Nodipecten nodosus

Nodipecten nodosus, or the lion's paw scallop, is a species of bivalve mollusc in the family Pectinidae. It can be found along the Atlantic coast of North America, ranging from Cape Hatteras to the West Indies, including Brazil and Bermuda.[1]

Nodipecten nodosus
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Pectinida
Family: Pectinidae
Genus: Nodipecten
Species:
N. nodosus
Binomial name
Nodipecten nodosus

The lion's paw scallop is a species that consists of large scallop shells with ridges and bumps that have a rough texture. The shell is known for its distinct knobs on the ridges. Ranging from red to orange and also purple, the lion's paw scallop ranges in color. The shell’s common name is derived from its appearance, the color, and the knobs giving it some visual similarities to the paw of a lion.[2]

As the largest scallop of the Western-Atlantic Ocean, the lion's paw has been commercially fished for human consumption for decades. Indeed, the recent decline of abalone fisheries along with an increase in the shell’s value has led to aquaculture specific to the species. Their high growth rate makes them popular; however, not much is known about the requirements to improve farming. Due to their popularity in commercial fishing, the lion's paw scallops native to Brazil face the risk of extinction.[2][3][4]

Lion's paw scallops are known to be hermaphroditic, so they have both male and female gonads. In external fertilization, an organism will release both eggs and sperm.[5]

The lion's paw shell is valuable to collectors because of its size, vibrant colors, and extremely distinctive features.

Distribution

Nodipecten nodosus are found in the tropical waters of the Atlantic Ocean. They are found in deeper waters, ranging from 9 - 49m (30 – 160 ft) deep. Its habitat ranges from the coast of North Carolina to the West Indies and from Brazil to Bermuda.[2] Lion's paw scallops can also be found in the deeper sections of the Gulf of Mexico.

Lion's paw scallops usually occur in low densities and cannot be farmed from a fishery. It is, however, a commonly used species for aquaculture in the Caribbean Colombian due to their quick growth rate.[3]

Museum specimen with successive species labels, Naturalis

Description

The lion's paw can be 6.4 - 15.2 cm (2.5–6 in) long and are nearly circular. It has a moderately thick shell with flattened anterior wings near the hinge. In fact, the shell of the animal is very bright and is known for its thick and knobby texture. Their colors can range from red to orange; however, some appear purple and even yellow in hue.

Ecology

The lion's paw is an epibenthic bivalve that lives in deep, tropical waters of the Atlantic Ocean in rough sediment and rubble. They are also known to attach to the hard substrate they live in. Lion's paws are filter feeders, so they feed off of microalgae in the water column.[5]

Lion's paw scallops spawn twice a year. Along the coast of Brazil, they are known to spawn once in the winter and once again in the summer.[6]

Lion's paws rarely produce pearls, however, when they do, the pearl is composed mainly of calcite and are non-nacreous.[7]

References
  1. Abbott, R.T. & Morris, P.A. A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies. New York: Houghton Mifflin, 1995. 29.
  2. Cowan, R. S.; Little, E. L. (May 1981). "The Audubon Society Field Guide to North American Trees: Eastern Region". Taxon. 30 (2): 548. doi:10.2307/1220177. ISSN 0040-0262. JSTOR 1220177.
  3. Lodeiros, César J; Rengel, José J; Guderley, Helga E; Nusetti, Osmar; Himmelman, John H (July 2001). "Biochemical composition and energy allocation in the tropical scallop Lyropecten (Nodipecten) nodosus during the months leading up to and following the development of gonads". Aquaculture. 199 (1–2): 63–72. doi:10.1016/S0044-8486(01)00505-1.
  4. Americo, Juliana Alves; Dondero, Francesco; Moraes, Milton Ozório; Allodi, Silvana; Rebelo, Mauro de Freitas (October 2013). "Gene discovery in the tropical scallop Nodipecten nodosus: Construction and sequencing of a normalized cDNA library". Marine Environmental Research. 91: 34–40. doi:10.1016/j.marenvres.2013.03.008. PMID 23669241.
  5. Velasco, L.A.; Barros, J.; Acosta, E. (June 2007). "Spawning induction and early development of the Caribbean scallops Argopecten nucleus and Nodipecten nodosus". Aquaculture. 266 (1–4): 153–165. doi:10.1016/j.aquaculture.2007.02.015.
  6. "Native Vieira - Lion's Paw Scallop - Arca del Gusto". Slow Food Foundation. Retrieved 2019-04-08.
  7. Scarratt, Kenneth; Hänni, Henry A. (2004). "Pearls from the lion's paw scallop". The Journal of Gemmology. 29 (4): 193–203. doi:10.15506/JoG.2004.29.4.193.
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