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The banded coral shrimp, Stenopus hispidus (Crustacea: Decapoda: Stenopodidea) is a popular marine ornamental species with a circumtropical distribution. The planktonic larval stage lasts ∼120–253 days, indicating considerable dispersal potential, but few studies have investigated genetic connectivity on a global scale in marine invertebrates. To resolve patterns of divergence and phylogeography of S. hispidus , we surveyed 525 bp of mitochondrial cytochrome c oxidase subunit I (COI) from 198 individuals sampled at 10 locations across ∼27,000 km of the species range. Phylogenetic analyses reveal that S. hispidus has a Western Atlantic lineage and a widely distributed Indo-Pacific lineage, separated by sequence divergence of 2.1%. Genetic diversity is much higher in the Western Atlantic ( h = 0.929; π = 0.004) relative to the Indo-Pacific ( h = 0.105; π < 0.001), and coalescent analyses indicate that the Indo-Pacific population expanded more recently (95% HPD (highest posterior density) = 60,000–400,000 yr) than the Western Atlantic population (95% HPD = 300,000–760,000 yr). Divergence of the Western Atlantic and Pacific lineages is estimated at 710,000–1.8 million years ago, which does not readily align with commonly implicated colonization events between the ocean basins. The estimated age of populations contradicts the prevailing dispersal route for tropical marine biodiversity (Indo-Pacific to Atlantic) with the oldest and most diverse population in the Atlantic, and a recent population expansion with a single common haplotype shared throughout the vast Indian and Pacific oceans. In contrast to the circumtropical fishes, this diminutive reef shrimp challenges our understanding of conventional dispersal capabilities of marine species.
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Ho‘okele ka Wa‘a: Recalibrating the Sail Plan for Native Hawaiians and Pacific Islanders in the Ocean Sciences
In Hawai‘i and across much of Oceania, Pacific Islanders celebrate the connections between our islands and the ocean that surrounds us. Since the beginning of time, we have relied upon precise observations of marine and celestial realms to intentionally navigate thousands of miles across vast expanses of open ocean. Through our migrations, we have created—and continue to create—purposeful relationships by observing the movements of swells, weather patterns, celestial bodies, and marine life. In direct opposition to colonial Western thought, we view Oceania as a metaphorical road that connects rather than separates island people (Hau’ofa, 1994). As descendants of the ocean, the dearth of Native Hawaiians and Pacific Islanders (NHPIs) in ocean science seems inconsonant. We wonder, where are all our island people in the ocean sciences? In better defining the persistent, systemic, and collective barriers that NHPIs face within Western society and the academy, we identify gaps that conventional professional development programs aimed at minoritized groups in the geosciences have been unsuccessful in filling. We share lessons learned from building two wa‘a (canoes) in programs that center oceanic ways of knowing.
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- Award ID(s):
- 2022937
- PAR ID:
- 10520071
- Publisher / Repository:
- The Oceanography Society
- Date Published:
- Journal Name:
- Oceanography
- Volume:
- 36
- Issue:
- 4
- ISSN:
- 1042-8275
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Journal Article:
- https://doi.org/10.5670/oceanog.2024.137
