Elasmobranchii (sharks and rays) >
Rajiformes (Skates and rays) >
Arhynchobatidae (Softnose skates)
Etymology: Psammobatis: Greek, psammos = sand + Greek, batis, batidos = a ray (Raja sp.) (Ref. 45335).
More on author: Philippi.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 40 - 450 m (Ref. 27092). Subtropical
Southeast Pacific: Chile. Southwest Atlantic: Uruguay to Argentina (Ref. 58839).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 43.0 cm SL male/unsexed; (Ref. 35509)
Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 5.2 cm long and 3.1 cm wide (Ref. 41249).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).
McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Preferred temperature (Ref.
123201): 4.4 - 9.7, mean 6.5 °C (based on 275 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00562 (0.00288 - 0.01097), b=3.11 (2.94 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.8 ±0.7 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (41 of 100).
Nutrients (Ref.
124155): Calcium = 104 [14, 2,653] mg/100g; Iron = 1.3 [0.1, 18.2] mg/100g; Protein = 14.5 [12.8, 16.3] %; Omega3 = 0.786 [0.191, 3.039] g/100g; Selenium = 8.13 [0.98, 53.40] μg/100g; VitaminA = 215 [10, 4,200] μg/100g; Zinc = 1.67 [0.12, 19.86] mg/100g (wet weight); based on
nutrient studies.