Direct development in the intertidal South American shell-less <i>Onchidella marginata</i> (Couthouy in Gould, 1852) (Gastropoda: Heterobranchia: Onchidiidae)

Dalton, María Cecilia; Penchaszadeh, Pablo E.

doi:10.1080/13235818.2019.1644712

Cited by 2 publications

(2 citation statements)

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“…Slugs and other animals were then isolated in mangroves on either side of this shelf for thousands of years. Given the short generation time of slugs and snails, with temperate Onchidella species laying egg capsules once or twice per year and quickly reaching adulthood, this is equivalent to thousands of generations of separation 45 , 49 . As sea levels rose, mangroves colonized the Strait of Malacca as it formed, bringing species from the Bay of Bengal and the South China Sea into contact.…”

Section: Discussionmentioning

confidence: 99%

“…are characterized by an intestine of different length, which is likely associated with the amount of time needed to extract nutrients from food mixed with different substrates 46 . Onchidiid species may also vary in developmental mode, with some species hatching from egg capsules and others developing through planktonic larvae, but this is known only in a few species, and it has been unclear how the biogeographic patterns in these intertidal slugs compare to other marine invertebrates 47 – 49 . The slugs of the family Onchidiidae are an ideal case study to investigate patterns of species diversity and distribution outside coral reefs in the Indo-West Pacific because this family has diversified in mangroves and rocky shores, and its systematics has recently been completely revised taxonomically and phylogenetically 46 , 50 – 62 .…”

Section: Introductionmentioning

confidence: 99%

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The Coral Triangle and Strait of Malacca are two distinct hotspots of mangrove biodiversity

Goulding,

Dayrat

2023

Sci Rep

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Knowledge of the biogeography of marine taxa has lagged significantly behind terrestrial ecosystems. A hotspot of marine biodiversity associated with coral reefs is known in the Coral Triangle of the Indo-West Pacific, but until now there was little data with which to evaluate broad patterns of species richness in the coastal fauna of ecosystems other than coral reefs. This data is critically needed for fauna with low functional redundancy like that of mangroves, that are vulnerable to habitat loss and rising sea levels. Here we show that the diversity of mangrove fauna is characterized by two distinct hotspots in the Indo-West Pacific, associated with two habitat types: fringe mangroves in the Coral Triangle, and riverine mangroves in the Strait of Malacca, between the west coast of Peninsular Malaysia and Sumatra. This finding, based on a family of slugs of which the systematics has been completely revised, illustrates an unexpected biogeographic pattern that emerged only after this taxon was studied intensively. Most organisms that live in the mangrove forests of Southeast Asia remain poorly known both taxonomically and ecologically, and the hotspot of diversity of onchidiid slugs in the riverine mangroves of the Strait of Malacca indicates that further biodiversity studies are needed to support effective conservation of mangrove biodiversity.

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Section: Discussionmentioning

confidence: 99%