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Figure 30. Reproductive systems. A in Reading between the lines: revealing cryptic species diversity and colour patterns in Hypselodoris nudibranchs (Mollusca: Heterobranchia: Chromodorididae)

Figure 30. Reproductive systems. A, Hypselodoris variobranchia Gosliner & Johnson sp. nov., holotype, NMP 041285, scale bar: 1.5 mm. B, Hypseldoris violacea Gosliner & Johnson sp. nov., holotype, NMP 041286, scale bar: 2.0 mm. am, ampulla; bc, bursa copulatrix; ej, ejaculatory portion of the vas deferens; fgm, female gland mass; p, penis; pr, prostatic portion of vas deferens; rs, receptaculum seminis; ud, uterine duct; v, vagina; vg, vestibular gland.

Figure 4. Reproductive systems A in Reading between the lines: revealing cryptic species diversity and colour patterns in Hypselodoris nudibranchs (Mollusca: Heterobranchia: Chromodorididae)

Figure 4. Reproductive systems A, Hypselodoris alburtuqali Gosliner & Johnson sp. nov., holotype, CASIZ19229, scale bar: 0.5 mm. B, Hypselodoris maculosa (Pease, 1871), CASIZ 139595, scale bar: 0.75 mm. C, Hypselodoris brycei Gosliner & Johnson sp. nov., paratype, WAM S12628, scale bar: 3.0 mm. D, Hypselodoris apolegma (Yonow, 2001), CASIZ 083743, scale bar: 2.0 mm. E, Hypselodoris cerisae Gosliner & Johnson sp. nov., holotype CASIZ 178350, scale bar: 0.85 mm. F, Hypselodoris krakatoa Gosliner & Johnson, 1999, CASIZ 206801, Philippines, scale bar: 1.0 mm. G, Hypselodoris confetti Gosliner & Johnson sp. nov., holotype, CASIZ 191070, scale bar: 0.60 mm. H, Hypselodoris decorata (Risbec, 1928), CASIZ 184316, scale bar: 0.60 mm. am, ampulla; bc, bursa copulatrix; ej, ejaculatory portion of the vas deferens; fgm, female gland mass; p, penis; pr, prostatic portion of vas deferens; rs, receptaculum seminis; ud, uterine duct; v, vagina; vg, vestibular gland.

Figure 13. Reproductive systems. A in Reading between the lines: revealing cryptic species diversity and colour patterns in Hypselodoris nudibranchs (Mollusca: Heterobranchia: Chromodorididae)

Figure 13. Reproductive systems. A, Hypselodoris ghardaqana (Gohar & Aboul-Ela, 1957), CASIZ 192282, scale bar: 3.5 mm. B, Hypselodoris iba Gosliner & Johnson sp. nov., CASIZ 177777, scale bar: 3.0 mm. C, Hypselodoris katherinae Gosliner & Johnson sp. nov., CASIZ 181257, scale bar: 1.0 mm. D, Hypselodoris lacuna Gosliner & Johnson sp. nov.,

Figure 4. Reproductive systems A in Reading between the lines: revealing cryptic species diversity and colour patterns in Hypselodoris nudibranchs (Mollusca: Heterobranchia: Chromodorididae)

opennotspecifiedOct 2021View details →

Fig. 3 Reproductive system. A in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 3 Reproductive system. A, Bathydoris antoni sp. nov., general view. B, Bathydoris antoni sp. nov., male part and female gland mass partly removed. C, Dendronotus patricki, MIMB 42240. D, Dendronotus kurilensis sp. nov., paratype MIMB 42238. Abbreviations:

opencc-by-4.0Aug 2024View details →

Reproduction package for the paper "BH-BH mergers with & without EM counterpart: A model for stable tertiary mass transfer in hierarchical triple systems"

This is a reproduction package for the paper "BH-BH mergers with & without EM counterpart: A model for stable tertiary mass transfer in hierarchical triple systems" by Kummer et al. (2024). It aims to provide the most important data products and reproduce the Figures of the paper.

dryad32/100

Mating systems and predictors of relative reproductive success in a Cutthroat Trout subspecies of conservation concern

