2005
DOI: 10.1093/mollus/eyi003
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Reproductive Seasonality And Simultaneous Hermaphroditism In Two Species Of Siphonaria (Gastropoda: Pulmonata) From The Southeast Coast Of South Africa

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Cited by 12 publications
(19 citation statements)
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“…However, support for an increase of spawn in the eelgrass, during the early summer of 2009/2010, came from samples collected in Kingfisher Creek (Table 2). Reproductive seasonality has also been reported (Pal & Hodgson, 2005) for S. capensis and S. aspera, important members of the rocky intertidal invertebrate community of the South Coast Province (Hodgson, 2010).…”
Section: Spawning Frequencymentioning
confidence: 78%
See 1 more Smart Citation
“…However, support for an increase of spawn in the eelgrass, during the early summer of 2009/2010, came from samples collected in Kingfisher Creek (Table 2). Reproductive seasonality has also been reported (Pal & Hodgson, 2005) for S. capensis and S. aspera, important members of the rocky intertidal invertebrate community of the South Coast Province (Hodgson, 2010).…”
Section: Spawning Frequencymentioning
confidence: 78%
“…This pattern of indeterminate growth coupled with early maturation allows insurance against structural and physical changes in the environment. Spawning in summer does, however, have disadvantages (Pal & Hodgson, 2005) not least of which is rapid rise in surface temperature that requires some adaptation. For example, S. aspera attaches spawn to rock, but possesses a structural modification of the mucous matrix of the spawn coat (Pal & Hodgson, 2003) that gives a measure of resistance to desiccation associated with elevated temperatures.…”
Section: Discussionmentioning
confidence: 99%
“…5). For example, potential differences in dynamics and availability of algae between the 2 habitats could have a strong effect on growth rate and survival and could reduce the resources to be allocated to reproductive effort for populations on seawalls (Quinn 1988b, Pal & Hodgson 2004. Additionally, a shortage of food on seawalls may affect intensity and relative importance of competitive interactions among different grazers.…”
Section: Discussionmentioning
confidence: 99%
“…It differs from Williamia radiata (RutHenSteineR et al 2007) in having a much smaller and single penis gland, inserted on the penis tip. For additional details of the siphonariid genital structures see PaL & HodGSon (2002, 2003, 2005 and PaL (2007).…”
Section: Discussionmentioning
confidence: 99%
“…Though most of them are entirely terrestrial, some primitive taxa are marine, and depend on the pelagic environment to complete their development. Within the family Siphonariidae, most taxa have planktotrophic veliger larvae (JabLonSKi & Lutz 1983, GRaHame & bRancH 1985, although some species undergo intra-capsular larval stage -a mode of development sometimes called direct development (PaL & HodGSon 2002), a term that has been used for the siphonariids (cHambeRS & mcQuaid 1994a, b, PaL & HodGSon 2003, 2005. Planktonic larval development is regarded as plesiomorphic within the family, and used as a systematic criterion to resolve their higher taxonomy and evolutionary relationships.…”
Section: Introductionmentioning
confidence: 99%