• Publications
  • Influence
The effects of mode of development on phylogeography and population structure of North Atlantic Crepidula (Gastropoda: Calyptraeidae)
  • R. Collin
  • Biology, Environmental Science
    Molecular ecology
  • 1 September 2001
TLDR
The coincident occurrence of range endpoints and genetic breaks along the east coast of Florida in both direct‐developing species and species with planktonic development indicates that this biogeographic break is not due to development‐specific mechanisms such as hydrographic effects on larval recruitment.
Photographic Identification Guide to Some Common Marine Invertebrates of Bocas Del Toro, Panamá
Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Balboa, Ancon, Republic of Panama. Museo Marino de Margarita, Boulevard El Paseo, Boca del Rio, Peninsula de Macanao, Nueva
Worldwide patterns in mode of development in calyptraeid gastropods
  • R. Collin
  • Environmental Science
  • 4 February 2003
TLDR
A compiled data set of developmental characters for 78 species of calyptraeid gastropods shows strong latitudinal effects in mode of development, the frequency of planktotrophic species decreases with increasing latitude while the proportion of direct developers increases, and a striking latitudinal pattern in the occurrence of nurse eggs.
Reversing opinions on Dollo's Law.
Sex, Size, and Position: A Test of Models Predicting Size at Sex Change in the Protandrous Gastropod Crepidula fornicata
  • R. Collin
  • Environmental Science, Psychology
    The American Naturalist
  • 1 December 1995
TLDR
Three models that predict the size at sex change using estimates of immediate reproductive potential based on individual size and interactions with conspecifics showed that an individual's sex could be predicted as well by its size alone as by the combination of each group member's size.
Phylogeny of the Crepidula plana (Gastropoda: Calyptraeidae) cryptic species complex in North America
TLDR
Molecular techniques are used to characterize populations of flat white-shelled Crepidula species from Texas, Florida, Georgia, North Carolina, and |Massachusetts, and describe their morphology and development, and DNA-sequence data support the existence of three species.
PHYLOGENETIC EFFECTS, THE LOSS OF COMPLEX CHARACTERS, AND THE EVOLUTION OF DEVELOPMENT IN CALYPTRAEID GASTROPODS
  • R. Collin
  • Biology, Environmental Science
    Evolution; international journal of organic…
  • 1 July 2004
TLDR
Analytical results suggest that mode of development evolves rapidly and with little phylogenetic inertia, and species with direct development from large yolky eggs appear to be subject to phylogenetic constraints and may not be able to subsequently evolve a different modes of development.
Tropical dead zones and mass mortalities on coral reefs
TLDR
An unprecedented hypoxic event on the Caribbean coast of Panama is document and the risk of dead zones to coral reefs worldwide is assessed, showing that therisk of dead-zone events to reefs worldwide likely has been seriously underestimated.
The Slipper Snail, Crepidula: An Emerging Lophotrochozoan Model System
TLDR
A review of the current state of knowledge of Crepidula life histories and development together with some detailed experimental methods are brought together to encourage further use of this system in various fields of investigation.
Phylogenetic relationships among calyptraeid gastropods and their implications for the biogeography of marine speciation.
  • R. Collin
  • Environmental Science, Biology
    Systematic biology
  • 1 October 2003
TLDR
A phylogenetic analysis of calyptraeid gastropods using DNA sequence data from mitochondrial cytochrome oxidase I and 16S genes and the nuclear 28S gene was used to examine the biogeographic patterns of speciation in the CalyPTraeidae.
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