Introduction: General Principles

Giese, Arthur C.; Pearse, John S.

doi:10.1016/b978-0-12-282501-9.50006-5

Cited by 133 publications

(69 citation statements)

References 123 publications

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“…Environmental parameters such as temperature and salinity are very important factors affecting the regulation of the gonadal cycle in many species of marine invertebrates, as these 2 exogenous parameters directly affect and control reproductive activities (Orton, 1920;Giese, 1959;Kinne, 1970;Giese and Pearse, 1974). The coast of Pakistan lies slightly outside the tropics and does not experience much rainfall, and thus there is no major change in coastal salinity throughout the year.…”

Section: Discussionmentioning

confidence: 99%

Temporal variation in the reproductive pattern of blood cockle Anadara antiquata from Pakistan (northern Arabian Sea)

JAHANGIR¹,

Siddiqui²,

Ayub³

2014

Turk J Zool

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Section: Discussionmentioning

confidence: 99%

Temporal variation in the reproductive pattern of blood cockle Anadara antiquata from Pakistan (northern Arabian Sea)

JAHANGIR¹,

Siddiqui²,

Ayub³

2014

Turk J Zool

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“…However, several authors (e.g. Sastry 1968;Giese 1974;Sastry 1979) have mentioned that the reproductive cycle of suspension feeders is not only influenced by physical parameters such as SST, but also by changes in phytoplankton biomass and species compositions. The increase of chlorophyll a concentrations in the Buenos Aires shelf region observed during winter and summer by Carreto et al (1995) with a main peak in spring and a secondary peak in autumn, correspond considerably with the dominance of M. mactroides in ripe and spawning stages (Fig.…”

Section: Reproduction Cyclementioning

confidence: 99%

Reproductive cycle and gonad development of the Northern Argentinean Mesodesma mactroides (Bivalvia: Mesodesmatidae)

et al. 2009

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The reproductive cycle and gonad development of the yellow clam Mesodesma mactroides was studied over a period of 24 months (January 2005-December 2006 at the Argentinean sandy beach Santa Teresita. Histological examination of gonadal tissue revealed that sex ratios did not significantly deviate from the proportion of 1:1 and no case of hermaphroditism was found. The reproductive cycle of M. mactroides followed an annual cyclicality, which was significantly correlated to monthly mean sea surface temperatures (SST). Oocytes showed highest abundance in winter, indicating a process of gonadal development and sexual maturation. The mean oocyte size decreased significantly during spring. Modal oocyte sizes decreased significantly during winter and late spring of each year, suggesting spawning events. The condition index was not useful in describing the annual reproductive cycle of M. mactroides. Ash-free, shell-free dry mass was chosen to detect the condition of the specimens, and this significantly correlated with monthly mean SST and the gametogenic cycle. Annual recruitment patterns during summer-autumn indicated a 3-month-long planktonic phase of M. mactroides. The reproduction cycle and gonad development of M. mactroides showed only weak differences between data from the present study and those collected 40 years ago.

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“…In this perspective, variation in the biochemical composition of the whole body as well as in individual organ systems during different stages of gonad development and maturation are taken into consideration in determining annual reproductive cycles (Giese & Pearse 1974). The basic metabolic levels of various biochemical components in prosobranch molluscs are very high lipid levels and low polysaccharide levels in the gonad and high polysaccharide and low lipid levels in muscular tissue, particularly in the foot.…”

Section: Introductionmentioning

confidence: 99%

Variation in biochemical composition during gonad maturation of the tropical abaloneHaliotis variaLinnaeus 1758 (Vetigastropoda: Haliotidae)

Najmudeen

2007

Marine Biology Research

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Biochemical changes in the body components during gonad maturation of the tropical abalone Haliotis varia were investigated using wild collected specimens from the Gulf of Mannar, on the southeast coast of India. The gonadosomatic index (GSI) and the hepatosomatic index (HSI) showed negative correlations throughout the study period as well as during the progression of gonad maturation stages. The highest GSI for both the sexes were in the ripe stages followed by late maturing stages. The HSI ranged from 2.97 to 6.71 in females, and 3.55 to 5.09 in males. Among the biochemical components analysed, lipid and carbohydrate contents showed significant variations in the different tissues of H. varia during the progress of gonad maturation. The highest protein content was in the foot muscle and the lowest was in the digestive gland. Total lipids in the ovary were always higher compared with that of the testis and the values ranged from 12.60 to 26.49%, registering the highest value in the ripe ovary. Gonad carbohydrate content was lower when the lipid content was higher, suggesting the conversion of carbohydrate to lipids. The present study demonstrates the role of nutrient translocation between body parts as an essential part of the reproductive physiology of abalone.

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Introduction: General Principles

Cited by 133 publications

References 123 publications

Temporal variation in the reproductive pattern of blood cockle Anadara antiquata from Pakistan (northern Arabian Sea)

Temporal variation in the reproductive pattern of blood cockle Anadara antiquata from Pakistan (northern Arabian Sea)

Reproductive cycle and gonad development of the Northern Argentinean Mesodesma mactroides (Bivalvia: Mesodesmatidae)

Variation in biochemical composition during gonad maturation of the tropical abaloneHaliotis variaLinnaeus 1758 (Vetigastropoda: Haliotidae)

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