Johannesia reticulosa

• Main Authors: Cóndor-Luján, Báslavi, Arteaga, Alvaro, Polo, Christian, Arroyo, Yessenia, Willenz, Philippe, Hajdu, Eduardo
• Format: Other/Unknown Material
• Language: unknown
• Published: 2023
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Demospongiae; Suberitida; Halichondriidae; Johannesia; Johannesia reticulosa; San Juan; Polo; Hooker; Martin Island; Cóndor
• Online Access: https://zenodo.org/record/7843089; https://doi.org/10.5281/zenodo.7843089

Johannesia reticulosa (Thiele, 1905) (Figure 6, Table 6) Synonyms: Vosmaeria reticulosa Thiele (1905): 423, Fig. 45a–c; Erpenbeck & van Soest (2002): 815. Johannesia reticulosa: Gerasimova et al. (2008): 19, Fig. 10 –12; Polo et al. (2022): 330–331, Fig. 3 Material examined. Nine specimens. MNRJ 11493 and MNRJ 11496, Don Martin Island, Huacho, Lima (1101′11.14″S 7740′08.78″W), 11 and 1.8 m depth, respectively, coll. B. Cóndor Luján, Y. Hooker & Ph. Willenz, 23.X.2007. MNRJ 12073, ENAPU Pier, Ilo, Moquega (1738′43.00″S 7129′04.60″W), 18.3 m depth, coll. Y. Hooker, Ph. Willenz & M. Ríos. 08.XI.2008. MNRJ 12161 and MNRJ 12171, Inlet north of Quilca, Quilca, Arequipa (1642′06.10″S 7226′54.00″W), 9.2 and 4.4 m depth, coll. Y. Hooker, M. Vilchez & Ph. Willenz. 30.XI.2008 and 01.XII.2008. MNRJ 12198, El Avion Islet, San Juan de Marcona, Ica (1523′26.20″S 7510′45. 20″W), 18.9 m depth, coll. Y. Hooker, M. Vilchez & Ph. Willenz, 05.XII.2008. MNRJ 12845, MNRJ 12846 and MNRJ 12852, Bocana, Laguna Grande, Paracas, Ica (1409′31.10″S 7614′55.90″W), 5.6, 5.7 and 4.8 m depth, coll. Y. Hooker & Ph. Willenz, 12.XII.2008. Description. Encrusting, massively spreading, lobate, ridged, lamellate or slightly tubiform. Dimensions can exceed 5 cm in thickness and 50 cm in largest diameter. Oscula circular (diam = 1–2 mm), flat, or more often apical with short membranes. Differentiable and detachable ectosome. Surface slightly reticulated, as observed in some underwater images. Compressible consistency. Colour. Light yellow to orange, greenish and/or with brownish spots in life and beige in ethanol (Fig. 6A, B). Skeleton. Ectosomal, a dense, criss-crossed layer of subtylostyles forming loose brushes, slightly piercing the surface. Few oxeas were also observed in the ectosome, mostly laying tangentially (Fig. 6C). Choanosomal, much less dense, composed of paucispicular to multispicular tracts of oxeas, irregular, loosely reticulated, overlaid by subtylostyles disposed in confusion. Large subectosomal lacunae were ...