Mating systems and patterns of reproductive success in fishes play an important role in ecology and evolution. While information on the reproductive ecology of many anadromous salmonids (Oncorhynchus spp.) is well-detailed, there is less information for non-anadromous species including the Yellowstone Cutthroat Trout (O. clarkii bouvieri), a subspecies of recreational angling importance and conservation concern. Using data from a parentage-based tagging study, we described the genetic mating system of a migratory population of Yellowstone Cutthroat Trout, tested for evidence of sexual selection, and identified predictors of mating and reproductive success. The standardized variance in mating success (i.e., opportunity for sexual selection) was significantly greater for males relative to females, and while the relationship between mating success and reproductive success (i.e., Bateman gradient) was significantly positive for both sexes, a greater proportion of reproductive success was explained by mating success for males (r2 = 0.80) than females (r2 = 0.59). Overall, the population displayed a polygynandrous mating system, whereby both sexes experienced variation in mating success due to multiple mating, and sexual selection was variable across sexes. Tests for evidence of sexual selection indicated the interaction between mating success and total length best predicted relative reproductive success. We failed to detect a signal of inbreeding avoidance among breeding adults, but the group of parents that produced progeny were on average slightly less related than adults that did not produce progeny. Lastly, we estimated the effective number of breeders (Nb) and effective population size (Ne) and identified while Nb was lower than Ne, both are sufficiently high to suggest Yellowstone Cutthroat Trout in Burns Creek represent a genetically stable and diverse population.

opencc-zeroJul 2021View details →

Figure 3 in Macro- and microscopic morphology of the reproductive system of Leptinaria unilamellata (d'Orbigny, 1835) (Mollusca: Pulmonata: Subulinidae)

Figure 3. (A) Ovotestis of Leptinaria unilamellata formed by groups of follicular acini; nearby is situated a large network of blood vessels (asterisk). (B) The male germinative lineage (arrow head) is centrally arranged and the female germinative lineage (arrow) is in the outer part of the same follicle. (C) Hermaphrodite duct (hd) with a central nucleus and numerous long cilia. (D) Follicular cells (arrow head) are capable of producing cytoplasmic expansions that enclose the oocytes in vitellogenesis (arrow). Haematoxylin-eosin stained. Scale bar = 50 µm.

Figure 10 in Macro- and microscopic morphology of the reproductive system of Leptinaria unilamellata (d'Orbigny, 1835) (Mollusca: Pulmonata: Subulinidae)

Figure 10. Photomicrographs of the histological section of the prostate of Leptinaria unilamellata, stained according to the Von Kossa method. The circle highlights the presence of calcium granules.

Figure 7 in Macro- and microscopic morphology of the reproductive system of Leptinaria unilamellata (d'Orbigny, 1835) (Mollusca: Pulmonata: Subulinidae)

Figure 7. (A) In the active stage, the prostatic gland has a tubule-alveolar arrangement, with high columnar secretory cells that form prostatic acini (asterisk). (B) During the maturation stage, the cells have a basophilic granular cytoplasm and do not exhibit an acinar arrangement (asterisk). (C) The vas deferens (vd) is a thin filiform tube characterized by a small lumen delimitated by a simple cuboidal epithelium. (D) The vas deferens epithelial cells are supported by a connective tissue layer externally covered by a relatively thick circular muscle layer (arrow). Haematoxylin-eosin stained. Scale bar = 50 µm.

Figure 1 in Macro- and microscopic morphology of the reproductive system of Leptinaria unilamellata (d'Orbigny, 1835) (Mollusca: Pulmonata: Subulinidae)

Figure 1. Reproductive system of Leptinaria unilamellata: (A) penial complex; (B) spermatheca complex; (C) general view of the pallial and ceolomic portions of the reproductive system; (D) muscles associated with the penial complex; (E) longitudinal section of the oviduct showing internal wall ornamentation and the opening of the penial complex. Abbreviations: ag, albumen gland; bc, bursa copulatrix; bcd, bursa copulatrix duct; vd, vas deferens; e, egg; ep, epiphallus; f, flagellum; iw, internal wall of the penis; opc, opening of the penial complex at the genital atrium; ov, free oviduct; p, penis; pm, protractor muscle; pr, prostate gland; rm, retractor muscle; u, uterus.

Figure 6 in Macro- and microscopic morphology of the reproductive system of Leptinaria unilamellata (d'Orbigny, 1835) (Mollusca: Pulmonata: Subulinidae)

Figure 6. (A) The ventral wall of the uterus has a simple ciliated cubic epithelium (ce) and the dorsal wall of the uterus has a simple squamous epithelium (se). (B) The oviduct (asterisk) has a simple epithelium composed of elongated prismatic cells with long cilia. (C) The apocrine secretion (arrow head) produced by the bursa copulatrix can be viewed, whereas a pink or purple stained eosinophilic material can be seen in the organ lumen. (D) The duct of the bursa copulatrix (arrow) is covered by a simple cubic epithelium densely ciliated and non-secretory. Haematoxylin-eosin stained. Scale bar = 50 µm.

Figure 5 in Macro- and microscopic morphology of the reproductive system of Leptinaria unilamellata (d'Orbigny, 1835) (Mollusca: Pulmonata: Subulinidae)

Figure 5. (A, B) Fertilization complex is divided into two portions, first, the fertilization pouch (asterisk), and second, the spermatheca (arrow), which is divided into chambers. (C) Glandular cells of the albumen gland. (D) Labyrinth cells of the albumen gland interposed between the gland cells. Haematoxylin-eosin stained. Scale bar = 50 µm.

