defined seasonal reproductive cycle; e.g. echinoids (Marzinelli et al 2006, Brogger et al 2010, asteroids (Rubilar et al 2005, Pastor de Ward et al 2007, and gastropods (Bigatti et al 2008, Averbuj & Penchaszadeh 2010. As the present work was conducted with a population near the southern limit of the species' distribution (Brogger et al 2013), reproduction of tropical water populations from northern Brazil would be expected to be similar to that observed here, as further north there would be even less environmental seasonality.…”

Section: Discussionmentioning

confidence: 51%

Reproduction of Ophioplocus januarii (Echinodermata: Ophiuroidea): a continuous breeder in northern Patagonia, Argentina

Brogger¹,

Martínez²,

Zabala³

et al. 2013

Aquat. Biol.

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We studied the reproduction of Ophioplocus januarii from Playa Villarino (42°24' S, 64°17' W), based on monthly samples collected between April 2005 and April 2007. Gonad indices were generally synchronous for males and females with little seasonal pattern. The changes of the gonad index were not significantly correlated with day length or water temperature. Histological analyses showed no evidence of seasonal differences in the maturation stages of the gonads, but that ovaries contained oocytes at different stages of development during the year. Thus, variations in the gonad index resulted from differences in the number of gametes in the gonads each month, suggesting that there are some periods when spawning intensity is higher than in others. Oocyte size-frequency analysis revealed only slight accumulation of large oocytes, with the largest oocytes over 400 µm in diameter. This, together with the absence of oocytes being resorbed, suggests that gametes are being released continuously without a defined resting phase for the ovary. O. januarii breeds continuously, differing from the seasonal pattern of many other invertebrates living in shallow waters off the Patagonian coast as well as in other temperate seas, providing helpful information towards a better understanding of reproduction in Ophiuroidea.

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“…Furthermore, the relative oocyte area did not decrease as it does in species with a punctual spawn (Pastor de Ward et al, 2007). In contrast, the relative oocyte area remained relatively constant during the extended spawning period.…”

Section: Accepted M Manuscriptmentioning

confidence: 69%

“…If gametogenesis is supported by reserves from the pyloric caeca, a nutrients input to gonads have to occur and a decrease in pyloric caeca weight would be evident (Giese, 1966;Lawrence, 1973;Lawrence and Miller, 1999;Mercier and Hamel, 2009). If food is abundant throughout the year or enough to maintain gametogenesis, the gonads may not depend on the long-term nutrient storage of the pyloric caeca and this inverse relationship between GW and PCW may not be evident (Franz, 1986;Harrold and Pearse, 1980;Pastor de Ward et al, 2007;Xu and Barker, 1990b).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, these were the only two variables included in GLM analyses as explanatory factors of GW variation. Although, we have used an indirect approach to infer links between reproductive cycle and environmental variables, day-length and seawater temperature are considered the most probable factors to trigger reproduction in asteroids, at least for shallow-water species (Grange et al, 2007;Mercier and Hamel, 2009;Pastor-de-Ward et al, 2007; A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT and Bosch, 2002;Pearse and Eernisse, 1982;Pearse and Walker, 1986;Xu and Barker, 1990a).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

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Geographical implications of seasonal reproduction in the bat star Asterina stellifera

Meretta

Rubilar

Cledón

et al. 2014

Journal of Sea Research

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The reproductive cycle and environmental cues that regulate gonad production in Asterina stellifera were studied from April 2009 to April 2011 in a rocky subtidal habitat at the southernmost limit of its distribution (Mar del Plata, Argentina). The geographic variation in reproductive traits between latitudinal range limits was analyzed. The gonadal and pyloric caeca weight varied with sea star size and time in both sexes. Despite a previous study suggested absence of recruitment in a 4 years period, our data of the same period demonstrated that spawning happens from early spring to early summer. The gonad and pyloric caeca weight did not show an inverse relationship, this suggested that there is no dependence on energy transfer between the organs and that the bat star presented a good nutritional state. Seawater temperature appears to be the variable explaining gonad proliferation at the range limits of A. stellifera distribution. Furthermore, differences in sex ratio, oocyte production, oogenesis duration and capability of energy transformation into ova were found between range limits.

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Reproductive biology of Cosmasterias lurida (Echinodermata: Asteroidea) an anthropogenically influenced substratum from Golfo Nuevo, Northern Patagonia (Argentina)

Cited by 26 publications

References 39 publications

Reproductive biology of the starfishPharia pyramidatus(Echinodermata: Asteroidea) from the Mexican tropical Pacific

Reproductive biology of the starfishPharia pyramidatus(Echinodermata: Asteroidea) from the Mexican tropical Pacific

Reproduction of Ophioplocus januarii (Echinodermata: Ophiuroidea): a continuous breeder in northern Patagonia, Argentina

Geographical implications of seasonal reproduction in the bat star Asterina stellifera

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