Figure 4 in Macro- and microscopic morphology of the reproductive system of Leptinaria unilamellata (d'Orbigny, 1835) (Mollusca: Pulmonata: Subulinidae)

Figure 4. (A) Cells of the male germinative lineage, spermatozoa (asterisk), spermatids (arrow) and primary spermatocytes (spe1). (B) Detail of spermatids (arrow). (C) Detail of secondary spermatocytes (spe2); nearby is an oocyte in vitellogenesis (arrow head). (D) Detail of spermatozoa arranged in groups associated with Sertoli cells. Haematoxylin-eosin stained. Scale bar = 50 µm.

Figure 8 in Macro- and microscopic morphology of the reproductive system of Leptinaria unilamellata (d'Orbigny, 1835) (Mollusca: Pulmonata: Subulinidae)

Figure 8. (A) The penis (p) is a very muscular organ with an internally bounded external longitudinal thick circular muscle. The genital atrium (a) has a wide lumen H-shaped and folded. (B) A cross section shows the vas deferens (arrow head) parallel to the epiphallus (e). (C) The flagellum (fl) is thin, long and glandular; in a cross section of the flagellum, the lumen with its highly folded inner wall can be viewed. (D) Secretory globose cells with abundant granular eosinophilic cytoplasm that constitute the preputial gland (arrow) are found associated with the flagellum wall. Haematoxylin-eosin stained. Scale bar = 50 µm.

Figure 6 in Structure of the reproductive system and hectocotylus in males of lesser flying squid Todaropsis eblanae (Cephalopoda: Ommastrephidae)

Figure 6. The hectocotylus Todaropsis eblanae from (A) the shelf of Namibia [mantle length (ML) 7.6 cm, V1 maturity stage], and (B, C) the Barents Sea (ML 9.2 cm, V1 maturity stage). Scale bars: 5 mm (A, B), 1 mm (C).

Figure 5 in Structure of the reproductive system and hectocotylus in males of lesser flying squid Todaropsis eblanae (Cephalopoda: Ommastrephidae)

Figure 5. Ontogenetic variability of spermatophore length in Todaropsis eblanae (V2 maturity stage) from (A) the shelf of Mauritania [mantle length (ML) 12.1 cm, 113 spermatophores]; and (B) the shelf of Angola (ML 13.5 cm, 79 spermatophores). 1, spermatophores from the anterior part of the spermatophoric sac; 2, from the main part; 3, from the posterior part; 4, all spermatophores.

Figure 4 in Structure of the reproductive system and hectocotylus in males of lesser flying squid Todaropsis eblanae (Cephalopoda: Ommastrephidae)

Figure 4. The spermatophores of Todaropsis eblanae from (A, B) the shelf of Mauritania [mantle length (ML) 12.1 cm, V2 maturity stage]; (C, D) the Mascarene ridge (ML 14.2 cm, V2 maturity stage); and (E–G) the Barents Sea (ML 9.2 cm, V1 maturity stage). B, D, F, anterior part of cement body; G, tentative spermatophore. Scale bars: 1 mm (A, C, E), 0.5 mm (B, D, F, G).

Figure 3 in Structure of the reproductive system and hectocotylus in males of lesser flying squid Todaropsis eblanae (Cephalopoda: Ommastrephidae)

Figure 3. The spermatophoric complex of organs of Todaropsis eblanae from (A) the Barents Sea [mantle length (ML) 9.2 cm, V1 maturity stage]; (B) the shelf of Morocco (ML 11.4 cm, IV maturity stage); (C) the shelf of Namibia (ML 7.6 cm, V1 maturity stage); and (D) the Mascarene ridge (ML 14.2 cm, V2 maturity stage). Parts of SCO: sd, sperm duct; sg I–VI, spermatophoric gland parts; ss, spermatophoric sac; p(to), penis (terminal organ); f, fundus. Scale bars: 5 mm.

Figure 2 in Structure of the reproductive system and hectocotylus in males of lesser flying squid Todaropsis eblanae (Cephalopoda: Ommastrephidae)

Figure 2. Scheme of measuring of (A) hectocotylus and (B) spermatophore. Length of: 1. hectocotylized arm; 2. modified proximal part; 3. hectocotylized distal part; 4. spermatophore; 5. tread; 6. head; 7. ejaculatory tube; 8. cement body; 9. seminal reservoir; 10. posterior empty part. Width of: 11. modified proximal part; 12. coarse crests; 13. ventral membrane of distal part; 14. leaf-like plates; 15. seminal reservoir; 16. spermatophore; 17. diameter of sucker.